mirror of
https://github.com/seaweedfs/seaweedfs.git
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101 lines
3 KiB
Go
101 lines
3 KiB
Go
package weed_server
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import (
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"fmt"
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"os"
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"time"
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"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
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"github.com/chrislusf/seaweedfs/weed/storage/backend"
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"github.com/chrislusf/seaweedfs/weed/storage/needle"
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)
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// VolumeTierMoveDatToRemote copy dat file to a remote tier
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func (vs *VolumeServer) VolumeTierMoveDatToRemote(req *volume_server_pb.VolumeTierMoveDatToRemoteRequest, stream volume_server_pb.VolumeServer_VolumeTierMoveDatToRemoteServer) error {
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// find existing volume
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v := vs.store.GetVolume(needle.VolumeId(req.VolumeId))
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if v == nil {
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return fmt.Errorf("volume %d not found", req.VolumeId)
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}
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// verify the collection
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if v.Collection != req.Collection {
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return fmt.Errorf("existing collection:%v unexpected input: %v", v.Collection, req.Collection)
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}
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// locate the disk file
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diskFile, ok := v.DataBackend.(*backend.DiskFile)
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if !ok {
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return fmt.Errorf("volume %d is not on local disk", req.VolumeId)
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}
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// check valid storage backend type
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backendStorage, found := backend.BackendStorages[req.DestinationBackendName]
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if !found {
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var keys []string
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for key := range backend.BackendStorages {
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keys = append(keys, key)
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}
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return fmt.Errorf("destination %s not found, suppported: %v", req.DestinationBackendName, keys)
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}
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// check whether the existing backend storage is the same as requested
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// if same, skip
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backendType, backendId := backend.BackendNameToTypeId(req.DestinationBackendName)
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for _, remoteFile := range v.GetVolumeInfo().GetFiles() {
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if remoteFile.BackendType == backendType && remoteFile.BackendId == backendId {
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return fmt.Errorf("destination %s already exists", req.DestinationBackendName)
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}
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}
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startTime := time.Now()
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fn := func(progressed int64, percentage float32) error {
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now := time.Now()
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if now.Sub(startTime) < time.Second {
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return nil
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}
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startTime = now
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return stream.Send(&volume_server_pb.VolumeTierMoveDatToRemoteResponse{
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Processed: progressed,
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ProcessedPercentage: percentage,
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})
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}
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// remember the file original source
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attributes := make(map[string]string)
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attributes["volumeId"] = v.Id.String()
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attributes["collection"] = v.Collection
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attributes["ext"] = ".dat"
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// copy the data file
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key, size, err := backendStorage.CopyFile(diskFile.File, attributes, fn)
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if err != nil {
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return fmt.Errorf("backend %s copy file %s: %v", req.DestinationBackendName, diskFile.Name(), err)
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}
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// save the remote file to volume tier info
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v.GetVolumeInfo().Files = append(v.GetVolumeInfo().GetFiles(), &volume_server_pb.RemoteFile{
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BackendType: backendType,
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BackendId: backendId,
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Key: key,
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Offset: 0,
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FileSize: uint64(size),
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ModifiedTime: uint64(time.Now().Unix()),
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Extension: ".dat",
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})
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if err := v.SaveVolumeInfo(); err != nil {
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return fmt.Errorf("volume %d fail to save remote file info: %v", v.Id, err)
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}
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if err := v.LoadRemoteFile(); err != nil {
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return fmt.Errorf("volume %d fail to load remote file: %v", v.Id, err)
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}
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if !req.KeepLocalDatFile {
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os.Remove(v.FileName(".dat"))
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}
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return nil
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}
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