1// Copyright 2016 The etcd Authors
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15package v3rpc
16
17import (
18	"github.com/coreos/etcd/etcdserver"
19	pb "github.com/coreos/etcd/etcdserver/etcdserverpb"
20)
21
22type header struct {
23	clusterID int64
24	memberID  int64
25	raftTimer etcdserver.RaftTimer
26	rev       func() int64
27}
28
29func newHeader(s *etcdserver.EtcdServer) header {
30	return header{
31		clusterID: int64(s.Cluster().ID()),
32		memberID:  int64(s.ID()),
33		raftTimer: s,
34		rev:       func() int64 { return s.KV().Rev() },
35	}
36}
37
38// fill populates pb.ResponseHeader using etcdserver information
39func (h *header) fill(rh *pb.ResponseHeader) {
40	rh.ClusterId = uint64(h.clusterID)
41	rh.MemberId = uint64(h.memberID)
42	rh.RaftTerm = h.raftTimer.Term()
43	if rh.Revision == 0 {
44		rh.Revision = h.rev()
45	}
46}
47