mirror of
https://github.com/seaweedfs/seaweedfs.git
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140 lines
2.8 KiB
Go
140 lines
2.8 KiB
Go
package B2Sink
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import (
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"context"
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"strings"
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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, prefix string) error {
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return g.initialize(
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configuration.GetString(prefix+"b2_account_id"),
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configuration.GetString(prefix+"b2_master_application_key"),
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configuration.GetString(prefix+"bucket"),
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configuration.GetString(prefix+"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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client, err := b2.NewClient(context.Background(), accountId, accountKey)
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if err != nil {
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return err
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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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key = cleanKey(key)
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if isDirectory {
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key = key + "/"
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}
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bucket, err := g.client.Bucket(context.Background(), 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(context.Background())
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}
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func (g *B2Sink) CreateEntry(key string, entry *filer_pb.Entry) error {
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key = cleanKey(key)
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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, int64(totalSize))
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bucket, err := g.client.Bucket(context.Background(), 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(context.Background())
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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, nil, false, chunk.IsFullChunk(), 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 *filer_pb.Entry, newParentPath string, newEntry *filer_pb.Entry, deleteIncludeChunks bool) (foundExistingEntry bool, err error) {
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key = cleanKey(key)
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// TODO improve efficiency
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return false, nil
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}
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func cleanKey(key string) string {
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if strings.HasPrefix(key, "/") {
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key = key[1:]
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}
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return key
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}
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