mirror of https://github.com/knative/pkg.git
47 lines
1.4 KiB
Go
47 lines
1.4 KiB
Go
/*
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Copyright 2018 The Knative 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 duck
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import (
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"context"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/client-go/tools/cache"
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)
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// EnqueueInformerFactory implements InformerFactory by delegating to another
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// InformerFactory, but attaching a ResourceEventHandler to the informer.
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type EnqueueInformerFactory struct {
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Delegate InformerFactory
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EventHandler cache.ResourceEventHandler
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}
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// Check that EnqueueInformerFactory implements InformerFactory.
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var _ InformerFactory = (*EnqueueInformerFactory)(nil)
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// Get implements InformerFactory.
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func (cif *EnqueueInformerFactory) Get(ctx context.Context, gvr schema.GroupVersionResource) (cache.SharedIndexInformer, cache.GenericLister, error) {
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inf, lister, err := cif.Delegate.Get(ctx, gvr)
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if err != nil {
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return nil, nil, err
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}
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// If there is an informer, attach our event handler.
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inf.AddEventHandler(cif.EventHandler)
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return inf, lister, nil
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}
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