2017-03-10 09:08:51 +00:00
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package utils
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import (
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"github.com/robfig/cron"
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"errors"
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2017-03-10 10:08:45 +00:00
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"scheduler/utils/app"
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2017-03-13 09:21:21 +00:00
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"sync"
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2017-03-10 09:08:51 +00:00
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)
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2017-03-10 10:08:45 +00:00
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var DefaultCronTask CronTask;
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2017-03-10 09:08:51 +00:00
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type CronTask struct {
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sync.RWMutex
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tasks map[string]*cron.Cron
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}
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2017-03-10 10:08:45 +00:00
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func init() {
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if app.Installed {
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DefaultCronTask = CronTask{
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sync.RWMutex{},
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make(map[string]*cron.Cron),
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}
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}
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}
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2017-03-10 09:08:51 +00:00
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// 新增定时任务,如果name存在,则添加失败
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func(cronTask *CronTask) Add(name string, spec string, cmd func() ) error {
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if name == "" || spec == "" || cmd == nil {
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return errors.New("参数不完整")
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}
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if cronTask.IsExist(name) {
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return errors.New("任务已存在")
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}
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2017-03-13 09:21:21 +00:00
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cronTask.Lock()
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defer cronTask.Unlock()
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cronTask.tasks[name] = cron.New()
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err := cronTask.tasks[name].AddFunc(spec, cmd)
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return err
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}
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// 任务不存在则新增,任务已存在则替换任务
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func(cronTask *CronTask) addOrReplace(name string, spec string, cmd func() ) error {
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if cronTask.IsExist(name) {
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cronTask.Delete(name)
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}
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return cronTask.Add(name, spec, cmd)
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}
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// 判断任务是否存在
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func(cronTask *CronTask) IsExist(name string) bool {
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cronTask.RLock()
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defer cronTask.RUnlock()
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_, ok := cronTask.tasks[name]
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return ok
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}
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// 启动任务
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func(cronTask *CronTask) Start(name string) {
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if cronTask.IsExist(name) {
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cronTask.tasks[name].Start()
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}
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}
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// 停止任务
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func(cronTask *CronTask) Stop(name string) {
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if cronTask.IsExist(name) {
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cronTask.tasks[name].Stop()
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}
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}
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// 删除任务
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func(cronTask *CronTask) Delete(name string) {
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cronTask.Stop(name)
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cronTask.Lock()
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defer cronTask.Unlock()
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delete(cronTask.tasks, name)
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}
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// 运行所有任务
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func(cronTask *CronTask) run() {
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for _, cron := range cronTask.tasks {
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// cron内部有开启goroutine,此处不用新建goroutine
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cron.Start()
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}
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}
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