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Break dependency on k8s.io/kubernetes

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This commit is contained in:
Mike Dame
2020-01-24 18:36:34 -05:00
parent 861f057d1b
commit 431597dd43
16 changed files with 389 additions and 75 deletions
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38
pkg/utils/predicates.go
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@@ -21,8 +21,8 @@ import (
"k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/selection"
"k8s.io/klog"
v1helper "k8s.io/kubernetes/pkg/apis/core/v1/helper"
)
// The following code has been copied from predicates package to avoid the
@@ -81,7 +81,7 @@ func podMatchesNodeLabels(pod *v1.Pod, node *v1.Node) bool {
// terms are ORed, and an empty list of terms will match nothing.
func nodeMatchesNodeSelectorTerms(node *v1.Node, nodeSelectorTerms []v1.NodeSelectorTerm) bool {
for _, req := range nodeSelectorTerms {
nodeSelector, err := v1helper.NodeSelectorRequirementsAsSelector(req.MatchExpressions)
nodeSelector, err := NodeSelectorRequirementsAsSelector(req.MatchExpressions)
if err != nil {
klog.V(10).Infof("Failed to parse MatchExpressions: %+v, regarding as not match.", req.MatchExpressions)
return false
@@ -92,3 +92,37 @@ func nodeMatchesNodeSelectorTerms(node *v1.Node, nodeSelectorTerms []v1.NodeSele
}
return false
}
// NodeSelectorRequirementsAsSelector converts the []NodeSelectorRequirement api type into a struct that implements
// labels.Selector.
func NodeSelectorRequirementsAsSelector(nsm []v1.NodeSelectorRequirement) (labels.Selector, error) {
if len(nsm) == 0 {
return labels.Nothing(), nil
}
selector := labels.NewSelector()
for _, expr := range nsm {
var op selection.Operator
switch expr.Operator {
case v1.NodeSelectorOpIn:
op = selection.In
case v1.NodeSelectorOpNotIn:
op = selection.NotIn
case v1.NodeSelectorOpExists:
op = selection.Exists
case v1.NodeSelectorOpDoesNotExist:
op = selection.DoesNotExist
case v1.NodeSelectorOpGt:
op = selection.GreaterThan
case v1.NodeSelectorOpLt:
op = selection.LessThan
default:
return nil, fmt.Errorf("%q is not a valid node selector operator", expr.Operator)
}
r, err := labels.NewRequirement(expr.Key, op, expr.Values)
if err != nil {
return nil, err
}
selector = selector.Add(*r)
}
return selector, nil
}