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package filer
import (
"fmt"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"io"
)
func (entry *Entry) IsRemoteOnly() bool {
return len(entry.Chunks) == 0 && entry.Remote != nil && entry.Remote.Size > 0
}
func (f *Filer) ReadRemote(w io.Writer, entry *Entry, offset int64, size int64) error {
client, _, found := f.RemoteStorage.GetRemoteStorageClient(entry.Remote.StorageName)
if !found {
return fmt.Errorf("remote storage %v not found", entry.Remote.StorageName)
}
mountDir, remoteLoation := f.RemoteStorage.FindMountDirectory(entry.FullPath)
remoteFullPath := remoteLoation.Path + string(entry.FullPath[len(mountDir):])
sourceLoc := &filer_pb.RemoteStorageLocation{
Name: remoteLoation.Name,
Bucket: remoteLoation.Bucket,
Path: remoteFullPath,
}
client.ReadFile(sourceLoc, offset, size, func(w io.Writer) error {
return nil
})
return nil
}
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