func newSnapshotReaderCloser(snapshot dstorage.Snapshot) io.ReadCloser {
pr, pw := io.Pipe()
go func() {
_, err := snapshot.WriteTo(pw)
pw.CloseWithError(err)
snapshot.Close()
}()
return pr
}
func newSnapshot(r raftpb.Snapshot, kv dstorage.Snapshot) *snapshot {
done := make(chan struct{})
pr, pw := io.Pipe()
go func() {
_, err := kv.WriteTo(pw)
pw.CloseWithError(err)
kv.Close()
close(done)
}()
return &snapshot{
r: r,
ReadCloser: pr,
done: done,
}
}