mirror of
https://github.com/kubernetes-sigs/descheduler.git
synced 2026-01-26 13:29:11 +01:00
8795fe6b90
Prior to this change the output from the command "descheduler version"
when run using the official container images from k8s.gcr.io would
always output an empty string. See below for an example.
```
docker run k8s.gcr.io/descheduler/descheduler:v0.19.0 /bin/descheduler version
Descheduler version {Major: Minor: GitCommit: GitVersion: BuildDate:2020-09-01T16:43:23+0000 GoVersion:go1.15 Compiler:gc Platform:linux/amd64}
```
This change makes it possible to pass the descheduler version
information to the automated container image build process and
also makes it work for local builds too.
95 lines
2.7 KiB
Go
95 lines
2.7 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package app
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import (
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"fmt"
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"regexp"
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"runtime"
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"strings"
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"github.com/spf13/cobra"
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)
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var (
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// version is a constant representing the version tag that
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// generated this build. It should be set during build via -ldflags.
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version string
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// buildDate in ISO8601 format, output of $(date -u +'%Y-%m-%dT%H:%M:%SZ')
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//It should be set during build via -ldflags.
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buildDate string
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)
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// Info holds the information related to descheduler app version.
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type Info struct {
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Major string `json:"major"`
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Minor string `json:"minor"`
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GitVersion string `json:"gitVersion"`
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BuildDate string `json:"buildDate"`
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GoVersion string `json:"goVersion"`
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Compiler string `json:"compiler"`
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Platform string `json:"platform"`
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}
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// Get returns the overall codebase version. It's for detecting
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// what code a binary was built from.
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func Get() Info {
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majorVersion, minorVersion := splitVersion(version)
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return Info{
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Major: majorVersion,
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Minor: minorVersion,
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GitVersion: version,
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BuildDate: buildDate,
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GoVersion: runtime.Version(),
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Compiler: runtime.Compiler,
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Platform: fmt.Sprintf("%s/%s", runtime.GOOS, runtime.GOARCH),
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}
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}
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func NewVersionCommand() *cobra.Command {
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var versionCmd = &cobra.Command{
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Use: "version",
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Short: "Version of descheduler",
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Long: `Prints the version of descheduler.`,
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Run: func(cmd *cobra.Command, args []string) {
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fmt.Printf("Descheduler version %+v\n", Get())
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},
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}
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return versionCmd
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}
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// splitVersion splits the git version to generate major and minor versions needed.
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func splitVersion(version string) (string, string) {
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if version == "" {
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return "", ""
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}
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// Version from an automated container build environment for a tag. For example v20200521-v0.18.0.
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m1, _ := regexp.MatchString(`^v\d{8}-v\d+\.\d+\.\d+$`, version)
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// Version from an automated container build environment(not a tag) or a local build. For example v20201009-v0.18.0-46-g939c1c0.
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m2, _ := regexp.MatchString(`^v\d{8}-v\d+\.\d+\.\d+-\w+-\w+$`, version)
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if m1 || m2 {
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semVer := strings.Split(version, "-")[1]
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return strings.Trim(strings.Split(semVer, ".")[0], "v"), strings.Split(semVer, ".")[1] + "+"
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}
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// Something went wrong
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return "", ""
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}
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