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45 lines
1.3 KiB
Go
45 lines
1.3 KiB
Go
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package informers
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import (
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"fmt"
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"github.com/docker/cli/kubernetes/compose/v1beta2"
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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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// GenericInformer is type of SharedIndexInformer which will locate and delegate to other
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// sharedInformers based on type
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type GenericInformer interface {
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Informer() cache.SharedIndexInformer
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Lister() cache.GenericLister
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}
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type genericInformer struct {
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informer cache.SharedIndexInformer
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resource schema.GroupResource
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}
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// Informer returns the SharedIndexInformer.
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func (f *genericInformer) Informer() cache.SharedIndexInformer {
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return f.informer
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}
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// Lister returns the GenericLister.
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func (f *genericInformer) Lister() cache.GenericLister {
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return cache.NewGenericLister(f.Informer().GetIndexer(), f.resource)
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}
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// ForResource gives generic access to a shared informer of the matching type
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// TODO extend this to unknown resources with a client pool
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func (f *sharedInformerFactory) ForResource(resource schema.GroupVersionResource) (GenericInformer, error) {
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switch resource {
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// Group=Compose, Version=V1beta1
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case v1beta2.SchemeGroupVersion.WithResource("stacks"):
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return &genericInformer{resource: resource.GroupResource(), informer: f.Compose().V1beta2().Stacks().Informer()}, nil
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}
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return nil, fmt.Errorf("no informer found for %v", resource)
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}
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