57 lines
2 KiB
Go
57 lines
2 KiB
Go
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/*
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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 v1
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// MatchToleration checks if the toleration matches tolerationToMatch. Tolerations are unique by <key,effect,operator,value>,
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// if the two tolerations have same <key,effect,operator,value> combination, regard as they match.
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// TODO: uniqueness check for tolerations in api validations.
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func (t *Toleration) MatchToleration(tolerationToMatch *Toleration) bool {
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return t.Key == tolerationToMatch.Key &&
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t.Effect == tolerationToMatch.Effect &&
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t.Operator == tolerationToMatch.Operator &&
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t.Value == tolerationToMatch.Value
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}
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// ToleratesTaint checks if the toleration tolerates the taint.
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// The matching follows the rules below:
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// (1) Empty toleration.effect means to match all taint effects,
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// otherwise taint effect must equal to toleration.effect.
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// (2) If toleration.operator is 'Exists', it means to match all taint values.
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// (3) Empty toleration.key means to match all taint keys.
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// If toleration.key is empty, toleration.operator must be 'Exists';
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// this combination means to match all taint values and all taint keys.
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func (t *Toleration) ToleratesTaint(taint *Taint) bool {
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if len(t.Effect) > 0 && t.Effect != taint.Effect {
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return false
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}
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if len(t.Key) > 0 && t.Key != taint.Key {
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return false
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}
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// TODO: Use proper defaulting when Toleration becomes a field of PodSpec
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switch t.Operator {
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// empty operator means Equal
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case "", TolerationOpEqual:
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return t.Value == taint.Value
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case TolerationOpExists:
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return true
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default:
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return false
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}
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}
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