smart_canteen/app/task/init.go

package task

import (
	"applet/app/admin/db/model"
	taskMd "applet/app/task/md"
	"time"

	"applet/app/utils/logx"
	"github.com/robfig/cron/v3"
	"xorm.io/xorm"
)

var (
	timer          *cron.Cron
	jobs           = map[string]func(*xorm.Engine, string){}
	baseEntryId    cron.EntryID
	entryIds       []cron.EntryID
	taskCfgList    map[string]*[]model.SysCfg
	ch             = make(chan int, 30)
	workerNum      = 15 // 智盟跟单并发数量
	otherCh        = make(chan int, 30)
	otherWorkerNum = 18 // 淘宝, 苏宁, 考拉并发量
)

func Init() {
	// 初始化任务列表
	initTasks()
	var err error
	timer = cron.New()
	// reload为初始化数据库方法
	if baseEntryId, err = timer.AddFunc("@every 15m", reload); err != nil {
		_ = logx.Fatal(err)
	}
}

func Run() {
	reload()
	timer.Start()
	_ = logx.Info("auto tasks running...")
}

func reload() {
	// 重新初始化数据库

	if len(taskCfgList) > 0 {
		// 删除原有所有任务
		if len(entryIds) > 0 {
			for _, v := range entryIds {
				if v != baseEntryId {
					timer.Remove(v)
				}
			}
			entryIds = nil
		}
		var (
			entryId cron.EntryID
			err     error
		)
		// 添加任务
		for dbName, v := range taskCfgList {
			for _, vv := range *v {
				if _, ok := jobs[vv.Key]; ok && vv.Val != "" {
					// fmt.Println(vv.Val)
					if entryId, err = timer.AddFunc(vv.Val, doTask(dbName, vv.Key)); err == nil {
						entryIds = append(entryIds, entryId)
					}
				}
			}
		}

	}
}

func doTask(dbName, fnName string) func() {
	return func() {
		begin := time.Now().Local()
		end := time.Now().Local()
		logx.Infof(
			"[%s] AutoTask <%s> started at <%s>, ended at <%s> duration <%s>",
			dbName,
			fnName,
			begin.Format("2006-01-02 15:04:05.000"),
			end.Format("2006-01-02 15:04:05.000"),
			time.Duration(end.UnixNano()-begin.UnixNano()).String(),
		)
	}
}

// 增加自动任务队列
func initTasks() {
	jobs[taskMd.MallCronOrderCancel] = taskCancelOrder // 取消订单
}