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alarm.go
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alarm.go
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// Copyright 2018 vip.com.
//
// 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,
// See the License for the specific language governing permissions and
// limitations under the License.
package alarm
import (
"bytes"
"encoding/json"
"os"
"os/exec"
"time"
"github.com/vipshop/vdl/pkg/glog"
)
const (
RetryTimes = 3
)
type AlarmResponse struct {
Success bool `json:"success"`
Code int `json:"code"`
Object string `json:"object"`
Message string `json:"message"`
}
var scriptPath string
func SetScriptPath(p string) {
scriptPath = p
}
func Alarm(message string) {
var try int
var resp AlarmResponse
if _, err := os.Stat(scriptPath); os.IsNotExist(err) {
glog.Errorf("alarm script not exist,scriptPath=%s,message=%s", scriptPath, message)
return
}
if len(message) == 0 {
glog.Errorf("alarm message is null,ignore")
return
}
for try < RetryTimes {
cmd := exec.Command("bash", scriptPath, message)
var out bytes.Buffer
cmd.Stdout = &out
err := cmd.Run()
if err != nil {
glog.Errorf("fail to exec alarm script,scriptPath=%s,err=%s,message=%s", scriptPath, err.Error(), message)
return
}
//if unmarshal retry 3 times
err = json.Unmarshal(out.Bytes(), &resp)
if err != nil || resp.Success == false {
try++
time.Sleep(time.Second * time.Duration(try*10))
glog.Infof("alarm response is %s,retry send alarm[%s],after %d second,scriptPath=%s",
out.String(), message, try*10, scriptPath)
continue
} else {
glog.Infof("send alarm[%s] success,scriptPath=%s,message=%s", scriptPath, message)
return
}
}
glog.Errorf("send alarm[%s] error, and try max times[%d],scriptPath=%s", message, try, scriptPath)
}