Refactor/admin job (polarismesh#1056)

Author: chuntaojun

go.mod

@@ -85,7 +85,6 @@ require (
 require (
 	github.com/DATA-DOG/go-sqlmock v1.5.0
 	github.com/polarismesh/specification v1.2.1
-	github.com/robfig/cron/v3 v3.0.1
 )
 
 replace gopkg.in/yaml.v2 => gopkg.in/yaml.v2 v2.2.2

go.sum

@@ -321,8 +321,6 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/polarismesh/go-restful-openapi/v2 v2.0.0-20220928152401-083908d10219 h1:XnFyNUWnciM6zgXaz6tm+Egs35rhoD0KGMmKh4gCdi0=
 github.com/polarismesh/go-restful-openapi/v2 v2.0.0-20220928152401-083908d10219/go.mod h1:4WhwBysTom9Eoy0hQ4W69I0FmO+T0EpjEW9/5sgHoUk=
-github.com/polarismesh/specification v1.2.1-alpha.1 h1:0JC+lPssydCRJtUg/mQmwcqBz3SJ3+IegJtf1nHyT54=
-github.com/polarismesh/specification v1.2.1-alpha.1/go.mod h1:rDvMMtl5qebPmqiBLNa5Ps0XtwkP31ZLirbH4kXA0YU=
 github.com/polarismesh/specification v1.2.1 h1:NcFoinO+aSWIOIyKTAhvEbjaPvZAAm5/DwJAL2FGdXs=
 github.com/polarismesh/specification v1.2.1/go.mod h1:rDvMMtl5qebPmqiBLNa5Ps0XtwkP31ZLirbH4kXA0YU=
 github.com/posener/complete v1.1.1/go.mod h1:em0nMJCgc9GFtwrmVmEMR/ZL6WyhyjMBndrE9hABlRI=
@@ -348,8 +346,6 @@ github.com/prometheus/procfs v0.1.3/go.mod h1:lV6e/gmhEcM9IjHGsFOCxxuZ+z1YqCvr4O
 github.com/prometheus/procfs v0.6.0/go.mod h1:cz+aTbrPOrUb4q7XlbU9ygM+/jj0fzG6c1xBZuNvfVA=
 github.com/prometheus/procfs v0.7.3 h1:4jVXhlkAyzOScmCkXBTOLRLTz8EeU+eyjrwB/EPq0VU=
 github.com/prometheus/procfs v0.7.3/go.mod h1:cz+aTbrPOrUb4q7XlbU9ygM+/jj0fzG6c1xBZuNvfVA=
-github.com/robfig/cron/v3 v3.0.1 h1:WdRxkvbJztn8LMz/QEvLN5sBU+xKpSqwwUO1Pjr4qDs=
-github.com/robfig/cron/v3 v3.0.1/go.mod h1:eQICP3HwyT7UooqI/z+Ov+PtYAWygg1TEWWzGIFLtro=
 github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
 github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=

maintain/job/config.go

@@ -21,6 +21,6 @@ package job
 type JobConfig struct {
 	Name     string                 `yaml:"name"`
 	Enable   bool                   `yaml:"enable"`
-	CronSpec string                 `yaml:"cronSpec"`
+	Interval string                 `yaml:"interval"`
 	Option   map[string]interface{} `yaml:"option"`
 }

maintain/job/job.go

@@ -20,8 +20,7 @@ package job
 import (
 	"context"
 	"fmt"
-
-	"github.com/robfig/cron/v3"
+	"time"
 
 	"github.com/polarismesh/polaris/cache"
 	commonlog "github.com/polarismesh/polaris/common/log"
@@ -36,8 +35,8 @@ var log = commonlog.GetScopeOrDefaultByName(commonlog.DefaultLoggerName)
 type MaintainJobs struct {
 	jobs        map[string]maintainJob
 	startedJobs map[string]maintainJob
-	scheduler   *cron.Cron
 	storage     store.Store
+	cancel      context.CancelFunc
 }
 
 // NewMaintainJobs
@@ -53,13 +52,14 @@ func NewMaintainJobs(namingServer service.DiscoverServer, cacheMgn *cache.CacheM
 				storage: storage},
 		},
 		startedJobs: map[string]maintainJob{},
-		scheduler:   newCron(),
 		storage:     storage,
 	}
 }
 
 // StartMaintainJobs
 func (mj *MaintainJobs) StartMaintianJobs(configs []JobConfig) error {
+	ctx, cancel := context.WithCancel(context.Background())
+	mj.cancel = cancel
 	for _, cfg := range configs {
 		if !cfg.Enable {
 			log.Infof("[Maintain][Job] job (%s) not enable", cfg.Name)
@@ -83,33 +83,27 @@ func (mj *MaintainJobs) StartMaintianJobs(configs []JobConfig) error {
 			log.Errorf("[Maintain][Job][%s] start leader election err: %v", cfg.Name, err)
 			return err
 		}
-		_, err = mj.scheduler.AddFunc(cfg.CronSpec, newCronCmd(cfg.Name, job, mj.storage))
+		dur, err := time.ParseDuration(cfg.Interval)
 		if err != nil {
-			log.Errorf("[Maintain][Job] job (%s) fail to start, err: %v", cfg.Name, err)
-			return fmt.Errorf("[Maintain][Job] job (%s) fail to start", cfg.Name)
+			log.Errorf("[Maintain][Job][%s] parse job exec interval err: %v", cfg.Name, err)
+			return err
 		}
+		runAdminJob(ctx, cfg.Name, dur, job, mj.storage)
 		mj.startedJobs[cfg.Name] = job
 	}
-	mj.scheduler.Start()
 	return nil
 }
 
 // StopMaintainJobs
 func (mj *MaintainJobs) StopMaintainJobs() {
-	ctx := mj.scheduler.Stop()
-	<-ctx.Done()
+	if mj.cancel != nil {
+		mj.cancel()
+	}
 	mj.startedJobs = map[string]maintainJob{}
 }
 
-func newCron() *cron.Cron {
-	return cron.New(cron.WithChain(
-		cron.Recover(cron.DefaultLogger)),
-		cron.WithParser(cron.NewParser(
-			cron.Minute|cron.Hour|cron.Dom|cron.Month|cron.Dow|cron.Descriptor)))
-}
-
-func newCronCmd(name string, job maintainJob, storage store.Store) func() {
-	return func() {
+func runAdminJob(ctx context.Context, name string, interval time.Duration, job maintainJob, storage store.Store) {
+	f := func() {
 		if !storage.IsLeader(store.ElectionKeyMaintainJobPrefix + name) {
 			log.Infof("[Maintain][Job][%s] I am follower", name)
 			job.clear()
@@ -118,8 +112,19 @@ func newCronCmd(name string, job maintainJob, storage store.Store) func() {
 		log.Infof("[Maintain][Job][%s] I am leader, job start", name)
 		job.execute()
 		log.Infof("[Maintain][Job][%s] I am leader, job end", name)
-
 	}
+
+	ticker := time.NewTicker(interval)
+	go func(ctx context.Context) {
+		for {
+			select {
+			case <-ctx.Done():
+				return
+			case <-ticker.C:
+				f()
+			}
+		}
+	}(ctx)
 }
 
 type maintainJob interface {

release/conf/polaris-server.yaml

@@ -395,19 +395,22 @@ maintain:
     # Clean up long term unhealthy instance
     - name: DeleteUnHealthyInstance
       enable: false
-      cronSpec: "0 0 * * ?"
+      # job exec interval. Valid time units are "ns", "us" (or "µs"), "ms", "s", "m", "h".
+      interval: 24h
       option:
         instanceDeleteTimeout: 60m
     # Delete auto-created service without an instance
     - name: DeleteEmptyAutoCreatedService
       enable: false
-      cronSpec: "*/10 * * * ?"
+      # job exec interval. Valid time units are "ns", "us" (or "µs"), "ms", "s", "m", "h".
+      interval: 1h
       option:
         serviceDeleteTimeout: 30m
     # Clean soft deleted instances
     - name: CleanDeletedInstances
       enable: true
-      cronSpec: "0 0 * * 1"
+      # job exec interval. Valid time units are "ns", "us" (or "µs"), "ms", "s", "m", "h".
+      interval: 24h
 
 # Storage configuration
 store: