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