Serve secure metrics at 10258

vendor/github.com/NYTimes/gziphandler/.gitignore

@@ -0,0 +1 @@
+*.swp

vendor/github.com/NYTimes/gziphandler/.travis.yml

@@ -0,0 +1,6 @@
+language: go
+
+go:
+  - 1.7
+  - 1.8
+  - tip

vendor/github.com/NYTimes/gziphandler/CODE_OF_CONDUCT.md

@@ -0,0 +1,75 @@
+---
+layout: code-of-conduct
+version: v1.0
+---
+
+This code of conduct outlines our expectations for participants within the **NYTimes/gziphandler** community, as well as steps to reporting unacceptable behavior. We are committed to providing a welcoming and inspiring community for all and expect our code of conduct to be honored. Anyone who violates this code of conduct may be banned from the community.
+
+Our open source community strives to:
+
+* **Be friendly and patient.**
+* **Be welcoming**: We strive to be a community that welcomes and supports people of all backgrounds and identities. This includes, but is not limited to members of any race, ethnicity, culture, national origin, colour, immigration status, social and economic class, educational level, sex, sexual orientation, gender identity and expression, age, size, family status, political belief, religion, and mental and physical ability.
+* **Be considerate**: Your work will be used by other people, and you in turn will depend on the work of others. Any decision you take will affect users and colleagues, and you should take those consequences into account when making decisions. Remember that we're a world-wide community, so you might not be communicating in someone else's primary language.
+* **Be respectful**:  Not all of us will agree all the time, but disagreement is no excuse for poor behavior and poor manners. We might all experience some frustration now and then, but we cannot allow that frustration to turn into a personal attack. It’s important to remember that a community where people feel uncomfortable or threatened is not a productive one.
+* **Be careful in the words that we choose**: we are a community of professionals, and we conduct ourselves professionally. Be kind to others. Do not insult or put down other participants. Harassment and other exclusionary behavior aren't acceptable.
+* **Try to understand why we disagree**: Disagreements, both social and technical, happen all the time. It is important that we resolve disagreements and differing views constructively. Remember that we’re different. The strength of our community comes from its diversity, people from a wide range of backgrounds. Different people have different perspectives on issues. Being unable to understand why someone holds a viewpoint doesn’t mean that they’re wrong. Don’t forget that it is human to err and blaming each other doesn’t get us anywhere. Instead, focus on helping to resolve issues and learning from mistakes.
+
+## Definitions
+
+Harassment includes, but is not limited to:
+
+- Offensive comments related to gender, gender identity and expression, sexual orientation, disability, mental illness, neuro(a)typicality, physical appearance, body size, race, age, regional discrimination, political or religious affiliation
+- Unwelcome comments regarding a person’s lifestyle choices and practices, including those related to food, health, parenting, drugs, and employment
+- Deliberate misgendering. This includes deadnaming or persistently using a pronoun that does not correctly reflect a person's gender identity. You must address people by the name they give you when not addressing them by their username or handle
+- Physical contact and simulated physical contact (eg, textual descriptions like “*hug*” or “*backrub*”) without consent or after a request to stop
+- Threats of violence, both physical and psychological
+- Incitement of violence towards any individual, including encouraging a person to commit suicide or to engage in self-harm
+- Deliberate intimidation
+- Stalking or following
+- Harassing photography or recording, including logging online activity for harassment purposes
+- Sustained disruption of discussion
+- Unwelcome sexual attention, including gratuitous or off-topic sexual images or behaviour
+- Pattern of inappropriate social contact, such as requesting/assuming inappropriate levels of intimacy with others
+- Continued one-on-one communication after requests to cease
+- Deliberate “outing” of any aspect of a person’s identity without their consent except as necessary to protect others from intentional abuse
+- Publication of non-harassing private communication
+
+Our open source community prioritizes marginalized people’s safety over privileged people’s comfort. We will not act on complaints regarding:
+
+- ‘Reverse’ -isms, including ‘reverse racism,’ ‘reverse sexism,’ and ‘cisphobia’
+- Reasonable communication of boundaries, such as “leave me alone,” “go away,” or “I’m not discussing this with you”
+- Refusal to explain or debate social justice concepts
+- Communicating in a ‘tone’ you don’t find congenial
+- Criticizing racist, sexist, cissexist, or otherwise oppressive behavior or assumptions
+
+
+### Diversity Statement
+
+We encourage everyone to participate and are committed to building a community for all. Although we will fail at times, we seek to treat everyone both as fairly and equally as possible. Whenever a participant has made a mistake, we expect them to take responsibility for it. If someone has been harmed or offended, it is our responsibility to listen carefully and respectfully, and do our best to right the wrong.
+
+Although this list cannot be exhaustive, we explicitly honor diversity in age, gender, gender identity or expression, culture, ethnicity, language, national origin, political beliefs, profession, race, religion, sexual orientation, socioeconomic status, and technical ability. We will not tolerate discrimination based on any of the protected
+characteristics above, including participants with disabilities.
+
+### Reporting Issues
+
+If you experience or witness unacceptable behavior—or have any other concerns—please report it by contacting us via **code@nytimes.com**. All reports will be handled with discretion. In your report please include:
+
+- Your contact information.
+- Names (real, nicknames, or pseudonyms) of any individuals involved. If there are additional witnesses, please
+include them as well. Your account of what occurred, and if you believe the incident is ongoing. If there is a publicly available record (e.g. a mailing list archive or a public IRC logger), please include a link.
+- Any additional information that may be helpful.
+
+After filing a report, a representative will contact you personally, review the incident, follow up with any additional questions, and make a decision as to how to respond. If the person who is harassing you is part of the response team, they will recuse themselves from handling your incident. If the complaint originates from a member of the response team, it will be handled by a different member of the response team. We will respect confidentiality requests for the purpose of protecting victims of abuse.
+
+### Attribution & Acknowledgements
+
+We all stand on the shoulders of giants across many open source communities.  We'd like to thank the communities and projects that established code of conducts and diversity statements as our inspiration:
+
+* [Django](https://www.djangoproject.com/conduct/reporting/)
+* [Python](https://www.python.org/community/diversity/)
+* [Ubuntu](http://www.ubuntu.com/about/about-ubuntu/conduct)
+* [Contributor Covenant](http://contributor-covenant.org/)
+* [Geek Feminism](http://geekfeminism.org/about/code-of-conduct/)
+* [Citizen Code of Conduct](http://citizencodeofconduct.org/)
+
+This Code of Conduct was based on https://github.com/todogroup/opencodeofconduct

vendor/github.com/NYTimes/gziphandler/CONTRIBUTING.md

@@ -0,0 +1,30 @@
+# Contributing to NYTimes/gziphandler
+
+This is an open source project started by handful of developers at The New York Times and open to the entire Go community.
+
+We really appreciate your help!
+
+## Filing issues
+
+When filing an issue, make sure to answer these five questions:
+
+1. What version of Go are you using (`go version`)?
+2. What operating system and processor architecture are you using?
+3. What did you do?
+4. What did you expect to see?
+5. What did you see instead?
+
+## Contributing code
+
+Before submitting changes, please follow these guidelines:
+
+1. Check the open issues and pull requests for existing discussions.
+2. Open an issue to discuss a new feature.
+3. Write tests.
+4. Make sure code follows the ['Go Code Review Comments'](https://github.com/golang/go/wiki/CodeReviewComments).
+5. Make sure your changes pass `go test`.
+6. Make sure the entire test suite passes locally and on Travis CI.
+7. Open a Pull Request.
+8. [Squash your commits](http://gitready.com/advanced/2009/02/10/squashing-commits-with-rebase.html) after receiving feedback and add a [great commit message](http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html).
+
+Unless otherwise noted, the gziphandler source files are distributed under the Apache 2.0-style license found in the LICENSE.md file.

vendor/github.com/NYTimes/gziphandler/LICENSE.md

@@ -0,0 +1,13 @@
+Copyright (c) 2015 The New York Times Company
+ 
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this library except in compliance with the License.
+You may obtain a copy of the License at
+ 
+    http://www.apache.org/licenses/LICENSE-2.0
+ 
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.

vendor/github.com/NYTimes/gziphandler/README.md

@@ -0,0 +1,52 @@
+Gzip Handler
+============
+
+This is a tiny Go package which wraps HTTP handlers to transparently gzip the
+response body, for clients which support it. Although it's usually simpler to
+leave that to a reverse proxy (like nginx or Varnish), this package is useful
+when that's undesirable.
+
+
+## Usage
+
+Call `GzipHandler` with any handler (an object which implements the
+`http.Handler` interface), and it'll return a new handler which gzips the
+response. For example:
+
+```go
+package main
+
+import (
+	"io"
+	"net/http"
+	"github.com/NYTimes/gziphandler"
+)
+
+func main() {
+	withoutGz := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "text/plain")
+		io.WriteString(w, "Hello, World")
+	})
+
+	withGz := gziphandler.GzipHandler(withoutGz)
+
+	http.Handle("/", withGz)
+	http.ListenAndServe("0.0.0.0:8000", nil)
+}
+```
+
+
+## Documentation
+
+The docs can be found at [godoc.org][docs], as usual.
+
+
+## License
+
+[Apache 2.0][license].
+
+
+
+
+[docs]:     https://godoc.org/github.com/nytimes/gziphandler
+[license]:  https://github.com/nytimes/gziphandler/blob/master/LICENSE.md

vendor/github.com/NYTimes/gziphandler/gzip.go

@@ -0,0 +1,332 @@
+package gziphandler
+
+import (
+	"bufio"
+	"compress/gzip"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"strconv"
+	"strings"
+	"sync"
+)
+
+const (
+	vary            = "Vary"
+	acceptEncoding  = "Accept-Encoding"
+	contentEncoding = "Content-Encoding"
+	contentType     = "Content-Type"
+	contentLength   = "Content-Length"
+)
+
+type codings map[string]float64
+
+const (
+	// DefaultQValue is the default qvalue to assign to an encoding if no explicit qvalue is set.
+	// This is actually kind of ambiguous in RFC 2616, so hopefully it's correct.
+	// The examples seem to indicate that it is.
+	DefaultQValue = 1.0
+
+	// DefaultMinSize defines the minimum size to reach to enable compression.
+	// It's 512 bytes.
+	DefaultMinSize = 512
+)
+
+// gzipWriterPools stores a sync.Pool for each compression level for reuse of
+// gzip.Writers. Use poolIndex to covert a compression level to an index into
+// gzipWriterPools.
+var gzipWriterPools [gzip.BestCompression - gzip.BestSpeed + 2]*sync.Pool
+
+func init() {
+	for i := gzip.BestSpeed; i <= gzip.BestCompression; i++ {
+		addLevelPool(i)
+	}
+	addLevelPool(gzip.DefaultCompression)
+}
+
+// poolIndex maps a compression level to its index into gzipWriterPools. It
+// assumes that level is a valid gzip compression level.
+func poolIndex(level int) int {
+	// gzip.DefaultCompression == -1, so we need to treat it special.
+	if level == gzip.DefaultCompression {
+		return gzip.BestCompression - gzip.BestSpeed + 1
+	}
+	return level - gzip.BestSpeed
+}
+
+func addLevelPool(level int) {
+	gzipWriterPools[poolIndex(level)] = &sync.Pool{
+		New: func() interface{} {
+			// NewWriterLevel only returns error on a bad level, we are guaranteeing
+			// that this will be a valid level so it is okay to ignore the returned
+			// error.
+			w, _ := gzip.NewWriterLevel(nil, level)
+			return w
+		},
+	}
+}
+
+// GzipResponseWriter provides an http.ResponseWriter interface, which gzips
+// bytes before writing them to the underlying response. This doesn't close the
+// writers, so don't forget to do that.
+// It can be configured to skip response smaller than minSize.
+type GzipResponseWriter struct {
+	http.ResponseWriter
+	index int // Index for gzipWriterPools.
+	gw    *gzip.Writer
+
+	code int // Saves the WriteHeader value.
+
+	minSize int    // Specifed the minimum response size to gzip. If the response length is bigger than this value, it is compressed.
+	buf     []byte // Holds the first part of the write before reaching the minSize or the end of the write.
+}
+
+// Write appends data to the gzip writer.
+func (w *GzipResponseWriter) Write(b []byte) (int, error) {
+	// If content type is not set.
+	if _, ok := w.Header()[contentType]; !ok {
+		// It infer it from the uncompressed body.
+		w.Header().Set(contentType, http.DetectContentType(b))
+	}
+
+	// GZIP responseWriter is initialized. Use the GZIP responseWriter.
+	if w.gw != nil {
+		n, err := w.gw.Write(b)
+		return n, err
+	}
+
+	// Save the write into a buffer for later use in GZIP responseWriter (if content is long enough) or at close with regular responseWriter.
+	// On the first write, w.buf changes from nil to a valid slice
+	w.buf = append(w.buf, b...)
+
+	// If the global writes are bigger than the minSize, compression is enable.
+	if len(w.buf) >= w.minSize {
+		err := w.startGzip()
+		if err != nil {
+			return 0, err
+		}
+	}
+
+	return len(b), nil
+}
+
+// startGzip initialize any GZIP specific informations.
+func (w *GzipResponseWriter) startGzip() error {
+
+	// Set the GZIP header.
+	w.Header().Set(contentEncoding, "gzip")
+
+	// if the Content-Length is already set, then calls to Write on gzip
+	// will fail to set the Content-Length header since its already set
+	// See: https://github.com/golang/go/issues/14975.
+	w.Header().Del(contentLength)
+
+	// Write the header to gzip response.
+	if w.code != 0 {
+		w.ResponseWriter.WriteHeader(w.code)
+	}
+
+	// Initialize the GZIP response.
+	w.init()
+
+	// Flush the buffer into the gzip reponse.
+	n, err := w.gw.Write(w.buf)
+
+	// This should never happen (per io.Writer docs), but if the write didn't
+	// accept the entire buffer but returned no specific error, we have no clue
+	// what's going on, so abort just to be safe.
+	if err == nil && n < len(w.buf) {
+		return io.ErrShortWrite
+	}
+
+	w.buf = nil
+	return err
+}
+
+// WriteHeader just saves the response code until close or GZIP effective writes.
+func (w *GzipResponseWriter) WriteHeader(code int) {
+	w.code = code
+}
+
+// init graps a new gzip writer from the gzipWriterPool and writes the correct
+// content encoding header.
+func (w *GzipResponseWriter) init() {
+	// Bytes written during ServeHTTP are redirected to this gzip writer
+	// before being written to the underlying response.
+	gzw := gzipWriterPools[w.index].Get().(*gzip.Writer)
+	gzw.Reset(w.ResponseWriter)
+	w.gw = gzw
+}
+
+// Close will close the gzip.Writer and will put it back in the gzipWriterPool.
+func (w *GzipResponseWriter) Close() error {
+	if w.gw == nil {
+		// Gzip not trigged yet, write out regular response.
+		if w.code != 0 {
+			w.ResponseWriter.WriteHeader(w.code)
+		}
+		if w.buf != nil {
+			_, writeErr := w.ResponseWriter.Write(w.buf)
+			// Returns the error if any at write.
+			if writeErr != nil {
+				return fmt.Errorf("gziphandler: write to regular responseWriter at close gets error: %q", writeErr.Error())
+			}
+		}
+		return nil
+	}
+
+	err := w.gw.Close()
+	gzipWriterPools[w.index].Put(w.gw)
+	w.gw = nil
+	return err
+}
+
+// Flush flushes the underlying *gzip.Writer and then the underlying
+// http.ResponseWriter if it is an http.Flusher. This makes GzipResponseWriter
+// an http.Flusher.
+func (w *GzipResponseWriter) Flush() {
+	if w.gw != nil {
+		w.gw.Flush()
+	}
+
+	if fw, ok := w.ResponseWriter.(http.Flusher); ok {
+		fw.Flush()
+	}
+}
+
+// Hijack implements http.Hijacker. If the underlying ResponseWriter is a
+// Hijacker, its Hijack method is returned. Otherwise an error is returned.
+func (w *GzipResponseWriter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
+	if hj, ok := w.ResponseWriter.(http.Hijacker); ok {
+		return hj.Hijack()
+	}
+	return nil, nil, fmt.Errorf("http.Hijacker interface is not supported")
+}
+
+// verify Hijacker interface implementation
+var _ http.Hijacker = &GzipResponseWriter{}
+
+// MustNewGzipLevelHandler behaves just like NewGzipLevelHandler except that in
+// an error case it panics rather than returning an error.
+func MustNewGzipLevelHandler(level int) func(http.Handler) http.Handler {
+	wrap, err := NewGzipLevelHandler(level)
+	if err != nil {
+		panic(err)
+	}
+	return wrap
+}
+
+// NewGzipLevelHandler returns a wrapper function (often known as middleware)
+// which can be used to wrap an HTTP handler to transparently gzip the response
+// body if the client supports it (via the Accept-Encoding header). Responses will
+// be encoded at the given gzip compression level. An error will be returned only
+// if an invalid gzip compression level is given, so if one can ensure the level
+// is valid, the returned error can be safely ignored.
+func NewGzipLevelHandler(level int) (func(http.Handler) http.Handler, error) {
+	return NewGzipLevelAndMinSize(level, DefaultMinSize)
+}
+
+// NewGzipLevelAndMinSize behave as NewGzipLevelHandler except it let the caller
+// specify the minimum size before compression.
+func NewGzipLevelAndMinSize(level, minSize int) (func(http.Handler) http.Handler, error) {
+	if level != gzip.DefaultCompression && (level < gzip.BestSpeed || level > gzip.BestCompression) {
+		return nil, fmt.Errorf("invalid compression level requested: %d", level)
+	}
+	if minSize < 0 {
+		return nil, fmt.Errorf("minimum size must be more than zero")
+	}
+	return func(h http.Handler) http.Handler {
+		index := poolIndex(level)
+
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			w.Header().Add(vary, acceptEncoding)
+
+			if acceptsGzip(r) {
+				gw := &GzipResponseWriter{
+					ResponseWriter: w,
+					index:          index,
+					minSize:        minSize,
+				}
+				defer gw.Close()
+
+				h.ServeHTTP(gw, r)
+			} else {
+				h.ServeHTTP(w, r)
+			}
+		})
+	}, nil
+}
+
+// GzipHandler wraps an HTTP handler, to transparently gzip the response body if
+// the client supports it (via the Accept-Encoding header). This will compress at
+// the default compression level.
+func GzipHandler(h http.Handler) http.Handler {
+	wrapper, _ := NewGzipLevelHandler(gzip.DefaultCompression)
+	return wrapper(h)
+}
+
+// acceptsGzip returns true if the given HTTP request indicates that it will
+// accept a gzipped response.
+func acceptsGzip(r *http.Request) bool {
+	acceptedEncodings, _ := parseEncodings(r.Header.Get(acceptEncoding))
+	return acceptedEncodings["gzip"] > 0.0
+}
+
+// parseEncodings attempts to parse a list of codings, per RFC 2616, as might
+// appear in an Accept-Encoding header. It returns a map of content-codings to
+// quality values, and an error containing the errors encountered. It's probably
+// safe to ignore those, because silently ignoring errors is how the internet
+// works.
+//
+// See: http://tools.ietf.org/html/rfc2616#section-14.3.
+func parseEncodings(s string) (codings, error) {
+	c := make(codings)
+	var e []string
+
+	for _, ss := range strings.Split(s, ",") {
+		coding, qvalue, err := parseCoding(ss)
+
+		if err != nil {
+			e = append(e, err.Error())
+		} else {
+			c[coding] = qvalue
+		}
+	}
+
+	// TODO (adammck): Use a proper multi-error struct, so the individual errors
+	//                 can be extracted if anyone cares.
+	if len(e) > 0 {
+		return c, fmt.Errorf("errors while parsing encodings: %s", strings.Join(e, ", "))
+	}
+
+	return c, nil
+}
+
+// parseCoding parses a single conding (content-coding with an optional qvalue),
+// as might appear in an Accept-Encoding header. It attempts to forgive minor
+// formatting errors.
+func parseCoding(s string) (coding string, qvalue float64, err error) {
+	for n, part := range strings.Split(s, ";") {
+		part = strings.TrimSpace(part)
+		qvalue = DefaultQValue
+
+		if n == 0 {
+			coding = strings.ToLower(part)
+		} else if strings.HasPrefix(part, "q=") {
+			qvalue, err = strconv.ParseFloat(strings.TrimPrefix(part, "q="), 64)
+
+			if qvalue < 0.0 {
+				qvalue = 0.0
+			} else if qvalue > 1.0 {
+				qvalue = 1.0
+			}
+		}
+	}
+
+	if coding == "" {
+		err = fmt.Errorf("empty content-coding")
+	}
+
+	return
+}

vendor/github.com/NYTimes/gziphandler/gzip_go18.go

@@ -0,0 +1,43 @@
+// +build go1.8
+
+package gziphandler
+
+import "net/http"
+
+// Push initiates an HTTP/2 server push.
+// Push returns ErrNotSupported if the client has disabled push or if push
+// is not supported on the underlying connection.
+func (w *GzipResponseWriter) Push(target string, opts *http.PushOptions) error {
+	pusher, ok := w.ResponseWriter.(http.Pusher)
+	if ok && pusher != nil {
+		return pusher.Push(target, setAcceptEncodingForPushOptions(opts))
+	}
+	return http.ErrNotSupported
+}
+
+// setAcceptEncodingForPushOptions sets "Accept-Encoding" : "gzip" for PushOptions without overriding existing headers.
+func setAcceptEncodingForPushOptions(opts *http.PushOptions) *http.PushOptions {
+
+	if opts == nil {
+		opts = &http.PushOptions{
+			Header: http.Header{
+				acceptEncoding: []string{"gzip"},
+			},
+		}
+		return opts
+	}
+
+	if opts.Header == nil {
+		opts.Header = http.Header{
+			acceptEncoding: []string{"gzip"},
+		}
+		return opts
+	}
+
+	if encoding := opts.Header.Get(acceptEncoding); encoding == "" {
+		opts.Header.Add(acceptEncoding, "gzip")
+		return opts
+	}
+
+	return opts
+}

vendor/github.com/coreos/go-semver/LICENSE

@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

vendor/github.com/coreos/go-semver/NOTICE

@@ -0,0 +1,5 @@
+CoreOS Project
+Copyright 2018 CoreOS, Inc
+
+This product includes software developed at CoreOS, Inc.
+(http://www.coreos.com/).

vendor/github.com/coreos/go-semver/semver/semver.go

@@ -0,0 +1,296 @@
+// Copyright 2013-2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Semantic Versions http://semver.org
+package semver
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+type Version struct {
+	Major      int64
+	Minor      int64
+	Patch      int64
+	PreRelease PreRelease
+	Metadata   string
+}
+
+type PreRelease string
+
+func splitOff(input *string, delim string) (val string) {
+	parts := strings.SplitN(*input, delim, 2)
+
+	if len(parts) == 2 {
+		*input = parts[0]
+		val = parts[1]
+	}
+
+	return val
+}
+
+func New(version string) *Version {
+	return Must(NewVersion(version))
+}
+
+func NewVersion(version string) (*Version, error) {
+	v := Version{}
+
+	if err := v.Set(version); err != nil {
+		return nil, err
+	}
+
+	return &v, nil
+}
+
+// Must is a helper for wrapping NewVersion and will panic if err is not nil.
+func Must(v *Version, err error) *Version {
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Set parses and updates v from the given version string. Implements flag.Value
+func (v *Version) Set(version string) error {
+	metadata := splitOff(&version, "+")
+	preRelease := PreRelease(splitOff(&version, "-"))
+	dotParts := strings.SplitN(version, ".", 3)
+
+	if len(dotParts) != 3 {
+		return fmt.Errorf("%s is not in dotted-tri format", version)
+	}
+
+	if err := validateIdentifier(string(preRelease)); err != nil {
+		return fmt.Errorf("failed to validate pre-release: %v", err)
+	}
+
+	if err := validateIdentifier(metadata); err != nil {
+		return fmt.Errorf("failed to validate metadata: %v", err)
+	}
+
+	parsed := make([]int64, 3, 3)
+
+	for i, v := range dotParts[:3] {
+		val, err := strconv.ParseInt(v, 10, 64)
+		parsed[i] = val
+		if err != nil {
+			return err
+		}
+	}
+
+	v.Metadata = metadata
+	v.PreRelease = preRelease
+	v.Major = parsed[0]
+	v.Minor = parsed[1]
+	v.Patch = parsed[2]
+	return nil
+}
+
+func (v Version) String() string {
+	var buffer bytes.Buffer
+
+	fmt.Fprintf(&buffer, "%d.%d.%d", v.Major, v.Minor, v.Patch)
+
+	if v.PreRelease != "" {
+		fmt.Fprintf(&buffer, "-%s", v.PreRelease)
+	}
+
+	if v.Metadata != "" {
+		fmt.Fprintf(&buffer, "+%s", v.Metadata)
+	}
+
+	return buffer.String()
+}
+
+func (v *Version) UnmarshalYAML(unmarshal func(interface{}) error) error {
+	var data string
+	if err := unmarshal(&data); err != nil {
+		return err
+	}
+	return v.Set(data)
+}
+
+func (v Version) MarshalJSON() ([]byte, error) {
+	return []byte(`"` + v.String() + `"`), nil
+}
+
+func (v *Version) UnmarshalJSON(data []byte) error {
+	l := len(data)
+	if l == 0 || string(data) == `""` {
+		return nil
+	}
+	if l < 2 || data[0] != '"' || data[l-1] != '"' {
+		return errors.New("invalid semver string")
+	}
+	return v.Set(string(data[1 : l-1]))
+}
+
+// Compare tests if v is less than, equal to, or greater than versionB,
+// returning -1, 0, or +1 respectively.
+func (v Version) Compare(versionB Version) int {
+	if cmp := recursiveCompare(v.Slice(), versionB.Slice()); cmp != 0 {
+		return cmp
+	}
+	return preReleaseCompare(v, versionB)
+}
+
+// Equal tests if v is equal to versionB.
+func (v Version) Equal(versionB Version) bool {
+	return v.Compare(versionB) == 0
+}
+
+// LessThan tests if v is less than versionB.
+func (v Version) LessThan(versionB Version) bool {
+	return v.Compare(versionB) < 0
+}
+
+// Slice converts the comparable parts of the semver into a slice of integers.
+func (v Version) Slice() []int64 {
+	return []int64{v.Major, v.Minor, v.Patch}
+}
+
+func (p PreRelease) Slice() []string {
+	preRelease := string(p)
+	return strings.Split(preRelease, ".")
+}
+
+func preReleaseCompare(versionA Version, versionB Version) int {
+	a := versionA.PreRelease
+	b := versionB.PreRelease
+
+	/* Handle the case where if two versions are otherwise equal it is the
+	 * one without a PreRelease that is greater */
+	if len(a) == 0 && (len(b) > 0) {
+		return 1
+	} else if len(b) == 0 && (len(a) > 0) {
+		return -1
+	}
+
+	// If there is a prerelease, check and compare each part.
+	return recursivePreReleaseCompare(a.Slice(), b.Slice())
+}
+
+func recursiveCompare(versionA []int64, versionB []int64) int {
+	if len(versionA) == 0 {
+		return 0
+	}
+
+	a := versionA[0]
+	b := versionB[0]
+
+	if a > b {
+		return 1
+	} else if a < b {
+		return -1
+	}
+
+	return recursiveCompare(versionA[1:], versionB[1:])
+}
+
+func recursivePreReleaseCompare(versionA []string, versionB []string) int {
+	// A larger set of pre-release fields has a higher precedence than a smaller set,
+	// if all of the preceding identifiers are equal.
+	if len(versionA) == 0 {
+		if len(versionB) > 0 {
+			return -1
+		}
+		return 0
+	} else if len(versionB) == 0 {
+		// We're longer than versionB so return 1.
+		return 1
+	}
+
+	a := versionA[0]
+	b := versionB[0]
+
+	aInt := false
+	bInt := false
+
+	aI, err := strconv.Atoi(versionA[0])
+	if err == nil {
+		aInt = true
+	}
+
+	bI, err := strconv.Atoi(versionB[0])
+	if err == nil {
+		bInt = true
+	}
+
+	// Numeric identifiers always have lower precedence than non-numeric identifiers.
+	if aInt && !bInt {
+		return -1
+	} else if !aInt && bInt {
+		return 1
+	}
+
+	// Handle Integer Comparison
+	if aInt && bInt {
+		if aI > bI {
+			return 1
+		} else if aI < bI {
+			return -1
+		}
+	}
+
+	// Handle String Comparison
+	if a > b {
+		return 1
+	} else if a < b {
+		return -1
+	}
+
+	return recursivePreReleaseCompare(versionA[1:], versionB[1:])
+}
+
+// BumpMajor increments the Major field by 1 and resets all other fields to their default values
+func (v *Version) BumpMajor() {
+	v.Major += 1
+	v.Minor = 0
+	v.Patch = 0
+	v.PreRelease = PreRelease("")
+	v.Metadata = ""
+}
+
+// BumpMinor increments the Minor field by 1 and resets all other fields to their default values
+func (v *Version) BumpMinor() {
+	v.Minor += 1
+	v.Patch = 0
+	v.PreRelease = PreRelease("")
+	v.Metadata = ""
+}
+
+// BumpPatch increments the Patch field by 1 and resets all other fields to their default values
+func (v *Version) BumpPatch() {
+	v.Patch += 1
+	v.PreRelease = PreRelease("")
+	v.Metadata = ""
+}
+
+// validateIdentifier makes sure the provided identifier satisfies semver spec
+func validateIdentifier(id string) error {
+	if id != "" && !reIdentifier.MatchString(id) {
+		return fmt.Errorf("%s is not a valid semver identifier", id)
+	}
+	return nil
+}
+
+// reIdentifier is a regular expression used to check that pre-release and metadata
+// identifiers satisfy the spec requirements
+var reIdentifier = regexp.MustCompile(`^[0-9A-Za-z-]+(\.[0-9A-Za-z-]+)*$`)

vendor/github.com/coreos/go-semver/semver/sort.go

@@ -0,0 +1,38 @@
+// Copyright 2013-2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package semver
+
+import (
+	"sort"
+)
+
+type Versions []*Version
+
+func (s Versions) Len() int {
+	return len(s)
+}
+
+func (s Versions) Swap(i, j int) {
+	s[i], s[j] = s[j], s[i]
+}
+
+func (s Versions) Less(i, j int) bool {
+	return s[i].LessThan(*s[j])
+}
+
+// Sort sorts the given slice of Version
+func Sort(versions []*Version) {
+	sort.Sort(Versions(versions))
+}

vendor/github.com/coreos/go-systemd/LICENSE

@@ -0,0 +1,191 @@
+Apache License
+Version 2.0, January 2004
+http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+"License" shall mean the terms and conditions for use, reproduction, and
+distribution as defined by Sections 1 through 9 of this document.
+
+"Licensor" shall mean the copyright owner or entity authorized by the copyright
+owner that is granting the License.
+
+"Legal Entity" shall mean the union of the acting entity and all other entities
+that control, are controlled by, or are under common control with that entity.
+For the purposes of this definition, "control" means (i) the power, direct or
+indirect, to cause the direction or management of such entity, whether by
+contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the
+outstanding shares, or (iii) beneficial ownership of such entity.
+
+"You" (or "Your") shall mean an individual or Legal Entity exercising
+permissions granted by this License.
+
+"Source" form shall mean the preferred form for making modifications, including
+but not limited to software source code, documentation source, and configuration
+files.
+
+"Object" form shall mean any form resulting from mechanical transformation or
+translation of a Source form, including but not limited to compiled object code,
+generated documentation, and conversions to other media types.
+
+"Work" shall mean the work of authorship, whether in Source or Object form, made
+available under the License, as indicated by a copyright notice that is included
+in or attached to the work (an example is provided in the Appendix below).
+
+"Derivative Works" shall mean any work, whether in Source or Object form, that
+is based on (or derived from) the Work and for which the editorial revisions,
+annotations, elaborations, or other modifications represent, as a whole, an
+original work of authorship. For the purposes of this License, Derivative Works
+shall not include works that remain separable from, or merely link (or bind by
+name) to the interfaces of, the Work and Derivative Works thereof.
+
+"Contribution" shall mean any work of authorship, including the original version
+of the Work and any modifications or additions to that Work or Derivative Works
+thereof, that is intentionally submitted to Licensor for inclusion in the Work
+by the copyright owner or by an individual or Legal Entity authorized to submit
+on behalf of the copyright owner. For the purposes of this definition,
+"submitted" means any form of electronic, verbal, or written communication sent
+to the Licensor or its representatives, including but not limited to
+communication on electronic mailing lists, source code control systems, and
+issue tracking systems that are managed by, or on behalf of, the Licensor for
+the purpose of discussing and improving the Work, but excluding communication
+that is conspicuously marked or otherwise designated in writing by the copyright
+owner as "Not a Contribution."
+
+"Contributor" shall mean Licensor and any individual or Legal Entity on behalf
+of whom a Contribution has been received by Licensor and subsequently
+incorporated within the Work.
+
+2. Grant of Copyright License.
+
+Subject to the terms and conditions of this License, each Contributor hereby
+grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free,
+irrevocable copyright license to reproduce, prepare Derivative Works of,
+publicly display, publicly perform, sublicense, and distribute the Work and such
+Derivative Works in Source or Object form.
+
+3. Grant of Patent License.
+
+Subject to the terms and conditions of this License, each Contributor hereby
+grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free,
+irrevocable (except as stated in this section) patent license to make, have
+made, use, offer to sell, sell, import, and otherwise transfer the Work, where
+such license applies only to those patent claims licensable by such Contributor
+that are necessarily infringed by their Contribution(s) alone or by combination
+of their Contribution(s) with the Work to which such Contribution(s) was
+submitted. If You institute patent litigation against any entity (including a
+cross-claim or counterclaim in a lawsuit) alleging that the Work or a
+Contribution incorporated within the Work constitutes direct or contributory
+patent infringement, then any patent licenses granted to You under this License
+for that Work shall terminate as of the date such litigation is filed.
+
+4. Redistribution.
+
+You may reproduce and distribute copies of the Work or Derivative Works thereof
+in any medium, with or without modifications, and in Source or Object form,
+provided that You meet the following conditions:
+
+You must give any other recipients of the Work or Derivative Works a copy of
+this License; and
+You must cause any modified files to carry prominent notices stating that You
+changed the files; and
+You must retain, in the Source form of any Derivative Works that You distribute,
+all copyright, patent, trademark, and attribution notices from the Source form
+of the Work, excluding those notices that do not pertain to any part of the
+Derivative Works; and
+If the Work includes a "NOTICE" text file as part of its distribution, then any
+Derivative Works that You distribute must include a readable copy of the
+attribution notices contained within such NOTICE file, excluding those notices
+that do not pertain to any part of the Derivative Works, in at least one of the
+following places: within a NOTICE text file distributed as part of the
+Derivative Works; within the Source form or documentation, if provided along
+with the Derivative Works; or, within a display generated by the Derivative
+Works, if and wherever such third-party notices normally appear. The contents of
+the NOTICE file are for informational purposes only and do not modify the
+License. You may add Your own attribution notices within Derivative Works that
+You distribute, alongside or as an addendum to the NOTICE text from the Work,
+provided that such additional attribution notices cannot be construed as
+modifying the License.
+You may add Your own copyright statement to Your modifications and may provide
+additional or different license terms and conditions for use, reproduction, or
+distribution of Your modifications, or for any such Derivative Works as a whole,
+provided Your use, reproduction, and distribution of the Work otherwise complies
+with the conditions stated in this License.
+
+5. Submission of Contributions.
+
+Unless You explicitly state otherwise, any Contribution intentionally submitted
+for inclusion in the Work by You to the Licensor shall be under the terms and
+conditions of this License, without any additional terms or conditions.
+Notwithstanding the above, nothing herein shall supersede or modify the terms of
+any separate license agreement you may have executed with Licensor regarding
+such Contributions.
+
+6. Trademarks.
+
+This License does not grant permission to use the trade names, trademarks,
+service marks, or product names of the Licensor, except as required for
+reasonable and customary use in describing the origin of the Work and
+reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty.
+
+Unless required by applicable law or agreed to in writing, Licensor provides the
+Work (and each Contributor provides its Contributions) on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied,
+including, without limitation, any warranties or conditions of TITLE,
+NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are
+solely responsible for determining the appropriateness of using or
+redistributing the Work and assume any risks associated with Your exercise of
+permissions under this License.
+
+8. Limitation of Liability.
+
+In no event and under no legal theory, whether in tort (including negligence),
+contract, or otherwise, unless required by applicable law (such as deliberate
+and grossly negligent acts) or agreed to in writing, shall any Contributor be
+liable to You for damages, including any direct, indirect, special, incidental,
+or consequential damages of any character arising as a result of this License or
+out of the use or inability to use the Work (including but not limited to
+damages for loss of goodwill, work stoppage, computer failure or malfunction, or
+any and all other commercial damages or losses), even if such Contributor has
+been advised of the possibility of such damages.
+
+9. Accepting Warranty or Additional Liability.
+
+While redistributing the Work or Derivative Works thereof, You may choose to
+offer, and charge a fee for, acceptance of support, warranty, indemnity, or
+other liability obligations and/or rights consistent with this License. However,
+in accepting such obligations, You may act only on Your own behalf and on Your
+sole responsibility, not on behalf of any other Contributor, and only if You
+agree to indemnify, defend, and hold each Contributor harmless for any liability
+incurred by, or claims asserted against, such Contributor by reason of your
+accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
+
+APPENDIX: How to apply the Apache License to your work
+
+To apply the Apache License to your work, attach the following boilerplate
+notice, with the fields enclosed by brackets "[]" replaced with your own
+identifying information. (Don't include the brackets!) The text should be
+enclosed in the appropriate comment syntax for the file format. We also
+recommend that a file or class name and description of purpose be included on
+the same "printed page" as the copyright notice for easier identification within
+third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

vendor/github.com/coreos/go-systemd/NOTICE

@@ -0,0 +1,5 @@
+CoreOS Project
+Copyright 2018 CoreOS, Inc
+
+This product includes software developed at CoreOS, Inc.
+(http://www.coreos.com/).

vendor/github.com/coreos/go-systemd/daemon/sdnotify.go

@@ -0,0 +1,84 @@
+// Copyright 2014 Docker, Inc.
+// Copyright 2015-2018 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// Package daemon provides a Go implementation of the sd_notify protocol.
+// It can be used to inform systemd of service start-up completion, watchdog
+// events, and other status changes.
+//
+// https://www.freedesktop.org/software/systemd/man/sd_notify.html#Description
+package daemon
+
+import (
+	"net"
+	"os"
+)
+
+const (
+	// SdNotifyReady tells the service manager that service startup is finished
+	// or the service finished loading its configuration.
+	SdNotifyReady = "READY=1"
+
+	// SdNotifyStopping tells the service manager that the service is beginning
+	// its shutdown.
+	SdNotifyStopping = "STOPPING=1"
+
+	// SdNotifyReloading tells the service manager that this service is
+	// reloading its configuration. Note that you must call SdNotifyReady when
+	// it completed reloading.
+	SdNotifyReloading = "RELOADING=1"
+
+	// SdNotifyWatchdog tells the service manager to update the watchdog
+	// timestamp for the service.
+	SdNotifyWatchdog = "WATCHDOG=1"
+)
+
+// SdNotify sends a message to the init daemon. It is common to ignore the error.
+// If `unsetEnvironment` is true, the environment variable `NOTIFY_SOCKET`
+// will be unconditionally unset.
+//
+// It returns one of the following:
+// (false, nil) - notification not supported (i.e. NOTIFY_SOCKET is unset)
+// (false, err) - notification supported, but failure happened (e.g. error connecting to NOTIFY_SOCKET or while sending data)
+// (true, nil) - notification supported, data has been sent
+func SdNotify(unsetEnvironment bool, state string) (bool, error) {
+	socketAddr := &net.UnixAddr{
+		Name: os.Getenv("NOTIFY_SOCKET"),
+		Net:  "unixgram",
+	}
+
+	// NOTIFY_SOCKET not set
+	if socketAddr.Name == "" {
+		return false, nil
+	}
+
+	if unsetEnvironment {
+		if err := os.Unsetenv("NOTIFY_SOCKET"); err != nil {
+			return false, err
+		}
+	}
+
+	conn, err := net.DialUnix(socketAddr.Net, nil, socketAddr)
+	// Error connecting to NOTIFY_SOCKET
+	if err != nil {
+		return false, err
+	}
+	defer conn.Close()
+
+	if _, err = conn.Write([]byte(state)); err != nil {
+		return false, err
+	}
+	return true, nil
+}

vendor/github.com/coreos/go-systemd/daemon/watchdog.go

@@ -0,0 +1,73 @@
+// Copyright 2016 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package daemon
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+	"time"
+)
+
+// SdWatchdogEnabled returns watchdog information for a service.
+// Processes should call daemon.SdNotify(false, daemon.SdNotifyWatchdog) every
+// time / 2.
+// If `unsetEnvironment` is true, the environment variables `WATCHDOG_USEC` and
+// `WATCHDOG_PID` will be unconditionally unset.
+//
+// It returns one of the following:
+// (0, nil) - watchdog isn't enabled or we aren't the watched PID.
+// (0, err) - an error happened (e.g. error converting time).
+// (time, nil) - watchdog is enabled and we can send ping.
+//   time is delay before inactive service will be killed.
+func SdWatchdogEnabled(unsetEnvironment bool) (time.Duration, error) {
+	wusec := os.Getenv("WATCHDOG_USEC")
+	wpid := os.Getenv("WATCHDOG_PID")
+	if unsetEnvironment {
+		wusecErr := os.Unsetenv("WATCHDOG_USEC")
+		wpidErr := os.Unsetenv("WATCHDOG_PID")
+		if wusecErr != nil {
+			return 0, wusecErr
+		}
+		if wpidErr != nil {
+			return 0, wpidErr
+		}
+	}
+
+	if wusec == "" {
+		return 0, nil
+	}
+	s, err := strconv.Atoi(wusec)
+	if err != nil {
+		return 0, fmt.Errorf("error converting WATCHDOG_USEC: %s", err)
+	}
+	if s <= 0 {
+		return 0, fmt.Errorf("error WATCHDOG_USEC must be a positive number")
+	}
+	interval := time.Duration(s) * time.Microsecond
+
+	if wpid == "" {
+		return interval, nil
+	}
+	p, err := strconv.Atoi(wpid)
+	if err != nil {
+		return 0, fmt.Errorf("error converting WATCHDOG_PID: %s", err)
+	}
+	if os.Getpid() != p {
+		return 0, nil
+	}
+
+	return interval, nil
+}

vendor/github.com/coreos/go-systemd/journal/journal.go

@@ -0,0 +1,225 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package journal provides write bindings to the local systemd journal.
+// It is implemented in pure Go and connects to the journal directly over its
+// unix socket.
+//
+// To read from the journal, see the "sdjournal" package, which wraps the
+// sd-journal a C API.
+//
+// http://www.freedesktop.org/software/systemd/man/systemd-journald.service.html
+package journal
+
+import (
+	"bytes"
+	"encoding/binary"
+	"errors"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net"
+	"os"
+	"strconv"
+	"strings"
+	"sync"
+	"sync/atomic"
+	"syscall"
+	"unsafe"
+)
+
+// Priority of a journal message
+type Priority int
+
+const (
+	PriEmerg Priority = iota
+	PriAlert
+	PriCrit
+	PriErr
+	PriWarning
+	PriNotice
+	PriInfo
+	PriDebug
+)
+
+var (
+	// This can be overridden at build-time:
+	// https://github.com/golang/go/wiki/GcToolchainTricks#including-build-information-in-the-executable
+	journalSocket = "/run/systemd/journal/socket"
+
+	// unixConnPtr atomically holds the local unconnected Unix-domain socket.
+	// Concrete safe pointer type: *net.UnixConn
+	unixConnPtr unsafe.Pointer
+	// onceConn ensures that unixConnPtr is initialized exactly once.
+	onceConn sync.Once
+)
+
+func init() {
+	onceConn.Do(initConn)
+}
+
+// Enabled checks whether the local systemd journal is available for logging.
+func Enabled() bool {
+	onceConn.Do(initConn)
+
+	if (*net.UnixConn)(atomic.LoadPointer(&unixConnPtr)) == nil {
+		return false
+	}
+
+	if _, err := net.Dial("unixgram", journalSocket); err != nil {
+		return false
+	}
+
+	return true
+}
+
+// Send a message to the local systemd journal. vars is a map of journald
+// fields to values.  Fields must be composed of uppercase letters, numbers,
+// and underscores, but must not start with an underscore. Within these
+// restrictions, any arbitrary field name may be used.  Some names have special
+// significance: see the journalctl documentation
+// (http://www.freedesktop.org/software/systemd/man/systemd.journal-fields.html)
+// for more details.  vars may be nil.
+func Send(message string, priority Priority, vars map[string]string) error {
+	conn := (*net.UnixConn)(atomic.LoadPointer(&unixConnPtr))
+	if conn == nil {
+		return errors.New("could not initialize socket to journald")
+	}
+
+	socketAddr := &net.UnixAddr{
+		Name: journalSocket,
+		Net:  "unixgram",
+	}
+
+	data := new(bytes.Buffer)
+	appendVariable(data, "PRIORITY", strconv.Itoa(int(priority)))
+	appendVariable(data, "MESSAGE", message)
+	for k, v := range vars {
+		appendVariable(data, k, v)
+	}
+
+	_, _, err := conn.WriteMsgUnix(data.Bytes(), nil, socketAddr)
+	if err == nil {
+		return nil
+	}
+	if !isSocketSpaceError(err) {
+		return err
+	}
+
+	// Large log entry, send it via tempfile and ancillary-fd.
+	file, err := tempFd()
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+	_, err = io.Copy(file, data)
+	if err != nil {
+		return err
+	}
+	rights := syscall.UnixRights(int(file.Fd()))
+	_, _, err = conn.WriteMsgUnix([]byte{}, rights, socketAddr)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// Print prints a message to the local systemd journal using Send().
+func Print(priority Priority, format string, a ...interface{}) error {
+	return Send(fmt.Sprintf(format, a...), priority, nil)
+}
+
+func appendVariable(w io.Writer, name, value string) {
+	if err := validVarName(name); err != nil {
+		fmt.Fprintf(os.Stderr, "variable name %s contains invalid character, ignoring\n", name)
+	}
+	if strings.ContainsRune(value, '\n') {
+		/* When the value contains a newline, we write:
+		 * - the variable name, followed by a newline
+		 * - the size (in 64bit little endian format)
+		 * - the data, followed by a newline
+		 */
+		fmt.Fprintln(w, name)
+		binary.Write(w, binary.LittleEndian, uint64(len(value)))
+		fmt.Fprintln(w, value)
+	} else {
+		/* just write the variable and value all on one line */
+		fmt.Fprintf(w, "%s=%s\n", name, value)
+	}
+}
+
+// validVarName validates a variable name to make sure journald will accept it.
+// The variable name must be in uppercase and consist only of characters,
+// numbers and underscores, and may not begin with an underscore:
+// https://www.freedesktop.org/software/systemd/man/sd_journal_print.html
+func validVarName(name string) error {
+	if name == "" {
+		return errors.New("Empty variable name")
+	} else if name[0] == '_' {
+		return errors.New("Variable name begins with an underscore")
+	}
+
+	for _, c := range name {
+		if !(('A' <= c && c <= 'Z') || ('0' <= c && c <= '9') || c == '_') {
+			return errors.New("Variable name contains invalid characters")
+		}
+	}
+	return nil
+}
+
+// isSocketSpaceError checks whether the error is signaling
+// an "overlarge message" condition.
+func isSocketSpaceError(err error) bool {
+	opErr, ok := err.(*net.OpError)
+	if !ok || opErr == nil {
+		return false
+	}
+
+	sysErr, ok := opErr.Err.(*os.SyscallError)
+	if !ok || sysErr == nil {
+		return false
+	}
+
+	return sysErr.Err == syscall.EMSGSIZE || sysErr.Err == syscall.ENOBUFS
+}
+
+// tempFd creates a temporary, unlinked file under `/dev/shm`.
+func tempFd() (*os.File, error) {
+	file, err := ioutil.TempFile("/dev/shm/", "journal.XXXXX")
+	if err != nil {
+		return nil, err
+	}
+	err = syscall.Unlink(file.Name())
+	if err != nil {
+		return nil, err
+	}
+	return file, nil
+}
+
+// initConn initializes the global `unixConnPtr` socket.
+// It is meant to be called exactly once, at program startup.
+func initConn() {
+	autobind, err := net.ResolveUnixAddr("unixgram", "")
+	if err != nil {
+		return
+	}
+
+	sock, err := net.ListenUnixgram("unixgram", autobind)
+	if err != nil {
+		return
+	}
+
+	atomic.StorePointer(&unixConnPtr, unsafe.Pointer(sock))
+}

vendor/github.com/coreos/pkg/LICENSE

@@ -0,0 +1,202 @@
+Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "{}"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright {yyyy} {name of copyright owner}
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+

vendor/github.com/coreos/pkg/NOTICE

@@ -0,0 +1,5 @@
+CoreOS Project
+Copyright 2014 CoreOS, Inc
+
+This product includes software developed at CoreOS, Inc.
+(http://www.coreos.com/).

vendor/github.com/coreos/pkg/capnslog/README.md

@@ -0,0 +1,39 @@
+# capnslog, the CoreOS logging package
+
+There are far too many logging packages out there, with varying degrees of licenses, far too many features (colorization, all sorts of log frameworks) or are just a pain to use (lack of `Fatalln()`?).
+capnslog provides a simple but consistent logging interface suitable for all kinds of projects.
+
+### Design Principles
+
+##### `package main` is the place where logging gets turned on and routed
+
+A library should not touch log options, only generate log entries. Libraries are silent until main lets them speak.
+
+##### All log options are runtime-configurable. 
+
+Still the job of `main` to expose these configurations. `main` may delegate this to, say, a configuration webhook, but does so explicitly. 
+
+##### There is one log object per package. It is registered under its repository and package name.
+
+`main` activates logging for its repository and any dependency repositories it would also like to have output in its logstream. `main` also dictates at which level each subpackage logs.
+
+##### There is *one* output stream, and it is an `io.Writer` composed with a formatter.
+
+Splitting streams is probably not the job of your program, but rather, your log aggregation framework. If you must split output streams, again, `main` configures this and you can write a very simple two-output struct that satisfies io.Writer.
+
+Fancy colorful formatting and JSON output are beyond the scope of a basic logging framework -- they're application/log-collector dependent. These are, at best, provided as options, but more likely, provided by your application.
+
+##### Log objects are an interface
+
+An object knows best how to print itself. Log objects can collect more interesting metadata if they wish, however, because text isn't going away anytime soon, they must all be marshalable to text. The simplest log object is a string, which returns itself. If you wish to do more fancy tricks for printing your log objects, see also JSON output -- introspect and write a formatter which can handle your advanced log interface. Making strings is the only thing guaranteed.
+
+##### Log levels have specific meanings:
+
+  * Critical: Unrecoverable. Must fail.
+  * Error: Data has been lost, a request has failed for a bad reason, or a required resource has been lost
+  * Warning: (Hopefully) Temporary conditions that may cause errors, but may work fine. A replica disappearing (that may reconnect) is a warning.
+  * Notice: Normal, but important (uncommon) log information.
+  * Info: Normal, working log information, everything is fine, but helpful notices for auditing or common operations.
+  * Debug: Everything is still fine, but even common operations may be logged, and less helpful but more quantity of notices.
+  * Trace: Anything goes, from logging every function call as part of a common operation, to tracing execution of a query.
+

vendor/github.com/coreos/pkg/capnslog/formatters.go

@@ -0,0 +1,157 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package capnslog
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"log"
+	"runtime"
+	"strings"
+	"time"
+)
+
+type Formatter interface {
+	Format(pkg string, level LogLevel, depth int, entries ...interface{})
+	Flush()
+}
+
+func NewStringFormatter(w io.Writer) Formatter {
+	return &StringFormatter{
+		w: bufio.NewWriter(w),
+	}
+}
+
+type StringFormatter struct {
+	w *bufio.Writer
+}
+
+func (s *StringFormatter) Format(pkg string, l LogLevel, i int, entries ...interface{}) {
+	now := time.Now().UTC()
+	s.w.WriteString(now.Format(time.RFC3339))
+	s.w.WriteByte(' ')
+	writeEntries(s.w, pkg, l, i, entries...)
+	s.Flush()
+}
+
+func writeEntries(w *bufio.Writer, pkg string, _ LogLevel, _ int, entries ...interface{}) {
+	if pkg != "" {
+		w.WriteString(pkg + ": ")
+	}
+	str := fmt.Sprint(entries...)
+	endsInNL := strings.HasSuffix(str, "\n")
+	w.WriteString(str)
+	if !endsInNL {
+		w.WriteString("\n")
+	}
+}
+
+func (s *StringFormatter) Flush() {
+	s.w.Flush()
+}
+
+func NewPrettyFormatter(w io.Writer, debug bool) Formatter {
+	return &PrettyFormatter{
+		w:     bufio.NewWriter(w),
+		debug: debug,
+	}
+}
+
+type PrettyFormatter struct {
+	w     *bufio.Writer
+	debug bool
+}
+
+func (c *PrettyFormatter) Format(pkg string, l LogLevel, depth int, entries ...interface{}) {
+	now := time.Now()
+	ts := now.Format("2006-01-02 15:04:05")
+	c.w.WriteString(ts)
+	ms := now.Nanosecond() / 1000
+	c.w.WriteString(fmt.Sprintf(".%06d", ms))
+	if c.debug {
+		_, file, line, ok := runtime.Caller(depth) // It's always the same number of frames to the user's call.
+		if !ok {
+			file = "???"
+			line = 1
+		} else {
+			slash := strings.LastIndex(file, "/")
+			if slash >= 0 {
+				file = file[slash+1:]
+			}
+		}
+		if line < 0 {
+			line = 0 // not a real line number
+		}
+		c.w.WriteString(fmt.Sprintf(" [%s:%d]", file, line))
+	}
+	c.w.WriteString(fmt.Sprint(" ", l.Char(), " | "))
+	writeEntries(c.w, pkg, l, depth, entries...)
+	c.Flush()
+}
+
+func (c *PrettyFormatter) Flush() {
+	c.w.Flush()
+}
+
+// LogFormatter emulates the form of the traditional built-in logger.
+type LogFormatter struct {
+	logger *log.Logger
+	prefix string
+}
+
+// NewLogFormatter is a helper to produce a new LogFormatter struct. It uses the
+// golang log package to actually do the logging work so that logs look similar.
+func NewLogFormatter(w io.Writer, prefix string, flag int) Formatter {
+	return &LogFormatter{
+		logger: log.New(w, "", flag), // don't use prefix here
+		prefix: prefix,               // save it instead
+	}
+}
+
+// Format builds a log message for the LogFormatter. The LogLevel is ignored.
+func (lf *LogFormatter) Format(pkg string, _ LogLevel, _ int, entries ...interface{}) {
+	str := fmt.Sprint(entries...)
+	prefix := lf.prefix
+	if pkg != "" {
+		prefix = fmt.Sprintf("%s%s: ", prefix, pkg)
+	}
+	lf.logger.Output(5, fmt.Sprintf("%s%v", prefix, str)) // call depth is 5
+}
+
+// Flush is included so that the interface is complete, but is a no-op.
+func (lf *LogFormatter) Flush() {
+	// noop
+}
+
+// NilFormatter is a no-op log formatter that does nothing.
+type NilFormatter struct {
+}
+
+// NewNilFormatter is a helper to produce a new LogFormatter struct. It logs no
+// messages so that you can cause part of your logging to be silent.
+func NewNilFormatter() Formatter {
+	return &NilFormatter{}
+}
+
+// Format does nothing.
+func (_ *NilFormatter) Format(_ string, _ LogLevel, _ int, _ ...interface{}) {
+	// noop
+}
+
+// Flush is included so that the interface is complete, but is a no-op.
+func (_ *NilFormatter) Flush() {
+	// noop
+}

vendor/github.com/coreos/pkg/capnslog/glog_formatter.go

@@ -0,0 +1,96 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package capnslog
+
+import (
+	"bufio"
+	"bytes"
+	"io"
+	"os"
+	"runtime"
+	"strconv"
+	"strings"
+	"time"
+)
+
+var pid = os.Getpid()
+
+type GlogFormatter struct {
+	StringFormatter
+}
+
+func NewGlogFormatter(w io.Writer) *GlogFormatter {
+	g := &GlogFormatter{}
+	g.w = bufio.NewWriter(w)
+	return g
+}
+
+func (g GlogFormatter) Format(pkg string, level LogLevel, depth int, entries ...interface{}) {
+	g.w.Write(GlogHeader(level, depth+1))
+	g.StringFormatter.Format(pkg, level, depth+1, entries...)
+}
+
+func GlogHeader(level LogLevel, depth int) []byte {
+	// Lmmdd hh:mm:ss.uuuuuu threadid file:line]
+	now := time.Now().UTC()
+	_, file, line, ok := runtime.Caller(depth) // It's always the same number of frames to the user's call.
+	if !ok {
+		file = "???"
+		line = 1
+	} else {
+		slash := strings.LastIndex(file, "/")
+		if slash >= 0 {
+			file = file[slash+1:]
+		}
+	}
+	if line < 0 {
+		line = 0 // not a real line number
+	}
+	buf := &bytes.Buffer{}
+	buf.Grow(30)
+	_, month, day := now.Date()
+	hour, minute, second := now.Clock()
+	buf.WriteString(level.Char())
+	twoDigits(buf, int(month))
+	twoDigits(buf, day)
+	buf.WriteByte(' ')
+	twoDigits(buf, hour)
+	buf.WriteByte(':')
+	twoDigits(buf, minute)
+	buf.WriteByte(':')
+	twoDigits(buf, second)
+	buf.WriteByte('.')
+	buf.WriteString(strconv.Itoa(now.Nanosecond() / 1000))
+	buf.WriteByte('Z')
+	buf.WriteByte(' ')
+	buf.WriteString(strconv.Itoa(pid))
+	buf.WriteByte(' ')
+	buf.WriteString(file)
+	buf.WriteByte(':')
+	buf.WriteString(strconv.Itoa(line))
+	buf.WriteByte(']')
+	buf.WriteByte(' ')
+	return buf.Bytes()
+}
+
+const digits = "0123456789"
+
+func twoDigits(b *bytes.Buffer, d int) {
+	c2 := digits[d%10]
+	d /= 10
+	c1 := digits[d%10]
+	b.WriteByte(c1)
+	b.WriteByte(c2)
+}

vendor/github.com/coreos/pkg/capnslog/init.go

@@ -0,0 +1,49 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// +build !windows
+
+package capnslog
+
+import (
+	"io"
+	"os"
+	"syscall"
+)
+
+// Here's where the opinionation comes in. We need some sensible defaults,
+// especially after taking over the log package. Your project (whatever it may
+// be) may see things differently. That's okay; there should be no defaults in
+// the main package that cannot be controlled or overridden programatically,
+// otherwise it's a bug. Doing so is creating your own init_log.go file much
+// like this one.
+
+func init() {
+	initHijack()
+
+	// Go `log` package uses os.Stderr.
+	SetFormatter(NewDefaultFormatter(os.Stderr))
+	SetGlobalLogLevel(INFO)
+}
+
+func NewDefaultFormatter(out io.Writer) Formatter {
+	if syscall.Getppid() == 1 {
+		// We're running under init, which may be systemd.
+		f, err := NewJournaldFormatter()
+		if err == nil {
+			return f
+		}
+	}
+	return NewPrettyFormatter(out, false)
+}

vendor/github.com/coreos/pkg/capnslog/init_windows.go

@@ -0,0 +1,25 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package capnslog
+
+import "os"
+
+func init() {
+	initHijack()
+
+	// Go `log` package uses os.Stderr.
+	SetFormatter(NewPrettyFormatter(os.Stderr, false))
+	SetGlobalLogLevel(INFO)
+}

vendor/github.com/coreos/pkg/capnslog/journald_formatter.go

@@ -0,0 +1,68 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// +build !windows
+
+package capnslog
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/coreos/go-systemd/journal"
+)
+
+func NewJournaldFormatter() (Formatter, error) {
+	if !journal.Enabled() {
+		return nil, errors.New("No systemd detected")
+	}
+	return &journaldFormatter{}, nil
+}
+
+type journaldFormatter struct{}
+
+func (j *journaldFormatter) Format(pkg string, l LogLevel, _ int, entries ...interface{}) {
+	var pri journal.Priority
+	switch l {
+	case CRITICAL:
+		pri = journal.PriCrit
+	case ERROR:
+		pri = journal.PriErr
+	case WARNING:
+		pri = journal.PriWarning
+	case NOTICE:
+		pri = journal.PriNotice
+	case INFO:
+		pri = journal.PriInfo
+	case DEBUG:
+		pri = journal.PriDebug
+	case TRACE:
+		pri = journal.PriDebug
+	default:
+		panic("Unhandled loglevel")
+	}
+	msg := fmt.Sprint(entries...)
+	tags := map[string]string{
+		"PACKAGE":           pkg,
+		"SYSLOG_IDENTIFIER": filepath.Base(os.Args[0]),
+	}
+	err := journal.Send(msg, pri, tags)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+	}
+}
+
+func (j *journaldFormatter) Flush() {}

vendor/github.com/coreos/pkg/capnslog/log_hijack.go

@@ -0,0 +1,39 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package capnslog
+
+import (
+	"log"
+)
+
+func initHijack() {
+	pkg := NewPackageLogger("log", "")
+	w := packageWriter{pkg}
+	log.SetFlags(0)
+	log.SetPrefix("")
+	log.SetOutput(w)
+}
+
+type packageWriter struct {
+	pl *PackageLogger
+}
+
+func (p packageWriter) Write(b []byte) (int, error) {
+	if p.pl.level < INFO {
+		return 0, nil
+	}
+	p.pl.internalLog(calldepth+2, INFO, string(b))
+	return len(b), nil
+}

vendor/github.com/coreos/pkg/capnslog/logmap.go

@@ -0,0 +1,245 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package capnslog
+
+import (
+	"errors"
+	"strings"
+	"sync"
+)
+
+// LogLevel is the set of all log levels.
+type LogLevel int8
+
+const (
+	// CRITICAL is the lowest log level; only errors which will end the program will be propagated.
+	CRITICAL LogLevel = iota - 1
+	// ERROR is for errors that are not fatal but lead to troubling behavior.
+	ERROR
+	// WARNING is for errors which are not fatal and not errors, but are unusual. Often sourced from misconfigurations.
+	WARNING
+	// NOTICE is for normal but significant conditions.
+	NOTICE
+	// INFO is a log level for common, everyday log updates.
+	INFO
+	// DEBUG is the default hidden level for more verbose updates about internal processes.
+	DEBUG
+	// TRACE is for (potentially) call by call tracing of programs.
+	TRACE
+)
+
+// Char returns a single-character representation of the log level.
+func (l LogLevel) Char() string {
+	switch l {
+	case CRITICAL:
+		return "C"
+	case ERROR:
+		return "E"
+	case WARNING:
+		return "W"
+	case NOTICE:
+		return "N"
+	case INFO:
+		return "I"
+	case DEBUG:
+		return "D"
+	case TRACE:
+		return "T"
+	default:
+		panic("Unhandled loglevel")
+	}
+}
+
+// String returns a multi-character representation of the log level.
+func (l LogLevel) String() string {
+	switch l {
+	case CRITICAL:
+		return "CRITICAL"
+	case ERROR:
+		return "ERROR"
+	case WARNING:
+		return "WARNING"
+	case NOTICE:
+		return "NOTICE"
+	case INFO:
+		return "INFO"
+	case DEBUG:
+		return "DEBUG"
+	case TRACE:
+		return "TRACE"
+	default:
+		panic("Unhandled loglevel")
+	}
+}
+
+// Update using the given string value. Fulfills the flag.Value interface.
+func (l *LogLevel) Set(s string) error {
+	value, err := ParseLevel(s)
+	if err != nil {
+		return err
+	}
+
+	*l = value
+	return nil
+}
+
+// Returns an empty string, only here to fulfill the pflag.Value interface.
+func (l *LogLevel) Type() string {
+	return ""
+}
+
+// ParseLevel translates some potential loglevel strings into their corresponding levels.
+func ParseLevel(s string) (LogLevel, error) {
+	switch s {
+	case "CRITICAL", "C":
+		return CRITICAL, nil
+	case "ERROR", "0", "E":
+		return ERROR, nil
+	case "WARNING", "1", "W":
+		return WARNING, nil
+	case "NOTICE", "2", "N":
+		return NOTICE, nil
+	case "INFO", "3", "I":
+		return INFO, nil
+	case "DEBUG", "4", "D":
+		return DEBUG, nil
+	case "TRACE", "5", "T":
+		return TRACE, nil
+	}
+	return CRITICAL, errors.New("couldn't parse log level " + s)
+}
+
+type RepoLogger map[string]*PackageLogger
+
+type loggerStruct struct {
+	sync.Mutex
+	repoMap   map[string]RepoLogger
+	formatter Formatter
+}
+
+// logger is the global logger
+var logger = new(loggerStruct)
+
+// SetGlobalLogLevel sets the log level for all packages in all repositories
+// registered with capnslog.
+func SetGlobalLogLevel(l LogLevel) {
+	logger.Lock()
+	defer logger.Unlock()
+	for _, r := range logger.repoMap {
+		r.setRepoLogLevelInternal(l)
+	}
+}
+
+// GetRepoLogger may return the handle to the repository's set of packages' loggers.
+func GetRepoLogger(repo string) (RepoLogger, error) {
+	logger.Lock()
+	defer logger.Unlock()
+	r, ok := logger.repoMap[repo]
+	if !ok {
+		return nil, errors.New("no packages registered for repo " + repo)
+	}
+	return r, nil
+}
+
+// MustRepoLogger returns the handle to the repository's packages' loggers.
+func MustRepoLogger(repo string) RepoLogger {
+	r, err := GetRepoLogger(repo)
+	if err != nil {
+		panic(err)
+	}
+	return r
+}
+
+// SetRepoLogLevel sets the log level for all packages in the repository.
+func (r RepoLogger) SetRepoLogLevel(l LogLevel) {
+	logger.Lock()
+	defer logger.Unlock()
+	r.setRepoLogLevelInternal(l)
+}
+
+func (r RepoLogger) setRepoLogLevelInternal(l LogLevel) {
+	for _, v := range r {
+		v.level = l
+	}
+}
+
+// ParseLogLevelConfig parses a comma-separated string of "package=loglevel", in
+// order, and returns a map of the results, for use in SetLogLevel.
+func (r RepoLogger) ParseLogLevelConfig(conf string) (map[string]LogLevel, error) {
+	setlist := strings.Split(conf, ",")
+	out := make(map[string]LogLevel)
+	for _, setstring := range setlist {
+		setting := strings.Split(setstring, "=")
+		if len(setting) != 2 {
+			return nil, errors.New("oddly structured `pkg=level` option: " + setstring)
+		}
+		l, err := ParseLevel(setting[1])
+		if err != nil {
+			return nil, err
+		}
+		out[setting[0]] = l
+	}
+	return out, nil
+}
+
+// SetLogLevel takes a map of package names within a repository to their desired
+// loglevel, and sets the levels appropriately. Unknown packages are ignored.
+// "*" is a special package name that corresponds to all packages, and will be
+// processed first.
+func (r RepoLogger) SetLogLevel(m map[string]LogLevel) {
+	logger.Lock()
+	defer logger.Unlock()
+	if l, ok := m["*"]; ok {
+		r.setRepoLogLevelInternal(l)
+	}
+	for k, v := range m {
+		l, ok := r[k]
+		if !ok {
+			continue
+		}
+		l.level = v
+	}
+}
+
+// SetFormatter sets the formatting function for all logs.
+func SetFormatter(f Formatter) {
+	logger.Lock()
+	defer logger.Unlock()
+	logger.formatter = f
+}
+
+// NewPackageLogger creates a package logger object.
+// This should be defined as a global var in your package, referencing your repo.
+func NewPackageLogger(repo string, pkg string) (p *PackageLogger) {
+	logger.Lock()
+	defer logger.Unlock()
+	if logger.repoMap == nil {
+		logger.repoMap = make(map[string]RepoLogger)
+	}
+	r, rok := logger.repoMap[repo]
+	if !rok {
+		logger.repoMap[repo] = make(RepoLogger)
+		r = logger.repoMap[repo]
+	}
+	p, pok := r[pkg]
+	if !pok {
+		r[pkg] = &PackageLogger{
+			pkg:   pkg,
+			level: INFO,
+		}
+		p = r[pkg]
+	}
+	return
+}

vendor/github.com/coreos/pkg/capnslog/pkg_logger.go

@@ -0,0 +1,191 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package capnslog
+
+import (
+	"fmt"
+	"os"
+)
+
+type PackageLogger struct {
+	pkg   string
+	level LogLevel
+}
+
+const calldepth = 2
+
+func (p *PackageLogger) internalLog(depth int, inLevel LogLevel, entries ...interface{}) {
+	logger.Lock()
+	defer logger.Unlock()
+	if inLevel != CRITICAL && p.level < inLevel {
+		return
+	}
+	if logger.formatter != nil {
+		logger.formatter.Format(p.pkg, inLevel, depth+1, entries...)
+	}
+}
+
+// SetLevel allows users to change the current logging level.
+func (p *PackageLogger) SetLevel(l LogLevel) {
+	logger.Lock()
+	defer logger.Unlock()
+	p.level = l
+}
+
+// LevelAt checks if the given log level will be outputted under current setting.
+func (p *PackageLogger) LevelAt(l LogLevel) bool {
+	logger.Lock()
+	defer logger.Unlock()
+	return p.level >= l
+}
+
+// Log a formatted string at any level between ERROR and TRACE
+func (p *PackageLogger) Logf(l LogLevel, format string, args ...interface{}) {
+	p.internalLog(calldepth, l, fmt.Sprintf(format, args...))
+}
+
+// Log a message at any level between ERROR and TRACE
+func (p *PackageLogger) Log(l LogLevel, args ...interface{}) {
+	p.internalLog(calldepth, l, fmt.Sprint(args...))
+}
+
+// log stdlib compatibility
+
+func (p *PackageLogger) Println(args ...interface{}) {
+	p.internalLog(calldepth, INFO, fmt.Sprintln(args...))
+}
+
+func (p *PackageLogger) Printf(format string, args ...interface{}) {
+	p.Logf(INFO, format, args...)
+}
+
+func (p *PackageLogger) Print(args ...interface{}) {
+	p.internalLog(calldepth, INFO, fmt.Sprint(args...))
+}
+
+// Panic and fatal
+
+func (p *PackageLogger) Panicf(format string, args ...interface{}) {
+	s := fmt.Sprintf(format, args...)
+	p.internalLog(calldepth, CRITICAL, s)
+	panic(s)
+}
+
+func (p *PackageLogger) Panic(args ...interface{}) {
+	s := fmt.Sprint(args...)
+	p.internalLog(calldepth, CRITICAL, s)
+	panic(s)
+}
+
+func (p *PackageLogger) Panicln(args ...interface{}) {
+	s := fmt.Sprintln(args...)
+	p.internalLog(calldepth, CRITICAL, s)
+	panic(s)
+}
+
+func (p *PackageLogger) Fatalf(format string, args ...interface{}) {
+	p.Logf(CRITICAL, format, args...)
+	os.Exit(1)
+}
+
+func (p *PackageLogger) Fatal(args ...interface{}) {
+	s := fmt.Sprint(args...)
+	p.internalLog(calldepth, CRITICAL, s)
+	os.Exit(1)
+}
+
+func (p *PackageLogger) Fatalln(args ...interface{}) {
+	s := fmt.Sprintln(args...)
+	p.internalLog(calldepth, CRITICAL, s)
+	os.Exit(1)
+}
+
+// Error Functions
+
+func (p *PackageLogger) Errorf(format string, args ...interface{}) {
+	p.Logf(ERROR, format, args...)
+}
+
+func (p *PackageLogger) Error(entries ...interface{}) {
+	p.internalLog(calldepth, ERROR, entries...)
+}
+
+// Warning Functions
+
+func (p *PackageLogger) Warningf(format string, args ...interface{}) {
+	p.Logf(WARNING, format, args...)
+}
+
+func (p *PackageLogger) Warning(entries ...interface{}) {
+	p.internalLog(calldepth, WARNING, entries...)
+}
+
+// Notice Functions
+
+func (p *PackageLogger) Noticef(format string, args ...interface{}) {
+	p.Logf(NOTICE, format, args...)
+}
+
+func (p *PackageLogger) Notice(entries ...interface{}) {
+	p.internalLog(calldepth, NOTICE, entries...)
+}
+
+// Info Functions
+
+func (p *PackageLogger) Infof(format string, args ...interface{}) {
+	p.Logf(INFO, format, args...)
+}
+
+func (p *PackageLogger) Info(entries ...interface{}) {
+	p.internalLog(calldepth, INFO, entries...)
+}
+
+// Debug Functions
+
+func (p *PackageLogger) Debugf(format string, args ...interface{}) {
+	if p.level < DEBUG {
+		return
+	}
+	p.Logf(DEBUG, format, args...)
+}
+
+func (p *PackageLogger) Debug(entries ...interface{}) {
+	if p.level < DEBUG {
+		return
+	}
+	p.internalLog(calldepth, DEBUG, entries...)
+}
+
+// Trace Functions
+
+func (p *PackageLogger) Tracef(format string, args ...interface{}) {
+	if p.level < TRACE {
+		return
+	}
+	p.Logf(TRACE, format, args...)
+}
+
+func (p *PackageLogger) Trace(entries ...interface{}) {
+	if p.level < TRACE {
+		return
+	}
+	p.internalLog(calldepth, TRACE, entries...)
+}
+
+func (p *PackageLogger) Flush() {
+	logger.Lock()
+	defer logger.Unlock()
+	logger.formatter.Flush()
+}

vendor/github.com/coreos/pkg/capnslog/syslog_formatter.go

@@ -0,0 +1,65 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// +build !windows
+
+package capnslog
+
+import (
+	"fmt"
+	"log/syslog"
+)
+
+func NewSyslogFormatter(w *syslog.Writer) Formatter {
+	return &syslogFormatter{w}
+}
+
+func NewDefaultSyslogFormatter(tag string) (Formatter, error) {
+	w, err := syslog.New(syslog.LOG_DEBUG, tag)
+	if err != nil {
+		return nil, err
+	}
+	return NewSyslogFormatter(w), nil
+}
+
+type syslogFormatter struct {
+	w *syslog.Writer
+}
+
+func (s *syslogFormatter) Format(pkg string, l LogLevel, _ int, entries ...interface{}) {
+	for _, entry := range entries {
+		str := fmt.Sprint(entry)
+		switch l {
+		case CRITICAL:
+			s.w.Crit(str)
+		case ERROR:
+			s.w.Err(str)
+		case WARNING:
+			s.w.Warning(str)
+		case NOTICE:
+			s.w.Notice(str)
+		case INFO:
+			s.w.Info(str)
+		case DEBUG:
+			s.w.Debug(str)
+		case TRACE:
+			s.w.Debug(str)
+		default:
+			panic("Unhandled loglevel")
+		}
+	}
+}
+
+func (s *syslogFormatter) Flush() {
+}

vendor/github.com/gogo/protobuf/gogoproto/Makefile

@@ -0,0 +1,37 @@
+# Protocol Buffers for Go with Gadgets
+#
+# Copyright (c) 2013, The GoGo Authors. All rights reserved.
+# http://github.com/gogo/protobuf
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+regenerate:
+	go install github.com/gogo/protobuf/protoc-gen-gogo
+	protoc --gogo_out=Mgoogle/protobuf/descriptor.proto=github.com/gogo/protobuf/protoc-gen-gogo/descriptor:../../../../ --proto_path=../../../../:../protobuf/:. *.proto
+
+restore:
+	cp gogo.pb.golden gogo.pb.go
+
+preserve:
+	cp gogo.pb.go gogo.pb.golden

vendor/github.com/gogo/protobuf/gogoproto/doc.go

@@ -0,0 +1,169 @@
+// Protocol Buffers for Go with Gadgets
+//
+// Copyright (c) 2013, The GoGo Authors. All rights reserved.
+// http://github.com/gogo/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+/*
+Package gogoproto provides extensions for protocol buffers to achieve:
+
+  - fast marshalling and unmarshalling.
+  - peace of mind by optionally generating test and benchmark code.
+  - more canonical Go structures.
+  - less typing by optionally generating extra helper code.
+  - goprotobuf compatibility
+
+More Canonical Go Structures
+
+A lot of time working with a goprotobuf struct will lead you to a place where you create another struct that is easier to work with and then have a function to copy the values between the two structs.
+You might also find that basic structs that started their life as part of an API need to be sent over the wire. With gob, you could just send it. With goprotobuf, you need to make a parallel struct.
+Gogoprotobuf tries to fix these problems with the nullable, embed, customtype and customname field extensions.
+
+  - nullable, if false, a field is generated without a pointer (see warning below).
+  - embed, if true, the field is generated as an embedded field.
+  - customtype, It works with the Marshal and Unmarshal methods, to allow you to have your own types in your struct, but marshal to bytes. For example, custom.Uuid or custom.Fixed128
+  - customname (beta), Changes the generated fieldname. This is especially useful when generated methods conflict with fieldnames.
+  - casttype (beta), Changes the generated fieldtype.  All generated code assumes that this type is castable to the protocol buffer field type.  It does not work for structs or enums.
+  - castkey (beta), Changes the generated fieldtype for a map key.  All generated code assumes that this type is castable to the protocol buffer field type.  Only supported on maps.
+  - castvalue (beta), Changes the generated fieldtype for a map value.  All generated code assumes that this type is castable to the protocol buffer field type.  Only supported on maps.
+
+Warning about nullable: According to the Protocol Buffer specification, you should be able to tell whether a field is set or unset. With the option nullable=false this feature is lost, since your non-nullable fields will always be set. It can be seen as a layer on top of Protocol Buffers, where before and after marshalling all non-nullable fields are set and they cannot be unset.
+
+Let us look at:
+
+	github.com/gogo/protobuf/test/example/example.proto
+
+for a quicker overview.
+
+The following message:
+
+  package test;
+
+  import "github.com/gogo/protobuf/gogoproto/gogo.proto";
+
+	message A {
+		optional string Description = 1 [(gogoproto.nullable) = false];
+		optional int64 Number = 2 [(gogoproto.nullable) = false];
+		optional bytes Id = 3 [(gogoproto.customtype) = "github.com/gogo/protobuf/test/custom.Uuid", (gogoproto.nullable) = false];
+	}
+
+Will generate a go struct which looks a lot like this:
+
+	type A struct {
+		Description string
+		Number      int64
+		Id          github_com_gogo_protobuf_test_custom.Uuid
+	}
+
+You will see there are no pointers, since all fields are non-nullable.
+You will also see a custom type which marshals to a string.
+Be warned it is your responsibility to test your custom types thoroughly.
+You should think of every possible empty and nil case for your marshaling, unmarshaling and size methods.
+
+Next we will embed the message A in message B.
+
+	message B {
+		optional A A = 1 [(gogoproto.nullable) = false, (gogoproto.embed) = true];
+		repeated bytes G = 2 [(gogoproto.customtype) = "github.com/gogo/protobuf/test/custom.Uint128", (gogoproto.nullable) = false];
+	}
+
+See below that A is embedded in B.
+
+	type B struct {
+		A
+		G []github_com_gogo_protobuf_test_custom.Uint128
+	}
+
+Also see the repeated custom type.
+
+	type Uint128 [2]uint64
+
+Next we will create a custom name for one of our fields.
+
+	message C {
+		optional int64 size = 1 [(gogoproto.customname) = "MySize"];
+	}
+
+See below that the field's name is MySize and not Size.
+
+	type C struct {
+		MySize		*int64
+	}
+
+The is useful when having a protocol buffer message with a field name which conflicts with a generated method.
+As an example, having a field name size and using the sizer plugin to generate a Size method will cause a go compiler error.
+Using customname you can fix this error without changing the field name.
+This is typically useful when working with a protocol buffer that was designed before these methods and/or the go language were avialable.
+
+Gogoprotobuf also has some more subtle changes, these could be changed back:
+
+  - the generated package name for imports do not have the extra /filename.pb,
+  but are actually the imports specified in the .proto file.
+
+Gogoprotobuf also has lost some features which should be brought back with time:
+
+  - Marshalling and unmarshalling with reflect and without the unsafe package,
+  this requires work in pointer_reflect.go
+
+Why does nullable break protocol buffer specifications:
+
+The protocol buffer specification states, somewhere, that you should be able to tell whether a
+field is set or unset.  With the option nullable=false this feature is lost,
+since your non-nullable fields will always be set.  It can be seen as a layer on top of
+protocol buffers, where before and after marshalling all non-nullable fields are set
+and they cannot be unset.
+
+Goprotobuf Compatibility:
+
+Gogoprotobuf is compatible with Goprotobuf, because it is compatible with protocol buffers.
+Gogoprotobuf generates the same code as goprotobuf if no extensions are used.
+The enumprefix, getters and stringer extensions can be used to remove some of the unnecessary code generated by goprotobuf:
+
+  - gogoproto_import, if false, the generated code imports github.com/golang/protobuf/proto instead of github.com/gogo/protobuf/proto.
+  - goproto_enum_prefix, if false, generates the enum constant names without the messagetype prefix
+  - goproto_enum_stringer (experimental), if false, the enum is generated without the default string method, this is useful for rather using enum_stringer, or allowing you to write your own string method.
+  - goproto_getters, if false, the message is generated without get methods, this is useful when you would rather want to use face
+  - goproto_stringer, if false, the message is generated without the default string method, this is useful for rather using stringer, or allowing you to write your own string method.
+  - goproto_extensions_map (beta), if false, the extensions field is generated as type []byte instead of type map[int32]proto.Extension
+  - goproto_unrecognized (beta), if false, XXX_unrecognized field is not generated. This is useful in conjunction with gogoproto.nullable=false, to generate structures completely devoid of pointers and reduce GC pressure at the cost of losing information about unrecognized fields.
+  - goproto_registration (beta), if true, the generated files will register all messages and types against both gogo/protobuf and golang/protobuf. This is necessary when using third-party packages which read registrations from golang/protobuf (such as the grpc-gateway).
+
+Less Typing and Peace of Mind is explained in their specific plugin folders godoc:
+
+	- github.com/gogo/protobuf/plugin/<extension_name>
+
+If you do not use any of these extension the code that is generated
+will be the same as if goprotobuf has generated it.
+
+The most complete way to see examples is to look at
+
+	github.com/gogo/protobuf/test/thetest.proto
+
+Gogoprototest is a seperate project,
+because we want to keep gogoprotobuf independent of goprotobuf,
+but we still want to test it thoroughly.
+
+*/
+package gogoproto

vendor/github.com/gogo/protobuf/gogoproto/gogo.pb.go

@@ -0,0 +1,874 @@
+// Code generated by protoc-gen-gogo. DO NOT EDIT.
+// source: gogo.proto
+
+package gogoproto
+
+import (
+	fmt "fmt"
+	proto "github.com/gogo/protobuf/proto"
+	descriptor "github.com/gogo/protobuf/protoc-gen-gogo/descriptor"
+	math "math"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.GoGoProtoPackageIsVersion3 // please upgrade the proto package
+
+var E_GoprotoEnumPrefix = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.EnumOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         62001,
+	Name:          "gogoproto.goproto_enum_prefix",
+	Tag:           "varint,62001,opt,name=goproto_enum_prefix",
+	Filename:      "gogo.proto",
+}
+
+var E_GoprotoEnumStringer = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.EnumOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         62021,
+	Name:          "gogoproto.goproto_enum_stringer",
+	Tag:           "varint,62021,opt,name=goproto_enum_stringer",
+	Filename:      "gogo.proto",
+}
+
+var E_EnumStringer = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.EnumOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         62022,
+	Name:          "gogoproto.enum_stringer",
+	Tag:           "varint,62022,opt,name=enum_stringer",
+	Filename:      "gogo.proto",
+}
+
+var E_EnumCustomname = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.EnumOptions)(nil),
+	ExtensionType: (*string)(nil),
+	Field:         62023,
+	Name:          "gogoproto.enum_customname",
+	Tag:           "bytes,62023,opt,name=enum_customname",
+	Filename:      "gogo.proto",
+}
+
+var E_Enumdecl = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.EnumOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         62024,
+	Name:          "gogoproto.enumdecl",
+	Tag:           "varint,62024,opt,name=enumdecl",
+	Filename:      "gogo.proto",
+}
+
+var E_EnumvalueCustomname = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.EnumValueOptions)(nil),
+	ExtensionType: (*string)(nil),
+	Field:         66001,
+	Name:          "gogoproto.enumvalue_customname",
+	Tag:           "bytes,66001,opt,name=enumvalue_customname",
+	Filename:      "gogo.proto",
+}
+
+var E_GoprotoGettersAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63001,
+	Name:          "gogoproto.goproto_getters_all",
+	Tag:           "varint,63001,opt,name=goproto_getters_all",
+	Filename:      "gogo.proto",
+}
+
+var E_GoprotoEnumPrefixAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63002,
+	Name:          "gogoproto.goproto_enum_prefix_all",
+	Tag:           "varint,63002,opt,name=goproto_enum_prefix_all",
+	Filename:      "gogo.proto",
+}
+
+var E_GoprotoStringerAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63003,
+	Name:          "gogoproto.goproto_stringer_all",
+	Tag:           "varint,63003,opt,name=goproto_stringer_all",
+	Filename:      "gogo.proto",
+}
+
+var E_VerboseEqualAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63004,
+	Name:          "gogoproto.verbose_equal_all",
+	Tag:           "varint,63004,opt,name=verbose_equal_all",
+	Filename:      "gogo.proto",
+}
+
+var E_FaceAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63005,
+	Name:          "gogoproto.face_all",
+	Tag:           "varint,63005,opt,name=face_all",
+	Filename:      "gogo.proto",
+}
+
+var E_GostringAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63006,
+	Name:          "gogoproto.gostring_all",
+	Tag:           "varint,63006,opt,name=gostring_all",
+	Filename:      "gogo.proto",
+}
+
+var E_PopulateAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63007,
+	Name:          "gogoproto.populate_all",
+	Tag:           "varint,63007,opt,name=populate_all",
+	Filename:      "gogo.proto",
+}
+
+var E_StringerAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63008,
+	Name:          "gogoproto.stringer_all",
+	Tag:           "varint,63008,opt,name=stringer_all",
+	Filename:      "gogo.proto",
+}
+
+var E_OnlyoneAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63009,
+	Name:          "gogoproto.onlyone_all",
+	Tag:           "varint,63009,opt,name=onlyone_all",
+	Filename:      "gogo.proto",
+}
+
+var E_EqualAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63013,
+	Name:          "gogoproto.equal_all",
+	Tag:           "varint,63013,opt,name=equal_all",
+	Filename:      "gogo.proto",
+}
+
+var E_DescriptionAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63014,
+	Name:          "gogoproto.description_all",
+	Tag:           "varint,63014,opt,name=description_all",
+	Filename:      "gogo.proto",
+}
+
+var E_TestgenAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63015,
+	Name:          "gogoproto.testgen_all",
+	Tag:           "varint,63015,opt,name=testgen_all",
+	Filename:      "gogo.proto",
+}
+
+var E_BenchgenAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63016,
+	Name:          "gogoproto.benchgen_all",
+	Tag:           "varint,63016,opt,name=benchgen_all",
+	Filename:      "gogo.proto",
+}
+
+var E_MarshalerAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63017,
+	Name:          "gogoproto.marshaler_all",
+	Tag:           "varint,63017,opt,name=marshaler_all",
+	Filename:      "gogo.proto",
+}
+
+var E_UnmarshalerAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63018,
+	Name:          "gogoproto.unmarshaler_all",
+	Tag:           "varint,63018,opt,name=unmarshaler_all",
+	Filename:      "gogo.proto",
+}
+
+var E_StableMarshalerAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63019,
+	Name:          "gogoproto.stable_marshaler_all",
+	Tag:           "varint,63019,opt,name=stable_marshaler_all",
+	Filename:      "gogo.proto",
+}
+
+var E_SizerAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63020,
+	Name:          "gogoproto.sizer_all",
+	Tag:           "varint,63020,opt,name=sizer_all",
+	Filename:      "gogo.proto",
+}
+
+var E_GoprotoEnumStringerAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63021,
+	Name:          "gogoproto.goproto_enum_stringer_all",
+	Tag:           "varint,63021,opt,name=goproto_enum_stringer_all",
+	Filename:      "gogo.proto",
+}
+
+var E_EnumStringerAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63022,
+	Name:          "gogoproto.enum_stringer_all",
+	Tag:           "varint,63022,opt,name=enum_stringer_all",
+	Filename:      "gogo.proto",
+}
+
+var E_UnsafeMarshalerAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63023,
+	Name:          "gogoproto.unsafe_marshaler_all",
+	Tag:           "varint,63023,opt,name=unsafe_marshaler_all",
+	Filename:      "gogo.proto",
+}
+
+var E_UnsafeUnmarshalerAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63024,
+	Name:          "gogoproto.unsafe_unmarshaler_all",
+	Tag:           "varint,63024,opt,name=unsafe_unmarshaler_all",
+	Filename:      "gogo.proto",
+}
+
+var E_GoprotoExtensionsMapAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63025,
+	Name:          "gogoproto.goproto_extensions_map_all",
+	Tag:           "varint,63025,opt,name=goproto_extensions_map_all",
+	Filename:      "gogo.proto",
+}
+
+var E_GoprotoUnrecognizedAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63026,
+	Name:          "gogoproto.goproto_unrecognized_all",
+	Tag:           "varint,63026,opt,name=goproto_unrecognized_all",
+	Filename:      "gogo.proto",
+}
+
+var E_GogoprotoImport = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63027,
+	Name:          "gogoproto.gogoproto_import",
+	Tag:           "varint,63027,opt,name=gogoproto_import",
+	Filename:      "gogo.proto",
+}
+
+var E_ProtosizerAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63028,
+	Name:          "gogoproto.protosizer_all",
+	Tag:           "varint,63028,opt,name=protosizer_all",
+	Filename:      "gogo.proto",
+}
+
+var E_CompareAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63029,
+	Name:          "gogoproto.compare_all",
+	Tag:           "varint,63029,opt,name=compare_all",
+	Filename:      "gogo.proto",
+}
+
+var E_TypedeclAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63030,
+	Name:          "gogoproto.typedecl_all",
+	Tag:           "varint,63030,opt,name=typedecl_all",
+	Filename:      "gogo.proto",
+}
+
+var E_EnumdeclAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63031,
+	Name:          "gogoproto.enumdecl_all",
+	Tag:           "varint,63031,opt,name=enumdecl_all",
+	Filename:      "gogo.proto",
+}
+
+var E_GoprotoRegistration = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63032,
+	Name:          "gogoproto.goproto_registration",
+	Tag:           "varint,63032,opt,name=goproto_registration",
+	Filename:      "gogo.proto",
+}
+
+var E_MessagenameAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63033,
+	Name:          "gogoproto.messagename_all",
+	Tag:           "varint,63033,opt,name=messagename_all",
+	Filename:      "gogo.proto",
+}
+
+var E_GoprotoSizecacheAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63034,
+	Name:          "gogoproto.goproto_sizecache_all",
+	Tag:           "varint,63034,opt,name=goproto_sizecache_all",
+	Filename:      "gogo.proto",
+}
+
+var E_GoprotoUnkeyedAll = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FileOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         63035,
+	Name:          "gogoproto.goproto_unkeyed_all",
+	Tag:           "varint,63035,opt,name=goproto_unkeyed_all",
+	Filename:      "gogo.proto",
+}
+
+var E_GoprotoGetters = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64001,
+	Name:          "gogoproto.goproto_getters",
+	Tag:           "varint,64001,opt,name=goproto_getters",
+	Filename:      "gogo.proto",
+}
+
+var E_GoprotoStringer = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64003,
+	Name:          "gogoproto.goproto_stringer",
+	Tag:           "varint,64003,opt,name=goproto_stringer",
+	Filename:      "gogo.proto",
+}
+
+var E_VerboseEqual = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64004,
+	Name:          "gogoproto.verbose_equal",
+	Tag:           "varint,64004,opt,name=verbose_equal",
+	Filename:      "gogo.proto",
+}
+
+var E_Face = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64005,
+	Name:          "gogoproto.face",
+	Tag:           "varint,64005,opt,name=face",
+	Filename:      "gogo.proto",
+}
+
+var E_Gostring = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64006,
+	Name:          "gogoproto.gostring",
+	Tag:           "varint,64006,opt,name=gostring",
+	Filename:      "gogo.proto",
+}
+
+var E_Populate = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64007,
+	Name:          "gogoproto.populate",
+	Tag:           "varint,64007,opt,name=populate",
+	Filename:      "gogo.proto",
+}
+
+var E_Stringer = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         67008,
+	Name:          "gogoproto.stringer",
+	Tag:           "varint,67008,opt,name=stringer",
+	Filename:      "gogo.proto",
+}
+
+var E_Onlyone = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64009,
+	Name:          "gogoproto.onlyone",
+	Tag:           "varint,64009,opt,name=onlyone",
+	Filename:      "gogo.proto",
+}
+
+var E_Equal = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64013,
+	Name:          "gogoproto.equal",
+	Tag:           "varint,64013,opt,name=equal",
+	Filename:      "gogo.proto",
+}
+
+var E_Description = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64014,
+	Name:          "gogoproto.description",
+	Tag:           "varint,64014,opt,name=description",
+	Filename:      "gogo.proto",
+}
+
+var E_Testgen = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64015,
+	Name:          "gogoproto.testgen",
+	Tag:           "varint,64015,opt,name=testgen",
+	Filename:      "gogo.proto",
+}
+
+var E_Benchgen = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64016,
+	Name:          "gogoproto.benchgen",
+	Tag:           "varint,64016,opt,name=benchgen",
+	Filename:      "gogo.proto",
+}
+
+var E_Marshaler = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64017,
+	Name:          "gogoproto.marshaler",
+	Tag:           "varint,64017,opt,name=marshaler",
+	Filename:      "gogo.proto",
+}
+
+var E_Unmarshaler = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64018,
+	Name:          "gogoproto.unmarshaler",
+	Tag:           "varint,64018,opt,name=unmarshaler",
+	Filename:      "gogo.proto",
+}
+
+var E_StableMarshaler = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64019,
+	Name:          "gogoproto.stable_marshaler",
+	Tag:           "varint,64019,opt,name=stable_marshaler",
+	Filename:      "gogo.proto",
+}
+
+var E_Sizer = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64020,
+	Name:          "gogoproto.sizer",
+	Tag:           "varint,64020,opt,name=sizer",
+	Filename:      "gogo.proto",
+}
+
+var E_UnsafeMarshaler = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64023,
+	Name:          "gogoproto.unsafe_marshaler",
+	Tag:           "varint,64023,opt,name=unsafe_marshaler",
+	Filename:      "gogo.proto",
+}
+
+var E_UnsafeUnmarshaler = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64024,
+	Name:          "gogoproto.unsafe_unmarshaler",
+	Tag:           "varint,64024,opt,name=unsafe_unmarshaler",
+	Filename:      "gogo.proto",
+}
+
+var E_GoprotoExtensionsMap = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64025,
+	Name:          "gogoproto.goproto_extensions_map",
+	Tag:           "varint,64025,opt,name=goproto_extensions_map",
+	Filename:      "gogo.proto",
+}
+
+var E_GoprotoUnrecognized = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64026,
+	Name:          "gogoproto.goproto_unrecognized",
+	Tag:           "varint,64026,opt,name=goproto_unrecognized",
+	Filename:      "gogo.proto",
+}
+
+var E_Protosizer = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64028,
+	Name:          "gogoproto.protosizer",
+	Tag:           "varint,64028,opt,name=protosizer",
+	Filename:      "gogo.proto",
+}
+
+var E_Compare = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64029,
+	Name:          "gogoproto.compare",
+	Tag:           "varint,64029,opt,name=compare",
+	Filename:      "gogo.proto",
+}
+
+var E_Typedecl = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64030,
+	Name:          "gogoproto.typedecl",
+	Tag:           "varint,64030,opt,name=typedecl",
+	Filename:      "gogo.proto",
+}
+
+var E_Messagename = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64033,
+	Name:          "gogoproto.messagename",
+	Tag:           "varint,64033,opt,name=messagename",
+	Filename:      "gogo.proto",
+}
+
+var E_GoprotoSizecache = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64034,
+	Name:          "gogoproto.goproto_sizecache",
+	Tag:           "varint,64034,opt,name=goproto_sizecache",
+	Filename:      "gogo.proto",
+}
+
+var E_GoprotoUnkeyed = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.MessageOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         64035,
+	Name:          "gogoproto.goproto_unkeyed",
+	Tag:           "varint,64035,opt,name=goproto_unkeyed",
+	Filename:      "gogo.proto",
+}
+
+var E_Nullable = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FieldOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         65001,
+	Name:          "gogoproto.nullable",
+	Tag:           "varint,65001,opt,name=nullable",
+	Filename:      "gogo.proto",
+}
+
+var E_Embed = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FieldOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         65002,
+	Name:          "gogoproto.embed",
+	Tag:           "varint,65002,opt,name=embed",
+	Filename:      "gogo.proto",
+}
+
+var E_Customtype = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FieldOptions)(nil),
+	ExtensionType: (*string)(nil),
+	Field:         65003,
+	Name:          "gogoproto.customtype",
+	Tag:           "bytes,65003,opt,name=customtype",
+	Filename:      "gogo.proto",
+}
+
+var E_Customname = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FieldOptions)(nil),
+	ExtensionType: (*string)(nil),
+	Field:         65004,
+	Name:          "gogoproto.customname",
+	Tag:           "bytes,65004,opt,name=customname",
+	Filename:      "gogo.proto",
+}
+
+var E_Jsontag = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FieldOptions)(nil),
+	ExtensionType: (*string)(nil),
+	Field:         65005,
+	Name:          "gogoproto.jsontag",
+	Tag:           "bytes,65005,opt,name=jsontag",
+	Filename:      "gogo.proto",
+}
+
+var E_Moretags = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FieldOptions)(nil),
+	ExtensionType: (*string)(nil),
+	Field:         65006,
+	Name:          "gogoproto.moretags",
+	Tag:           "bytes,65006,opt,name=moretags",
+	Filename:      "gogo.proto",
+}
+
+var E_Casttype = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FieldOptions)(nil),
+	ExtensionType: (*string)(nil),
+	Field:         65007,
+	Name:          "gogoproto.casttype",
+	Tag:           "bytes,65007,opt,name=casttype",
+	Filename:      "gogo.proto",
+}
+
+var E_Castkey = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FieldOptions)(nil),
+	ExtensionType: (*string)(nil),
+	Field:         65008,
+	Name:          "gogoproto.castkey",
+	Tag:           "bytes,65008,opt,name=castkey",
+	Filename:      "gogo.proto",
+}
+
+var E_Castvalue = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FieldOptions)(nil),
+	ExtensionType: (*string)(nil),
+	Field:         65009,
+	Name:          "gogoproto.castvalue",
+	Tag:           "bytes,65009,opt,name=castvalue",
+	Filename:      "gogo.proto",
+}
+
+var E_Stdtime = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FieldOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         65010,
+	Name:          "gogoproto.stdtime",
+	Tag:           "varint,65010,opt,name=stdtime",
+	Filename:      "gogo.proto",
+}
+
+var E_Stdduration = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FieldOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         65011,
+	Name:          "gogoproto.stdduration",
+	Tag:           "varint,65011,opt,name=stdduration",
+	Filename:      "gogo.proto",
+}
+
+var E_Wktpointer = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FieldOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         65012,
+	Name:          "gogoproto.wktpointer",
+	Tag:           "varint,65012,opt,name=wktpointer",
+	Filename:      "gogo.proto",
+}
+
+func init() {
+	proto.RegisterExtension(E_GoprotoEnumPrefix)
+	proto.RegisterExtension(E_GoprotoEnumStringer)
+	proto.RegisterExtension(E_EnumStringer)
+	proto.RegisterExtension(E_EnumCustomname)
+	proto.RegisterExtension(E_Enumdecl)
+	proto.RegisterExtension(E_EnumvalueCustomname)
+	proto.RegisterExtension(E_GoprotoGettersAll)
+	proto.RegisterExtension(E_GoprotoEnumPrefixAll)
+	proto.RegisterExtension(E_GoprotoStringerAll)
+	proto.RegisterExtension(E_VerboseEqualAll)
+	proto.RegisterExtension(E_FaceAll)
+	proto.RegisterExtension(E_GostringAll)
+	proto.RegisterExtension(E_PopulateAll)
+	proto.RegisterExtension(E_StringerAll)
+	proto.RegisterExtension(E_OnlyoneAll)
+	proto.RegisterExtension(E_EqualAll)
+	proto.RegisterExtension(E_DescriptionAll)
+	proto.RegisterExtension(E_TestgenAll)
+	proto.RegisterExtension(E_BenchgenAll)
+	proto.RegisterExtension(E_MarshalerAll)
+	proto.RegisterExtension(E_UnmarshalerAll)
+	proto.RegisterExtension(E_StableMarshalerAll)
+	proto.RegisterExtension(E_SizerAll)
+	proto.RegisterExtension(E_GoprotoEnumStringerAll)
+	proto.RegisterExtension(E_EnumStringerAll)
+	proto.RegisterExtension(E_UnsafeMarshalerAll)
+	proto.RegisterExtension(E_UnsafeUnmarshalerAll)
+	proto.RegisterExtension(E_GoprotoExtensionsMapAll)
+	proto.RegisterExtension(E_GoprotoUnrecognizedAll)
+	proto.RegisterExtension(E_GogoprotoImport)
+	proto.RegisterExtension(E_ProtosizerAll)
+	proto.RegisterExtension(E_CompareAll)
+	proto.RegisterExtension(E_TypedeclAll)
+	proto.RegisterExtension(E_EnumdeclAll)
+	proto.RegisterExtension(E_GoprotoRegistration)
+	proto.RegisterExtension(E_MessagenameAll)
+	proto.RegisterExtension(E_GoprotoSizecacheAll)
+	proto.RegisterExtension(E_GoprotoUnkeyedAll)
+	proto.RegisterExtension(E_GoprotoGetters)
+	proto.RegisterExtension(E_GoprotoStringer)
+	proto.RegisterExtension(E_VerboseEqual)
+	proto.RegisterExtension(E_Face)
+	proto.RegisterExtension(E_Gostring)
+	proto.RegisterExtension(E_Populate)
+	proto.RegisterExtension(E_Stringer)
+	proto.RegisterExtension(E_Onlyone)
+	proto.RegisterExtension(E_Equal)
+	proto.RegisterExtension(E_Description)
+	proto.RegisterExtension(E_Testgen)
+	proto.RegisterExtension(E_Benchgen)
+	proto.RegisterExtension(E_Marshaler)
+	proto.RegisterExtension(E_Unmarshaler)
+	proto.RegisterExtension(E_StableMarshaler)
+	proto.RegisterExtension(E_Sizer)
+	proto.RegisterExtension(E_UnsafeMarshaler)
+	proto.RegisterExtension(E_UnsafeUnmarshaler)
+	proto.RegisterExtension(E_GoprotoExtensionsMap)
+	proto.RegisterExtension(E_GoprotoUnrecognized)
+	proto.RegisterExtension(E_Protosizer)
+	proto.RegisterExtension(E_Compare)
+	proto.RegisterExtension(E_Typedecl)
+	proto.RegisterExtension(E_Messagename)
+	proto.RegisterExtension(E_GoprotoSizecache)
+	proto.RegisterExtension(E_GoprotoUnkeyed)
+	proto.RegisterExtension(E_Nullable)
+	proto.RegisterExtension(E_Embed)
+	proto.RegisterExtension(E_Customtype)
+	proto.RegisterExtension(E_Customname)
+	proto.RegisterExtension(E_Jsontag)
+	proto.RegisterExtension(E_Moretags)
+	proto.RegisterExtension(E_Casttype)
+	proto.RegisterExtension(E_Castkey)
+	proto.RegisterExtension(E_Castvalue)
+	proto.RegisterExtension(E_Stdtime)
+	proto.RegisterExtension(E_Stdduration)
+	proto.RegisterExtension(E_Wktpointer)
+}
+
+func init() { proto.RegisterFile("gogo.proto", fileDescriptor_592445b5231bc2b9) }
+
+var fileDescriptor_592445b5231bc2b9 = []byte{
+	// 1328 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x94, 0x98, 0x49, 0x6f, 0x1c, 0x45,
+	0x14, 0x80, 0x85, 0x48, 0x64, 0x4f, 0x79, 0x8b, 0xc7, 0xc6, 0x84, 0x08, 0x44, 0xe0, 0xc4, 0xc9,
+	0x3e, 0x45, 0x28, 0x65, 0x45, 0x96, 0x63, 0x39, 0x56, 0x10, 0x0e, 0xc6, 0x89, 0xc3, 0x76, 0x18,
+	0xf5, 0xf4, 0x94, 0xdb, 0x8d, 0xbb, 0xbb, 0x9a, 0xee, 0xea, 0x10, 0xe7, 0x86, 0xc2, 0x22, 0x84,
+	0xd8, 0x91, 0x20, 0x21, 0x09, 0x04, 0xc4, 0xbe, 0x86, 0x7d, 0xb9, 0x70, 0x61, 0xb9, 0xf2, 0x1f,
+	0xb8, 0x00, 0x66, 0xf7, 0xcd, 0x17, 0xf4, 0xba, 0xdf, 0xeb, 0xa9, 0x69, 0x8f, 0x54, 0x35, 0xb7,
+	0xf6, 0xb8, 0xbe, 0x6f, 0xaa, 0xdf, 0xeb, 0x7a, 0xef, 0x4d, 0x33, 0xe6, 0x49, 0x4f, 0x4e, 0xc6,
+	0x89, 0x54, 0xb2, 0x5e, 0x83, 0xeb, 0xfc, 0x72, 0xdf, 0x7e, 0x4f, 0x4a, 0x2f, 0x10, 0x53, 0xf9,
+	0x5f, 0xcd, 0x6c, 0x75, 0xaa, 0x25, 0x52, 0x37, 0xf1, 0x63, 0x25, 0x93, 0x62, 0x31, 0x3f, 0xc6,
+	0xc6, 0x70, 0x71, 0x43, 0x44, 0x59, 0xd8, 0x88, 0x13, 0xb1, 0xea, 0x9f, 0xae, 0x5f, 0x3f, 0x59,
+	0x90, 0x93, 0x44, 0x4e, 0xce, 0x47, 0x59, 0x78, 0x47, 0xac, 0x7c, 0x19, 0xa5, 0x7b, 0xaf, 0xfc,
+	0x72, 0xf5, 0xfe, 0xab, 0x6e, 0xe9, 0x5f, 0x1e, 0x45, 0x14, 0xfe, 0xb7, 0x94, 0x83, 0x7c, 0x99,
+	0x5d, 0xd3, 0xe1, 0x4b, 0x55, 0xe2, 0x47, 0x9e, 0x48, 0x0c, 0xc6, 0xef, 0xd1, 0x38, 0xa6, 0x19,
+	0x8f, 0x23, 0xca, 0xe7, 0xd8, 0x50, 0x2f, 0xae, 0x1f, 0xd0, 0x35, 0x28, 0x74, 0xc9, 0x02, 0x1b,
+	0xc9, 0x25, 0x6e, 0x96, 0x2a, 0x19, 0x46, 0x4e, 0x28, 0x0c, 0x9a, 0x1f, 0x73, 0x4d, 0x6d, 0x79,
+	0x18, 0xb0, 0xb9, 0x92, 0xe2, 0x9c, 0xf5, 0xc3, 0x27, 0x2d, 0xe1, 0x06, 0x06, 0xc3, 0x4f, 0xb8,
+	0x91, 0x72, 0x3d, 0x3f, 0xc9, 0xc6, 0xe1, 0xfa, 0x94, 0x13, 0x64, 0x42, 0xdf, 0xc9, 0x4d, 0x5d,
+	0x3d, 0x27, 0x61, 0x19, 0xc9, 0x7e, 0x3e, 0xbb, 0x2b, 0xdf, 0xce, 0x58, 0x29, 0xd0, 0xf6, 0xa4,
+	0x65, 0xd1, 0x13, 0x4a, 0x89, 0x24, 0x6d, 0x38, 0x41, 0xb7, 0xed, 0x1d, 0xf1, 0x83, 0xd2, 0x78,
+	0x6e, 0xb3, 0x33, 0x8b, 0x0b, 0x05, 0x39, 0x1b, 0x04, 0x7c, 0x85, 0x5d, 0xdb, 0xe5, 0xa9, 0xb0,
+	0x70, 0x9e, 0x47, 0xe7, 0xf8, 0x8e, 0x27, 0x03, 0xb4, 0x4b, 0x8c, 0x3e, 0x2f, 0x73, 0x69, 0xe1,
+	0x7c, 0x19, 0x9d, 0x75, 0x64, 0x29, 0xa5, 0x60, 0xbc, 0x8d, 0x8d, 0x9e, 0x12, 0x49, 0x53, 0xa6,
+	0xa2, 0x21, 0x1e, 0xc8, 0x9c, 0xc0, 0x42, 0x77, 0x01, 0x75, 0x23, 0x08, 0xce, 0x03, 0x07, 0xae,
+	0x83, 0xac, 0x7f, 0xd5, 0x71, 0x85, 0x85, 0xe2, 0x22, 0x2a, 0xfa, 0x60, 0x3d, 0xa0, 0xb3, 0x6c,
+	0xd0, 0x93, 0xc5, 0x2d, 0x59, 0xe0, 0x97, 0x10, 0x1f, 0x20, 0x06, 0x15, 0xb1, 0x8c, 0xb3, 0xc0,
+	0x51, 0x36, 0x3b, 0x78, 0x85, 0x14, 0xc4, 0xa0, 0xa2, 0x87, 0xb0, 0xbe, 0x4a, 0x8a, 0x54, 0x8b,
+	0xe7, 0x0c, 0x1b, 0x90, 0x51, 0xb0, 0x21, 0x23, 0x9b, 0x4d, 0x5c, 0x46, 0x03, 0x43, 0x04, 0x04,
+	0xd3, 0xac, 0x66, 0x9b, 0x88, 0x37, 0x36, 0xe9, 0x78, 0x50, 0x06, 0x16, 0xd8, 0x08, 0x15, 0x28,
+	0x5f, 0x46, 0x16, 0x8a, 0x37, 0x51, 0x31, 0xac, 0x61, 0x78, 0x1b, 0x4a, 0xa4, 0xca, 0x13, 0x36,
+	0x92, 0xb7, 0xe8, 0x36, 0x10, 0xc1, 0x50, 0x36, 0x45, 0xe4, 0xae, 0xd9, 0x19, 0xde, 0xa6, 0x50,
+	0x12, 0x03, 0x8a, 0x39, 0x36, 0x14, 0x3a, 0x49, 0xba, 0xe6, 0x04, 0x56, 0xe9, 0x78, 0x07, 0x1d,
+	0x83, 0x25, 0x84, 0x11, 0xc9, 0xa2, 0x5e, 0x34, 0xef, 0x52, 0x44, 0x34, 0x0c, 0x8f, 0x5e, 0xaa,
+	0x9c, 0x66, 0x20, 0x1a, 0xbd, 0xd8, 0xde, 0xa3, 0xa3, 0x57, 0xb0, 0x8b, 0xba, 0x71, 0x9a, 0xd5,
+	0x52, 0xff, 0x8c, 0x95, 0xe6, 0x7d, 0xca, 0x74, 0x0e, 0x00, 0x7c, 0x0f, 0xbb, 0xae, 0x6b, 0x9b,
+	0xb0, 0x90, 0x7d, 0x80, 0xb2, 0x89, 0x2e, 0xad, 0x02, 0x4b, 0x42, 0xaf, 0xca, 0x0f, 0xa9, 0x24,
+	0x88, 0x8a, 0x6b, 0x89, 0x8d, 0x67, 0x51, 0xea, 0xac, 0xf6, 0x16, 0xb5, 0x8f, 0x28, 0x6a, 0x05,
+	0xdb, 0x11, 0xb5, 0x13, 0x6c, 0x02, 0x8d, 0xbd, 0xe5, 0xf5, 0x63, 0x2a, 0xac, 0x05, 0xbd, 0xd2,
+	0x99, 0xdd, 0xfb, 0xd8, 0xbe, 0x32, 0x9c, 0xa7, 0x95, 0x88, 0x52, 0x60, 0x1a, 0xa1, 0x13, 0x5b,
+	0x98, 0xaf, 0xa0, 0x99, 0x2a, 0xfe, 0x7c, 0x29, 0x58, 0x74, 0x62, 0x90, 0xdf, 0xcd, 0xf6, 0x92,
+	0x3c, 0x8b, 0x12, 0xe1, 0x4a, 0x2f, 0xf2, 0xcf, 0x88, 0x96, 0x85, 0xfa, 0x93, 0x4a, 0xaa, 0x56,
+	0x34, 0x1c, 0xcc, 0x47, 0xd9, 0x9e, 0x72, 0x56, 0x69, 0xf8, 0x61, 0x2c, 0x13, 0x65, 0x30, 0x7e,
+	0x4a, 0x99, 0x2a, 0xb9, 0xa3, 0x39, 0xc6, 0xe7, 0xd9, 0x70, 0xfe, 0xa7, 0xed, 0x23, 0xf9, 0x19,
+	0x8a, 0x86, 0xda, 0x14, 0x16, 0x0e, 0x57, 0x86, 0xb1, 0x93, 0xd8, 0xd4, 0xbf, 0xcf, 0xa9, 0x70,
+	0x20, 0x82, 0x85, 0x43, 0x6d, 0xc4, 0x02, 0xba, 0xbd, 0x85, 0xe1, 0x0b, 0x2a, 0x1c, 0xc4, 0xa0,
+	0x82, 0x06, 0x06, 0x0b, 0xc5, 0x97, 0xa4, 0x20, 0x06, 0x14, 0x77, 0xb6, 0x1b, 0x6d, 0x22, 0x3c,
+	0x3f, 0x55, 0x89, 0x03, 0xab, 0x0d, 0xaa, 0xaf, 0x36, 0x3b, 0x87, 0xb0, 0x65, 0x0d, 0x85, 0x4a,
+	0x14, 0x8a, 0x34, 0x75, 0x3c, 0x01, 0x13, 0x87, 0xc5, 0xc6, 0xbe, 0xa6, 0x4a, 0xa4, 0x61, 0xb0,
+	0x37, 0x6d, 0x42, 0x84, 0xb0, 0xbb, 0x8e, 0xbb, 0x66, 0xa3, 0xfb, 0xa6, 0xb2, 0xb9, 0xe3, 0xc4,
+	0x82, 0x53, 0x9b, 0x7f, 0xb2, 0x68, 0x5d, 0x6c, 0x58, 0x3d, 0x9d, 0xdf, 0x56, 0xe6, 0x9f, 0x95,
+	0x82, 0x2c, 0x6a, 0xc8, 0x48, 0x65, 0x9e, 0xaa, 0xdf, 0xb8, 0xc3, 0xb5, 0x58, 0xdc, 0x17, 0xe9,
+	0x1e, 0xda, 0xc2, 0xfb, 0xed, 0x1c, 0xa7, 0xf8, 0xed, 0xf0, 0x90, 0x77, 0x0e, 0x3d, 0x66, 0xd9,
+	0xd9, 0xad, 0xf2, 0x39, 0xef, 0x98, 0x79, 0xf8, 0x11, 0x36, 0xd4, 0x31, 0xf0, 0x98, 0x55, 0x0f,
+	0xa3, 0x6a, 0x50, 0x9f, 0x77, 0xf8, 0x01, 0xb6, 0x0b, 0x86, 0x17, 0x33, 0xfe, 0x08, 0xe2, 0xf9,
+	0x72, 0x7e, 0x88, 0xf5, 0xd3, 0xd0, 0x62, 0x46, 0x1f, 0x45, 0xb4, 0x44, 0x00, 0xa7, 0x81, 0xc5,
+	0x8c, 0x3f, 0x46, 0x38, 0x21, 0x80, 0xdb, 0x87, 0xf0, 0xbb, 0x27, 0x76, 0x61, 0xd3, 0xa1, 0xd8,
+	0x4d, 0xb3, 0x3e, 0x9c, 0x54, 0xcc, 0xf4, 0xe3, 0xf8, 0xe5, 0x44, 0xf0, 0x5b, 0xd9, 0x6e, 0xcb,
+	0x80, 0x3f, 0x89, 0x68, 0xb1, 0x9e, 0xcf, 0xb1, 0x01, 0x6d, 0x3a, 0x31, 0xe3, 0x4f, 0x21, 0xae,
+	0x53, 0xb0, 0x75, 0x9c, 0x4e, 0xcc, 0x82, 0xa7, 0x69, 0xeb, 0x48, 0x40, 0xd8, 0x68, 0x30, 0x31,
+	0xd3, 0xcf, 0x50, 0xd4, 0x09, 0xe1, 0x33, 0xac, 0x56, 0x36, 0x1b, 0x33, 0xff, 0x2c, 0xf2, 0x6d,
+	0x06, 0x22, 0xa0, 0x35, 0x3b, 0xb3, 0xe2, 0x39, 0x8a, 0x80, 0x46, 0xc1, 0x31, 0xaa, 0x0e, 0x30,
+	0x66, 0xd3, 0xf3, 0x74, 0x8c, 0x2a, 0xf3, 0x0b, 0x64, 0x33, 0xaf, 0xf9, 0x66, 0xc5, 0x0b, 0x94,
+	0xcd, 0x7c, 0x3d, 0x6c, 0xa3, 0x3a, 0x11, 0x98, 0x1d, 0x2f, 0xd2, 0x36, 0x2a, 0x03, 0x01, 0x5f,
+	0x62, 0xf5, 0x9d, 0xd3, 0x80, 0xd9, 0xf7, 0x12, 0xfa, 0x46, 0x77, 0x0c, 0x03, 0xfc, 0x2e, 0x36,
+	0xd1, 0x7d, 0x12, 0x30, 0x5b, 0xcf, 0x6d, 0x55, 0x7e, 0xbb, 0xe9, 0x83, 0x00, 0x3f, 0xd1, 0x6e,
+	0x29, 0xfa, 0x14, 0x60, 0xd6, 0x9e, 0xdf, 0xea, 0x2c, 0xdc, 0xfa, 0x10, 0xc0, 0x67, 0x19, 0x6b,
+	0x37, 0x60, 0xb3, 0xeb, 0x02, 0xba, 0x34, 0x08, 0x8e, 0x06, 0xf6, 0x5f, 0x33, 0x7f, 0x91, 0x8e,
+	0x06, 0x12, 0x70, 0x34, 0xa8, 0xf5, 0x9a, 0xe9, 0x4b, 0x74, 0x34, 0x08, 0x81, 0x27, 0x5b, 0xeb,
+	0x6e, 0x66, 0xc3, 0x65, 0x7a, 0xb2, 0x35, 0x8a, 0x1f, 0x63, 0xa3, 0x3b, 0x1a, 0xa2, 0x59, 0xf5,
+	0x1a, 0xaa, 0xf6, 0x54, 0xfb, 0xa1, 0xde, 0xbc, 0xb0, 0x19, 0x9a, 0x6d, 0xaf, 0x57, 0x9a, 0x17,
+	0xf6, 0x42, 0x3e, 0xcd, 0xfa, 0xa3, 0x2c, 0x08, 0xe0, 0xf0, 0xd4, 0x6f, 0xe8, 0xd2, 0x4d, 0x45,
+	0xd0, 0x22, 0xc5, 0xaf, 0xdb, 0x18, 0x1d, 0x02, 0xf8, 0x01, 0xb6, 0x5b, 0x84, 0x4d, 0xd1, 0x32,
+	0x91, 0xbf, 0x6d, 0x53, 0xc1, 0x84, 0xd5, 0x7c, 0x86, 0xb1, 0xe2, 0xd5, 0x08, 0x84, 0xd9, 0xc4,
+	0xfe, 0xbe, 0x5d, 0xbc, 0xa5, 0xd1, 0x90, 0xb6, 0x20, 0x4f, 0x8a, 0x41, 0xb0, 0xd9, 0x29, 0xc8,
+	0x33, 0x72, 0x90, 0xf5, 0xdd, 0x9f, 0xca, 0x48, 0x39, 0x9e, 0x89, 0xfe, 0x03, 0x69, 0x5a, 0x0f,
+	0x01, 0x0b, 0x65, 0x22, 0x94, 0xe3, 0xa5, 0x26, 0xf6, 0x4f, 0x64, 0x4b, 0x00, 0x60, 0xd7, 0x49,
+	0x95, 0xcd, 0x7d, 0xff, 0x45, 0x30, 0x01, 0xb0, 0x69, 0xb8, 0x5e, 0x17, 0x1b, 0x26, 0xf6, 0x6f,
+	0xda, 0x34, 0xae, 0xe7, 0x87, 0x58, 0x0d, 0x2e, 0xf3, 0xb7, 0x4a, 0x26, 0xf8, 0x1f, 0x84, 0xdb,
+	0x04, 0x7c, 0x73, 0xaa, 0x5a, 0xca, 0x37, 0x07, 0xfb, 0x5f, 0xcc, 0x34, 0xad, 0xe7, 0xb3, 0x6c,
+	0x20, 0x55, 0xad, 0x56, 0x86, 0xf3, 0xa9, 0x01, 0xff, 0x6f, 0xbb, 0x7c, 0x65, 0x51, 0x32, 0x90,
+	0xed, 0x07, 0xd7, 0x55, 0x2c, 0xfd, 0x48, 0x89, 0xc4, 0x64, 0xd8, 0x42, 0x83, 0x86, 0x1c, 0x9e,
+	0x67, 0x63, 0xae, 0x0c, 0xab, 0xdc, 0x61, 0xb6, 0x20, 0x17, 0xe4, 0x52, 0x5e, 0x67, 0xee, 0xbd,
+	0xd9, 0xf3, 0xd5, 0x5a, 0xd6, 0x9c, 0x74, 0x65, 0x38, 0x05, 0xbf, 0x3c, 0xda, 0x2f, 0x54, 0xcb,
+	0xdf, 0x21, 0xff, 0x07, 0x00, 0x00, 0xff, 0xff, 0x9c, 0xaf, 0x70, 0x4e, 0x83, 0x15, 0x00, 0x00,
+}

vendor/github.com/gogo/protobuf/gogoproto/gogo.pb.golden

@@ -0,0 +1,45 @@
+// Code generated by protoc-gen-go.
+// source: gogo.proto
+// DO NOT EDIT!
+
+package gogoproto
+
+import proto "github.com/gogo/protobuf/proto"
+import json "encoding/json"
+import math "math"
+import google_protobuf "github.com/gogo/protobuf/protoc-gen-gogo/descriptor"
+
+// Reference proto, json, and math imports to suppress error if they are not otherwise used.
+var _ = proto.Marshal
+var _ = &json.SyntaxError{}
+var _ = math.Inf
+
+var E_Nullable = &proto.ExtensionDesc{
+	ExtendedType:  (*google_protobuf.FieldOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         51235,
+	Name:          "gogoproto.nullable",
+	Tag:           "varint,51235,opt,name=nullable",
+}
+
+var E_Embed = &proto.ExtensionDesc{
+	ExtendedType:  (*google_protobuf.FieldOptions)(nil),
+	ExtensionType: (*bool)(nil),
+	Field:         51236,
+	Name:          "gogoproto.embed",
+	Tag:           "varint,51236,opt,name=embed",
+}
+
+var E_Customtype = &proto.ExtensionDesc{
+	ExtendedType:  (*google_protobuf.FieldOptions)(nil),
+	ExtensionType: (*string)(nil),
+	Field:         51237,
+	Name:          "gogoproto.customtype",
+	Tag:           "bytes,51237,opt,name=customtype",
+}
+
+func init() {
+	proto.RegisterExtension(E_Nullable)
+	proto.RegisterExtension(E_Embed)
+	proto.RegisterExtension(E_Customtype)
+}

vendor/github.com/gogo/protobuf/gogoproto/gogo.proto

@@ -0,0 +1,144 @@
+// Protocol Buffers for Go with Gadgets
+//
+// Copyright (c) 2013, The GoGo Authors. All rights reserved.
+// http://github.com/gogo/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto2";
+package gogoproto;
+
+import "google/protobuf/descriptor.proto";
+
+option java_package = "com.google.protobuf";
+option java_outer_classname = "GoGoProtos";
+option go_package = "github.com/gogo/protobuf/gogoproto";
+
+extend google.protobuf.EnumOptions {
+	optional bool goproto_enum_prefix = 62001;
+	optional bool goproto_enum_stringer = 62021;
+	optional bool enum_stringer = 62022;
+	optional string enum_customname = 62023;
+	optional bool enumdecl = 62024;
+}
+
+extend google.protobuf.EnumValueOptions {
+	optional string enumvalue_customname = 66001;
+}
+
+extend google.protobuf.FileOptions {
+	optional bool goproto_getters_all = 63001;
+	optional bool goproto_enum_prefix_all = 63002;
+	optional bool goproto_stringer_all = 63003;
+	optional bool verbose_equal_all = 63004;
+	optional bool face_all = 63005;
+	optional bool gostring_all = 63006;
+	optional bool populate_all = 63007;
+	optional bool stringer_all = 63008;
+	optional bool onlyone_all = 63009;
+
+	optional bool equal_all = 63013;
+	optional bool description_all = 63014;
+	optional bool testgen_all = 63015;
+	optional bool benchgen_all = 63016;
+	optional bool marshaler_all = 63017;
+	optional bool unmarshaler_all = 63018;
+	optional bool stable_marshaler_all = 63019;
+
+	optional bool sizer_all = 63020;
+
+	optional bool goproto_enum_stringer_all = 63021;
+	optional bool enum_stringer_all = 63022;
+
+	optional bool unsafe_marshaler_all = 63023;
+	optional bool unsafe_unmarshaler_all = 63024;
+
+	optional bool goproto_extensions_map_all = 63025;
+	optional bool goproto_unrecognized_all = 63026;
+	optional bool gogoproto_import = 63027;
+	optional bool protosizer_all = 63028;
+	optional bool compare_all = 63029;
+    optional bool typedecl_all = 63030;
+    optional bool enumdecl_all = 63031;
+
+	optional bool goproto_registration = 63032;
+	optional bool messagename_all = 63033;
+
+	optional bool goproto_sizecache_all = 63034;
+	optional bool goproto_unkeyed_all = 63035;
+}
+
+extend google.protobuf.MessageOptions {
+	optional bool goproto_getters = 64001;
+	optional bool goproto_stringer = 64003;
+	optional bool verbose_equal = 64004;
+	optional bool face = 64005;
+	optional bool gostring = 64006;
+	optional bool populate = 64007;
+	optional bool stringer = 67008;
+	optional bool onlyone = 64009;
+
+	optional bool equal = 64013;
+	optional bool description = 64014;
+	optional bool testgen = 64015;
+	optional bool benchgen = 64016;
+	optional bool marshaler = 64017;
+	optional bool unmarshaler = 64018;
+	optional bool stable_marshaler = 64019;
+
+	optional bool sizer = 64020;
+
+	optional bool unsafe_marshaler = 64023;
+	optional bool unsafe_unmarshaler = 64024;
+
+	optional bool goproto_extensions_map = 64025;
+	optional bool goproto_unrecognized = 64026;
+
+	optional bool protosizer = 64028;
+	optional bool compare = 64029;
+
+	optional bool typedecl = 64030;
+
+	optional bool messagename = 64033;
+
+	optional bool goproto_sizecache = 64034;
+	optional bool goproto_unkeyed = 64035;
+}
+
+extend google.protobuf.FieldOptions {
+	optional bool nullable = 65001;
+	optional bool embed = 65002;
+	optional string customtype = 65003;
+	optional string customname = 65004;
+	optional string jsontag = 65005;
+	optional string moretags = 65006;
+	optional string casttype = 65007;
+	optional string castkey = 65008;
+	optional string castvalue = 65009;
+
+	optional bool stdtime = 65010;
+	optional bool stdduration = 65011;
+	optional bool wktpointer = 65012;
+
+}

vendor/github.com/gogo/protobuf/gogoproto/helper.go

@@ -0,0 +1,415 @@
+// Protocol Buffers for Go with Gadgets
+//
+// Copyright (c) 2013, The GoGo Authors. All rights reserved.
+// http://github.com/gogo/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package gogoproto
+
+import google_protobuf "github.com/gogo/protobuf/protoc-gen-gogo/descriptor"
+import proto "github.com/gogo/protobuf/proto"
+
+func IsEmbed(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Embed, false)
+}
+
+func IsNullable(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Nullable, true)
+}
+
+func IsStdTime(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Stdtime, false)
+}
+
+func IsStdDuration(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Stdduration, false)
+}
+
+func IsStdDouble(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Wktpointer, false) && *field.TypeName == ".google.protobuf.DoubleValue"
+}
+
+func IsStdFloat(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Wktpointer, false) && *field.TypeName == ".google.protobuf.FloatValue"
+}
+
+func IsStdInt64(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Wktpointer, false) && *field.TypeName == ".google.protobuf.Int64Value"
+}
+
+func IsStdUInt64(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Wktpointer, false) && *field.TypeName == ".google.protobuf.UInt64Value"
+}
+
+func IsStdInt32(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Wktpointer, false) && *field.TypeName == ".google.protobuf.Int32Value"
+}
+
+func IsStdUInt32(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Wktpointer, false) && *field.TypeName == ".google.protobuf.UInt32Value"
+}
+
+func IsStdBool(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Wktpointer, false) && *field.TypeName == ".google.protobuf.BoolValue"
+}
+
+func IsStdString(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Wktpointer, false) && *field.TypeName == ".google.protobuf.StringValue"
+}
+
+func IsStdBytes(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Wktpointer, false) && *field.TypeName == ".google.protobuf.BytesValue"
+}
+
+func IsStdType(field *google_protobuf.FieldDescriptorProto) bool {
+	return (IsStdTime(field) || IsStdDuration(field) ||
+		IsStdDouble(field) || IsStdFloat(field) ||
+		IsStdInt64(field) || IsStdUInt64(field) ||
+		IsStdInt32(field) || IsStdUInt32(field) ||
+		IsStdBool(field) ||
+		IsStdString(field) || IsStdBytes(field))
+}
+
+func IsWktPtr(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Wktpointer, false)
+}
+
+func NeedsNilCheck(proto3 bool, field *google_protobuf.FieldDescriptorProto) bool {
+	nullable := IsNullable(field)
+	if field.IsMessage() || IsCustomType(field) {
+		return nullable
+	}
+	if proto3 {
+		return false
+	}
+	return nullable || *field.Type == google_protobuf.FieldDescriptorProto_TYPE_BYTES
+}
+
+func IsCustomType(field *google_protobuf.FieldDescriptorProto) bool {
+	typ := GetCustomType(field)
+	if len(typ) > 0 {
+		return true
+	}
+	return false
+}
+
+func IsCastType(field *google_protobuf.FieldDescriptorProto) bool {
+	typ := GetCastType(field)
+	if len(typ) > 0 {
+		return true
+	}
+	return false
+}
+
+func IsCastKey(field *google_protobuf.FieldDescriptorProto) bool {
+	typ := GetCastKey(field)
+	if len(typ) > 0 {
+		return true
+	}
+	return false
+}
+
+func IsCastValue(field *google_protobuf.FieldDescriptorProto) bool {
+	typ := GetCastValue(field)
+	if len(typ) > 0 {
+		return true
+	}
+	return false
+}
+
+func HasEnumDecl(file *google_protobuf.FileDescriptorProto, enum *google_protobuf.EnumDescriptorProto) bool {
+	return proto.GetBoolExtension(enum.Options, E_Enumdecl, proto.GetBoolExtension(file.Options, E_EnumdeclAll, true))
+}
+
+func HasTypeDecl(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_Typedecl, proto.GetBoolExtension(file.Options, E_TypedeclAll, true))
+}
+
+func GetCustomType(field *google_protobuf.FieldDescriptorProto) string {
+	if field == nil {
+		return ""
+	}
+	if field.Options != nil {
+		v, err := proto.GetExtension(field.Options, E_Customtype)
+		if err == nil && v.(*string) != nil {
+			return *(v.(*string))
+		}
+	}
+	return ""
+}
+
+func GetCastType(field *google_protobuf.FieldDescriptorProto) string {
+	if field == nil {
+		return ""
+	}
+	if field.Options != nil {
+		v, err := proto.GetExtension(field.Options, E_Casttype)
+		if err == nil && v.(*string) != nil {
+			return *(v.(*string))
+		}
+	}
+	return ""
+}
+
+func GetCastKey(field *google_protobuf.FieldDescriptorProto) string {
+	if field == nil {
+		return ""
+	}
+	if field.Options != nil {
+		v, err := proto.GetExtension(field.Options, E_Castkey)
+		if err == nil && v.(*string) != nil {
+			return *(v.(*string))
+		}
+	}
+	return ""
+}
+
+func GetCastValue(field *google_protobuf.FieldDescriptorProto) string {
+	if field == nil {
+		return ""
+	}
+	if field.Options != nil {
+		v, err := proto.GetExtension(field.Options, E_Castvalue)
+		if err == nil && v.(*string) != nil {
+			return *(v.(*string))
+		}
+	}
+	return ""
+}
+
+func IsCustomName(field *google_protobuf.FieldDescriptorProto) bool {
+	name := GetCustomName(field)
+	if len(name) > 0 {
+		return true
+	}
+	return false
+}
+
+func IsEnumCustomName(field *google_protobuf.EnumDescriptorProto) bool {
+	name := GetEnumCustomName(field)
+	if len(name) > 0 {
+		return true
+	}
+	return false
+}
+
+func IsEnumValueCustomName(field *google_protobuf.EnumValueDescriptorProto) bool {
+	name := GetEnumValueCustomName(field)
+	if len(name) > 0 {
+		return true
+	}
+	return false
+}
+
+func GetCustomName(field *google_protobuf.FieldDescriptorProto) string {
+	if field == nil {
+		return ""
+	}
+	if field.Options != nil {
+		v, err := proto.GetExtension(field.Options, E_Customname)
+		if err == nil && v.(*string) != nil {
+			return *(v.(*string))
+		}
+	}
+	return ""
+}
+
+func GetEnumCustomName(field *google_protobuf.EnumDescriptorProto) string {
+	if field == nil {
+		return ""
+	}
+	if field.Options != nil {
+		v, err := proto.GetExtension(field.Options, E_EnumCustomname)
+		if err == nil && v.(*string) != nil {
+			return *(v.(*string))
+		}
+	}
+	return ""
+}
+
+func GetEnumValueCustomName(field *google_protobuf.EnumValueDescriptorProto) string {
+	if field == nil {
+		return ""
+	}
+	if field.Options != nil {
+		v, err := proto.GetExtension(field.Options, E_EnumvalueCustomname)
+		if err == nil && v.(*string) != nil {
+			return *(v.(*string))
+		}
+	}
+	return ""
+}
+
+func GetJsonTag(field *google_protobuf.FieldDescriptorProto) *string {
+	if field == nil {
+		return nil
+	}
+	if field.Options != nil {
+		v, err := proto.GetExtension(field.Options, E_Jsontag)
+		if err == nil && v.(*string) != nil {
+			return (v.(*string))
+		}
+	}
+	return nil
+}
+
+func GetMoreTags(field *google_protobuf.FieldDescriptorProto) *string {
+	if field == nil {
+		return nil
+	}
+	if field.Options != nil {
+		v, err := proto.GetExtension(field.Options, E_Moretags)
+		if err == nil && v.(*string) != nil {
+			return (v.(*string))
+		}
+	}
+	return nil
+}
+
+type EnableFunc func(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool
+
+func EnabledGoEnumPrefix(file *google_protobuf.FileDescriptorProto, enum *google_protobuf.EnumDescriptorProto) bool {
+	return proto.GetBoolExtension(enum.Options, E_GoprotoEnumPrefix, proto.GetBoolExtension(file.Options, E_GoprotoEnumPrefixAll, true))
+}
+
+func EnabledGoStringer(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_GoprotoStringer, proto.GetBoolExtension(file.Options, E_GoprotoStringerAll, true))
+}
+
+func HasGoGetters(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_GoprotoGetters, proto.GetBoolExtension(file.Options, E_GoprotoGettersAll, true))
+}
+
+func IsUnion(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_Onlyone, proto.GetBoolExtension(file.Options, E_OnlyoneAll, false))
+}
+
+func HasGoString(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_Gostring, proto.GetBoolExtension(file.Options, E_GostringAll, false))
+}
+
+func HasEqual(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_Equal, proto.GetBoolExtension(file.Options, E_EqualAll, false))
+}
+
+func HasVerboseEqual(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_VerboseEqual, proto.GetBoolExtension(file.Options, E_VerboseEqualAll, false))
+}
+
+func IsStringer(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_Stringer, proto.GetBoolExtension(file.Options, E_StringerAll, false))
+}
+
+func IsFace(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_Face, proto.GetBoolExtension(file.Options, E_FaceAll, false))
+}
+
+func HasDescription(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_Description, proto.GetBoolExtension(file.Options, E_DescriptionAll, false))
+}
+
+func HasPopulate(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_Populate, proto.GetBoolExtension(file.Options, E_PopulateAll, false))
+}
+
+func HasTestGen(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_Testgen, proto.GetBoolExtension(file.Options, E_TestgenAll, false))
+}
+
+func HasBenchGen(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_Benchgen, proto.GetBoolExtension(file.Options, E_BenchgenAll, false))
+}
+
+func IsMarshaler(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_Marshaler, proto.GetBoolExtension(file.Options, E_MarshalerAll, false))
+}
+
+func IsUnmarshaler(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_Unmarshaler, proto.GetBoolExtension(file.Options, E_UnmarshalerAll, false))
+}
+
+func IsStableMarshaler(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_StableMarshaler, proto.GetBoolExtension(file.Options, E_StableMarshalerAll, false))
+}
+
+func IsSizer(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_Sizer, proto.GetBoolExtension(file.Options, E_SizerAll, false))
+}
+
+func IsProtoSizer(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_Protosizer, proto.GetBoolExtension(file.Options, E_ProtosizerAll, false))
+}
+
+func IsGoEnumStringer(file *google_protobuf.FileDescriptorProto, enum *google_protobuf.EnumDescriptorProto) bool {
+	return proto.GetBoolExtension(enum.Options, E_GoprotoEnumStringer, proto.GetBoolExtension(file.Options, E_GoprotoEnumStringerAll, true))
+}
+
+func IsEnumStringer(file *google_protobuf.FileDescriptorProto, enum *google_protobuf.EnumDescriptorProto) bool {
+	return proto.GetBoolExtension(enum.Options, E_EnumStringer, proto.GetBoolExtension(file.Options, E_EnumStringerAll, false))
+}
+
+func IsUnsafeMarshaler(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_UnsafeMarshaler, proto.GetBoolExtension(file.Options, E_UnsafeMarshalerAll, false))
+}
+
+func IsUnsafeUnmarshaler(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_UnsafeUnmarshaler, proto.GetBoolExtension(file.Options, E_UnsafeUnmarshalerAll, false))
+}
+
+func HasExtensionsMap(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_GoprotoExtensionsMap, proto.GetBoolExtension(file.Options, E_GoprotoExtensionsMapAll, true))
+}
+
+func HasUnrecognized(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_GoprotoUnrecognized, proto.GetBoolExtension(file.Options, E_GoprotoUnrecognizedAll, true))
+}
+
+func IsProto3(file *google_protobuf.FileDescriptorProto) bool {
+	return file.GetSyntax() == "proto3"
+}
+
+func ImportsGoGoProto(file *google_protobuf.FileDescriptorProto) bool {
+	return proto.GetBoolExtension(file.Options, E_GogoprotoImport, true)
+}
+
+func HasCompare(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_Compare, proto.GetBoolExtension(file.Options, E_CompareAll, false))
+}
+
+func RegistersGolangProto(file *google_protobuf.FileDescriptorProto) bool {
+	return proto.GetBoolExtension(file.Options, E_GoprotoRegistration, false)
+}
+
+func HasMessageName(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_Messagename, proto.GetBoolExtension(file.Options, E_MessagenameAll, false))
+}
+
+func HasSizecache(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_GoprotoSizecache, proto.GetBoolExtension(file.Options, E_GoprotoSizecacheAll, true))
+}
+
+func HasUnkeyed(file *google_protobuf.FileDescriptorProto, message *google_protobuf.DescriptorProto) bool {
+	return proto.GetBoolExtension(message.Options, E_GoprotoUnkeyed, proto.GetBoolExtension(file.Options, E_GoprotoUnkeyedAll, true))
+}

vendor/github.com/gogo/protobuf/protoc-gen-gogo/descriptor/Makefile

@@ -0,0 +1,36 @@
+# Go support for Protocol Buffers - Google's data interchange format
+#
+# Copyright 2010 The Go Authors.  All rights reserved.
+# https://github.com/golang/protobuf
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+regenerate:
+	go install github.com/gogo/protobuf/protoc-gen-gogo
+	go install github.com/gogo/protobuf/protoc-gen-gostring
+	protoc --gogo_out=. -I=../../protobuf/google/protobuf ../../protobuf/google/protobuf/descriptor.proto
+	protoc --gostring_out=. -I=../../protobuf/google/protobuf ../../protobuf/google/protobuf/descriptor.proto

vendor/github.com/gogo/protobuf/protoc-gen-gogo/descriptor/descriptor.go

@@ -0,0 +1,118 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2016 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Package descriptor provides functions for obtaining protocol buffer
+// descriptors for generated Go types.
+//
+// These functions cannot go in package proto because they depend on the
+// generated protobuf descriptor messages, which themselves depend on proto.
+package descriptor
+
+import (
+	"bytes"
+	"compress/gzip"
+	"fmt"
+	"io/ioutil"
+
+	"github.com/gogo/protobuf/proto"
+)
+
+// extractFile extracts a FileDescriptorProto from a gzip'd buffer.
+func extractFile(gz []byte) (*FileDescriptorProto, error) {
+	r, err := gzip.NewReader(bytes.NewReader(gz))
+	if err != nil {
+		return nil, fmt.Errorf("failed to open gzip reader: %v", err)
+	}
+	defer r.Close()
+
+	b, err := ioutil.ReadAll(r)
+	if err != nil {
+		return nil, fmt.Errorf("failed to uncompress descriptor: %v", err)
+	}
+
+	fd := new(FileDescriptorProto)
+	if err := proto.Unmarshal(b, fd); err != nil {
+		return nil, fmt.Errorf("malformed FileDescriptorProto: %v", err)
+	}
+
+	return fd, nil
+}
+
+// Message is a proto.Message with a method to return its descriptor.
+//
+// Message types generated by the protocol compiler always satisfy
+// the Message interface.
+type Message interface {
+	proto.Message
+	Descriptor() ([]byte, []int)
+}
+
+// ForMessage returns a FileDescriptorProto and a DescriptorProto from within it
+// describing the given message.
+func ForMessage(msg Message) (fd *FileDescriptorProto, md *DescriptorProto) {
+	gz, path := msg.Descriptor()
+	fd, err := extractFile(gz)
+	if err != nil {
+		panic(fmt.Sprintf("invalid FileDescriptorProto for %T: %v", msg, err))
+	}
+
+	md = fd.MessageType[path[0]]
+	for _, i := range path[1:] {
+		md = md.NestedType[i]
+	}
+	return fd, md
+}
+
+// Is this field a scalar numeric type?
+func (field *FieldDescriptorProto) IsScalar() bool {
+	if field.Type == nil {
+		return false
+	}
+	switch *field.Type {
+	case FieldDescriptorProto_TYPE_DOUBLE,
+		FieldDescriptorProto_TYPE_FLOAT,
+		FieldDescriptorProto_TYPE_INT64,
+		FieldDescriptorProto_TYPE_UINT64,
+		FieldDescriptorProto_TYPE_INT32,
+		FieldDescriptorProto_TYPE_FIXED64,
+		FieldDescriptorProto_TYPE_FIXED32,
+		FieldDescriptorProto_TYPE_BOOL,
+		FieldDescriptorProto_TYPE_UINT32,
+		FieldDescriptorProto_TYPE_ENUM,
+		FieldDescriptorProto_TYPE_SFIXED32,
+		FieldDescriptorProto_TYPE_SFIXED64,
+		FieldDescriptorProto_TYPE_SINT32,
+		FieldDescriptorProto_TYPE_SINT64:
+		return true
+	default:
+		return false
+	}
+}

vendor/github.com/gogo/protobuf/protoc-gen-gogo/descriptor/descriptor_gostring.gen.go

@@ -0,0 +1,752 @@
+// Code generated by protoc-gen-gogo. DO NOT EDIT.
+// source: descriptor.proto
+
+package descriptor
+
+import (
+	fmt "fmt"
+	github_com_gogo_protobuf_proto "github.com/gogo/protobuf/proto"
+	proto "github.com/gogo/protobuf/proto"
+	math "math"
+	reflect "reflect"
+	sort "sort"
+	strconv "strconv"
+	strings "strings"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+func (this *FileDescriptorSet) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 5)
+	s = append(s, "&descriptor.FileDescriptorSet{")
+	if this.File != nil {
+		s = append(s, "File: "+fmt.Sprintf("%#v", this.File)+",\n")
+	}
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *FileDescriptorProto) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 16)
+	s = append(s, "&descriptor.FileDescriptorProto{")
+	if this.Name != nil {
+		s = append(s, "Name: "+valueToGoStringDescriptor(this.Name, "string")+",\n")
+	}
+	if this.Package != nil {
+		s = append(s, "Package: "+valueToGoStringDescriptor(this.Package, "string")+",\n")
+	}
+	if this.Dependency != nil {
+		s = append(s, "Dependency: "+fmt.Sprintf("%#v", this.Dependency)+",\n")
+	}
+	if this.PublicDependency != nil {
+		s = append(s, "PublicDependency: "+fmt.Sprintf("%#v", this.PublicDependency)+",\n")
+	}
+	if this.WeakDependency != nil {
+		s = append(s, "WeakDependency: "+fmt.Sprintf("%#v", this.WeakDependency)+",\n")
+	}
+	if this.MessageType != nil {
+		s = append(s, "MessageType: "+fmt.Sprintf("%#v", this.MessageType)+",\n")
+	}
+	if this.EnumType != nil {
+		s = append(s, "EnumType: "+fmt.Sprintf("%#v", this.EnumType)+",\n")
+	}
+	if this.Service != nil {
+		s = append(s, "Service: "+fmt.Sprintf("%#v", this.Service)+",\n")
+	}
+	if this.Extension != nil {
+		s = append(s, "Extension: "+fmt.Sprintf("%#v", this.Extension)+",\n")
+	}
+	if this.Options != nil {
+		s = append(s, "Options: "+fmt.Sprintf("%#v", this.Options)+",\n")
+	}
+	if this.SourceCodeInfo != nil {
+		s = append(s, "SourceCodeInfo: "+fmt.Sprintf("%#v", this.SourceCodeInfo)+",\n")
+	}
+	if this.Syntax != nil {
+		s = append(s, "Syntax: "+valueToGoStringDescriptor(this.Syntax, "string")+",\n")
+	}
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *DescriptorProto) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 14)
+	s = append(s, "&descriptor.DescriptorProto{")
+	if this.Name != nil {
+		s = append(s, "Name: "+valueToGoStringDescriptor(this.Name, "string")+",\n")
+	}
+	if this.Field != nil {
+		s = append(s, "Field: "+fmt.Sprintf("%#v", this.Field)+",\n")
+	}
+	if this.Extension != nil {
+		s = append(s, "Extension: "+fmt.Sprintf("%#v", this.Extension)+",\n")
+	}
+	if this.NestedType != nil {
+		s = append(s, "NestedType: "+fmt.Sprintf("%#v", this.NestedType)+",\n")
+	}
+	if this.EnumType != nil {
+		s = append(s, "EnumType: "+fmt.Sprintf("%#v", this.EnumType)+",\n")
+	}
+	if this.ExtensionRange != nil {
+		s = append(s, "ExtensionRange: "+fmt.Sprintf("%#v", this.ExtensionRange)+",\n")
+	}
+	if this.OneofDecl != nil {
+		s = append(s, "OneofDecl: "+fmt.Sprintf("%#v", this.OneofDecl)+",\n")
+	}
+	if this.Options != nil {
+		s = append(s, "Options: "+fmt.Sprintf("%#v", this.Options)+",\n")
+	}
+	if this.ReservedRange != nil {
+		s = append(s, "ReservedRange: "+fmt.Sprintf("%#v", this.ReservedRange)+",\n")
+	}
+	if this.ReservedName != nil {
+		s = append(s, "ReservedName: "+fmt.Sprintf("%#v", this.ReservedName)+",\n")
+	}
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *DescriptorProto_ExtensionRange) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 7)
+	s = append(s, "&descriptor.DescriptorProto_ExtensionRange{")
+	if this.Start != nil {
+		s = append(s, "Start: "+valueToGoStringDescriptor(this.Start, "int32")+",\n")
+	}
+	if this.End != nil {
+		s = append(s, "End: "+valueToGoStringDescriptor(this.End, "int32")+",\n")
+	}
+	if this.Options != nil {
+		s = append(s, "Options: "+fmt.Sprintf("%#v", this.Options)+",\n")
+	}
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *DescriptorProto_ReservedRange) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 6)
+	s = append(s, "&descriptor.DescriptorProto_ReservedRange{")
+	if this.Start != nil {
+		s = append(s, "Start: "+valueToGoStringDescriptor(this.Start, "int32")+",\n")
+	}
+	if this.End != nil {
+		s = append(s, "End: "+valueToGoStringDescriptor(this.End, "int32")+",\n")
+	}
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *ExtensionRangeOptions) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 5)
+	s = append(s, "&descriptor.ExtensionRangeOptions{")
+	if this.UninterpretedOption != nil {
+		s = append(s, "UninterpretedOption: "+fmt.Sprintf("%#v", this.UninterpretedOption)+",\n")
+	}
+	s = append(s, "XXX_InternalExtensions: "+extensionToGoStringDescriptor(this)+",\n")
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *FieldDescriptorProto) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 14)
+	s = append(s, "&descriptor.FieldDescriptorProto{")
+	if this.Name != nil {
+		s = append(s, "Name: "+valueToGoStringDescriptor(this.Name, "string")+",\n")
+	}
+	if this.Number != nil {
+		s = append(s, "Number: "+valueToGoStringDescriptor(this.Number, "int32")+",\n")
+	}
+	if this.Label != nil {
+		s = append(s, "Label: "+valueToGoStringDescriptor(this.Label, "FieldDescriptorProto_Label")+",\n")
+	}
+	if this.Type != nil {
+		s = append(s, "Type: "+valueToGoStringDescriptor(this.Type, "FieldDescriptorProto_Type")+",\n")
+	}
+	if this.TypeName != nil {
+		s = append(s, "TypeName: "+valueToGoStringDescriptor(this.TypeName, "string")+",\n")
+	}
+	if this.Extendee != nil {
+		s = append(s, "Extendee: "+valueToGoStringDescriptor(this.Extendee, "string")+",\n")
+	}
+	if this.DefaultValue != nil {
+		s = append(s, "DefaultValue: "+valueToGoStringDescriptor(this.DefaultValue, "string")+",\n")
+	}
+	if this.OneofIndex != nil {
+		s = append(s, "OneofIndex: "+valueToGoStringDescriptor(this.OneofIndex, "int32")+",\n")
+	}
+	if this.JsonName != nil {
+		s = append(s, "JsonName: "+valueToGoStringDescriptor(this.JsonName, "string")+",\n")
+	}
+	if this.Options != nil {
+		s = append(s, "Options: "+fmt.Sprintf("%#v", this.Options)+",\n")
+	}
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *OneofDescriptorProto) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 6)
+	s = append(s, "&descriptor.OneofDescriptorProto{")
+	if this.Name != nil {
+		s = append(s, "Name: "+valueToGoStringDescriptor(this.Name, "string")+",\n")
+	}
+	if this.Options != nil {
+		s = append(s, "Options: "+fmt.Sprintf("%#v", this.Options)+",\n")
+	}
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *EnumDescriptorProto) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 9)
+	s = append(s, "&descriptor.EnumDescriptorProto{")
+	if this.Name != nil {
+		s = append(s, "Name: "+valueToGoStringDescriptor(this.Name, "string")+",\n")
+	}
+	if this.Value != nil {
+		s = append(s, "Value: "+fmt.Sprintf("%#v", this.Value)+",\n")
+	}
+	if this.Options != nil {
+		s = append(s, "Options: "+fmt.Sprintf("%#v", this.Options)+",\n")
+	}
+	if this.ReservedRange != nil {
+		s = append(s, "ReservedRange: "+fmt.Sprintf("%#v", this.ReservedRange)+",\n")
+	}
+	if this.ReservedName != nil {
+		s = append(s, "ReservedName: "+fmt.Sprintf("%#v", this.ReservedName)+",\n")
+	}
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *EnumDescriptorProto_EnumReservedRange) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 6)
+	s = append(s, "&descriptor.EnumDescriptorProto_EnumReservedRange{")
+	if this.Start != nil {
+		s = append(s, "Start: "+valueToGoStringDescriptor(this.Start, "int32")+",\n")
+	}
+	if this.End != nil {
+		s = append(s, "End: "+valueToGoStringDescriptor(this.End, "int32")+",\n")
+	}
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *EnumValueDescriptorProto) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 7)
+	s = append(s, "&descriptor.EnumValueDescriptorProto{")
+	if this.Name != nil {
+		s = append(s, "Name: "+valueToGoStringDescriptor(this.Name, "string")+",\n")
+	}
+	if this.Number != nil {
+		s = append(s, "Number: "+valueToGoStringDescriptor(this.Number, "int32")+",\n")
+	}
+	if this.Options != nil {
+		s = append(s, "Options: "+fmt.Sprintf("%#v", this.Options)+",\n")
+	}
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *ServiceDescriptorProto) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 7)
+	s = append(s, "&descriptor.ServiceDescriptorProto{")
+	if this.Name != nil {
+		s = append(s, "Name: "+valueToGoStringDescriptor(this.Name, "string")+",\n")
+	}
+	if this.Method != nil {
+		s = append(s, "Method: "+fmt.Sprintf("%#v", this.Method)+",\n")
+	}
+	if this.Options != nil {
+		s = append(s, "Options: "+fmt.Sprintf("%#v", this.Options)+",\n")
+	}
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *MethodDescriptorProto) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 10)
+	s = append(s, "&descriptor.MethodDescriptorProto{")
+	if this.Name != nil {
+		s = append(s, "Name: "+valueToGoStringDescriptor(this.Name, "string")+",\n")
+	}
+	if this.InputType != nil {
+		s = append(s, "InputType: "+valueToGoStringDescriptor(this.InputType, "string")+",\n")
+	}
+	if this.OutputType != nil {
+		s = append(s, "OutputType: "+valueToGoStringDescriptor(this.OutputType, "string")+",\n")
+	}
+	if this.Options != nil {
+		s = append(s, "Options: "+fmt.Sprintf("%#v", this.Options)+",\n")
+	}
+	if this.ClientStreaming != nil {
+		s = append(s, "ClientStreaming: "+valueToGoStringDescriptor(this.ClientStreaming, "bool")+",\n")
+	}
+	if this.ServerStreaming != nil {
+		s = append(s, "ServerStreaming: "+valueToGoStringDescriptor(this.ServerStreaming, "bool")+",\n")
+	}
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *FileOptions) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 25)
+	s = append(s, "&descriptor.FileOptions{")
+	if this.JavaPackage != nil {
+		s = append(s, "JavaPackage: "+valueToGoStringDescriptor(this.JavaPackage, "string")+",\n")
+	}
+	if this.JavaOuterClassname != nil {
+		s = append(s, "JavaOuterClassname: "+valueToGoStringDescriptor(this.JavaOuterClassname, "string")+",\n")
+	}
+	if this.JavaMultipleFiles != nil {
+		s = append(s, "JavaMultipleFiles: "+valueToGoStringDescriptor(this.JavaMultipleFiles, "bool")+",\n")
+	}
+	if this.JavaGenerateEqualsAndHash != nil {
+		s = append(s, "JavaGenerateEqualsAndHash: "+valueToGoStringDescriptor(this.JavaGenerateEqualsAndHash, "bool")+",\n")
+	}
+	if this.JavaStringCheckUtf8 != nil {
+		s = append(s, "JavaStringCheckUtf8: "+valueToGoStringDescriptor(this.JavaStringCheckUtf8, "bool")+",\n")
+	}
+	if this.OptimizeFor != nil {
+		s = append(s, "OptimizeFor: "+valueToGoStringDescriptor(this.OptimizeFor, "FileOptions_OptimizeMode")+",\n")
+	}
+	if this.GoPackage != nil {
+		s = append(s, "GoPackage: "+valueToGoStringDescriptor(this.GoPackage, "string")+",\n")
+	}
+	if this.CcGenericServices != nil {
+		s = append(s, "CcGenericServices: "+valueToGoStringDescriptor(this.CcGenericServices, "bool")+",\n")
+	}
+	if this.JavaGenericServices != nil {
+		s = append(s, "JavaGenericServices: "+valueToGoStringDescriptor(this.JavaGenericServices, "bool")+",\n")
+	}
+	if this.PyGenericServices != nil {
+		s = append(s, "PyGenericServices: "+valueToGoStringDescriptor(this.PyGenericServices, "bool")+",\n")
+	}
+	if this.PhpGenericServices != nil {
+		s = append(s, "PhpGenericServices: "+valueToGoStringDescriptor(this.PhpGenericServices, "bool")+",\n")
+	}
+	if this.Deprecated != nil {
+		s = append(s, "Deprecated: "+valueToGoStringDescriptor(this.Deprecated, "bool")+",\n")
+	}
+	if this.CcEnableArenas != nil {
+		s = append(s, "CcEnableArenas: "+valueToGoStringDescriptor(this.CcEnableArenas, "bool")+",\n")
+	}
+	if this.ObjcClassPrefix != nil {
+		s = append(s, "ObjcClassPrefix: "+valueToGoStringDescriptor(this.ObjcClassPrefix, "string")+",\n")
+	}
+	if this.CsharpNamespace != nil {
+		s = append(s, "CsharpNamespace: "+valueToGoStringDescriptor(this.CsharpNamespace, "string")+",\n")
+	}
+	if this.SwiftPrefix != nil {
+		s = append(s, "SwiftPrefix: "+valueToGoStringDescriptor(this.SwiftPrefix, "string")+",\n")
+	}
+	if this.PhpClassPrefix != nil {
+		s = append(s, "PhpClassPrefix: "+valueToGoStringDescriptor(this.PhpClassPrefix, "string")+",\n")
+	}
+	if this.PhpNamespace != nil {
+		s = append(s, "PhpNamespace: "+valueToGoStringDescriptor(this.PhpNamespace, "string")+",\n")
+	}
+	if this.PhpMetadataNamespace != nil {
+		s = append(s, "PhpMetadataNamespace: "+valueToGoStringDescriptor(this.PhpMetadataNamespace, "string")+",\n")
+	}
+	if this.RubyPackage != nil {
+		s = append(s, "RubyPackage: "+valueToGoStringDescriptor(this.RubyPackage, "string")+",\n")
+	}
+	if this.UninterpretedOption != nil {
+		s = append(s, "UninterpretedOption: "+fmt.Sprintf("%#v", this.UninterpretedOption)+",\n")
+	}
+	s = append(s, "XXX_InternalExtensions: "+extensionToGoStringDescriptor(this)+",\n")
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *MessageOptions) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 9)
+	s = append(s, "&descriptor.MessageOptions{")
+	if this.MessageSetWireFormat != nil {
+		s = append(s, "MessageSetWireFormat: "+valueToGoStringDescriptor(this.MessageSetWireFormat, "bool")+",\n")
+	}
+	if this.NoStandardDescriptorAccessor != nil {
+		s = append(s, "NoStandardDescriptorAccessor: "+valueToGoStringDescriptor(this.NoStandardDescriptorAccessor, "bool")+",\n")
+	}
+	if this.Deprecated != nil {
+		s = append(s, "Deprecated: "+valueToGoStringDescriptor(this.Deprecated, "bool")+",\n")
+	}
+	if this.MapEntry != nil {
+		s = append(s, "MapEntry: "+valueToGoStringDescriptor(this.MapEntry, "bool")+",\n")
+	}
+	if this.UninterpretedOption != nil {
+		s = append(s, "UninterpretedOption: "+fmt.Sprintf("%#v", this.UninterpretedOption)+",\n")
+	}
+	s = append(s, "XXX_InternalExtensions: "+extensionToGoStringDescriptor(this)+",\n")
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *FieldOptions) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 11)
+	s = append(s, "&descriptor.FieldOptions{")
+	if this.Ctype != nil {
+		s = append(s, "Ctype: "+valueToGoStringDescriptor(this.Ctype, "FieldOptions_CType")+",\n")
+	}
+	if this.Packed != nil {
+		s = append(s, "Packed: "+valueToGoStringDescriptor(this.Packed, "bool")+",\n")
+	}
+	if this.Jstype != nil {
+		s = append(s, "Jstype: "+valueToGoStringDescriptor(this.Jstype, "FieldOptions_JSType")+",\n")
+	}
+	if this.Lazy != nil {
+		s = append(s, "Lazy: "+valueToGoStringDescriptor(this.Lazy, "bool")+",\n")
+	}
+	if this.Deprecated != nil {
+		s = append(s, "Deprecated: "+valueToGoStringDescriptor(this.Deprecated, "bool")+",\n")
+	}
+	if this.Weak != nil {
+		s = append(s, "Weak: "+valueToGoStringDescriptor(this.Weak, "bool")+",\n")
+	}
+	if this.UninterpretedOption != nil {
+		s = append(s, "UninterpretedOption: "+fmt.Sprintf("%#v", this.UninterpretedOption)+",\n")
+	}
+	s = append(s, "XXX_InternalExtensions: "+extensionToGoStringDescriptor(this)+",\n")
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *OneofOptions) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 5)
+	s = append(s, "&descriptor.OneofOptions{")
+	if this.UninterpretedOption != nil {
+		s = append(s, "UninterpretedOption: "+fmt.Sprintf("%#v", this.UninterpretedOption)+",\n")
+	}
+	s = append(s, "XXX_InternalExtensions: "+extensionToGoStringDescriptor(this)+",\n")
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *EnumOptions) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 7)
+	s = append(s, "&descriptor.EnumOptions{")
+	if this.AllowAlias != nil {
+		s = append(s, "AllowAlias: "+valueToGoStringDescriptor(this.AllowAlias, "bool")+",\n")
+	}
+	if this.Deprecated != nil {
+		s = append(s, "Deprecated: "+valueToGoStringDescriptor(this.Deprecated, "bool")+",\n")
+	}
+	if this.UninterpretedOption != nil {
+		s = append(s, "UninterpretedOption: "+fmt.Sprintf("%#v", this.UninterpretedOption)+",\n")
+	}
+	s = append(s, "XXX_InternalExtensions: "+extensionToGoStringDescriptor(this)+",\n")
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *EnumValueOptions) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 6)
+	s = append(s, "&descriptor.EnumValueOptions{")
+	if this.Deprecated != nil {
+		s = append(s, "Deprecated: "+valueToGoStringDescriptor(this.Deprecated, "bool")+",\n")
+	}
+	if this.UninterpretedOption != nil {
+		s = append(s, "UninterpretedOption: "+fmt.Sprintf("%#v", this.UninterpretedOption)+",\n")
+	}
+	s = append(s, "XXX_InternalExtensions: "+extensionToGoStringDescriptor(this)+",\n")
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *ServiceOptions) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 6)
+	s = append(s, "&descriptor.ServiceOptions{")
+	if this.Deprecated != nil {
+		s = append(s, "Deprecated: "+valueToGoStringDescriptor(this.Deprecated, "bool")+",\n")
+	}
+	if this.UninterpretedOption != nil {
+		s = append(s, "UninterpretedOption: "+fmt.Sprintf("%#v", this.UninterpretedOption)+",\n")
+	}
+	s = append(s, "XXX_InternalExtensions: "+extensionToGoStringDescriptor(this)+",\n")
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *MethodOptions) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 7)
+	s = append(s, "&descriptor.MethodOptions{")
+	if this.Deprecated != nil {
+		s = append(s, "Deprecated: "+valueToGoStringDescriptor(this.Deprecated, "bool")+",\n")
+	}
+	if this.IdempotencyLevel != nil {
+		s = append(s, "IdempotencyLevel: "+valueToGoStringDescriptor(this.IdempotencyLevel, "MethodOptions_IdempotencyLevel")+",\n")
+	}
+	if this.UninterpretedOption != nil {
+		s = append(s, "UninterpretedOption: "+fmt.Sprintf("%#v", this.UninterpretedOption)+",\n")
+	}
+	s = append(s, "XXX_InternalExtensions: "+extensionToGoStringDescriptor(this)+",\n")
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *UninterpretedOption) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 11)
+	s = append(s, "&descriptor.UninterpretedOption{")
+	if this.Name != nil {
+		s = append(s, "Name: "+fmt.Sprintf("%#v", this.Name)+",\n")
+	}
+	if this.IdentifierValue != nil {
+		s = append(s, "IdentifierValue: "+valueToGoStringDescriptor(this.IdentifierValue, "string")+",\n")
+	}
+	if this.PositiveIntValue != nil {
+		s = append(s, "PositiveIntValue: "+valueToGoStringDescriptor(this.PositiveIntValue, "uint64")+",\n")
+	}
+	if this.NegativeIntValue != nil {
+		s = append(s, "NegativeIntValue: "+valueToGoStringDescriptor(this.NegativeIntValue, "int64")+",\n")
+	}
+	if this.DoubleValue != nil {
+		s = append(s, "DoubleValue: "+valueToGoStringDescriptor(this.DoubleValue, "float64")+",\n")
+	}
+	if this.StringValue != nil {
+		s = append(s, "StringValue: "+valueToGoStringDescriptor(this.StringValue, "byte")+",\n")
+	}
+	if this.AggregateValue != nil {
+		s = append(s, "AggregateValue: "+valueToGoStringDescriptor(this.AggregateValue, "string")+",\n")
+	}
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *UninterpretedOption_NamePart) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 6)
+	s = append(s, "&descriptor.UninterpretedOption_NamePart{")
+	if this.NamePart != nil {
+		s = append(s, "NamePart: "+valueToGoStringDescriptor(this.NamePart, "string")+",\n")
+	}
+	if this.IsExtension != nil {
+		s = append(s, "IsExtension: "+valueToGoStringDescriptor(this.IsExtension, "bool")+",\n")
+	}
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *SourceCodeInfo) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 5)
+	s = append(s, "&descriptor.SourceCodeInfo{")
+	if this.Location != nil {
+		s = append(s, "Location: "+fmt.Sprintf("%#v", this.Location)+",\n")
+	}
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *SourceCodeInfo_Location) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 9)
+	s = append(s, "&descriptor.SourceCodeInfo_Location{")
+	if this.Path != nil {
+		s = append(s, "Path: "+fmt.Sprintf("%#v", this.Path)+",\n")
+	}
+	if this.Span != nil {
+		s = append(s, "Span: "+fmt.Sprintf("%#v", this.Span)+",\n")
+	}
+	if this.LeadingComments != nil {
+		s = append(s, "LeadingComments: "+valueToGoStringDescriptor(this.LeadingComments, "string")+",\n")
+	}
+	if this.TrailingComments != nil {
+		s = append(s, "TrailingComments: "+valueToGoStringDescriptor(this.TrailingComments, "string")+",\n")
+	}
+	if this.LeadingDetachedComments != nil {
+		s = append(s, "LeadingDetachedComments: "+fmt.Sprintf("%#v", this.LeadingDetachedComments)+",\n")
+	}
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *GeneratedCodeInfo) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 5)
+	s = append(s, "&descriptor.GeneratedCodeInfo{")
+	if this.Annotation != nil {
+		s = append(s, "Annotation: "+fmt.Sprintf("%#v", this.Annotation)+",\n")
+	}
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func (this *GeneratedCodeInfo_Annotation) GoString() string {
+	if this == nil {
+		return "nil"
+	}
+	s := make([]string, 0, 8)
+	s = append(s, "&descriptor.GeneratedCodeInfo_Annotation{")
+	if this.Path != nil {
+		s = append(s, "Path: "+fmt.Sprintf("%#v", this.Path)+",\n")
+	}
+	if this.SourceFile != nil {
+		s = append(s, "SourceFile: "+valueToGoStringDescriptor(this.SourceFile, "string")+",\n")
+	}
+	if this.Begin != nil {
+		s = append(s, "Begin: "+valueToGoStringDescriptor(this.Begin, "int32")+",\n")
+	}
+	if this.End != nil {
+		s = append(s, "End: "+valueToGoStringDescriptor(this.End, "int32")+",\n")
+	}
+	if this.XXX_unrecognized != nil {
+		s = append(s, "XXX_unrecognized:"+fmt.Sprintf("%#v", this.XXX_unrecognized)+",\n")
+	}
+	s = append(s, "}")
+	return strings.Join(s, "")
+}
+func valueToGoStringDescriptor(v interface{}, typ string) string {
+	rv := reflect.ValueOf(v)
+	if rv.IsNil() {
+		return "nil"
+	}
+	pv := reflect.Indirect(rv).Interface()
+	return fmt.Sprintf("func(v %v) *%v { return &v } ( %#v )", typ, typ, pv)
+}
+func extensionToGoStringDescriptor(m github_com_gogo_protobuf_proto.Message) string {
+	e := github_com_gogo_protobuf_proto.GetUnsafeExtensionsMap(m)
+	if e == nil {
+		return "nil"
+	}
+	s := "proto.NewUnsafeXXX_InternalExtensions(map[int32]proto.Extension{"
+	keys := make([]int, 0, len(e))
+	for k := range e {
+		keys = append(keys, int(k))
+	}
+	sort.Ints(keys)
+	ss := []string{}
+	for _, k := range keys {
+		ss = append(ss, strconv.Itoa(k)+": "+e[int32(k)].GoString())
+	}
+	s += strings.Join(ss, ",") + "})"
+	return s
+}

vendor/github.com/gogo/protobuf/protoc-gen-gogo/descriptor/helper.go

@@ -0,0 +1,390 @@
+// Protocol Buffers for Go with Gadgets
+//
+// Copyright (c) 2013, The GoGo Authors. All rights reserved.
+// http://github.com/gogo/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package descriptor
+
+import (
+	"strings"
+)
+
+func (msg *DescriptorProto) GetMapFields() (*FieldDescriptorProto, *FieldDescriptorProto) {
+	if !msg.GetOptions().GetMapEntry() {
+		return nil, nil
+	}
+	return msg.GetField()[0], msg.GetField()[1]
+}
+
+func dotToUnderscore(r rune) rune {
+	if r == '.' {
+		return '_'
+	}
+	return r
+}
+
+func (field *FieldDescriptorProto) WireType() (wire int) {
+	switch *field.Type {
+	case FieldDescriptorProto_TYPE_DOUBLE:
+		return 1
+	case FieldDescriptorProto_TYPE_FLOAT:
+		return 5
+	case FieldDescriptorProto_TYPE_INT64:
+		return 0
+	case FieldDescriptorProto_TYPE_UINT64:
+		return 0
+	case FieldDescriptorProto_TYPE_INT32:
+		return 0
+	case FieldDescriptorProto_TYPE_UINT32:
+		return 0
+	case FieldDescriptorProto_TYPE_FIXED64:
+		return 1
+	case FieldDescriptorProto_TYPE_FIXED32:
+		return 5
+	case FieldDescriptorProto_TYPE_BOOL:
+		return 0
+	case FieldDescriptorProto_TYPE_STRING:
+		return 2
+	case FieldDescriptorProto_TYPE_GROUP:
+		return 2
+	case FieldDescriptorProto_TYPE_MESSAGE:
+		return 2
+	case FieldDescriptorProto_TYPE_BYTES:
+		return 2
+	case FieldDescriptorProto_TYPE_ENUM:
+		return 0
+	case FieldDescriptorProto_TYPE_SFIXED32:
+		return 5
+	case FieldDescriptorProto_TYPE_SFIXED64:
+		return 1
+	case FieldDescriptorProto_TYPE_SINT32:
+		return 0
+	case FieldDescriptorProto_TYPE_SINT64:
+		return 0
+	}
+	panic("unreachable")
+}
+
+func (field *FieldDescriptorProto) GetKeyUint64() (x uint64) {
+	packed := field.IsPacked()
+	wireType := field.WireType()
+	fieldNumber := field.GetNumber()
+	if packed {
+		wireType = 2
+	}
+	x = uint64(uint32(fieldNumber)<<3 | uint32(wireType))
+	return x
+}
+
+func (field *FieldDescriptorProto) GetKey3Uint64() (x uint64) {
+	packed := field.IsPacked3()
+	wireType := field.WireType()
+	fieldNumber := field.GetNumber()
+	if packed {
+		wireType = 2
+	}
+	x = uint64(uint32(fieldNumber)<<3 | uint32(wireType))
+	return x
+}
+
+func (field *FieldDescriptorProto) GetKey() []byte {
+	x := field.GetKeyUint64()
+	i := 0
+	keybuf := make([]byte, 0)
+	for i = 0; x > 127; i++ {
+		keybuf = append(keybuf, 0x80|uint8(x&0x7F))
+		x >>= 7
+	}
+	keybuf = append(keybuf, uint8(x))
+	return keybuf
+}
+
+func (field *FieldDescriptorProto) GetKey3() []byte {
+	x := field.GetKey3Uint64()
+	i := 0
+	keybuf := make([]byte, 0)
+	for i = 0; x > 127; i++ {
+		keybuf = append(keybuf, 0x80|uint8(x&0x7F))
+		x >>= 7
+	}
+	keybuf = append(keybuf, uint8(x))
+	return keybuf
+}
+
+func (desc *FileDescriptorSet) GetField(packageName, messageName, fieldName string) *FieldDescriptorProto {
+	msg := desc.GetMessage(packageName, messageName)
+	if msg == nil {
+		return nil
+	}
+	for _, field := range msg.GetField() {
+		if field.GetName() == fieldName {
+			return field
+		}
+	}
+	return nil
+}
+
+func (file *FileDescriptorProto) GetMessage(typeName string) *DescriptorProto {
+	for _, msg := range file.GetMessageType() {
+		if msg.GetName() == typeName {
+			return msg
+		}
+		nes := file.GetNestedMessage(msg, strings.TrimPrefix(typeName, msg.GetName()+"."))
+		if nes != nil {
+			return nes
+		}
+	}
+	return nil
+}
+
+func (file *FileDescriptorProto) GetNestedMessage(msg *DescriptorProto, typeName string) *DescriptorProto {
+	for _, nes := range msg.GetNestedType() {
+		if nes.GetName() == typeName {
+			return nes
+		}
+		res := file.GetNestedMessage(nes, strings.TrimPrefix(typeName, nes.GetName()+"."))
+		if res != nil {
+			return res
+		}
+	}
+	return nil
+}
+
+func (desc *FileDescriptorSet) GetMessage(packageName string, typeName string) *DescriptorProto {
+	for _, file := range desc.GetFile() {
+		if strings.Map(dotToUnderscore, file.GetPackage()) != strings.Map(dotToUnderscore, packageName) {
+			continue
+		}
+		for _, msg := range file.GetMessageType() {
+			if msg.GetName() == typeName {
+				return msg
+			}
+		}
+		for _, msg := range file.GetMessageType() {
+			for _, nes := range msg.GetNestedType() {
+				if nes.GetName() == typeName {
+					return nes
+				}
+				if msg.GetName()+"."+nes.GetName() == typeName {
+					return nes
+				}
+			}
+		}
+	}
+	return nil
+}
+
+func (desc *FileDescriptorSet) IsProto3(packageName string, typeName string) bool {
+	for _, file := range desc.GetFile() {
+		if strings.Map(dotToUnderscore, file.GetPackage()) != strings.Map(dotToUnderscore, packageName) {
+			continue
+		}
+		for _, msg := range file.GetMessageType() {
+			if msg.GetName() == typeName {
+				return file.GetSyntax() == "proto3"
+			}
+		}
+		for _, msg := range file.GetMessageType() {
+			for _, nes := range msg.GetNestedType() {
+				if nes.GetName() == typeName {
+					return file.GetSyntax() == "proto3"
+				}
+				if msg.GetName()+"."+nes.GetName() == typeName {
+					return file.GetSyntax() == "proto3"
+				}
+			}
+		}
+	}
+	return false
+}
+
+func (msg *DescriptorProto) IsExtendable() bool {
+	return len(msg.GetExtensionRange()) > 0
+}
+
+func (desc *FileDescriptorSet) FindExtension(packageName string, typeName string, fieldName string) (extPackageName string, field *FieldDescriptorProto) {
+	parent := desc.GetMessage(packageName, typeName)
+	if parent == nil {
+		return "", nil
+	}
+	if !parent.IsExtendable() {
+		return "", nil
+	}
+	extendee := "." + packageName + "." + typeName
+	for _, file := range desc.GetFile() {
+		for _, ext := range file.GetExtension() {
+			if strings.Map(dotToUnderscore, file.GetPackage()) == strings.Map(dotToUnderscore, packageName) {
+				if !(ext.GetExtendee() == typeName || ext.GetExtendee() == extendee) {
+					continue
+				}
+			} else {
+				if ext.GetExtendee() != extendee {
+					continue
+				}
+			}
+			if ext.GetName() == fieldName {
+				return file.GetPackage(), ext
+			}
+		}
+	}
+	return "", nil
+}
+
+func (desc *FileDescriptorSet) FindExtensionByFieldNumber(packageName string, typeName string, fieldNum int32) (extPackageName string, field *FieldDescriptorProto) {
+	parent := desc.GetMessage(packageName, typeName)
+	if parent == nil {
+		return "", nil
+	}
+	if !parent.IsExtendable() {
+		return "", nil
+	}
+	extendee := "." + packageName + "." + typeName
+	for _, file := range desc.GetFile() {
+		for _, ext := range file.GetExtension() {
+			if strings.Map(dotToUnderscore, file.GetPackage()) == strings.Map(dotToUnderscore, packageName) {
+				if !(ext.GetExtendee() == typeName || ext.GetExtendee() == extendee) {
+					continue
+				}
+			} else {
+				if ext.GetExtendee() != extendee {
+					continue
+				}
+			}
+			if ext.GetNumber() == fieldNum {
+				return file.GetPackage(), ext
+			}
+		}
+	}
+	return "", nil
+}
+
+func (desc *FileDescriptorSet) FindMessage(packageName string, typeName string, fieldName string) (msgPackageName string, msgName string) {
+	parent := desc.GetMessage(packageName, typeName)
+	if parent == nil {
+		return "", ""
+	}
+	field := parent.GetFieldDescriptor(fieldName)
+	if field == nil {
+		var extPackageName string
+		extPackageName, field = desc.FindExtension(packageName, typeName, fieldName)
+		if field == nil {
+			return "", ""
+		}
+		packageName = extPackageName
+	}
+	typeNames := strings.Split(field.GetTypeName(), ".")
+	if len(typeNames) == 1 {
+		msg := desc.GetMessage(packageName, typeName)
+		if msg == nil {
+			return "", ""
+		}
+		return packageName, msg.GetName()
+	}
+	if len(typeNames) > 2 {
+		for i := 1; i < len(typeNames)-1; i++ {
+			packageName = strings.Join(typeNames[1:len(typeNames)-i], ".")
+			typeName = strings.Join(typeNames[len(typeNames)-i:], ".")
+			msg := desc.GetMessage(packageName, typeName)
+			if msg != nil {
+				typeNames := strings.Split(msg.GetName(), ".")
+				if len(typeNames) == 1 {
+					return packageName, msg.GetName()
+				}
+				return strings.Join(typeNames[1:len(typeNames)-1], "."), typeNames[len(typeNames)-1]
+			}
+		}
+	}
+	return "", ""
+}
+
+func (msg *DescriptorProto) GetFieldDescriptor(fieldName string) *FieldDescriptorProto {
+	for _, field := range msg.GetField() {
+		if field.GetName() == fieldName {
+			return field
+		}
+	}
+	return nil
+}
+
+func (desc *FileDescriptorSet) GetEnum(packageName string, typeName string) *EnumDescriptorProto {
+	for _, file := range desc.GetFile() {
+		if strings.Map(dotToUnderscore, file.GetPackage()) != strings.Map(dotToUnderscore, packageName) {
+			continue
+		}
+		for _, enum := range file.GetEnumType() {
+			if enum.GetName() == typeName {
+				return enum
+			}
+		}
+	}
+	return nil
+}
+
+func (f *FieldDescriptorProto) IsEnum() bool {
+	return *f.Type == FieldDescriptorProto_TYPE_ENUM
+}
+
+func (f *FieldDescriptorProto) IsMessage() bool {
+	return *f.Type == FieldDescriptorProto_TYPE_MESSAGE
+}
+
+func (f *FieldDescriptorProto) IsBytes() bool {
+	return *f.Type == FieldDescriptorProto_TYPE_BYTES
+}
+
+func (f *FieldDescriptorProto) IsRepeated() bool {
+	return f.Label != nil && *f.Label == FieldDescriptorProto_LABEL_REPEATED
+}
+
+func (f *FieldDescriptorProto) IsString() bool {
+	return *f.Type == FieldDescriptorProto_TYPE_STRING
+}
+
+func (f *FieldDescriptorProto) IsBool() bool {
+	return *f.Type == FieldDescriptorProto_TYPE_BOOL
+}
+
+func (f *FieldDescriptorProto) IsRequired() bool {
+	return f.Label != nil && *f.Label == FieldDescriptorProto_LABEL_REQUIRED
+}
+
+func (f *FieldDescriptorProto) IsPacked() bool {
+	return f.Options != nil && f.GetOptions().GetPacked()
+}
+
+func (f *FieldDescriptorProto) IsPacked3() bool {
+	if f.IsRepeated() && f.IsScalar() {
+		if f.Options == nil || f.GetOptions().Packed == nil {
+			return true
+		}
+		return f.Options != nil && f.GetOptions().GetPacked()
+	}
+	return false
+}
+
+func (m *DescriptorProto) HasExtension() bool {
+	return len(m.ExtensionRange) > 0
+}

vendor/github.com/google/uuid/.travis.yml

@@ -0,0 +1,9 @@
+language: go
+
+go:
+  - 1.4.3
+  - 1.5.3
+  - tip
+
+script:
+  - go test -v ./...

vendor/github.com/google/uuid/CONTRIBUTING.md

@@ -0,0 +1,10 @@
+# How to contribute
+
+We definitely welcome patches and contribution to this project!
+
+### Legal requirements
+
+In order to protect both you and ourselves, you will need to sign the
+[Contributor License Agreement](https://cla.developers.google.com/clas).
+
+You may have already signed it for other Google projects.

vendor/github.com/google/uuid/CONTRIBUTORS

@@ -0,0 +1,9 @@
+Paul Borman <borman@google.com>
+bmatsuo
+shawnps
+theory
+jboverfelt
+dsymonds
+cd1
+wallclockbuilder
+dansouza

vendor/github.com/google/uuid/LICENSE

@@ -0,0 +1,27 @@
+Copyright (c) 2009,2014 Google Inc. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/github.com/google/uuid/README.md

@@ -0,0 +1,19 @@
+# uuid ![build status](https://travis-ci.org/google/uuid.svg?branch=master)
+The uuid package generates and inspects UUIDs based on
+[RFC 4122](http://tools.ietf.org/html/rfc4122)
+and DCE 1.1: Authentication and Security Services. 
+
+This package is based on the github.com/pborman/uuid package (previously named
+code.google.com/p/go-uuid).  It differs from these earlier packages in that
+a UUID is a 16 byte array rather than a byte slice.  One loss due to this
+change is the ability to represent an invalid UUID (vs a NIL UUID).
+
+###### Install
+`go get github.com/google/uuid`
+
+###### Documentation 
+[![GoDoc](https://godoc.org/github.com/google/uuid?status.svg)](http://godoc.org/github.com/google/uuid)
+
+Full `go doc` style documentation for the package can be viewed online without
+installing this package by using the GoDoc site here: 
+http://pkg.go.dev/github.com/google/uuid

vendor/github.com/google/uuid/dce.go

@@ -0,0 +1,80 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"encoding/binary"
+	"fmt"
+	"os"
+)
+
+// A Domain represents a Version 2 domain
+type Domain byte
+
+// Domain constants for DCE Security (Version 2) UUIDs.
+const (
+	Person = Domain(0)
+	Group  = Domain(1)
+	Org    = Domain(2)
+)
+
+// NewDCESecurity returns a DCE Security (Version 2) UUID.
+//
+// The domain should be one of Person, Group or Org.
+// On a POSIX system the id should be the users UID for the Person
+// domain and the users GID for the Group.  The meaning of id for
+// the domain Org or on non-POSIX systems is site defined.
+//
+// For a given domain/id pair the same token may be returned for up to
+// 7 minutes and 10 seconds.
+func NewDCESecurity(domain Domain, id uint32) (UUID, error) {
+	uuid, err := NewUUID()
+	if err == nil {
+		uuid[6] = (uuid[6] & 0x0f) | 0x20 // Version 2
+		uuid[9] = byte(domain)
+		binary.BigEndian.PutUint32(uuid[0:], id)
+	}
+	return uuid, err
+}
+
+// NewDCEPerson returns a DCE Security (Version 2) UUID in the person
+// domain with the id returned by os.Getuid.
+//
+//  NewDCESecurity(Person, uint32(os.Getuid()))
+func NewDCEPerson() (UUID, error) {
+	return NewDCESecurity(Person, uint32(os.Getuid()))
+}
+
+// NewDCEGroup returns a DCE Security (Version 2) UUID in the group
+// domain with the id returned by os.Getgid.
+//
+//  NewDCESecurity(Group, uint32(os.Getgid()))
+func NewDCEGroup() (UUID, error) {
+	return NewDCESecurity(Group, uint32(os.Getgid()))
+}
+
+// Domain returns the domain for a Version 2 UUID.  Domains are only defined
+// for Version 2 UUIDs.
+func (uuid UUID) Domain() Domain {
+	return Domain(uuid[9])
+}
+
+// ID returns the id for a Version 2 UUID. IDs are only defined for Version 2
+// UUIDs.
+func (uuid UUID) ID() uint32 {
+	return binary.BigEndian.Uint32(uuid[0:4])
+}
+
+func (d Domain) String() string {
+	switch d {
+	case Person:
+		return "Person"
+	case Group:
+		return "Group"
+	case Org:
+		return "Org"
+	}
+	return fmt.Sprintf("Domain%d", int(d))
+}

vendor/github.com/google/uuid/doc.go

@@ -0,0 +1,12 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package uuid generates and inspects UUIDs.
+//
+// UUIDs are based on RFC 4122 and DCE 1.1: Authentication and Security
+// Services.
+//
+// A UUID is a 16 byte (128 bit) array.  UUIDs may be used as keys to
+// maps or compared directly.
+package uuid

vendor/github.com/google/uuid/go.mod

@@ -0,0 +1 @@
+module github.com/google/uuid

vendor/github.com/google/uuid/hash.go

@@ -0,0 +1,53 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"crypto/md5"
+	"crypto/sha1"
+	"hash"
+)
+
+// Well known namespace IDs and UUIDs
+var (
+	NameSpaceDNS  = Must(Parse("6ba7b810-9dad-11d1-80b4-00c04fd430c8"))
+	NameSpaceURL  = Must(Parse("6ba7b811-9dad-11d1-80b4-00c04fd430c8"))
+	NameSpaceOID  = Must(Parse("6ba7b812-9dad-11d1-80b4-00c04fd430c8"))
+	NameSpaceX500 = Must(Parse("6ba7b814-9dad-11d1-80b4-00c04fd430c8"))
+	Nil           UUID // empty UUID, all zeros
+)
+
+// NewHash returns a new UUID derived from the hash of space concatenated with
+// data generated by h.  The hash should be at least 16 byte in length.  The
+// first 16 bytes of the hash are used to form the UUID.  The version of the
+// UUID will be the lower 4 bits of version.  NewHash is used to implement
+// NewMD5 and NewSHA1.
+func NewHash(h hash.Hash, space UUID, data []byte, version int) UUID {
+	h.Reset()
+	h.Write(space[:])
+	h.Write(data)
+	s := h.Sum(nil)
+	var uuid UUID
+	copy(uuid[:], s)
+	uuid[6] = (uuid[6] & 0x0f) | uint8((version&0xf)<<4)
+	uuid[8] = (uuid[8] & 0x3f) | 0x80 // RFC 4122 variant
+	return uuid
+}
+
+// NewMD5 returns a new MD5 (Version 3) UUID based on the
+// supplied name space and data.  It is the same as calling:
+//
+//  NewHash(md5.New(), space, data, 3)
+func NewMD5(space UUID, data []byte) UUID {
+	return NewHash(md5.New(), space, data, 3)
+}
+
+// NewSHA1 returns a new SHA1 (Version 5) UUID based on the
+// supplied name space and data.  It is the same as calling:
+//
+//  NewHash(sha1.New(), space, data, 5)
+func NewSHA1(space UUID, data []byte) UUID {
+	return NewHash(sha1.New(), space, data, 5)
+}

vendor/github.com/google/uuid/marshal.go

@@ -0,0 +1,38 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import "fmt"
+
+// MarshalText implements encoding.TextMarshaler.
+func (uuid UUID) MarshalText() ([]byte, error) {
+	var js [36]byte
+	encodeHex(js[:], uuid)
+	return js[:], nil
+}
+
+// UnmarshalText implements encoding.TextUnmarshaler.
+func (uuid *UUID) UnmarshalText(data []byte) error {
+	id, err := ParseBytes(data)
+	if err != nil {
+		return err
+	}
+	*uuid = id
+	return nil
+}
+
+// MarshalBinary implements encoding.BinaryMarshaler.
+func (uuid UUID) MarshalBinary() ([]byte, error) {
+	return uuid[:], nil
+}
+
+// UnmarshalBinary implements encoding.BinaryUnmarshaler.
+func (uuid *UUID) UnmarshalBinary(data []byte) error {
+	if len(data) != 16 {
+		return fmt.Errorf("invalid UUID (got %d bytes)", len(data))
+	}
+	copy(uuid[:], data)
+	return nil
+}

vendor/github.com/google/uuid/node.go

@@ -0,0 +1,90 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"sync"
+)
+
+var (
+	nodeMu sync.Mutex
+	ifname string  // name of interface being used
+	nodeID [6]byte // hardware for version 1 UUIDs
+	zeroID [6]byte // nodeID with only 0's
+)
+
+// NodeInterface returns the name of the interface from which the NodeID was
+// derived.  The interface "user" is returned if the NodeID was set by
+// SetNodeID.
+func NodeInterface() string {
+	defer nodeMu.Unlock()
+	nodeMu.Lock()
+	return ifname
+}
+
+// SetNodeInterface selects the hardware address to be used for Version 1 UUIDs.
+// If name is "" then the first usable interface found will be used or a random
+// Node ID will be generated.  If a named interface cannot be found then false
+// is returned.
+//
+// SetNodeInterface never fails when name is "".
+func SetNodeInterface(name string) bool {
+	defer nodeMu.Unlock()
+	nodeMu.Lock()
+	return setNodeInterface(name)
+}
+
+func setNodeInterface(name string) bool {
+	iname, addr := getHardwareInterface(name) // null implementation for js
+	if iname != "" && addr != nil {
+		ifname = iname
+		copy(nodeID[:], addr)
+		return true
+	}
+
+	// We found no interfaces with a valid hardware address.  If name
+	// does not specify a specific interface generate a random Node ID
+	// (section 4.1.6)
+	if name == "" {
+		ifname = "random"
+		randomBits(nodeID[:])
+		return true
+	}
+	return false
+}
+
+// NodeID returns a slice of a copy of the current Node ID, setting the Node ID
+// if not already set.
+func NodeID() []byte {
+	defer nodeMu.Unlock()
+	nodeMu.Lock()
+	if nodeID == zeroID {
+		setNodeInterface("")
+	}
+	nid := nodeID
+	return nid[:]
+}
+
+// SetNodeID sets the Node ID to be used for Version 1 UUIDs.  The first 6 bytes
+// of id are used.  If id is less than 6 bytes then false is returned and the
+// Node ID is not set.
+func SetNodeID(id []byte) bool {
+	if len(id) < 6 {
+		return false
+	}
+	defer nodeMu.Unlock()
+	nodeMu.Lock()
+	copy(nodeID[:], id)
+	ifname = "user"
+	return true
+}
+
+// NodeID returns the 6 byte node id encoded in uuid.  It returns nil if uuid is
+// not valid.  The NodeID is only well defined for version 1 and 2 UUIDs.
+func (uuid UUID) NodeID() []byte {
+	var node [6]byte
+	copy(node[:], uuid[10:])
+	return node[:]
+}

vendor/github.com/google/uuid/node_js.go

@@ -0,0 +1,12 @@
+// Copyright 2017 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build js
+
+package uuid
+
+// getHardwareInterface returns nil values for the JS version of the code.
+// This remvoves the "net" dependency, because it is not used in the browser.
+// Using the "net" library inflates the size of the transpiled JS code by 673k bytes.
+func getHardwareInterface(name string) (string, []byte) { return "", nil }

vendor/github.com/google/uuid/node_net.go

@@ -0,0 +1,33 @@
+// Copyright 2017 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !js
+
+package uuid
+
+import "net"
+
+var interfaces []net.Interface // cached list of interfaces
+
+// getHardwareInterface returns the name and hardware address of interface name.
+// If name is "" then the name and hardware address of one of the system's
+// interfaces is returned.  If no interfaces are found (name does not exist or
+// there are no interfaces) then "", nil is returned.
+//
+// Only addresses of at least 6 bytes are returned.
+func getHardwareInterface(name string) (string, []byte) {
+	if interfaces == nil {
+		var err error
+		interfaces, err = net.Interfaces()
+		if err != nil {
+			return "", nil
+		}
+	}
+	for _, ifs := range interfaces {
+		if len(ifs.HardwareAddr) >= 6 && (name == "" || name == ifs.Name) {
+			return ifs.Name, ifs.HardwareAddr
+		}
+	}
+	return "", nil
+}

vendor/github.com/google/uuid/sql.go

@@ -0,0 +1,59 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"database/sql/driver"
+	"fmt"
+)
+
+// Scan implements sql.Scanner so UUIDs can be read from databases transparently
+// Currently, database types that map to string and []byte are supported. Please
+// consult database-specific driver documentation for matching types.
+func (uuid *UUID) Scan(src interface{}) error {
+	switch src := src.(type) {
+	case nil:
+		return nil
+
+	case string:
+		// if an empty UUID comes from a table, we return a null UUID
+		if src == "" {
+			return nil
+		}
+
+		// see Parse for required string format
+		u, err := Parse(src)
+		if err != nil {
+			return fmt.Errorf("Scan: %v", err)
+		}
+
+		*uuid = u
+
+	case []byte:
+		// if an empty UUID comes from a table, we return a null UUID
+		if len(src) == 0 {
+			return nil
+		}
+
+		// assumes a simple slice of bytes if 16 bytes
+		// otherwise attempts to parse
+		if len(src) != 16 {
+			return uuid.Scan(string(src))
+		}
+		copy((*uuid)[:], src)
+
+	default:
+		return fmt.Errorf("Scan: unable to scan type %T into UUID", src)
+	}
+
+	return nil
+}
+
+// Value implements sql.Valuer so that UUIDs can be written to databases
+// transparently. Currently, UUIDs map to strings. Please consult
+// database-specific driver documentation for matching types.
+func (uuid UUID) Value() (driver.Value, error) {
+	return uuid.String(), nil
+}

vendor/github.com/google/uuid/time.go

@@ -0,0 +1,123 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"encoding/binary"
+	"sync"
+	"time"
+)
+
+// A Time represents a time as the number of 100's of nanoseconds since 15 Oct
+// 1582.
+type Time int64
+
+const (
+	lillian    = 2299160          // Julian day of 15 Oct 1582
+	unix       = 2440587          // Julian day of 1 Jan 1970
+	epoch      = unix - lillian   // Days between epochs
+	g1582      = epoch * 86400    // seconds between epochs
+	g1582ns100 = g1582 * 10000000 // 100s of a nanoseconds between epochs
+)
+
+var (
+	timeMu   sync.Mutex
+	lasttime uint64 // last time we returned
+	clockSeq uint16 // clock sequence for this run
+
+	timeNow = time.Now // for testing
+)
+
+// UnixTime converts t the number of seconds and nanoseconds using the Unix
+// epoch of 1 Jan 1970.
+func (t Time) UnixTime() (sec, nsec int64) {
+	sec = int64(t - g1582ns100)
+	nsec = (sec % 10000000) * 100
+	sec /= 10000000
+	return sec, nsec
+}
+
+// GetTime returns the current Time (100s of nanoseconds since 15 Oct 1582) and
+// clock sequence as well as adjusting the clock sequence as needed.  An error
+// is returned if the current time cannot be determined.
+func GetTime() (Time, uint16, error) {
+	defer timeMu.Unlock()
+	timeMu.Lock()
+	return getTime()
+}
+
+func getTime() (Time, uint16, error) {
+	t := timeNow()
+
+	// If we don't have a clock sequence already, set one.
+	if clockSeq == 0 {
+		setClockSequence(-1)
+	}
+	now := uint64(t.UnixNano()/100) + g1582ns100
+
+	// If time has gone backwards with this clock sequence then we
+	// increment the clock sequence
+	if now <= lasttime {
+		clockSeq = ((clockSeq + 1) & 0x3fff) | 0x8000
+	}
+	lasttime = now
+	return Time(now), clockSeq, nil
+}
+
+// ClockSequence returns the current clock sequence, generating one if not
+// already set.  The clock sequence is only used for Version 1 UUIDs.
+//
+// The uuid package does not use global static storage for the clock sequence or
+// the last time a UUID was generated.  Unless SetClockSequence is used, a new
+// random clock sequence is generated the first time a clock sequence is
+// requested by ClockSequence, GetTime, or NewUUID.  (section 4.2.1.1)
+func ClockSequence() int {
+	defer timeMu.Unlock()
+	timeMu.Lock()
+	return clockSequence()
+}
+
+func clockSequence() int {
+	if clockSeq == 0 {
+		setClockSequence(-1)
+	}
+	return int(clockSeq & 0x3fff)
+}
+
+// SetClockSequence sets the clock sequence to the lower 14 bits of seq.  Setting to
+// -1 causes a new sequence to be generated.
+func SetClockSequence(seq int) {
+	defer timeMu.Unlock()
+	timeMu.Lock()
+	setClockSequence(seq)
+}
+
+func setClockSequence(seq int) {
+	if seq == -1 {
+		var b [2]byte
+		randomBits(b[:]) // clock sequence
+		seq = int(b[0])<<8 | int(b[1])
+	}
+	oldSeq := clockSeq
+	clockSeq = uint16(seq&0x3fff) | 0x8000 // Set our variant
+	if oldSeq != clockSeq {
+		lasttime = 0
+	}
+}
+
+// Time returns the time in 100s of nanoseconds since 15 Oct 1582 encoded in
+// uuid.  The time is only defined for version 1 and 2 UUIDs.
+func (uuid UUID) Time() Time {
+	time := int64(binary.BigEndian.Uint32(uuid[0:4]))
+	time |= int64(binary.BigEndian.Uint16(uuid[4:6])) << 32
+	time |= int64(binary.BigEndian.Uint16(uuid[6:8])&0xfff) << 48
+	return Time(time)
+}
+
+// ClockSequence returns the clock sequence encoded in uuid.
+// The clock sequence is only well defined for version 1 and 2 UUIDs.
+func (uuid UUID) ClockSequence() int {
+	return int(binary.BigEndian.Uint16(uuid[8:10])) & 0x3fff
+}

vendor/github.com/google/uuid/util.go

@@ -0,0 +1,43 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"io"
+)
+
+// randomBits completely fills slice b with random data.
+func randomBits(b []byte) {
+	if _, err := io.ReadFull(rander, b); err != nil {
+		panic(err.Error()) // rand should never fail
+	}
+}
+
+// xvalues returns the value of a byte as a hexadecimal digit or 255.
+var xvalues = [256]byte{
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 255, 255, 255, 255, 255, 255,
+	255, 10, 11, 12, 13, 14, 15, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 10, 11, 12, 13, 14, 15, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+}
+
+// xtob converts hex characters x1 and x2 into a byte.
+func xtob(x1, x2 byte) (byte, bool) {
+	b1 := xvalues[x1]
+	b2 := xvalues[x2]
+	return (b1 << 4) | b2, b1 != 255 && b2 != 255
+}

vendor/github.com/google/uuid/uuid.go

@@ -0,0 +1,245 @@
+// Copyright 2018 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"bytes"
+	"crypto/rand"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"io"
+	"strings"
+)
+
+// A UUID is a 128 bit (16 byte) Universal Unique IDentifier as defined in RFC
+// 4122.
+type UUID [16]byte
+
+// A Version represents a UUID's version.
+type Version byte
+
+// A Variant represents a UUID's variant.
+type Variant byte
+
+// Constants returned by Variant.
+const (
+	Invalid   = Variant(iota) // Invalid UUID
+	RFC4122                   // The variant specified in RFC4122
+	Reserved                  // Reserved, NCS backward compatibility.
+	Microsoft                 // Reserved, Microsoft Corporation backward compatibility.
+	Future                    // Reserved for future definition.
+)
+
+var rander = rand.Reader // random function
+
+// Parse decodes s into a UUID or returns an error.  Both the standard UUID
+// forms of xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx and
+// urn:uuid:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx are decoded as well as the
+// Microsoft encoding {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx} and the raw hex
+// encoding: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.
+func Parse(s string) (UUID, error) {
+	var uuid UUID
+	switch len(s) {
+	// xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+	case 36:
+
+	// urn:uuid:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+	case 36 + 9:
+		if strings.ToLower(s[:9]) != "urn:uuid:" {
+			return uuid, fmt.Errorf("invalid urn prefix: %q", s[:9])
+		}
+		s = s[9:]
+
+	// {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}
+	case 36 + 2:
+		s = s[1:]
+
+	// xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+	case 32:
+		var ok bool
+		for i := range uuid {
+			uuid[i], ok = xtob(s[i*2], s[i*2+1])
+			if !ok {
+				return uuid, errors.New("invalid UUID format")
+			}
+		}
+		return uuid, nil
+	default:
+		return uuid, fmt.Errorf("invalid UUID length: %d", len(s))
+	}
+	// s is now at least 36 bytes long
+	// it must be of the form  xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+	if s[8] != '-' || s[13] != '-' || s[18] != '-' || s[23] != '-' {
+		return uuid, errors.New("invalid UUID format")
+	}
+	for i, x := range [16]int{
+		0, 2, 4, 6,
+		9, 11,
+		14, 16,
+		19, 21,
+		24, 26, 28, 30, 32, 34} {
+		v, ok := xtob(s[x], s[x+1])
+		if !ok {
+			return uuid, errors.New("invalid UUID format")
+		}
+		uuid[i] = v
+	}
+	return uuid, nil
+}
+
+// ParseBytes is like Parse, except it parses a byte slice instead of a string.
+func ParseBytes(b []byte) (UUID, error) {
+	var uuid UUID
+	switch len(b) {
+	case 36: // xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+	case 36 + 9: // urn:uuid:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+		if !bytes.Equal(bytes.ToLower(b[:9]), []byte("urn:uuid:")) {
+			return uuid, fmt.Errorf("invalid urn prefix: %q", b[:9])
+		}
+		b = b[9:]
+	case 36 + 2: // {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}
+		b = b[1:]
+	case 32: // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+		var ok bool
+		for i := 0; i < 32; i += 2 {
+			uuid[i/2], ok = xtob(b[i], b[i+1])
+			if !ok {
+				return uuid, errors.New("invalid UUID format")
+			}
+		}
+		return uuid, nil
+	default:
+		return uuid, fmt.Errorf("invalid UUID length: %d", len(b))
+	}
+	// s is now at least 36 bytes long
+	// it must be of the form  xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+	if b[8] != '-' || b[13] != '-' || b[18] != '-' || b[23] != '-' {
+		return uuid, errors.New("invalid UUID format")
+	}
+	for i, x := range [16]int{
+		0, 2, 4, 6,
+		9, 11,
+		14, 16,
+		19, 21,
+		24, 26, 28, 30, 32, 34} {
+		v, ok := xtob(b[x], b[x+1])
+		if !ok {
+			return uuid, errors.New("invalid UUID format")
+		}
+		uuid[i] = v
+	}
+	return uuid, nil
+}
+
+// MustParse is like Parse but panics if the string cannot be parsed.
+// It simplifies safe initialization of global variables holding compiled UUIDs.
+func MustParse(s string) UUID {
+	uuid, err := Parse(s)
+	if err != nil {
+		panic(`uuid: Parse(` + s + `): ` + err.Error())
+	}
+	return uuid
+}
+
+// FromBytes creates a new UUID from a byte slice. Returns an error if the slice
+// does not have a length of 16. The bytes are copied from the slice.
+func FromBytes(b []byte) (uuid UUID, err error) {
+	err = uuid.UnmarshalBinary(b)
+	return uuid, err
+}
+
+// Must returns uuid if err is nil and panics otherwise.
+func Must(uuid UUID, err error) UUID {
+	if err != nil {
+		panic(err)
+	}
+	return uuid
+}
+
+// String returns the string form of uuid, xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+// , or "" if uuid is invalid.
+func (uuid UUID) String() string {
+	var buf [36]byte
+	encodeHex(buf[:], uuid)
+	return string(buf[:])
+}
+
+// URN returns the RFC 2141 URN form of uuid,
+// urn:uuid:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx,  or "" if uuid is invalid.
+func (uuid UUID) URN() string {
+	var buf [36 + 9]byte
+	copy(buf[:], "urn:uuid:")
+	encodeHex(buf[9:], uuid)
+	return string(buf[:])
+}
+
+func encodeHex(dst []byte, uuid UUID) {
+	hex.Encode(dst, uuid[:4])
+	dst[8] = '-'
+	hex.Encode(dst[9:13], uuid[4:6])
+	dst[13] = '-'
+	hex.Encode(dst[14:18], uuid[6:8])
+	dst[18] = '-'
+	hex.Encode(dst[19:23], uuid[8:10])
+	dst[23] = '-'
+	hex.Encode(dst[24:], uuid[10:])
+}
+
+// Variant returns the variant encoded in uuid.
+func (uuid UUID) Variant() Variant {
+	switch {
+	case (uuid[8] & 0xc0) == 0x80:
+		return RFC4122
+	case (uuid[8] & 0xe0) == 0xc0:
+		return Microsoft
+	case (uuid[8] & 0xe0) == 0xe0:
+		return Future
+	default:
+		return Reserved
+	}
+}
+
+// Version returns the version of uuid.
+func (uuid UUID) Version() Version {
+	return Version(uuid[6] >> 4)
+}
+
+func (v Version) String() string {
+	if v > 15 {
+		return fmt.Sprintf("BAD_VERSION_%d", v)
+	}
+	return fmt.Sprintf("VERSION_%d", v)
+}
+
+func (v Variant) String() string {
+	switch v {
+	case RFC4122:
+		return "RFC4122"
+	case Reserved:
+		return "Reserved"
+	case Microsoft:
+		return "Microsoft"
+	case Future:
+		return "Future"
+	case Invalid:
+		return "Invalid"
+	}
+	return fmt.Sprintf("BadVariant%d", int(v))
+}
+
+// SetRand sets the random number generator to r, which implements io.Reader.
+// If r.Read returns an error when the package requests random data then
+// a panic will be issued.
+//
+// Calling SetRand with nil sets the random number generator to the default
+// generator.
+func SetRand(r io.Reader) {
+	if r == nil {
+		rander = rand.Reader
+		return
+	}
+	rander = r
+}

vendor/github.com/google/uuid/version1.go

@@ -0,0 +1,44 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"encoding/binary"
+)
+
+// NewUUID returns a Version 1 UUID based on the current NodeID and clock
+// sequence, and the current time.  If the NodeID has not been set by SetNodeID
+// or SetNodeInterface then it will be set automatically.  If the NodeID cannot
+// be set NewUUID returns nil.  If clock sequence has not been set by
+// SetClockSequence then it will be set automatically.  If GetTime fails to
+// return the current NewUUID returns nil and an error.
+//
+// In most cases, New should be used.
+func NewUUID() (UUID, error) {
+	var uuid UUID
+	now, seq, err := GetTime()
+	if err != nil {
+		return uuid, err
+	}
+
+	timeLow := uint32(now & 0xffffffff)
+	timeMid := uint16((now >> 32) & 0xffff)
+	timeHi := uint16((now >> 48) & 0x0fff)
+	timeHi |= 0x1000 // Version 1
+
+	binary.BigEndian.PutUint32(uuid[0:], timeLow)
+	binary.BigEndian.PutUint16(uuid[4:], timeMid)
+	binary.BigEndian.PutUint16(uuid[6:], timeHi)
+	binary.BigEndian.PutUint16(uuid[8:], seq)
+
+	nodeMu.Lock()
+	if nodeID == zeroID {
+		setNodeInterface("")
+	}
+	copy(uuid[10:], nodeID[:])
+	nodeMu.Unlock()
+
+	return uuid, nil
+}

vendor/github.com/google/uuid/version4.go

@@ -0,0 +1,43 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import "io"
+
+// New creates a new random UUID or panics.  New is equivalent to
+// the expression
+//
+//    uuid.Must(uuid.NewRandom())
+func New() UUID {
+	return Must(NewRandom())
+}
+
+// NewRandom returns a Random (Version 4) UUID.
+//
+// The strength of the UUIDs is based on the strength of the crypto/rand
+// package.
+//
+// A note about uniqueness derived from the UUID Wikipedia entry:
+//
+//  Randomly generated UUIDs have 122 random bits.  One's annual risk of being
+//  hit by a meteorite is estimated to be one chance in 17 billion, that
+//  means the probability is about 0.00000000006 (6 × 10−11),
+//  equivalent to the odds of creating a few tens of trillions of UUIDs in a
+//  year and having one duplicate.
+func NewRandom() (UUID, error) {
+	return NewRandomFromReader(rander)
+}
+
+// NewRandomFromReader returns a UUID based on bytes read from a given io.Reader.
+func NewRandomFromReader(r io.Reader) (UUID, error) {
+	var uuid UUID
+	_, err := io.ReadFull(r, uuid[:])
+	if err != nil {
+		return Nil, err
+	}
+	uuid[6] = (uuid[6] & 0x0f) | 0x40 // Version 4
+	uuid[8] = (uuid[8] & 0x3f) | 0x80 // Variant is 10
+	return uuid, nil
+}

vendor/github.com/grpc-ecosystem/go-grpc-prometheus/.gitignore

@@ -0,0 +1,201 @@
+#vendor
+vendor/
+
+# Created by .ignore support plugin (hsz.mobi)
+coverage.txt
+### Go template
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+*.test
+*.prof
+### Windows template
+# Windows image file caches
+Thumbs.db
+ehthumbs.db
+
+# Folder config file
+Desktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+### Kate template
+# Swap Files #
+.*.kate-swp
+.swp.*
+### SublimeText template
+# cache files for sublime text
+*.tmlanguage.cache
+*.tmPreferences.cache
+*.stTheme.cache
+
+# workspace files are user-specific
+*.sublime-workspace
+
+# project files should be checked into the repository, unless a significant
+# proportion of contributors will probably not be using SublimeText
+# *.sublime-project
+
+# sftp configuration file
+sftp-config.json
+### Linux template
+*~
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+### JetBrains template
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and Webstorm
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff:
+.idea
+.idea/tasks.xml
+.idea/dictionaries
+.idea/vcs.xml
+.idea/jsLibraryMappings.xml
+
+# Sensitive or high-churn files:
+.idea/dataSources.ids
+.idea/dataSources.xml
+.idea/dataSources.local.xml
+.idea/sqlDataSources.xml
+.idea/dynamic.xml
+.idea/uiDesigner.xml
+
+# Gradle:
+.idea/gradle.xml
+.idea/libraries
+
+# Mongo Explorer plugin:
+.idea/mongoSettings.xml
+
+## File-based project format:
+*.iws
+
+## Plugin-specific files:
+
+# IntelliJ
+/out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+### Xcode template
+# Xcode
+#
+# gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore
+
+## Build generated
+build/
+DerivedData/
+
+## Various settings
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+xcuserdata/
+
+## Other
+*.moved-aside
+*.xccheckout
+*.xcscmblueprint
+### Eclipse template
+
+.metadata
+bin/
+tmp/
+*.tmp
+*.bak
+*.swp
+*~.nib
+local.properties
+.settings/
+.loadpath
+.recommenders
+
+# Eclipse Core
+.project
+
+# External tool builders
+.externalToolBuilders/
+
+# Locally stored "Eclipse launch configurations"
+*.launch
+
+# PyDev specific (Python IDE for Eclipse)
+*.pydevproject
+
+# CDT-specific (C/C++ Development Tooling)
+.cproject
+
+# JDT-specific (Eclipse Java Development Tools)
+.classpath
+
+# Java annotation processor (APT)
+.factorypath
+
+# PDT-specific (PHP Development Tools)
+.buildpath
+
+# sbteclipse plugin
+.target
+
+# Tern plugin
+.tern-project
+
+# TeXlipse plugin
+.texlipse
+
+# STS (Spring Tool Suite)
+.springBeans
+
+# Code Recommenders
+.recommenders/
+

vendor/github.com/grpc-ecosystem/go-grpc-prometheus/.travis.yml

@@ -0,0 +1,25 @@
+sudo: false
+language: go
+# * github.com/grpc/grpc-go still supports go1.6
+#   - When we drop support for go1.6 we can remove golang.org/x/net/context
+#     below as it is part of the Go std library since go1.7
+# * github.com/prometheus/client_golang already requires at least go1.7 since
+#   September 2017
+go:
+  - 1.6.x
+  - 1.7.x
+  - 1.8.x
+  - 1.9.x
+  - 1.10.x
+  - master
+
+install:
+  - go get github.com/prometheus/client_golang/prometheus
+  - go get google.golang.org/grpc
+  - go get golang.org/x/net/context
+  - go get github.com/stretchr/testify
+script:
+ - make test 
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)

vendor/github.com/grpc-ecosystem/go-grpc-prometheus/CHANGELOG.md

@@ -0,0 +1,24 @@
+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [1.2.0](https://github.com/grpc-ecosystem/go-grpc-prometheus/releases/tag/v1.2.0) - 2018-06-04
+
+### Added
+
+* Provide metrics object as `prometheus.Collector`, for conventional metric registration.
+* Support non-default/global Prometheus registry.
+* Allow configuring counters with `prometheus.CounterOpts`.
+
+### Changed
+
+* Remove usage of deprecated `grpc.Code()`.
+* Remove usage of deprecated `grpc.Errorf` and replace with `status.Errorf`.
+
+---
+
+This changelog was started with version `v1.2.0`, for earlier versions refer to the respective [GitHub releases](https://github.com/grpc-ecosystem/go-grpc-prometheus/releases).

vendor/github.com/grpc-ecosystem/go-grpc-prometheus/LICENSE

@@ -0,0 +1,201 @@
+                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

vendor/github.com/grpc-ecosystem/go-grpc-prometheus/README.md

@@ -0,0 +1,247 @@
+# Go gRPC Interceptors for Prometheus monitoring 
+
+[![Travis Build](https://travis-ci.org/grpc-ecosystem/go-grpc-prometheus.svg)](https://travis-ci.org/grpc-ecosystem/go-grpc-prometheus)
+[![Go Report Card](https://goreportcard.com/badge/github.com/grpc-ecosystem/go-grpc-prometheus)](http://goreportcard.com/report/grpc-ecosystem/go-grpc-prometheus)
+[![GoDoc](http://img.shields.io/badge/GoDoc-Reference-blue.svg)](https://godoc.org/github.com/grpc-ecosystem/go-grpc-prometheus)
+[![SourceGraph](https://sourcegraph.com/github.com/grpc-ecosystem/go-grpc-prometheus/-/badge.svg)](https://sourcegraph.com/github.com/grpc-ecosystem/go-grpc-prometheus/?badge)
+[![codecov](https://codecov.io/gh/grpc-ecosystem/go-grpc-prometheus/branch/master/graph/badge.svg)](https://codecov.io/gh/grpc-ecosystem/go-grpc-prometheus)
+[![Apache 2.0 License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](LICENSE)
+
+[Prometheus](https://prometheus.io/) monitoring for your [gRPC Go](https://github.com/grpc/grpc-go) servers and clients.
+
+A sister implementation for [gRPC Java](https://github.com/grpc/grpc-java) (same metrics, same semantics) is in [grpc-ecosystem/java-grpc-prometheus](https://github.com/grpc-ecosystem/java-grpc-prometheus).
+
+## Interceptors
+
+[gRPC Go](https://github.com/grpc/grpc-go) recently acquired support for Interceptors, i.e. middleware that is executed
+by a gRPC Server before the request is passed onto the user's application logic. It is a perfect way to implement
+common patterns: auth, logging and... monitoring.
+
+To use Interceptors in chains, please see [`go-grpc-middleware`](https://github.com/mwitkow/go-grpc-middleware).
+
+## Usage
+
+There are two types of interceptors: client-side and server-side. This package provides monitoring Interceptors for both.
+
+### Server-side
+
+```go
+import "github.com/grpc-ecosystem/go-grpc-prometheus"
+...
+    // Initialize your gRPC server's interceptor.
+    myServer := grpc.NewServer(
+        grpc.StreamInterceptor(grpc_prometheus.StreamServerInterceptor),
+        grpc.UnaryInterceptor(grpc_prometheus.UnaryServerInterceptor),
+    )
+    // Register your gRPC service implementations.
+    myservice.RegisterMyServiceServer(s.server, &myServiceImpl{})
+    // After all your registrations, make sure all of the Prometheus metrics are initialized.
+    grpc_prometheus.Register(myServer)
+    // Register Prometheus metrics handler.    
+    http.Handle("/metrics", promhttp.Handler())
+...
+```
+
+### Client-side
+
+```go
+import "github.com/grpc-ecosystem/go-grpc-prometheus"
+...
+   clientConn, err = grpc.Dial(
+       address,
+		   grpc.WithUnaryInterceptor(grpc_prometheus.UnaryClientInterceptor),
+		   grpc.WithStreamInterceptor(grpc_prometheus.StreamClientInterceptor)
+   )
+   client = pb_testproto.NewTestServiceClient(clientConn)
+   resp, err := client.PingEmpty(s.ctx, &myservice.Request{Msg: "hello"})
+...
+```
+
+# Metrics
+
+## Labels
+
+All server-side metrics start with `grpc_server` as Prometheus subsystem name. All client-side metrics start with `grpc_client`. Both of them have mirror-concepts. Similarly all methods
+contain the same rich labels:
+  
+  * `grpc_service` - the [gRPC service](http://www.grpc.io/docs/#defining-a-service) name, which is the combination of protobuf `package` and
+    the `grpc_service` section name. E.g. for `package = mwitkow.testproto` and 
+     `service TestService` the label will be `grpc_service="mwitkow.testproto.TestService"`
+  * `grpc_method` - the name of the method called on the gRPC service. E.g.  
+    `grpc_method="Ping"`
+  * `grpc_type` - the gRPC [type of request](http://www.grpc.io/docs/guides/concepts.html#rpc-life-cycle). 
+    Differentiating between the two is important especially for latency measurements.
+
+     - `unary` is single request, single response RPC
+     - `client_stream` is a multi-request, single response RPC
+     - `server_stream` is a single request, multi-response RPC
+     - `bidi_stream` is a multi-request, multi-response RPC
+    
+
+Additionally for completed RPCs, the following labels are used:
+
+  * `grpc_code` - the human-readable [gRPC status code](https://github.com/grpc/grpc-go/blob/master/codes/codes.go).
+    The list of all statuses is to long, but here are some common ones:
+      
+      - `OK` - means the RPC was successful
+      - `IllegalArgument` - RPC contained bad values
+      - `Internal` - server-side error not disclosed to the clients
+      
+## Counters
+
+The counters and their up to date documentation is in [server_reporter.go](server_reporter.go) and [client_reporter.go](client_reporter.go) 
+the respective Prometheus handler (usually `/metrics`). 
+
+For the purpose of this documentation we will only discuss `grpc_server` metrics. The `grpc_client` ones contain mirror concepts.
+
+For simplicity, let's assume we're tracking a single server-side RPC call of [`mwitkow.testproto.TestService`](examples/testproto/test.proto),
+calling the method `PingList`. The call succeeds and returns 20 messages in the stream.
+
+First, immediately after the server receives the call it will increment the
+`grpc_server_started_total` and start the handling time clock (if histograms are enabled). 
+
+```jsoniq
+grpc_server_started_total{grpc_method="PingList",grpc_service="mwitkow.testproto.TestService",grpc_type="server_stream"} 1
+```
+
+Then the user logic gets invoked. It receives one message from the client containing the request 
+(it's a `server_stream`):
+
+```jsoniq
+grpc_server_msg_received_total{grpc_method="PingList",grpc_service="mwitkow.testproto.TestService",grpc_type="server_stream"} 1
+```
+
+The user logic may return an error, or send multiple messages back to the client. In this case, on 
+each of the 20 messages sent back, a counter will be incremented:
+
+```jsoniq
+grpc_server_msg_sent_total{grpc_method="PingList",grpc_service="mwitkow.testproto.TestService",grpc_type="server_stream"} 20
+```
+
+After the call completes, its status (`OK` or other [gRPC status code](https://github.com/grpc/grpc-go/blob/master/codes/codes.go)) 
+and the relevant call labels increment the `grpc_server_handled_total` counter.
+
+```jsoniq
+grpc_server_handled_total{grpc_code="OK",grpc_method="PingList",grpc_service="mwitkow.testproto.TestService",grpc_type="server_stream"} 1
+```
+
+## Histograms
+
+[Prometheus histograms](https://prometheus.io/docs/concepts/metric_types/#histogram) are a great way
+to measure latency distributions of your RPCs. However, since it is bad practice to have metrics
+of [high cardinality](https://prometheus.io/docs/practices/instrumentation/#do-not-overuse-labels)
+the latency monitoring metrics are disabled by default. To enable them please call the following
+in your server initialization code:
+
+```jsoniq
+grpc_prometheus.EnableHandlingTimeHistogram()
+```
+
+After the call completes, its handling time will be recorded in a [Prometheus histogram](https://prometheus.io/docs/concepts/metric_types/#histogram)
+variable `grpc_server_handling_seconds`. The histogram variable contains three sub-metrics:
+
+ * `grpc_server_handling_seconds_count` - the count of all completed RPCs by status and method 
+ * `grpc_server_handling_seconds_sum` - cumulative time of RPCs by status and method, useful for 
+   calculating average handling times
+ * `grpc_server_handling_seconds_bucket` - contains the counts of RPCs by status and method in respective
+   handling-time buckets. These buckets can be used by Prometheus to estimate SLAs (see [here](https://prometheus.io/docs/practices/histograms/))
+
+The counter values will look as follows:
+
+```jsoniq
+grpc_server_handling_seconds_bucket{grpc_code="OK",grpc_method="PingList",grpc_service="mwitkow.testproto.TestService",grpc_type="server_stream",le="0.005"} 1
+grpc_server_handling_seconds_bucket{grpc_code="OK",grpc_method="PingList",grpc_service="mwitkow.testproto.TestService",grpc_type="server_stream",le="0.01"} 1
+grpc_server_handling_seconds_bucket{grpc_code="OK",grpc_method="PingList",grpc_service="mwitkow.testproto.TestService",grpc_type="server_stream",le="0.025"} 1
+grpc_server_handling_seconds_bucket{grpc_code="OK",grpc_method="PingList",grpc_service="mwitkow.testproto.TestService",grpc_type="server_stream",le="0.05"} 1
+grpc_server_handling_seconds_bucket{grpc_code="OK",grpc_method="PingList",grpc_service="mwitkow.testproto.TestService",grpc_type="server_stream",le="0.1"} 1
+grpc_server_handling_seconds_bucket{grpc_code="OK",grpc_method="PingList",grpc_service="mwitkow.testproto.TestService",grpc_type="server_stream",le="0.25"} 1
+grpc_server_handling_seconds_bucket{grpc_code="OK",grpc_method="PingList",grpc_service="mwitkow.testproto.TestService",grpc_type="server_stream",le="0.5"} 1
+grpc_server_handling_seconds_bucket{grpc_code="OK",grpc_method="PingList",grpc_service="mwitkow.testproto.TestService",grpc_type="server_stream",le="1"} 1
+grpc_server_handling_seconds_bucket{grpc_code="OK",grpc_method="PingList",grpc_service="mwitkow.testproto.TestService",grpc_type="server_stream",le="2.5"} 1
+grpc_server_handling_seconds_bucket{grpc_code="OK",grpc_method="PingList",grpc_service="mwitkow.testproto.TestService",grpc_type="server_stream",le="5"} 1
+grpc_server_handling_seconds_bucket{grpc_code="OK",grpc_method="PingList",grpc_service="mwitkow.testproto.TestService",grpc_type="server_stream",le="10"} 1
+grpc_server_handling_seconds_bucket{grpc_code="OK",grpc_method="PingList",grpc_service="mwitkow.testproto.TestService",grpc_type="server_stream",le="+Inf"} 1
+grpc_server_handling_seconds_sum{grpc_code="OK",grpc_method="PingList",grpc_service="mwitkow.testproto.TestService",grpc_type="server_stream"} 0.0003866430000000001
+grpc_server_handling_seconds_count{grpc_code="OK",grpc_method="PingList",grpc_service="mwitkow.testproto.TestService",grpc_type="server_stream"} 1
+```
+
+
+## Useful query examples
+
+Prometheus philosophy is to provide raw metrics to the monitoring system, and
+let the aggregations be handled there. The verbosity of above metrics make it possible to have that
+flexibility. Here's a couple of useful monitoring queries:
+
+
+### request inbound rate
+```jsoniq
+sum(rate(grpc_server_started_total{job="foo"}[1m])) by (grpc_service)
+```
+For `job="foo"` (common label to differentiate between Prometheus monitoring targets), calculate the
+rate of requests per second (1 minute window) for each gRPC `grpc_service` that the job has. Please note
+how the `grpc_method` is being omitted here: all methods of a given gRPC service will be summed together.
+
+### unary request error rate
+```jsoniq
+sum(rate(grpc_server_handled_total{job="foo",grpc_type="unary",grpc_code!="OK"}[1m])) by (grpc_service)
+```
+For `job="foo"`, calculate the per-`grpc_service` rate of `unary` (1:1) RPCs that failed, i.e. the 
+ones that didn't finish with `OK` code.
+
+### unary request error percentage
+```jsoniq
+sum(rate(grpc_server_handled_total{job="foo",grpc_type="unary",grpc_code!="OK"}[1m])) by (grpc_service)
+ / 
+sum(rate(grpc_server_started_total{job="foo",grpc_type="unary"}[1m])) by (grpc_service)
+ * 100.0
+```
+For `job="foo"`, calculate the percentage of failed requests by service. It's easy to notice that
+this is a combination of the two above examples. This is an example of a query you would like to
+[alert on](https://prometheus.io/docs/alerting/rules/) in your system for SLA violations, e.g.
+"no more than 1% requests should fail".
+
+### average response stream size
+```jsoniq
+sum(rate(grpc_server_msg_sent_total{job="foo",grpc_type="server_stream"}[10m])) by (grpc_service)
+ /
+sum(rate(grpc_server_started_total{job="foo",grpc_type="server_stream"}[10m])) by (grpc_service)
+```
+For `job="foo"` what is the `grpc_service`-wide `10m` average of messages returned for all `
+server_stream` RPCs. This allows you to track the stream sizes returned by your system, e.g. allows 
+you to track when clients started to send "wide" queries that ret
+Note the divisor is the number of started RPCs, in order to account for in-flight requests.
+
+### 99%-tile latency of unary requests
+```jsoniq
+histogram_quantile(0.99, 
+  sum(rate(grpc_server_handling_seconds_bucket{job="foo",grpc_type="unary"}[5m])) by (grpc_service,le)
+)
+```
+For `job="foo"`, returns an 99%-tile [quantile estimation](https://prometheus.io/docs/practices/histograms/#quantiles)
+of the handling time of RPCs per service. Please note the `5m` rate, this means that the quantile
+estimation will take samples in a rolling `5m` window. When combined with other quantiles
+(e.g. 50%, 90%), this query gives you tremendous insight into the responsiveness of your system 
+(e.g. impact of caching).
+
+### percentage of slow unary queries (>250ms)
+```jsoniq
+100.0 - (
+sum(rate(grpc_server_handling_seconds_bucket{job="foo",grpc_type="unary",le="0.25"}[5m])) by (grpc_service)
+ / 
+sum(rate(grpc_server_handling_seconds_count{job="foo",grpc_type="unary"}[5m])) by (grpc_service)
+) * 100.0
+```
+For `job="foo"` calculate the by-`grpc_service` fraction of slow requests that took longer than `0.25` 
+seconds. This query is relatively complex, since the Prometheus aggregations use `le` (less or equal)
+buckets, meaning that counting "fast" requests fractions is easier. However, simple maths helps.
+This is an example of a query you would like to alert on in your system for SLA violations, 
+e.g. "less than 1% of requests are slower than 250ms".
+
+
+## Status
+
+This code has been used since August 2015 as the basis for monitoring of *production* gRPC micro services  at [Improbable](https://improbable.io).
+
+## License
+
+`go-grpc-prometheus` is released under the Apache 2.0 license. See the [LICENSE](LICENSE) file for details.

vendor/github.com/grpc-ecosystem/go-grpc-prometheus/client.go

@@ -0,0 +1,39 @@
+// Copyright 2016 Michal Witkowski. All Rights Reserved.
+// See LICENSE for licensing terms.
+
+// gRPC Prometheus monitoring interceptors for client-side gRPC.
+
+package grpc_prometheus
+
+import (
+	prom "github.com/prometheus/client_golang/prometheus"
+)
+
+var (
+	// DefaultClientMetrics is the default instance of ClientMetrics. It is
+	// intended to be used in conjunction the default Prometheus metrics
+	// registry.
+	DefaultClientMetrics = NewClientMetrics()
+
+	// UnaryClientInterceptor is a gRPC client-side interceptor that provides Prometheus monitoring for Unary RPCs.
+	UnaryClientInterceptor = DefaultClientMetrics.UnaryClientInterceptor()
+
+	// StreamClientInterceptor is a gRPC client-side interceptor that provides Prometheus monitoring for Streaming RPCs.
+	StreamClientInterceptor = DefaultClientMetrics.StreamClientInterceptor()
+)
+
+func init() {
+	prom.MustRegister(DefaultClientMetrics.clientStartedCounter)
+	prom.MustRegister(DefaultClientMetrics.clientHandledCounter)
+	prom.MustRegister(DefaultClientMetrics.clientStreamMsgReceived)
+	prom.MustRegister(DefaultClientMetrics.clientStreamMsgSent)
+}
+
+// EnableClientHandlingTimeHistogram turns on recording of handling time of
+// RPCs. Histogram metrics can be very expensive for Prometheus to retain and
+// query. This function acts on the DefaultClientMetrics variable and the
+// default Prometheus metrics registry.
+func EnableClientHandlingTimeHistogram(opts ...HistogramOption) {
+	DefaultClientMetrics.EnableClientHandlingTimeHistogram(opts...)
+	prom.Register(DefaultClientMetrics.clientHandledHistogram)
+}

vendor/github.com/grpc-ecosystem/go-grpc-prometheus/client_metrics.go

@@ -0,0 +1,170 @@
+package grpc_prometheus
+
+import (
+	"io"
+
+	prom "github.com/prometheus/client_golang/prometheus"
+	"golang.org/x/net/context"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+// ClientMetrics represents a collection of metrics to be registered on a
+// Prometheus metrics registry for a gRPC client.
+type ClientMetrics struct {
+	clientStartedCounter          *prom.CounterVec
+	clientHandledCounter          *prom.CounterVec
+	clientStreamMsgReceived       *prom.CounterVec
+	clientStreamMsgSent           *prom.CounterVec
+	clientHandledHistogramEnabled bool
+	clientHandledHistogramOpts    prom.HistogramOpts
+	clientHandledHistogram        *prom.HistogramVec
+}
+
+// NewClientMetrics returns a ClientMetrics object. Use a new instance of
+// ClientMetrics when not using the default Prometheus metrics registry, for
+// example when wanting to control which metrics are added to a registry as
+// opposed to automatically adding metrics via init functions.
+func NewClientMetrics(counterOpts ...CounterOption) *ClientMetrics {
+	opts := counterOptions(counterOpts)
+	return &ClientMetrics{
+		clientStartedCounter: prom.NewCounterVec(
+			opts.apply(prom.CounterOpts{
+				Name: "grpc_client_started_total",
+				Help: "Total number of RPCs started on the client.",
+			}), []string{"grpc_type", "grpc_service", "grpc_method"}),
+
+		clientHandledCounter: prom.NewCounterVec(
+			opts.apply(prom.CounterOpts{
+				Name: "grpc_client_handled_total",
+				Help: "Total number of RPCs completed by the client, regardless of success or failure.",
+			}), []string{"grpc_type", "grpc_service", "grpc_method", "grpc_code"}),
+
+		clientStreamMsgReceived: prom.NewCounterVec(
+			opts.apply(prom.CounterOpts{
+				Name: "grpc_client_msg_received_total",
+				Help: "Total number of RPC stream messages received by the client.",
+			}), []string{"grpc_type", "grpc_service", "grpc_method"}),
+
+		clientStreamMsgSent: prom.NewCounterVec(
+			opts.apply(prom.CounterOpts{
+				Name: "grpc_client_msg_sent_total",
+				Help: "Total number of gRPC stream messages sent by the client.",
+			}), []string{"grpc_type", "grpc_service", "grpc_method"}),
+
+		clientHandledHistogramEnabled: false,
+		clientHandledHistogramOpts: prom.HistogramOpts{
+			Name:    "grpc_client_handling_seconds",
+			Help:    "Histogram of response latency (seconds) of the gRPC until it is finished by the application.",
+			Buckets: prom.DefBuckets,
+		},
+		clientHandledHistogram: nil,
+	}
+}
+
+// Describe sends the super-set of all possible descriptors of metrics
+// collected by this Collector to the provided channel and returns once
+// the last descriptor has been sent.
+func (m *ClientMetrics) Describe(ch chan<- *prom.Desc) {
+	m.clientStartedCounter.Describe(ch)
+	m.clientHandledCounter.Describe(ch)
+	m.clientStreamMsgReceived.Describe(ch)
+	m.clientStreamMsgSent.Describe(ch)
+	if m.clientHandledHistogramEnabled {
+		m.clientHandledHistogram.Describe(ch)
+	}
+}
+
+// Collect is called by the Prometheus registry when collecting
+// metrics. The implementation sends each collected metric via the
+// provided channel and returns once the last metric has been sent.
+func (m *ClientMetrics) Collect(ch chan<- prom.Metric) {
+	m.clientStartedCounter.Collect(ch)
+	m.clientHandledCounter.Collect(ch)
+	m.clientStreamMsgReceived.Collect(ch)
+	m.clientStreamMsgSent.Collect(ch)
+	if m.clientHandledHistogramEnabled {
+		m.clientHandledHistogram.Collect(ch)
+	}
+}
+
+// EnableClientHandlingTimeHistogram turns on recording of handling time of RPCs.
+// Histogram metrics can be very expensive for Prometheus to retain and query.
+func (m *ClientMetrics) EnableClientHandlingTimeHistogram(opts ...HistogramOption) {
+	for _, o := range opts {
+		o(&m.clientHandledHistogramOpts)
+	}
+	if !m.clientHandledHistogramEnabled {
+		m.clientHandledHistogram = prom.NewHistogramVec(
+			m.clientHandledHistogramOpts,
+			[]string{"grpc_type", "grpc_service", "grpc_method"},
+		)
+	}
+	m.clientHandledHistogramEnabled = true
+}
+
+// UnaryClientInterceptor is a gRPC client-side interceptor that provides Prometheus monitoring for Unary RPCs.
+func (m *ClientMetrics) UnaryClientInterceptor() func(ctx context.Context, method string, req, reply interface{}, cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
+	return func(ctx context.Context, method string, req, reply interface{}, cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
+		monitor := newClientReporter(m, Unary, method)
+		monitor.SentMessage()
+		err := invoker(ctx, method, req, reply, cc, opts...)
+		if err != nil {
+			monitor.ReceivedMessage()
+		}
+		st, _ := status.FromError(err)
+		monitor.Handled(st.Code())
+		return err
+	}
+}
+
+// StreamClientInterceptor is a gRPC client-side interceptor that provides Prometheus monitoring for Streaming RPCs.
+func (m *ClientMetrics) StreamClientInterceptor() func(ctx context.Context, desc *grpc.StreamDesc, cc *grpc.ClientConn, method string, streamer grpc.Streamer, opts ...grpc.CallOption) (grpc.ClientStream, error) {
+	return func(ctx context.Context, desc *grpc.StreamDesc, cc *grpc.ClientConn, method string, streamer grpc.Streamer, opts ...grpc.CallOption) (grpc.ClientStream, error) {
+		monitor := newClientReporter(m, clientStreamType(desc), method)
+		clientStream, err := streamer(ctx, desc, cc, method, opts...)
+		if err != nil {
+			st, _ := status.FromError(err)
+			monitor.Handled(st.Code())
+			return nil, err
+		}
+		return &monitoredClientStream{clientStream, monitor}, nil
+	}
+}
+
+func clientStreamType(desc *grpc.StreamDesc) grpcType {
+	if desc.ClientStreams && !desc.ServerStreams {
+		return ClientStream
+	} else if !desc.ClientStreams && desc.ServerStreams {
+		return ServerStream
+	}
+	return BidiStream
+}
+
+// monitoredClientStream wraps grpc.ClientStream allowing each Sent/Recv of message to increment counters.
+type monitoredClientStream struct {
+	grpc.ClientStream
+	monitor *clientReporter
+}
+
+func (s *monitoredClientStream) SendMsg(m interface{}) error {
+	err := s.ClientStream.SendMsg(m)
+	if err == nil {
+		s.monitor.SentMessage()
+	}
+	return err
+}
+
+func (s *monitoredClientStream) RecvMsg(m interface{}) error {
+	err := s.ClientStream.RecvMsg(m)
+	if err == nil {
+		s.monitor.ReceivedMessage()
+	} else if err == io.EOF {
+		s.monitor.Handled(codes.OK)
+	} else {
+		st, _ := status.FromError(err)
+		s.monitor.Handled(st.Code())
+	}
+	return err
+}

vendor/github.com/grpc-ecosystem/go-grpc-prometheus/client_reporter.go

@@ -0,0 +1,46 @@
+// Copyright 2016 Michal Witkowski. All Rights Reserved.
+// See LICENSE for licensing terms.
+
+package grpc_prometheus
+
+import (
+	"time"
+
+	"google.golang.org/grpc/codes"
+)
+
+type clientReporter struct {
+	metrics     *ClientMetrics
+	rpcType     grpcType
+	serviceName string
+	methodName  string
+	startTime   time.Time
+}
+
+func newClientReporter(m *ClientMetrics, rpcType grpcType, fullMethod string) *clientReporter {
+	r := &clientReporter{
+		metrics: m,
+		rpcType: rpcType,
+	}
+	if r.metrics.clientHandledHistogramEnabled {
+		r.startTime = time.Now()
+	}
+	r.serviceName, r.methodName = splitMethodName(fullMethod)
+	r.metrics.clientStartedCounter.WithLabelValues(string(r.rpcType), r.serviceName, r.methodName).Inc()
+	return r
+}
+
+func (r *clientReporter) ReceivedMessage() {
+	r.metrics.clientStreamMsgReceived.WithLabelValues(string(r.rpcType), r.serviceName, r.methodName).Inc()
+}
+
+func (r *clientReporter) SentMessage() {
+	r.metrics.clientStreamMsgSent.WithLabelValues(string(r.rpcType), r.serviceName, r.methodName).Inc()
+}
+
+func (r *clientReporter) Handled(code codes.Code) {
+	r.metrics.clientHandledCounter.WithLabelValues(string(r.rpcType), r.serviceName, r.methodName, code.String()).Inc()
+	if r.metrics.clientHandledHistogramEnabled {
+		r.metrics.clientHandledHistogram.WithLabelValues(string(r.rpcType), r.serviceName, r.methodName).Observe(time.Since(r.startTime).Seconds())
+	}
+}

vendor/github.com/grpc-ecosystem/go-grpc-prometheus/makefile

@@ -0,0 +1,16 @@
+SHELL="/bin/bash"
+
+GOFILES_NOVENDOR = $(shell go list ./... | grep -v /vendor/)
+
+all: vet fmt test
+
+fmt:
+	go fmt $(GOFILES_NOVENDOR)
+
+vet:
+	go vet $(GOFILES_NOVENDOR)
+
+test: vet
+	./scripts/test_all.sh
+
+.PHONY: all vet test

vendor/github.com/grpc-ecosystem/go-grpc-prometheus/metric_options.go

@@ -0,0 +1,41 @@
+package grpc_prometheus
+
+import (
+	prom "github.com/prometheus/client_golang/prometheus"
+)
+
+// A CounterOption lets you add options to Counter metrics using With* funcs.
+type CounterOption func(*prom.CounterOpts)
+
+type counterOptions []CounterOption
+
+func (co counterOptions) apply(o prom.CounterOpts) prom.CounterOpts {
+	for _, f := range co {
+		f(&o)
+	}
+	return o
+}
+
+// WithConstLabels allows you to add ConstLabels to Counter metrics.
+func WithConstLabels(labels prom.Labels) CounterOption {
+	return func(o *prom.CounterOpts) {
+		o.ConstLabels = labels
+	}
+}
+
+// A HistogramOption lets you add options to Histogram metrics using With*
+// funcs.
+type HistogramOption func(*prom.HistogramOpts)
+
+// WithHistogramBuckets allows you to specify custom bucket ranges for histograms if EnableHandlingTimeHistogram is on.
+func WithHistogramBuckets(buckets []float64) HistogramOption {
+	return func(o *prom.HistogramOpts) { o.Buckets = buckets }
+}
+
+// WithHistogramConstLabels allows you to add custom ConstLabels to
+// histograms metrics.
+func WithHistogramConstLabels(labels prom.Labels) HistogramOption {
+	return func(o *prom.HistogramOpts) {
+		o.ConstLabels = labels
+	}
+}

vendor/github.com/grpc-ecosystem/go-grpc-prometheus/server.go

@@ -0,0 +1,48 @@
+// Copyright 2016 Michal Witkowski. All Rights Reserved.
+// See LICENSE for licensing terms.
+
+// gRPC Prometheus monitoring interceptors for server-side gRPC.
+
+package grpc_prometheus
+
+import (
+	prom "github.com/prometheus/client_golang/prometheus"
+	"google.golang.org/grpc"
+)
+
+var (
+	// DefaultServerMetrics is the default instance of ServerMetrics. It is
+	// intended to be used in conjunction the default Prometheus metrics
+	// registry.
+	DefaultServerMetrics = NewServerMetrics()
+
+	// UnaryServerInterceptor is a gRPC server-side interceptor that provides Prometheus monitoring for Unary RPCs.
+	UnaryServerInterceptor = DefaultServerMetrics.UnaryServerInterceptor()
+
+	// StreamServerInterceptor is a gRPC server-side interceptor that provides Prometheus monitoring for Streaming RPCs.
+	StreamServerInterceptor = DefaultServerMetrics.StreamServerInterceptor()
+)
+
+func init() {
+	prom.MustRegister(DefaultServerMetrics.serverStartedCounter)
+	prom.MustRegister(DefaultServerMetrics.serverHandledCounter)
+	prom.MustRegister(DefaultServerMetrics.serverStreamMsgReceived)
+	prom.MustRegister(DefaultServerMetrics.serverStreamMsgSent)
+}
+
+// Register takes a gRPC server and pre-initializes all counters to 0. This
+// allows for easier monitoring in Prometheus (no missing metrics), and should
+// be called *after* all services have been registered with the server. This
+// function acts on the DefaultServerMetrics variable.
+func Register(server *grpc.Server) {
+	DefaultServerMetrics.InitializeMetrics(server)
+}
+
+// EnableHandlingTimeHistogram turns on recording of handling time
+// of RPCs. Histogram metrics can be very expensive for Prometheus
+// to retain and query. This function acts on the DefaultServerMetrics
+// variable and the default Prometheus metrics registry.
+func EnableHandlingTimeHistogram(opts ...HistogramOption) {
+	DefaultServerMetrics.EnableHandlingTimeHistogram(opts...)
+	prom.Register(DefaultServerMetrics.serverHandledHistogram)
+}

vendor/github.com/grpc-ecosystem/go-grpc-prometheus/server_metrics.go

@@ -0,0 +1,185 @@
+package grpc_prometheus
+
+import (
+	prom "github.com/prometheus/client_golang/prometheus"
+	"golang.org/x/net/context"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/status"
+)
+
+// ServerMetrics represents a collection of metrics to be registered on a
+// Prometheus metrics registry for a gRPC server.
+type ServerMetrics struct {
+	serverStartedCounter          *prom.CounterVec
+	serverHandledCounter          *prom.CounterVec
+	serverStreamMsgReceived       *prom.CounterVec
+	serverStreamMsgSent           *prom.CounterVec
+	serverHandledHistogramEnabled bool
+	serverHandledHistogramOpts    prom.HistogramOpts
+	serverHandledHistogram        *prom.HistogramVec
+}
+
+// NewServerMetrics returns a ServerMetrics object. Use a new instance of
+// ServerMetrics when not using the default Prometheus metrics registry, for
+// example when wanting to control which metrics are added to a registry as
+// opposed to automatically adding metrics via init functions.
+func NewServerMetrics(counterOpts ...CounterOption) *ServerMetrics {
+	opts := counterOptions(counterOpts)
+	return &ServerMetrics{
+		serverStartedCounter: prom.NewCounterVec(
+			opts.apply(prom.CounterOpts{
+				Name: "grpc_server_started_total",
+				Help: "Total number of RPCs started on the server.",
+			}), []string{"grpc_type", "grpc_service", "grpc_method"}),
+		serverHandledCounter: prom.NewCounterVec(
+			opts.apply(prom.CounterOpts{
+				Name: "grpc_server_handled_total",
+				Help: "Total number of RPCs completed on the server, regardless of success or failure.",
+			}), []string{"grpc_type", "grpc_service", "grpc_method", "grpc_code"}),
+		serverStreamMsgReceived: prom.NewCounterVec(
+			opts.apply(prom.CounterOpts{
+				Name: "grpc_server_msg_received_total",
+				Help: "Total number of RPC stream messages received on the server.",
+			}), []string{"grpc_type", "grpc_service", "grpc_method"}),
+		serverStreamMsgSent: prom.NewCounterVec(
+			opts.apply(prom.CounterOpts{
+				Name: "grpc_server_msg_sent_total",
+				Help: "Total number of gRPC stream messages sent by the server.",
+			}), []string{"grpc_type", "grpc_service", "grpc_method"}),
+		serverHandledHistogramEnabled: false,
+		serverHandledHistogramOpts: prom.HistogramOpts{
+			Name:    "grpc_server_handling_seconds",
+			Help:    "Histogram of response latency (seconds) of gRPC that had been application-level handled by the server.",
+			Buckets: prom.DefBuckets,
+		},
+		serverHandledHistogram: nil,
+	}
+}
+
+// EnableHandlingTimeHistogram enables histograms being registered when
+// registering the ServerMetrics on a Prometheus registry. Histograms can be
+// expensive on Prometheus servers. It takes options to configure histogram
+// options such as the defined buckets.
+func (m *ServerMetrics) EnableHandlingTimeHistogram(opts ...HistogramOption) {
+	for _, o := range opts {
+		o(&m.serverHandledHistogramOpts)
+	}
+	if !m.serverHandledHistogramEnabled {
+		m.serverHandledHistogram = prom.NewHistogramVec(
+			m.serverHandledHistogramOpts,
+			[]string{"grpc_type", "grpc_service", "grpc_method"},
+		)
+	}
+	m.serverHandledHistogramEnabled = true
+}
+
+// Describe sends the super-set of all possible descriptors of metrics
+// collected by this Collector to the provided channel and returns once
+// the last descriptor has been sent.
+func (m *ServerMetrics) Describe(ch chan<- *prom.Desc) {
+	m.serverStartedCounter.Describe(ch)
+	m.serverHandledCounter.Describe(ch)
+	m.serverStreamMsgReceived.Describe(ch)
+	m.serverStreamMsgSent.Describe(ch)
+	if m.serverHandledHistogramEnabled {
+		m.serverHandledHistogram.Describe(ch)
+	}
+}
+
+// Collect is called by the Prometheus registry when collecting
+// metrics. The implementation sends each collected metric via the
+// provided channel and returns once the last metric has been sent.
+func (m *ServerMetrics) Collect(ch chan<- prom.Metric) {
+	m.serverStartedCounter.Collect(ch)
+	m.serverHandledCounter.Collect(ch)
+	m.serverStreamMsgReceived.Collect(ch)
+	m.serverStreamMsgSent.Collect(ch)
+	if m.serverHandledHistogramEnabled {
+		m.serverHandledHistogram.Collect(ch)
+	}
+}
+
+// UnaryServerInterceptor is a gRPC server-side interceptor that provides Prometheus monitoring for Unary RPCs.
+func (m *ServerMetrics) UnaryServerInterceptor() func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (interface{}, error) {
+	return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (interface{}, error) {
+		monitor := newServerReporter(m, Unary, info.FullMethod)
+		monitor.ReceivedMessage()
+		resp, err := handler(ctx, req)
+		st, _ := status.FromError(err)
+		monitor.Handled(st.Code())
+		if err == nil {
+			monitor.SentMessage()
+		}
+		return resp, err
+	}
+}
+
+// StreamServerInterceptor is a gRPC server-side interceptor that provides Prometheus monitoring for Streaming RPCs.
+func (m *ServerMetrics) StreamServerInterceptor() func(srv interface{}, ss grpc.ServerStream, info *grpc.StreamServerInfo, handler grpc.StreamHandler) error {
+	return func(srv interface{}, ss grpc.ServerStream, info *grpc.StreamServerInfo, handler grpc.StreamHandler) error {
+		monitor := newServerReporter(m, streamRPCType(info), info.FullMethod)
+		err := handler(srv, &monitoredServerStream{ss, monitor})
+		st, _ := status.FromError(err)
+		monitor.Handled(st.Code())
+		return err
+	}
+}
+
+// InitializeMetrics initializes all metrics, with their appropriate null
+// value, for all gRPC methods registered on a gRPC server. This is useful, to
+// ensure that all metrics exist when collecting and querying.
+func (m *ServerMetrics) InitializeMetrics(server *grpc.Server) {
+	serviceInfo := server.GetServiceInfo()
+	for serviceName, info := range serviceInfo {
+		for _, mInfo := range info.Methods {
+			preRegisterMethod(m, serviceName, &mInfo)
+		}
+	}
+}
+
+func streamRPCType(info *grpc.StreamServerInfo) grpcType {
+	if info.IsClientStream && !info.IsServerStream {
+		return ClientStream
+	} else if !info.IsClientStream && info.IsServerStream {
+		return ServerStream
+	}
+	return BidiStream
+}
+
+// monitoredStream wraps grpc.ServerStream allowing each Sent/Recv of message to increment counters.
+type monitoredServerStream struct {
+	grpc.ServerStream
+	monitor *serverReporter
+}
+
+func (s *monitoredServerStream) SendMsg(m interface{}) error {
+	err := s.ServerStream.SendMsg(m)
+	if err == nil {
+		s.monitor.SentMessage()
+	}
+	return err
+}
+
+func (s *monitoredServerStream) RecvMsg(m interface{}) error {
+	err := s.ServerStream.RecvMsg(m)
+	if err == nil {
+		s.monitor.ReceivedMessage()
+	}
+	return err
+}
+
+// preRegisterMethod is invoked on Register of a Server, allowing all gRPC services labels to be pre-populated.
+func preRegisterMethod(metrics *ServerMetrics, serviceName string, mInfo *grpc.MethodInfo) {
+	methodName := mInfo.Name
+	methodType := string(typeFromMethodInfo(mInfo))
+	// These are just references (no increments), as just referencing will create the labels but not set values.
+	metrics.serverStartedCounter.GetMetricWithLabelValues(methodType, serviceName, methodName)
+	metrics.serverStreamMsgReceived.GetMetricWithLabelValues(methodType, serviceName, methodName)
+	metrics.serverStreamMsgSent.GetMetricWithLabelValues(methodType, serviceName, methodName)
+	if metrics.serverHandledHistogramEnabled {
+		metrics.serverHandledHistogram.GetMetricWithLabelValues(methodType, serviceName, methodName)
+	}
+	for _, code := range allCodes {
+		metrics.serverHandledCounter.GetMetricWithLabelValues(methodType, serviceName, methodName, code.String())
+	}
+}

vendor/github.com/grpc-ecosystem/go-grpc-prometheus/server_reporter.go

@@ -0,0 +1,46 @@
+// Copyright 2016 Michal Witkowski. All Rights Reserved.
+// See LICENSE for licensing terms.
+
+package grpc_prometheus
+
+import (
+	"time"
+
+	"google.golang.org/grpc/codes"
+)
+
+type serverReporter struct {
+	metrics     *ServerMetrics
+	rpcType     grpcType
+	serviceName string
+	methodName  string
+	startTime   time.Time
+}
+
+func newServerReporter(m *ServerMetrics, rpcType grpcType, fullMethod string) *serverReporter {
+	r := &serverReporter{
+		metrics: m,
+		rpcType: rpcType,
+	}
+	if r.metrics.serverHandledHistogramEnabled {
+		r.startTime = time.Now()
+	}
+	r.serviceName, r.methodName = splitMethodName(fullMethod)
+	r.metrics.serverStartedCounter.WithLabelValues(string(r.rpcType), r.serviceName, r.methodName).Inc()
+	return r
+}
+
+func (r *serverReporter) ReceivedMessage() {
+	r.metrics.serverStreamMsgReceived.WithLabelValues(string(r.rpcType), r.serviceName, r.methodName).Inc()
+}
+
+func (r *serverReporter) SentMessage() {
+	r.metrics.serverStreamMsgSent.WithLabelValues(string(r.rpcType), r.serviceName, r.methodName).Inc()
+}
+
+func (r *serverReporter) Handled(code codes.Code) {
+	r.metrics.serverHandledCounter.WithLabelValues(string(r.rpcType), r.serviceName, r.methodName, code.String()).Inc()
+	if r.metrics.serverHandledHistogramEnabled {
+		r.metrics.serverHandledHistogram.WithLabelValues(string(r.rpcType), r.serviceName, r.methodName).Observe(time.Since(r.startTime).Seconds())
+	}
+}

vendor/github.com/grpc-ecosystem/go-grpc-prometheus/util.go

@@ -0,0 +1,50 @@
+// Copyright 2016 Michal Witkowski. All Rights Reserved.
+// See LICENSE for licensing terms.
+
+package grpc_prometheus
+
+import (
+	"strings"
+
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
+)
+
+type grpcType string
+
+const (
+	Unary        grpcType = "unary"
+	ClientStream grpcType = "client_stream"
+	ServerStream grpcType = "server_stream"
+	BidiStream   grpcType = "bidi_stream"
+)
+
+var (
+	allCodes = []codes.Code{
+		codes.OK, codes.Canceled, codes.Unknown, codes.InvalidArgument, codes.DeadlineExceeded, codes.NotFound,
+		codes.AlreadyExists, codes.PermissionDenied, codes.Unauthenticated, codes.ResourceExhausted,
+		codes.FailedPrecondition, codes.Aborted, codes.OutOfRange, codes.Unimplemented, codes.Internal,
+		codes.Unavailable, codes.DataLoss,
+	}
+)
+
+func splitMethodName(fullMethodName string) (string, string) {
+	fullMethodName = strings.TrimPrefix(fullMethodName, "/") // remove leading slash
+	if i := strings.Index(fullMethodName, "/"); i >= 0 {
+		return fullMethodName[:i], fullMethodName[i+1:]
+	}
+	return "unknown", "unknown"
+}
+
+func typeFromMethodInfo(mInfo *grpc.MethodInfo) grpcType {
+	if !mInfo.IsClientStream && !mInfo.IsServerStream {
+		return Unary
+	}
+	if mInfo.IsClientStream && !mInfo.IsServerStream {
+		return ClientStream
+	}
+	if !mInfo.IsClientStream && mInfo.IsServerStream {
+		return ServerStream
+	}
+	return BidiStream
+}

vendor/github.com/munnerz/goautoneg/LICENSE

@@ -0,0 +1,31 @@
+Copyright (c) 2011, Open Knowledge Foundation Ltd.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    Neither the name of the Open Knowledge Foundation Ltd. nor the
+    names of its contributors may be used to endorse or promote
+    products derived from this software without specific prior written
+    permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/github.com/munnerz/goautoneg/Makefile

@@ -0,0 +1,13 @@
+include $(GOROOT)/src/Make.inc
+
+TARG=bitbucket.org/ww/goautoneg
+GOFILES=autoneg.go
+
+include $(GOROOT)/src/Make.pkg
+
+format:
+	gofmt -w *.go
+
+docs:
+	gomake clean
+	godoc ${TARG} > README.txt

vendor/github.com/munnerz/goautoneg/README.txt

@@ -0,0 +1,67 @@
+PACKAGE
+
+package goautoneg
+import "bitbucket.org/ww/goautoneg"
+
+HTTP Content-Type Autonegotiation.
+
+The functions in this package implement the behaviour specified in
+http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
+
+Copyright (c) 2011, Open Knowledge Foundation Ltd.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    Neither the name of the Open Knowledge Foundation Ltd. nor the
+    names of its contributors may be used to endorse or promote
+    products derived from this software without specific prior written
+    permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+FUNCTIONS
+
+func Negotiate(header string, alternatives []string) (content_type string)
+Negotiate the most appropriate content_type given the accept header
+and a list of alternatives.
+
+func ParseAccept(header string) (accept []Accept)
+Parse an Accept Header string returning a sorted list
+of clauses
+
+
+TYPES
+
+type Accept struct {
+    Type, SubType string
+    Q             float32
+    Params        map[string]string
+}
+Structure to represent a clause in an HTTP Accept Header
+
+
+SUBDIRECTORIES
+
+	.hg

vendor/github.com/munnerz/goautoneg/autoneg.go

@@ -0,0 +1,189 @@
+/*
+HTTP Content-Type Autonegotiation.
+
+The functions in this package implement the behaviour specified in
+http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
+
+Copyright (c) 2011, Open Knowledge Foundation Ltd.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    Neither the name of the Open Knowledge Foundation Ltd. nor the
+    names of its contributors may be used to endorse or promote
+    products derived from this software without specific prior written
+    permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package goautoneg
+
+import (
+	"sort"
+	"strconv"
+	"strings"
+)
+
+// Structure to represent a clause in an HTTP Accept Header
+type Accept struct {
+	Type, SubType string
+	Q             float64
+	Params        map[string]string
+}
+
+// acceptSlice is defined to implement sort interface.
+type acceptSlice []Accept
+
+func (slice acceptSlice) Len() int {
+	return len(slice)
+}
+
+func (slice acceptSlice) Less(i, j int) bool {
+	ai, aj := slice[i], slice[j]
+	if ai.Q > aj.Q {
+		return true
+	}
+	if ai.Type != "*" && aj.Type == "*" {
+		return true
+	}
+	if ai.SubType != "*" && aj.SubType == "*" {
+		return true
+	}
+	return false
+}
+
+func (slice acceptSlice) Swap(i, j int) {
+	slice[i], slice[j] = slice[j], slice[i]
+}
+
+func stringTrimSpaceCutset(r rune) bool {
+	return r == ' '
+}
+
+func nextSplitElement(s, sep string) (item string, remaining string) {
+	if index := strings.Index(s, sep); index != -1 {
+		return s[:index], s[index+1:]
+	}
+	return s, ""
+}
+
+// Parse an Accept Header string returning a sorted list
+// of clauses
+func ParseAccept(header string) acceptSlice {
+	partsCount := 0
+	remaining := header
+	for len(remaining) > 0 {
+		partsCount++
+		_, remaining = nextSplitElement(remaining, ",")
+	}
+	accept := make(acceptSlice, 0, partsCount)
+
+	remaining = header
+	var part string
+	for len(remaining) > 0 {
+		part, remaining = nextSplitElement(remaining, ",")
+		part = strings.TrimFunc(part, stringTrimSpaceCutset)
+
+		a := Accept{
+			Q: 1.0,
+		}
+
+		sp, remainingPart := nextSplitElement(part, ";")
+
+		sp0, spRemaining := nextSplitElement(sp, "/")
+		a.Type = strings.TrimFunc(sp0, stringTrimSpaceCutset)
+
+		switch {
+		case len(spRemaining) == 0:
+			if a.Type == "*" {
+				a.SubType = "*"
+			} else {
+				continue
+			}
+		default:
+			var sp1 string
+			sp1, spRemaining = nextSplitElement(spRemaining, "/")
+			if len(spRemaining) > 0 {
+				continue
+			}
+			a.SubType = strings.TrimFunc(sp1, stringTrimSpaceCutset)
+		}
+
+		if len(remainingPart) == 0 {
+			accept = append(accept, a)
+			continue
+		}
+
+		a.Params = make(map[string]string)
+		for len(remainingPart) > 0 {
+			sp, remainingPart = nextSplitElement(remainingPart, ";")
+			sp0, spRemaining = nextSplitElement(sp, "=")
+			if len(spRemaining) == 0 {
+				continue
+			}
+			var sp1 string
+			sp1, spRemaining = nextSplitElement(spRemaining, "=")
+			if len(spRemaining) != 0 {
+				continue
+			}
+			token := strings.TrimFunc(sp0, stringTrimSpaceCutset)
+			if token == "q" {
+				a.Q, _ = strconv.ParseFloat(sp1, 32)
+			} else {
+				a.Params[token] = strings.TrimFunc(sp1, stringTrimSpaceCutset)
+			}
+		}
+
+		accept = append(accept, a)
+	}
+
+	sort.Sort(accept)
+	return accept
+}
+
+// Negotiate the most appropriate content_type given the accept header
+// and a list of alternatives.
+func Negotiate(header string, alternatives []string) (content_type string) {
+	asp := make([][]string, 0, len(alternatives))
+	for _, ctype := range alternatives {
+		asp = append(asp, strings.SplitN(ctype, "/", 2))
+	}
+	for _, clause := range ParseAccept(header) {
+		for i, ctsp := range asp {
+			if clause.Type == ctsp[0] && clause.SubType == ctsp[1] {
+				content_type = alternatives[i]
+				return
+			}
+			if clause.Type == ctsp[0] && clause.SubType == "*" {
+				content_type = alternatives[i]
+				return
+			}
+			if clause.Type == "*" && clause.SubType == "*" {
+				content_type = alternatives[i]
+				return
+			}
+		}
+	}
+	return
+}

vendor/github.com/prometheus/client_golang/prometheus/testutil/lint.go

@@ -0,0 +1,46 @@
+// Copyright 2020 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package testutil
+
+import (
+	"fmt"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/testutil/promlint"
+)
+
+// CollectAndLint registers the provided Collector with a newly created pedantic
+// Registry. It then calls GatherAndLint with that Registry and with the
+// provided metricNames.
+func CollectAndLint(c prometheus.Collector, metricNames ...string) ([]promlint.Problem, error) {
+	reg := prometheus.NewPedanticRegistry()
+	if err := reg.Register(c); err != nil {
+		return nil, fmt.Errorf("registering collector failed: %s", err)
+	}
+	return GatherAndLint(reg, metricNames...)
+}
+
+// GatherAndLint gathers all metrics from the provided Gatherer and checks them
+// with the linter in the promlint package. If any metricNames are provided,
+// only metrics with those names are checked.
+func GatherAndLint(g prometheus.Gatherer, metricNames ...string) ([]promlint.Problem, error) {
+	got, err := g.Gather()
+	if err != nil {
+		return nil, fmt.Errorf("gathering metrics failed: %s", err)
+	}
+	if metricNames != nil {
+		got = filterMetrics(got, metricNames)
+	}
+	return promlint.NewWithMetricFamilies(got).Lint()
+}

vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/promlint.go

@@ -0,0 +1,386 @@
+// Copyright 2020 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package promlint provides a linter for Prometheus metrics.
+package promlint
+
+import (
+	"fmt"
+	"io"
+	"regexp"
+	"sort"
+	"strings"
+
+	"github.com/prometheus/common/expfmt"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+// A Linter is a Prometheus metrics linter.  It identifies issues with metric
+// names, types, and metadata, and reports them to the caller.
+type Linter struct {
+	// The linter will read metrics in the Prometheus text format from r and
+	// then lint it, _and_ it will lint the metrics provided directly as
+	// MetricFamily proto messages in mfs. Note, however, that the current
+	// constructor functions New and NewWithMetricFamilies only ever set one
+	// of them.
+	r   io.Reader
+	mfs []*dto.MetricFamily
+}
+
+// A Problem is an issue detected by a Linter.
+type Problem struct {
+	// The name of the metric indicated by this Problem.
+	Metric string
+
+	// A description of the issue for this Problem.
+	Text string
+}
+
+// newProblem is helper function to create a Problem.
+func newProblem(mf *dto.MetricFamily, text string) Problem {
+	return Problem{
+		Metric: mf.GetName(),
+		Text:   text,
+	}
+}
+
+// New creates a new Linter that reads an input stream of Prometheus metrics in
+// the Prometheus text exposition format.
+func New(r io.Reader) *Linter {
+	return &Linter{
+		r: r,
+	}
+}
+
+// NewWithMetricFamilies creates a new Linter that reads from a slice of
+// MetricFamily protobuf messages.
+func NewWithMetricFamilies(mfs []*dto.MetricFamily) *Linter {
+	return &Linter{
+		mfs: mfs,
+	}
+}
+
+// Lint performs a linting pass, returning a slice of Problems indicating any
+// issues found in the metrics stream. The slice is sorted by metric name
+// and issue description.
+func (l *Linter) Lint() ([]Problem, error) {
+	var problems []Problem
+
+	if l.r != nil {
+		d := expfmt.NewDecoder(l.r, expfmt.FmtText)
+
+		mf := &dto.MetricFamily{}
+		for {
+			if err := d.Decode(mf); err != nil {
+				if err == io.EOF {
+					break
+				}
+
+				return nil, err
+			}
+
+			problems = append(problems, lint(mf)...)
+		}
+	}
+	for _, mf := range l.mfs {
+		problems = append(problems, lint(mf)...)
+	}
+
+	// Ensure deterministic output.
+	sort.SliceStable(problems, func(i, j int) bool {
+		if problems[i].Metric == problems[j].Metric {
+			return problems[i].Text < problems[j].Text
+		}
+		return problems[i].Metric < problems[j].Metric
+	})
+
+	return problems, nil
+}
+
+// lint is the entry point for linting a single metric.
+func lint(mf *dto.MetricFamily) []Problem {
+	fns := []func(mf *dto.MetricFamily) []Problem{
+		lintHelp,
+		lintMetricUnits,
+		lintCounter,
+		lintHistogramSummaryReserved,
+		lintMetricTypeInName,
+		lintReservedChars,
+		lintCamelCase,
+		lintUnitAbbreviations,
+	}
+
+	var problems []Problem
+	for _, fn := range fns {
+		problems = append(problems, fn(mf)...)
+	}
+
+	// TODO(mdlayher): lint rules for specific metrics types.
+	return problems
+}
+
+// lintHelp detects issues related to the help text for a metric.
+func lintHelp(mf *dto.MetricFamily) []Problem {
+	var problems []Problem
+
+	// Expect all metrics to have help text available.
+	if mf.Help == nil {
+		problems = append(problems, newProblem(mf, "no help text"))
+	}
+
+	return problems
+}
+
+// lintMetricUnits detects issues with metric unit names.
+func lintMetricUnits(mf *dto.MetricFamily) []Problem {
+	var problems []Problem
+
+	unit, base, ok := metricUnits(*mf.Name)
+	if !ok {
+		// No known units detected.
+		return nil
+	}
+
+	// Unit is already a base unit.
+	if unit == base {
+		return nil
+	}
+
+	problems = append(problems, newProblem(mf, fmt.Sprintf("use base unit %q instead of %q", base, unit)))
+
+	return problems
+}
+
+// lintCounter detects issues specific to counters, as well as patterns that should
+// only be used with counters.
+func lintCounter(mf *dto.MetricFamily) []Problem {
+	var problems []Problem
+
+	isCounter := mf.GetType() == dto.MetricType_COUNTER
+	isUntyped := mf.GetType() == dto.MetricType_UNTYPED
+	hasTotalSuffix := strings.HasSuffix(mf.GetName(), "_total")
+
+	switch {
+	case isCounter && !hasTotalSuffix:
+		problems = append(problems, newProblem(mf, `counter metrics should have "_total" suffix`))
+	case !isUntyped && !isCounter && hasTotalSuffix:
+		problems = append(problems, newProblem(mf, `non-counter metrics should not have "_total" suffix`))
+	}
+
+	return problems
+}
+
+// lintHistogramSummaryReserved detects when other types of metrics use names or labels
+// reserved for use by histograms and/or summaries.
+func lintHistogramSummaryReserved(mf *dto.MetricFamily) []Problem {
+	// These rules do not apply to untyped metrics.
+	t := mf.GetType()
+	if t == dto.MetricType_UNTYPED {
+		return nil
+	}
+
+	var problems []Problem
+
+	isHistogram := t == dto.MetricType_HISTOGRAM
+	isSummary := t == dto.MetricType_SUMMARY
+
+	n := mf.GetName()
+
+	if !isHistogram && strings.HasSuffix(n, "_bucket") {
+		problems = append(problems, newProblem(mf, `non-histogram metrics should not have "_bucket" suffix`))
+	}
+	if !isHistogram && !isSummary && strings.HasSuffix(n, "_count") {
+		problems = append(problems, newProblem(mf, `non-histogram and non-summary metrics should not have "_count" suffix`))
+	}
+	if !isHistogram && !isSummary && strings.HasSuffix(n, "_sum") {
+		problems = append(problems, newProblem(mf, `non-histogram and non-summary metrics should not have "_sum" suffix`))
+	}
+
+	for _, m := range mf.GetMetric() {
+		for _, l := range m.GetLabel() {
+			ln := l.GetName()
+
+			if !isHistogram && ln == "le" {
+				problems = append(problems, newProblem(mf, `non-histogram metrics should not have "le" label`))
+			}
+			if !isSummary && ln == "quantile" {
+				problems = append(problems, newProblem(mf, `non-summary metrics should not have "quantile" label`))
+			}
+		}
+	}
+
+	return problems
+}
+
+// lintMetricTypeInName detects when metric types are included in the metric name.
+func lintMetricTypeInName(mf *dto.MetricFamily) []Problem {
+	var problems []Problem
+	n := strings.ToLower(mf.GetName())
+
+	for i, t := range dto.MetricType_name {
+		if i == int32(dto.MetricType_UNTYPED) {
+			continue
+		}
+
+		typename := strings.ToLower(t)
+		if strings.Contains(n, "_"+typename+"_") || strings.HasSuffix(n, "_"+typename) {
+			problems = append(problems, newProblem(mf, fmt.Sprintf(`metric name should not include type '%s'`, typename)))
+		}
+	}
+	return problems
+}
+
+// lintReservedChars detects colons in metric names.
+func lintReservedChars(mf *dto.MetricFamily) []Problem {
+	var problems []Problem
+	if strings.Contains(mf.GetName(), ":") {
+		problems = append(problems, newProblem(mf, "metric names should not contain ':'"))
+	}
+	return problems
+}
+
+var camelCase = regexp.MustCompile(`[a-z][A-Z]`)
+
+// lintCamelCase detects metric names and label names written in camelCase.
+func lintCamelCase(mf *dto.MetricFamily) []Problem {
+	var problems []Problem
+	if camelCase.FindString(mf.GetName()) != "" {
+		problems = append(problems, newProblem(mf, "metric names should be written in 'snake_case' not 'camelCase'"))
+	}
+
+	for _, m := range mf.GetMetric() {
+		for _, l := range m.GetLabel() {
+			if camelCase.FindString(l.GetName()) != "" {
+				problems = append(problems, newProblem(mf, "label names should be written in 'snake_case' not 'camelCase'"))
+			}
+		}
+	}
+	return problems
+}
+
+// lintUnitAbbreviations detects abbreviated units in the metric name.
+func lintUnitAbbreviations(mf *dto.MetricFamily) []Problem {
+	var problems []Problem
+	n := strings.ToLower(mf.GetName())
+	for _, s := range unitAbbreviations {
+		if strings.Contains(n, "_"+s+"_") || strings.HasSuffix(n, "_"+s) {
+			problems = append(problems, newProblem(mf, "metric names should not contain abbreviated units"))
+		}
+	}
+	return problems
+}
+
+// metricUnits attempts to detect known unit types used as part of a metric name,
+// e.g. "foo_bytes_total" or "bar_baz_milligrams".
+func metricUnits(m string) (unit string, base string, ok bool) {
+	ss := strings.Split(m, "_")
+
+	for unit, base := range units {
+		// Also check for "no prefix".
+		for _, p := range append(unitPrefixes, "") {
+			for _, s := range ss {
+				// Attempt to explicitly match a known unit with a known prefix,
+				// as some words may look like "units" when matching suffix.
+				//
+				// As an example, "thermometers" should not match "meters", but
+				// "kilometers" should.
+				if s == p+unit {
+					return p + unit, base, true
+				}
+			}
+		}
+	}
+
+	return "", "", false
+}
+
+// Units and their possible prefixes recognized by this library.  More can be
+// added over time as needed.
+var (
+	// map a unit to the appropriate base unit.
+	units = map[string]string{
+		// Base units.
+		"amperes": "amperes",
+		"bytes":   "bytes",
+		"celsius": "celsius", // Also allow Celsius because it is common in typical Prometheus use cases.
+		"grams":   "grams",
+		"joules":  "joules",
+		"kelvin":  "kelvin", // SI base unit, used in special cases (e.g. color temperature, scientific measurements).
+		"meters":  "meters", // Both American and international spelling permitted.
+		"metres":  "metres",
+		"seconds": "seconds",
+		"volts":   "volts",
+
+		// Non base units.
+		// Time.
+		"minutes": "seconds",
+		"hours":   "seconds",
+		"days":    "seconds",
+		"weeks":   "seconds",
+		// Temperature.
+		"kelvins":    "kelvin",
+		"fahrenheit": "celsius",
+		"rankine":    "celsius",
+		// Length.
+		"inches": "meters",
+		"yards":  "meters",
+		"miles":  "meters",
+		// Bytes.
+		"bits": "bytes",
+		// Energy.
+		"calories": "joules",
+		// Mass.
+		"pounds": "grams",
+		"ounces": "grams",
+	}
+
+	unitPrefixes = []string{
+		"pico",
+		"nano",
+		"micro",
+		"milli",
+		"centi",
+		"deci",
+		"deca",
+		"hecto",
+		"kilo",
+		"kibi",
+		"mega",
+		"mibi",
+		"giga",
+		"gibi",
+		"tera",
+		"tebi",
+		"peta",
+		"pebi",
+	}
+
+	// Common abbreviations that we'd like to discourage.
+	unitAbbreviations = []string{
+		"s",
+		"ms",
+		"us",
+		"ns",
+		"sec",
+		"b",
+		"kb",
+		"mb",
+		"gb",
+		"tb",
+		"pb",
+		"m",
+		"h",
+		"d",
+	}
+)

vendor/github.com/prometheus/client_golang/prometheus/testutil/testutil.go

@@ -0,0 +1,230 @@
+// Copyright 2018 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package testutil provides helpers to test code using the prometheus package
+// of client_golang.
+//
+// While writing unit tests to verify correct instrumentation of your code, it's
+// a common mistake to mostly test the instrumentation library instead of your
+// own code. Rather than verifying that a prometheus.Counter's value has changed
+// as expected or that it shows up in the exposition after registration, it is
+// in general more robust and more faithful to the concept of unit tests to use
+// mock implementations of the prometheus.Counter and prometheus.Registerer
+// interfaces that simply assert that the Add or Register methods have been
+// called with the expected arguments. However, this might be overkill in simple
+// scenarios. The ToFloat64 function is provided for simple inspection of a
+// single-value metric, but it has to be used with caution.
+//
+// End-to-end tests to verify all or larger parts of the metrics exposition can
+// be implemented with the CollectAndCompare or GatherAndCompare functions. The
+// most appropriate use is not so much testing instrumentation of your code, but
+// testing custom prometheus.Collector implementations and in particular whole
+// exporters, i.e. programs that retrieve telemetry data from a 3rd party source
+// and convert it into Prometheus metrics.
+//
+// In a similar pattern, CollectAndLint and GatherAndLint can be used to detect
+// metrics that have issues with their name, type, or metadata without being
+// necessarily invalid, e.g. a counter with a name missing the “_total” suffix.
+package testutil
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+
+	"github.com/prometheus/common/expfmt"
+
+	dto "github.com/prometheus/client_model/go"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/internal"
+)
+
+// ToFloat64 collects all Metrics from the provided Collector. It expects that
+// this results in exactly one Metric being collected, which must be a Gauge,
+// Counter, or Untyped. In all other cases, ToFloat64 panics. ToFloat64 returns
+// the value of the collected Metric.
+//
+// The Collector provided is typically a simple instance of Gauge or Counter, or
+// – less commonly – a GaugeVec or CounterVec with exactly one element. But any
+// Collector fulfilling the prerequisites described above will do.
+//
+// Use this function with caution. It is computationally very expensive and thus
+// not suited at all to read values from Metrics in regular code. This is really
+// only for testing purposes, and even for testing, other approaches are often
+// more appropriate (see this package's documentation).
+//
+// A clear anti-pattern would be to use a metric type from the prometheus
+// package to track values that are also needed for something else than the
+// exposition of Prometheus metrics. For example, you would like to track the
+// number of items in a queue because your code should reject queuing further
+// items if a certain limit is reached. It is tempting to track the number of
+// items in a prometheus.Gauge, as it is then easily available as a metric for
+// exposition, too. However, then you would need to call ToFloat64 in your
+// regular code, potentially quite often. The recommended way is to track the
+// number of items conventionally (in the way you would have done it without
+// considering Prometheus metrics) and then expose the number with a
+// prometheus.GaugeFunc.
+func ToFloat64(c prometheus.Collector) float64 {
+	var (
+		m      prometheus.Metric
+		mCount int
+		mChan  = make(chan prometheus.Metric)
+		done   = make(chan struct{})
+	)
+
+	go func() {
+		for m = range mChan {
+			mCount++
+		}
+		close(done)
+	}()
+
+	c.Collect(mChan)
+	close(mChan)
+	<-done
+
+	if mCount != 1 {
+		panic(fmt.Errorf("collected %d metrics instead of exactly 1", mCount))
+	}
+
+	pb := &dto.Metric{}
+	m.Write(pb)
+	if pb.Gauge != nil {
+		return pb.Gauge.GetValue()
+	}
+	if pb.Counter != nil {
+		return pb.Counter.GetValue()
+	}
+	if pb.Untyped != nil {
+		return pb.Untyped.GetValue()
+	}
+	panic(fmt.Errorf("collected a non-gauge/counter/untyped metric: %s", pb))
+}
+
+// CollectAndCount registers the provided Collector with a newly created
+// pedantic Registry. It then calls GatherAndCount with that Registry and with
+// the provided metricNames. In the unlikely case that the registration or the
+// gathering fails, this function panics. (This is inconsistent with the other
+// CollectAnd… functions in this package and has historical reasons. Changing
+// the function signature would be a breaking change and will therefore only
+// happen with the next major version bump.)
+func CollectAndCount(c prometheus.Collector, metricNames ...string) int {
+	reg := prometheus.NewPedanticRegistry()
+	if err := reg.Register(c); err != nil {
+		panic(fmt.Errorf("registering collector failed: %s", err))
+	}
+	result, err := GatherAndCount(reg, metricNames...)
+	if err != nil {
+		panic(err)
+	}
+	return result
+}
+
+// GatherAndCount gathers all metrics from the provided Gatherer and counts
+// them. It returns the number of metric children in all gathered metric
+// families together. If any metricNames are provided, only metrics with those
+// names are counted.
+func GatherAndCount(g prometheus.Gatherer, metricNames ...string) (int, error) {
+	got, err := g.Gather()
+	if err != nil {
+		return 0, fmt.Errorf("gathering metrics failed: %s", err)
+	}
+	if metricNames != nil {
+		got = filterMetrics(got, metricNames)
+	}
+
+	result := 0
+	for _, mf := range got {
+		result += len(mf.GetMetric())
+	}
+	return result, nil
+}
+
+// CollectAndCompare registers the provided Collector with a newly created
+// pedantic Registry. It then calls GatherAndCompare with that Registry and with
+// the provided metricNames.
+func CollectAndCompare(c prometheus.Collector, expected io.Reader, metricNames ...string) error {
+	reg := prometheus.NewPedanticRegistry()
+	if err := reg.Register(c); err != nil {
+		return fmt.Errorf("registering collector failed: %s", err)
+	}
+	return GatherAndCompare(reg, expected, metricNames...)
+}
+
+// GatherAndCompare gathers all metrics from the provided Gatherer and compares
+// it to an expected output read from the provided Reader in the Prometheus text
+// exposition format. If any metricNames are provided, only metrics with those
+// names are compared.
+func GatherAndCompare(g prometheus.Gatherer, expected io.Reader, metricNames ...string) error {
+	got, err := g.Gather()
+	if err != nil {
+		return fmt.Errorf("gathering metrics failed: %s", err)
+	}
+	if metricNames != nil {
+		got = filterMetrics(got, metricNames)
+	}
+	var tp expfmt.TextParser
+	wantRaw, err := tp.TextToMetricFamilies(expected)
+	if err != nil {
+		return fmt.Errorf("parsing expected metrics failed: %s", err)
+	}
+	want := internal.NormalizeMetricFamilies(wantRaw)
+
+	return compare(got, want)
+}
+
+// compare encodes both provided slices of metric families into the text format,
+// compares their string message, and returns an error if they do not match.
+// The error contains the encoded text of both the desired and the actual
+// result.
+func compare(got, want []*dto.MetricFamily) error {
+	var gotBuf, wantBuf bytes.Buffer
+	enc := expfmt.NewEncoder(&gotBuf, expfmt.FmtText)
+	for _, mf := range got {
+		if err := enc.Encode(mf); err != nil {
+			return fmt.Errorf("encoding gathered metrics failed: %s", err)
+		}
+	}
+	enc = expfmt.NewEncoder(&wantBuf, expfmt.FmtText)
+	for _, mf := range want {
+		if err := enc.Encode(mf); err != nil {
+			return fmt.Errorf("encoding expected metrics failed: %s", err)
+		}
+	}
+
+	if wantBuf.String() != gotBuf.String() {
+		return fmt.Errorf(`
+metric output does not match expectation; want:
+
+%s
+got:
+
+%s`, wantBuf.String(), gotBuf.String())
+
+	}
+	return nil
+}
+
+func filterMetrics(metrics []*dto.MetricFamily, names []string) []*dto.MetricFamily {
+	var filtered []*dto.MetricFamily
+	for _, m := range metrics {
+		for _, name := range names {
+			if m.GetName() == name {
+				filtered = append(filtered, m)
+				break
+			}
+		}
+	}
+	return filtered
+}