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// Copyright 2015 The etcd Authors
//
// 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
}
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