Revision 176222a2f48a11f65e132d454b42fa97ee6218fe authored by Yicheng Qin on 25 June 2015, 21:10:43 UTC, committed by Yicheng Qin on 25 June 2015, 21:10:43 UTC
1 parent 92e3895
status.go
// Copyright 2015 CoreOS, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package raft
import (
"fmt"
"log"
pb "github.com/coreos/etcd/raft/raftpb"
)
type Status struct {
ID uint64
pb.HardState
SoftState
Applied uint64
Progress map[uint64]Progress
}
// getStatus gets a copy of the current raft status.
func getStatus(r *raft) Status {
s := Status{ID: r.id}
s.HardState = r.HardState
s.SoftState = *r.softState()
s.Applied = r.raftLog.applied
if s.RaftState == StateLeader {
s.Progress = make(map[uint64]Progress)
for id, p := range r.prs {
s.Progress[id] = *p
}
}
return s
}
// TODO: try to simplify this by introducing ID type into raft
func (s Status) MarshalJSON() ([]byte, error) {
j := fmt.Sprintf(`{"id":"%x","term":%d,"vote":"%x","commit":%d,"lead":"%x","raftState":"%s","progress":{`,
s.ID, s.Term, s.Vote, s.Commit, s.Lead, s.RaftState)
if len(s.Progress) == 0 {
j += "}}"
} else {
for k, v := range s.Progress {
subj := fmt.Sprintf(`"%x":{"match":%d,"next":%d},`, k, v.Match, v.Next)
j += subj
}
// remove the trailing ","
j = j[:len(j)-1] + "}}"
}
return []byte(j), nil
}
func (s Status) String() string {
b, err := s.MarshalJSON()
if err != nil {
log.Panicf("unexpected error: %v", err)
}
return string(b)
}
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