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55 lines
1.7 KiB
55 lines
1.7 KiB
/* |
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Copyright 2016 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 v1 |
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// Clones the given selector and returns a new selector with the given key and value added. |
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// Returns the given selector, if labelKey is empty. |
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func CloneSelectorAndAddLabel(selector *LabelSelector, labelKey, labelValue string) *LabelSelector { |
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if labelKey == "" { |
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// Don't need to add a label. |
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return selector |
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} |
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// Clone. |
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newSelector := selector.DeepCopy() |
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if newSelector.MatchLabels == nil { |
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newSelector.MatchLabels = make(map[string]string) |
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} |
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newSelector.MatchLabels[labelKey] = labelValue |
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return newSelector |
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} |
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// AddLabelToSelector returns a selector with the given key and value added to the given selector's MatchLabels. |
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func AddLabelToSelector(selector *LabelSelector, labelKey, labelValue string) *LabelSelector { |
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if labelKey == "" { |
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// Don't need to add a label. |
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return selector |
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} |
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if selector.MatchLabels == nil { |
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selector.MatchLabels = make(map[string]string) |
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} |
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selector.MatchLabels[labelKey] = labelValue |
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return selector |
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} |
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// SelectorHasLabel checks if the given selector contains the given label key in its MatchLabels |
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func SelectorHasLabel(selector *LabelSelector, labelKey string) bool { |
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return len(selector.MatchLabels[labelKey]) > 0 |
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}
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