mirror of
https://github.com/seaweedfs/seaweedfs.git
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57 lines
1.8 KiB
Go
57 lines
1.8 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/pb/filer_pb"
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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/storage/needle"
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"github.com/chrislusf/seaweedfs/weed/storage/types"
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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 := &filer_pb.RemoteConf{
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Type: req.RemoteType,
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Name: req.RemoteName,
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S3AccessKey: req.S3AccessKey,
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S3SecretKey: req.S3SecretKey,
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S3Region: req.S3Region,
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S3Endpoint: req.S3Endpoint,
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}
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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 := &filer_pb.RemoteStorageLocation{
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Name: req.RemoteName,
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Bucket: req.RemoteBucket,
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Path: req.RemotePath,
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}
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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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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 _, err = vs.store.WriteVolumeNeedle(v.Id, n, true, false); err != nil {
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return nil, fmt.Errorf("write needle %d size %d: %v", req.NeedleId, req.Size, err)
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}
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return resp, nil
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}
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