mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
25b6590547
This change splits the raftLog.entries array into an in-memory "unstable" list and a pluggable interface for retrieving entries that have been persisted to disk. An in-memory implementation of this interface is provided which behaves the same as the old version; in a future commit etcdserver could replace the MemoryStorage with one backed by the WAL.
68 lines
1.5 KiB
Go
68 lines
1.5 KiB
Go
/*
|
|
Copyright 2014 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"
|
|
"io"
|
|
"io/ioutil"
|
|
"os"
|
|
"os/exec"
|
|
"strings"
|
|
)
|
|
|
|
func diffu(a, b string) string {
|
|
if a == b {
|
|
return ""
|
|
}
|
|
aname, bname := mustTemp("base", a), mustTemp("other", b)
|
|
defer os.Remove(aname)
|
|
defer os.Remove(bname)
|
|
cmd := exec.Command("diff", "-u", aname, bname)
|
|
buf, err := cmd.CombinedOutput()
|
|
if err != nil {
|
|
if _, ok := err.(*exec.ExitError); ok {
|
|
// do nothing
|
|
return string(buf)
|
|
}
|
|
panic(err)
|
|
}
|
|
return string(buf)
|
|
}
|
|
|
|
func mustTemp(pre, body string) string {
|
|
f, err := ioutil.TempFile("", pre)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
_, err = io.Copy(f, strings.NewReader(body))
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
f.Close()
|
|
return f.Name()
|
|
}
|
|
|
|
func ltoa(l *raftLog) string {
|
|
s := fmt.Sprintf("committed: %d\n", l.committed)
|
|
s += fmt.Sprintf("applied: %d\n", l.applied)
|
|
for i, e := range l.allEntries() {
|
|
s += fmt.Sprintf("#%d: %+v\n", i, e)
|
|
}
|
|
return s
|
|
}
|