新增ansible、任务管理

pull/21/merge
ouqiang 2017-03-10 17:08:51 +08:00
parent 339457adeb
commit 8081219dce
5 changed files with 343 additions and 0 deletions

100
utils/ansible/ansible.go Normal file
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package ansible
// ansible ad-hoc playbook命令封装
import (
"os"
"scheduler/utils"
"errors"
"gopkg.in/yaml.v2"
"io/ioutil"
"scheduler/utils/app"
)
func init() {
// ansible配置文件目录
os.Setenv("ANSIBLE_CONFIG", app.ConfDir)
}
type Handler map[string]interface{}
type Playbook struct {
Name string
Hosts string
Tasks []Handler
Handlers []Handler
}
func(playbook *Playbook) SetHosts(hosts string) {
playbook.Hosts = hosts
}
func(playbook *Playbook) SetName(name string) {
playbook.Name = name
}
func(playbook *Playbook) AddTask(handler Handler) {
playbook.Tasks = append(playbook.Tasks, handler)
}
func(playbook *Playbook) AddHandler(handler Handler) {
playbook.Handlers = append(playbook.Handlers, handler)
}
/**
* ad-hoc
* hosts
* module
* args
*/
func ExecCommand(hostPath string, module string, args... string) (output string, err error) {
if hostPath == "" || module == "" {
err = errors.New("参数不完整")
return
}
commandArgs := []string{"-i", , hostPath, "-m", module}
if len(args) != 0 {
commandArgs = append(commandArgs, "-a", args...)
}
output, err = utils.ExecShell("ansible", commandArgs...)
return
}
// 执行playbook
func ExecPlaybook(hostPath string, playbook Playbook) (result string, err error) {
data, err := yaml.Marshal([]Playbook{playbook})
if err != nil {
return
}
tmpFile, err := ioutil.TempFile(getTmpDir(), "playbook")
if err != nil {
return
}
defer func() {
tmpFile.Close()
os.Remove(tmpFile.Name())
}()
_, err = tmpFile.Write(data)
if err != nil {
return
}
commandArgs := []string{"-i", hostPath, tmpFile.Name()}
result, err = utils.ExecShell("ansible-playbook", commandArgs...)
return
}
// 判断 获取临时目录,默认/dev/shm
func getTmpDir() string {
dir := "/dev/shm"
_, err := os.Stat(dir)
if os.IsPermission(err) {
return ""
}
return dir
}

69
utils/app/app.go Normal file
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package app
import (
"os"
"scheduler/utils"
"runtime"
)
var (
AppDir string // 应用根目录
ConfDir string // 配置目录
LogDir string // 日志目录
DataDir string // 数据目录存放session文件等
AppConfig string // 应用配置文件
Installed bool = isInstalled() // 应用是否安装过
)
func init() {
wd, err := os.Getwd()
if err != nil {
panic(err)
}
AppDir = wd
ConfDir = AppDir + "/conf"
LogDir = AppDir + "/log"
DataDir = AppDir + "/data"
AppConfig = AppDir + "/app.ini"
checkDirExists(ConfDir, LogDir, DataDir)
}
// 检测环境
func CheckEnv() {
// ansible不支持安装在windows上, windows只能作为被控机
if runtime.GOOS == "windows" {
panic("不支持在windows上运行")
}
_, err := utils.ExecShell("ansible", "--version")
if err != nil {
panic(err)
}
_, err = utils.ExecShell("ansible-playbook", "--version")
if err != nil {
panic("ansible-playbook not found")
}
}
// 判断应用是否安装过
func isInstalled() bool {
_, err := os.Stat(ConfDir + "/install.lock")
if os.IsExist(err) {
return true
}
return false
}
// 检测目录是否存在
func checkDirExists(path... string) {
for _, value := range(path) {
_, err := os.Stat(value)
if os.IsNotExist(err) {
panic(value + "目录不存在")
}
if os.IsPermission(err) {
panic(value + "目录无权限操作")
}
}
}

77
utils/cron_task.go Normal file
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package utils
import (
"github.com/robfig/cron"
"errors"
)
// todo map并发访问加锁
var DefaultCronTask = &CronTask{
make(map[string]*cron.Cron),
}
type CronTask struct {
tasks map[string]*cron.Cron
}
// 新增定时任务,如果name存在则添加失败
func(cronTask *CronTask) Add(name string, spec string, cmd func() ) error {
if name == "" || spec == "" || cmd == nil {
return errors.New("参数不完整")
}
if cronTask.IsExist(name) {
return errors.New("任务已存在")
}
cronTask.tasks[name] = cron.New()
err := cronTask.tasks[name].AddFunc(spec, cmd)
return err
}
// 任务不存在则新增,任务已存在则替换任务
func(cronTask *CronTask) addOrReplace(name string, spec string, cmd func() ) error {
if cronTask.IsExist(name) {
cronTask.Delete(name)
}
return cronTask.Add(name, spec, cmd)
}
// 判断任务是否存在
func(cronTask *CronTask) IsExist(name string) bool {
_, ok := cronTask.tasks[name]
return ok
}
// 启动任务
func(cronTask *CronTask) Start(name string) {
if cronTask.IsExist(name) {
cronTask.tasks[name].Start()
}
}
// 停止任务
func(cronTask *CronTask) Stop(name string) {
if cronTask.IsExist(name) {
cronTask.tasks[name].Stop()
}
}
// 删除任务
func(cronTask *CronTask) Delete(name string) {
cronTask.Stop(name)
cronTask.tasks[name] = nil
delete(cronTask.tasks, name)
}
// 运行所有任务
func(cronTask *CronTask) run() {
for _, cron := range cronTask.tasks {
// cron内部有开启goroutine,此处不用新建
cron.Start()
}
}

45
utils/setting/setting.go Normal file
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package setting
import (
"gopkg.in/ini.v1"
"errors"
"scheduler/utils/app"
)
// 读取配置
func Read() (config *ini.File, err error) {
config, err = ini.Load(app.AppConfig)
if err != nil {
return
}
return
}
// 写入配置
func Write(config map[string]map[string]string) (error) {
if len(config) == 0 {
return errors.New("参数不能为空")
}
file := ini.Empty()
for sectionName, items := range(config) {
if sectionName == "" {
return errors.New("节名称不能为空")
}
section, err := file.NewSection(sectionName)
if err != nil {
return err
}
for key, value := range(items) {
_, err = section.NewKey(key, value)
if err != nil {
return err
}
}
}
err := file.SaveTo(app.AppConfig)
return err
}

52
utils/utils.go Normal file
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package utils
import (
"os/exec"
"math/rand"
"time"
"crypto/md5"
"encoding/hex"
"log"
)
// 执行shell命令
func ExecShell(command string, args... string) (string, error) {
result, err := exec.Command(command, args...).CombinedOutput()
return string(result), err
}
// 生成长度为length的随机字符串
func RandString(length int64) string {
sources := []byte("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
result := []byte{}
r := rand.New(rand.NewSource(time.Now().UnixNano()))
sourceLength := len(sources)
var i int64 = 0
for ; i < length; i++ {
result = append(result, sources[r.Intn(sourceLength)])
}
return string(result)
}
// 生成32位MD5摘要
func Md5(str string) string {
m := md5.New()
m.Write([]byte(str))
return hex.EncodeToString(m.Sum(nil))
}
// 生成0-max之间随机数
func RandNumber(max int) int {
r := rand.New(rand.NewSource(time.Now().UnixNano()))
return r.Intn(max)
}
// 日志记录
// todo 保存到哪里 文件,数据库还是elasticsearch?,暂时输出到终端
func RecordLog(v... interface{}) {
log.Println(v)
}