package B2Sink import ( "context" "strings" "github.com/chrislusf/seaweedfs/weed/filer2" "github.com/chrislusf/seaweedfs/weed/pb/filer_pb" "github.com/chrislusf/seaweedfs/weed/replication/sink" "github.com/chrislusf/seaweedfs/weed/replication/source" "github.com/chrislusf/seaweedfs/weed/util" "github.com/kurin/blazer/b2" ) type B2Sink struct { client *b2.Client bucket string dir string filerSource *source.FilerSource } func init() { sink.Sinks = append(sink.Sinks, &B2Sink{}) } func (g *B2Sink) GetName() string { return "backblaze" } func (g *B2Sink) GetSinkToDirectory() string { return g.dir } func (g *B2Sink) Initialize(configuration util.Configuration, prefix string) error { return g.initialize( configuration.GetString(prefix+"b2_account_id"), configuration.GetString(prefix+"b2_master_application_key"), configuration.GetString(prefix+"bucket"), configuration.GetString(prefix+"directory"), ) } func (g *B2Sink) SetSourceFiler(s *source.FilerSource) { g.filerSource = s } func (g *B2Sink) initialize(accountId, accountKey, bucket, dir string) error { ctx := context.Background() client, err := b2.NewClient(ctx, accountId, accountKey) if err != nil { return err } g.client = client g.bucket = bucket g.dir = dir return nil } func (g *B2Sink) DeleteEntry(ctx context.Context, key string, isDirectory, deleteIncludeChunks bool) error { key = cleanKey(key) if isDirectory { key = key + "/" } bucket, err := g.client.Bucket(ctx, g.bucket) if err != nil { return err } targetObject := bucket.Object(key) return targetObject.Delete(ctx) } func (g *B2Sink) CreateEntry(ctx context.Context, key string, entry *filer_pb.Entry) error { key = cleanKey(key) if entry.IsDirectory { return nil } totalSize := filer2.TotalSize(entry.Chunks) chunkViews := filer2.ViewFromChunks(entry.Chunks, 0, int(totalSize)) bucket, err := g.client.Bucket(ctx, g.bucket) if err != nil { return err } targetObject := bucket.Object(key) writer := targetObject.NewWriter(ctx) for _, chunk := range chunkViews { fileUrl, err := g.filerSource.LookupFileId(ctx, chunk.FileId) if err != nil { return err } var writeErr error _, readErr := util.ReadUrlAsStream(fileUrl, chunk.Offset, int(chunk.Size), func(data []byte) { _, err := writer.Write(data) if err != nil { writeErr = err } }) if readErr != nil { return readErr } if writeErr != nil { return writeErr } } return writer.Close() } func (g *B2Sink) UpdateEntry(ctx context.Context, key string, oldEntry *filer_pb.Entry, newParentPath string, newEntry *filer_pb.Entry, deleteIncludeChunks bool) (foundExistingEntry bool, err error) { key = cleanKey(key) // TODO improve efficiency return false, nil } func cleanKey(key string) string { if strings.HasPrefix(key, "/") { key = key[1:] } return key }