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package informers
import (
"fmt"
"github.com/docker/compose-on-kubernetes/api/compose/v1alpha3"
"github.com/docker/compose-on-kubernetes/api/compose/v1beta2"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/client-go/tools/cache"
)
// GenericInformer is type of SharedIndexInformer which will locate and delegate to other
// sharedInformers based on type
type GenericInformer interface {
Informer() cache.SharedIndexInformer
Lister() cache.GenericLister
}
type genericInformer struct {
informer cache.SharedIndexInformer
resource schema.GroupResource
}
// Informer returns the SharedIndexInformer.
func (f *genericInformer) Informer() cache.SharedIndexInformer {
return f.informer
}
// Lister returns the GenericLister.
func (f *genericInformer) Lister() cache.GenericLister {
return cache.NewGenericLister(f.Informer().GetIndexer(), f.resource)
}
// ForResource gives generic access to a shared informer of the matching type
// TODO extend this to unknown resources with a client pool
func (f *sharedInformerFactory) ForResource(resource schema.GroupVersionResource) (GenericInformer, error) {
switch resource {
// Group=Compose, Version=V1beta1
case v1beta2.SchemeGroupVersion.WithResource("stacks"):
return &genericInformer{resource: resource.GroupResource(), informer: f.Compose().V1beta2().Stacks().Informer()}, nil
case v1alpha3.SchemeGroupVersion.WithResource("stacks"):
return &genericInformer{resource: resource.GroupResource(), informer: f.Compose().V1alpha3().Stacks().Informer()}, nil
}
return nil, fmt.Errorf("no informer found for %v", resource)
}
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