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128 lines
2.5 KiB
128 lines
2.5 KiB
package B2Sink
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import (
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"context"
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"github.com/chrislusf/seaweedfs/weed/filer2"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"github.com/chrislusf/seaweedfs/weed/replication/sink"
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"github.com/chrislusf/seaweedfs/weed/replication/source"
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"github.com/chrislusf/seaweedfs/weed/util"
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"github.com/kurin/blazer/b2"
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)
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type B2Sink struct {
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client *b2.Client
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bucket string
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dir string
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filerSource *source.FilerSource
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}
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func init() {
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sink.Sinks = append(sink.Sinks, &B2Sink{})
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}
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func (g *B2Sink) GetName() string {
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return "backblaze"
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}
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func (g *B2Sink) GetSinkToDirectory() string {
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return g.dir
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}
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func (g *B2Sink) Initialize(configuration util.Configuration) error {
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return g.initialize(
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configuration.GetString("account_id"),
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configuration.GetString("account_key"),
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configuration.GetString("bucket"),
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configuration.GetString("directory"),
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)
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}
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func (g *B2Sink) SetSourceFiler(s *source.FilerSource) {
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g.filerSource = s
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}
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func (g *B2Sink) initialize(accountId, accountKey, bucket, dir string) error {
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ctx := context.Background()
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client, err := b2.NewClient(ctx, accountId, accountKey)
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if err != nil {
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return nil
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}
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g.client = client
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g.bucket = bucket
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g.dir = dir
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return nil
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}
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func (g *B2Sink) DeleteEntry(key string, isDirectory, deleteIncludeChunks bool) error {
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if isDirectory {
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key = key + "/"
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}
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ctx := context.Background()
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bucket, err := g.client.Bucket(ctx, g.bucket)
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if err != nil {
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return err
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}
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targetObject := bucket.Object(key)
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return targetObject.Delete(ctx)
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}
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func (g *B2Sink) CreateEntry(key string, entry *filer_pb.Entry) error {
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if entry.IsDirectory {
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return nil
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}
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totalSize := filer2.TotalSize(entry.Chunks)
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chunkViews := filer2.ViewFromChunks(entry.Chunks, 0, int(totalSize))
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ctx := context.Background()
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bucket, err := g.client.Bucket(ctx, g.bucket)
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if err != nil {
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return err
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}
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targetObject := bucket.Object(key)
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writer := targetObject.NewWriter(ctx)
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for _, chunk := range chunkViews {
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fileUrl, err := g.filerSource.LookupFileId(chunk.FileId)
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if err != nil {
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return err
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}
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var writeErr error
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_, readErr := util.ReadUrlAsStream(fileUrl, chunk.Offset, int(chunk.Size), func(data []byte) {
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_, err := writer.Write(data)
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if err != nil {
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writeErr = err
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}
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})
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if readErr != nil {
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return readErr
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}
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if writeErr != nil {
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return writeErr
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}
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}
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return writer.Close()
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}
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func (g *B2Sink) UpdateEntry(key string, oldEntry, newEntry *filer_pb.Entry, deleteIncludeChunks bool) (foundExistingEntry bool, err error) {
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// TODO improve efficiency
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return false, nil
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}
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