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gojobs/cron.go

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package gojobs
import (
"errors"
"github.com/robfig/cron/v3"
"sync"
)
// Cron 定时任务管理器
type Cron struct {
inner *cron.Cron
ids map[string]cron.EntryID
mutex sync.Mutex
}
// NewCron 创建一个定时任务管理器
func NewCron() *Cron {
return &Cron{
inner: cron.New(cron.WithSeconds()),
ids: make(map[string]cron.EntryID),
}
}
// Start 启动任务
func (c *Cron) Start() {
c.inner.Start()
}
// Stop 关闭任务
func (c *Cron) Stop() {
c.inner.Stop()
}
// DelByID 删除任务
// id唯一任务id
func (c *Cron) DelByID(id string) {
c.mutex.Lock()
defer c.mutex.Unlock()
eid, ok := c.ids[id]
if !ok {
return
}
c.inner.Remove(eid)
delete(c.ids, id)
}
// AddJobByInterface 实现接口的方式添加定时任务
// id唯一任务id
// spec配置定时执行时间表达式
// cmd需要执行的任务方法
func (c *Cron) AddJobByInterface(id string, spec string, cmd cron.Job) error {
c.mutex.Lock()
defer c.mutex.Unlock()
if _, ok := c.ids[id]; ok {
return errors.New("任务已存在")
}
eid, err := c.inner.AddJob(spec, cmd)
if err != nil {
return err
}
c.ids[id] = eid
return nil
}
// AddJobByFunc 添加函数作为定时任务
// id唯一任务id
// spec配置定时执行时间表达式
// f需要执行的任务方法
func (c *Cron) AddJobByFunc(id string, spec string, f func()) error {
c.mutex.Lock()
defer c.mutex.Unlock()
if _, ok := c.ids[id]; ok {
return errors.New("任务已存在")
}
eid, err := c.inner.AddFunc(spec, f)
if err != nil {
return err
}
c.ids[id] = eid
return nil
}
// IsExistsJob 判断是否存在任务
// id唯一任务id
func (c *Cron) IsExistsJob(id string) bool {
_, exist := c.ids[id]
return exist
}
// Ids ...
func (c *Cron) Ids() []string {
c.mutex.Lock()
defer c.mutex.Unlock()
validIds := make([]string, 0, len(c.ids))
invalidIds := make([]string, 0)
for sid, eid := range c.ids {
e := c.inner.Entry(eid)
if e.ID != eid {
invalidIds = append(invalidIds, sid)
continue
}
validIds = append(validIds, sid)
}
for _, id := range validIds {
delete(c.ids, id)
}
return validIds
}