forked from etcd-io/etcd
/
snapshot_recovery_response.go
69 lines (57 loc) · 1.69 KB
/
snapshot_recovery_response.go
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package raft
import (
"code.google.com/p/goprotobuf/proto"
"github.com/coreos/raft/protobuf"
"io"
"io/ioutil"
)
// The response returned from a server appending entries to the log.
type SnapshotRecoveryResponse struct {
Term uint64
Success bool
CommitIndex uint64
}
//------------------------------------------------------------------------------
//
// Constructors
//
//------------------------------------------------------------------------------
// Creates a new Snapshot response.
func newSnapshotRecoveryResponse(term uint64, success bool, commitIndex uint64) *SnapshotRecoveryResponse {
return &SnapshotRecoveryResponse{
Term: term,
Success: success,
CommitIndex: commitIndex,
}
}
// Encodes the SnapshotRecoveryResponse to a buffer. Returns the number of bytes
// written and any error that may have occurred.
func (req *SnapshotRecoveryResponse) Encode(w io.Writer) (int, error) {
pb := &protobuf.ProtoSnapshotRecoveryResponse{
Term: proto.Uint64(req.Term),
Success: proto.Bool(req.Success),
CommitIndex: proto.Uint64(req.CommitIndex),
}
p, err := proto.Marshal(pb)
if err != nil {
return -1, err
}
return w.Write(p)
}
// Decodes the SnapshotRecoveryResponse from a buffer. Returns the number of bytes read and
// any error that occurs.
func (req *SnapshotRecoveryResponse) Decode(r io.Reader) (int, error) {
data, err := ioutil.ReadAll(r)
if err != nil {
return 0, err
}
totalBytes := len(data)
pb := &protobuf.ProtoSnapshotRecoveryResponse{}
if err := proto.Unmarshal(data, pb); err != nil {
return -1, err
}
req.Term = pb.GetTerm()
req.Success = pb.GetSuccess()
req.CommitIndex = pb.GetCommitIndex()
return totalBytes, nil
}