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130 lines
2.9 KiB
130 lines
2.9 KiB
package B2Sink
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import (
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"context"
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"github.com/chrislusf/seaweedfs/weed/replication/repl_util"
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"strings"
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"github.com/chrislusf/seaweedfs/weed/filer"
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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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isIncremental bool
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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) IsIncremental() bool {
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return g.isIncremental
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}
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func (g *B2Sink) Initialize(configuration util.Configuration, prefix string) error {
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g.isIncremental = configuration.GetBool(prefix + "is_incremental")
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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, signatures []int32) 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, signatures []int32) 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 := filer.FileSize(entry)
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chunkViews := filer.ViewFromChunks(g.filerSource.LookupFileId, 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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writeFunc := func(data []byte) error {
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_, writeErr := writer.Write(data)
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return writeErr
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}
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defer writer.Close()
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if err := repl_util.CopyFromChunkViews(chunkViews, g.filerSource, writeFunc); err != nil {
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return err
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}
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return nil
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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, signatures []int32) (foundExistingEntry bool, err error) {
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key = cleanKey(key)
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return true, g.CreateEntry(key, newEntry, signatures)
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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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