mirror of
https://github.com/seaweedfs/seaweedfs.git
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124 lines
3.2 KiB
Go
124 lines
3.2 KiB
Go
package filersink
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import (
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"context"
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"fmt"
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"strings"
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"sync"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/operation"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"github.com/chrislusf/seaweedfs/weed/util"
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)
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func (fs *FilerSink) replicateChunks(sourceChunks []*filer_pb.FileChunk) (replicatedChunks []*filer_pb.FileChunk, err error) {
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if len(sourceChunks) == 0 {
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return
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}
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var wg sync.WaitGroup
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for _, sourceChunk := range sourceChunks {
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wg.Add(1)
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go func(chunk *filer_pb.FileChunk) {
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defer wg.Done()
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replicatedChunk, e := fs.replicateOneChunk(chunk)
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if e != nil {
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err = e
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}
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replicatedChunks = append(replicatedChunks, replicatedChunk)
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}(sourceChunk)
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}
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wg.Wait()
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return
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}
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func (fs *FilerSink) replicateOneChunk(sourceChunk *filer_pb.FileChunk) (*filer_pb.FileChunk, error) {
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fileId, err := fs.fetchAndWrite(sourceChunk)
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if err != nil {
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return nil, fmt.Errorf("copy %s: %v", sourceChunk.FileId, err)
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}
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return &filer_pb.FileChunk{
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FileId: fileId,
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Offset: sourceChunk.Offset,
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Size: sourceChunk.Size,
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Mtime: sourceChunk.Mtime,
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ETag: sourceChunk.ETag,
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SourceFileId: sourceChunk.FileId,
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}, nil
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}
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func (fs *FilerSink) fetchAndWrite(sourceChunk *filer_pb.FileChunk) (fileId string, err error) {
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filename, header, readCloser, err := fs.filerSource.ReadPart(sourceChunk.FileId)
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if err != nil {
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return "", fmt.Errorf("read part %s: %v", sourceChunk.FileId, err)
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}
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defer readCloser.Close()
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var host string
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if err := fs.withFilerClient(func(client filer_pb.SeaweedFilerClient) error {
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request := &filer_pb.AssignVolumeRequest{
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Count: 1,
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Replication: fs.replication,
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Collection: fs.collection,
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TtlSec: fs.ttlSec,
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DataCenter: fs.dataCenter,
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}
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resp, err := client.AssignVolume(context.Background(), request)
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if err != nil {
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glog.V(0).Infof("assign volume failure %v: %v", request, err)
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return err
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}
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fileId, host = resp.FileId, resp.Url
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return nil
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}); err != nil {
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return "", fmt.Errorf("filerGrpcAddress assign volume: %v", err)
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}
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fileUrl := fmt.Sprintf("http://%s/%s", host, fileId)
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glog.V(4).Infof("replicating %s to %s header:%+v", filename, fileUrl, header)
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uploadResult, err := operation.Upload(fileUrl, filename, readCloser,
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"gzip" == header.Get("Content-Encoding"), header.Get("Content-Type"), nil, "")
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if err != nil {
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glog.V(0).Infof("upload data %v to %s: %v", filename, fileUrl, err)
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return "", fmt.Errorf("upload data: %v", err)
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}
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if uploadResult.Error != "" {
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glog.V(0).Infof("upload failure %v to %s: %v", filename, fileUrl, err)
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return "", fmt.Errorf("upload result: %v", uploadResult.Error)
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}
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return
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}
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func (fs *FilerSink) withFilerClient(fn func(filer_pb.SeaweedFilerClient) error) error {
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grpcConnection, err := util.GrpcDial(fs.grpcAddress)
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if err != nil {
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return fmt.Errorf("fail to dial %s: %v", fs.grpcAddress, err)
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}
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defer grpcConnection.Close()
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client := filer_pb.NewSeaweedFilerClient(grpcConnection)
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return fn(client)
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}
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func volumeId(fileId string) string {
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lastCommaIndex := strings.LastIndex(fileId, ",")
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if lastCommaIndex > 0 {
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return fileId[:lastCommaIndex]
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}
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return fileId
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}
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