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Diffstat (limited to 'vendor/k8s.io/apimachinery/pkg/apis/meta/v1/labels.go')
-rw-r--r-- | vendor/k8s.io/apimachinery/pkg/apis/meta/v1/labels.go | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/vendor/k8s.io/apimachinery/pkg/apis/meta/v1/labels.go b/vendor/k8s.io/apimachinery/pkg/apis/meta/v1/labels.go new file mode 100644 index 000000000..8b4c0423e --- /dev/null +++ b/vendor/k8s.io/apimachinery/pkg/apis/meta/v1/labels.go @@ -0,0 +1,75 @@ +/* +Copyright 2016 The Kubernetes 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 v1 + +// Clones the given selector and returns a new selector with the given key and value added. +// Returns the given selector, if labelKey is empty. +func CloneSelectorAndAddLabel(selector *LabelSelector, labelKey, labelValue string) *LabelSelector { + if labelKey == "" { + // Don't need to add a label. + return selector + } + + // Clone. + newSelector := new(LabelSelector) + + // TODO(madhusudancs): Check if you can use deepCopy_extensions_LabelSelector here. + newSelector.MatchLabels = make(map[string]string) + if selector.MatchLabels != nil { + for key, val := range selector.MatchLabels { + newSelector.MatchLabels[key] = val + } + } + newSelector.MatchLabels[labelKey] = labelValue + + if selector.MatchExpressions != nil { + newMExps := make([]LabelSelectorRequirement, len(selector.MatchExpressions)) + for i, me := range selector.MatchExpressions { + newMExps[i].Key = me.Key + newMExps[i].Operator = me.Operator + if me.Values != nil { + newMExps[i].Values = make([]string, len(me.Values)) + copy(newMExps[i].Values, me.Values) + } else { + newMExps[i].Values = nil + } + } + newSelector.MatchExpressions = newMExps + } else { + newSelector.MatchExpressions = nil + } + + return newSelector +} + +// AddLabelToSelector returns a selector with the given key and value added to the given selector's MatchLabels. +func AddLabelToSelector(selector *LabelSelector, labelKey, labelValue string) *LabelSelector { + if labelKey == "" { + // Don't need to add a label. + return selector + } + if selector.MatchLabels == nil { + selector.MatchLabels = make(map[string]string) + } + selector.MatchLabels[labelKey] = labelValue + return selector +} + +// SelectorHasLabel checks if the given selector contains the given label key in its MatchLabels +func SelectorHasLabel(selector *LabelSelector, labelKey string) bool { + return len(selector.MatchLabels[labelKey]) > 0 +} |