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