package weed_server import ( "context" "fmt" "github.com/chrislusf/seaweedfs/weed/operation" "github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb" "github.com/chrislusf/seaweedfs/weed/remote_storage" "github.com/chrislusf/seaweedfs/weed/security" "github.com/chrislusf/seaweedfs/weed/storage/needle" "github.com/chrislusf/seaweedfs/weed/storage/types" "sync" "time" ) func (vs *VolumeServer) FetchAndWriteNeedle(ctx context.Context, req *volume_server_pb.FetchAndWriteNeedleRequest) (resp *volume_server_pb.FetchAndWriteNeedleResponse, err error) { resp = &volume_server_pb.FetchAndWriteNeedleResponse{} v := vs.store.GetVolume(needle.VolumeId(req.VolumeId)) if v == nil { return nil, fmt.Errorf("not found volume id %d", req.VolumeId) } remoteConf := req.RemoteConf client, getClientErr := remote_storage.GetRemoteStorage(remoteConf) if getClientErr != nil { return nil, fmt.Errorf("get remote client: %v", getClientErr) } remoteStorageLocation := req.RemoteLocation data, ReadRemoteErr := client.ReadFile(remoteStorageLocation, req.Offset, req.Size) if ReadRemoteErr != nil { return nil, fmt.Errorf("read from remote %+v: %v", remoteStorageLocation, ReadRemoteErr) } var wg sync.WaitGroup wg.Add(1) go func() { defer wg.Done() n := new(needle.Needle) n.Id = types.NeedleId(req.NeedleId) n.Cookie = types.Cookie(req.Cookie) n.Data, n.DataSize = data, uint32(len(data)) // copied from *Needle.prepareWriteBuffer() n.Size = 4 + types.Size(n.DataSize) + 1 n.Checksum = needle.NewCRC(n.Data) n.LastModified = uint64(time.Now().Unix()) n.SetHasLastModifiedDate() if _, localWriteErr := vs.store.WriteVolumeNeedle(v.Id, n, true, false); localWriteErr != nil { if err == nil { err = fmt.Errorf("local write needle %d size %d: %v", req.NeedleId, req.Size, err) } } }() if len(req.Replicas) > 0 { fileId := needle.NewFileId(v.Id, req.NeedleId, req.Cookie) for _, replica := range req.Replicas { wg.Add(1) go func(targetVolumeServer string) { defer wg.Done() uploadOption := &operation.UploadOption{ UploadUrl: fmt.Sprintf("http://%s/%s?type=replicate", targetVolumeServer, fileId.String()), Filename: "", Cipher: false, IsInputCompressed: false, MimeType: "", PairMap: nil, Jwt: security.EncodedJwt(req.Auth), } if _, replicaWriteErr := operation.UploadData(data, uploadOption); replicaWriteErr != nil { if err == nil { err = fmt.Errorf("remote write needle %d size %d: %v", req.NeedleId, req.Size, err) } } }(replica.Url) } } wg.Wait() return resp, err }