77 lines
2.0 KiB
Go
77 lines
2.0 KiB
Go
/*
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Copyright The containerd 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 content
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import (
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"context"
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eventstypes "github.com/containerd/containerd/api/events"
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"github.com/containerd/containerd/content"
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"github.com/containerd/containerd/events"
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"github.com/containerd/containerd/metadata"
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"github.com/containerd/containerd/plugin"
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"github.com/containerd/containerd/services"
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digest "github.com/opencontainers/go-digest"
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)
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// store wraps content.Store with proper event published.
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type store struct {
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content.Store
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publisher events.Publisher
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}
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func init() {
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plugin.Register(&plugin.Registration{
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Type: plugin.ServicePlugin,
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ID: services.ContentService,
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Requires: []plugin.Type{
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plugin.EventPlugin,
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plugin.MetadataPlugin,
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},
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InitFn: func(ic *plugin.InitContext) (interface{}, error) {
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m, err := ic.Get(plugin.MetadataPlugin)
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if err != nil {
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return nil, err
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}
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ep, err := ic.Get(plugin.EventPlugin)
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if err != nil {
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return nil, err
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}
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s, err := newContentStore(m.(*metadata.DB).ContentStore(), ep.(events.Publisher))
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return s, err
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},
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})
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}
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func newContentStore(cs content.Store, publisher events.Publisher) (content.Store, error) {
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return &store{
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Store: cs,
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publisher: publisher,
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}, nil
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}
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func (s *store) Delete(ctx context.Context, dgst digest.Digest) error {
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if err := s.Store.Delete(ctx, dgst); err != nil {
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return err
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}
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// TODO: Consider whether we should return error here.
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return s.publisher.Publish(ctx, "/content/delete", &eventstypes.ContentDelete{
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Digest: dgst,
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})
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}
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