| /* |
| Copyright 2017 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 |
| |
| // MatchToleration checks if the toleration matches tolerationToMatch. Tolerations are unique by <key,effect,operator,value>, |
| // if the two tolerations have same <key,effect,operator,value> combination, regard as they match. |
| // TODO: uniqueness check for tolerations in api validations. |
| func (t *Toleration) MatchToleration(tolerationToMatch *Toleration) bool { |
| return t.Key == tolerationToMatch.Key && |
| t.Effect == tolerationToMatch.Effect && |
| t.Operator == tolerationToMatch.Operator && |
| t.Value == tolerationToMatch.Value |
| } |
| |
| // ToleratesTaint checks if the toleration tolerates the taint. |
| // The matching follows the rules below: |
| // (1) Empty toleration.effect means to match all taint effects, |
| // otherwise taint effect must equal to toleration.effect. |
| // (2) If toleration.operator is 'Exists', it means to match all taint values. |
| // (3) Empty toleration.key means to match all taint keys. |
| // If toleration.key is empty, toleration.operator must be 'Exists'; |
| // this combination means to match all taint values and all taint keys. |
| func (t *Toleration) ToleratesTaint(taint *Taint) bool { |
| if len(t.Effect) > 0 && t.Effect != taint.Effect { |
| return false |
| } |
| |
| if len(t.Key) > 0 && t.Key != taint.Key { |
| return false |
| } |
| |
| // TODO: Use proper defaulting when Toleration becomes a field of PodSpec |
| switch t.Operator { |
| // empty operator means Equal |
| case "", TolerationOpEqual: |
| return t.Value == taint.Value |
| case TolerationOpExists: |
| return true |
| default: |
| return false |
| } |
| } |