4ac20ffc2b
add service mesh metrics remove unused circle yaml fix travis misconfiguration fix travis misconfiguration fix travis misconfiguration
119 lines
3.2 KiB
Go
119 lines
3.2 KiB
Go
/*
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Copyright 2018 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 predicate
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import (
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"sigs.k8s.io/controller-runtime/pkg/event"
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logf "sigs.k8s.io/controller-runtime/pkg/runtime/log"
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)
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var log = logf.KBLog.WithName("predicate").WithName("eventFilters")
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// Predicate filters events before enqueuing the keys.
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type Predicate interface {
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// Create returns true if the Create event should be processed
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Create(event.CreateEvent) bool
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// Delete returns true if the Delete event should be processed
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Delete(event.DeleteEvent) bool
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// Update returns true if the Update event should be processed
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Update(event.UpdateEvent) bool
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// Generic returns true if the Generic event should be processed
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Generic(event.GenericEvent) bool
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}
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var _ Predicate = Funcs{}
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var _ Predicate = ResourceVersionChangedPredicate{}
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// Funcs is a function that implements Predicate.
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type Funcs struct {
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// Create returns true if the Create event should be processed
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CreateFunc func(event.CreateEvent) bool
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// Delete returns true if the Delete event should be processed
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DeleteFunc func(event.DeleteEvent) bool
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// Update returns true if the Update event should be processed
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UpdateFunc func(event.UpdateEvent) bool
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// Generic returns true if the Generic event should be processed
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GenericFunc func(event.GenericEvent) bool
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}
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// Create implements Predicate
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func (p Funcs) Create(e event.CreateEvent) bool {
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if p.CreateFunc != nil {
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return p.CreateFunc(e)
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}
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return true
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}
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// Delete implements Predicate
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func (p Funcs) Delete(e event.DeleteEvent) bool {
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if p.DeleteFunc != nil {
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return p.DeleteFunc(e)
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}
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return true
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}
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// Update implements Predicate
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func (p Funcs) Update(e event.UpdateEvent) bool {
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if p.UpdateFunc != nil {
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return p.UpdateFunc(e)
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}
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return true
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}
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// Generic implements Predicate
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func (p Funcs) Generic(e event.GenericEvent) bool {
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if p.GenericFunc != nil {
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return p.GenericFunc(e)
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}
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return true
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}
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// ResourceVersionChangedPredicate implements a default update predicate function on resource version change
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type ResourceVersionChangedPredicate struct {
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Funcs
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}
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// Update implements default UpdateEvent filter for validating resource version change
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func (ResourceVersionChangedPredicate) Update(e event.UpdateEvent) bool {
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if e.MetaOld == nil {
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log.Error(nil, "UpdateEvent has no old metadata", "event", e)
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return false
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}
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if e.ObjectOld == nil {
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log.Error(nil, "GenericEvent has no old runtime object to update", "event", e)
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return false
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}
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if e.ObjectNew == nil {
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log.Error(nil, "GenericEvent has no new runtime object for update", "event", e)
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return false
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}
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if e.MetaNew == nil {
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log.Error(nil, "UpdateEvent has no new metadata", "event", e)
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return false
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}
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if e.MetaNew.GetResourceVersion() == e.MetaOld.GetResourceVersion() {
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return false
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}
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return true
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}
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