removes nextRuns in the past when job skipped by locker (#829)

Co-authored-by: manuelarte <manuel.doncel.martos@gmail.com>

Author: manuelarte

executor.go

@@ -31,6 +31,9 @@ type executor struct {
 	// used to request jobs from the scheduler
 	jobOutRequest chan jobOutRequest
 
+	// sends out job needs to update the next runs
+	jobUpdateNextRuns chan uuid.UUID
+
 	// used by the executor to receive a stop signal from the scheduler
 	stopCh chan struct{}
 	// the timeout value when stopping
@@ -247,6 +250,14 @@ func (e *executor) sendOutForRescheduling(jIn *jobIn) {
 	jIn.shouldSendOut = false
 }
 
+func (e *executor) sendOutForNextRunUpdate(jIn *jobIn) {
+	select {
+	case e.jobUpdateNextRuns <- jIn.id:
+	case <-e.ctx.Done():
+		return
+	}
+}
+
 func (e *executor) limitModeRunner(name string, in chan jobIn, wg *waitGroupWithMutex, limitMode LimitMode, rescheduleLimiter chan struct{}) {
 	e.logger.Debug("gocron: limitModeRunner starting", "name", name)
 	for {
@@ -376,6 +387,7 @@ func (e *executor) runJob(j internalJob, jIn jobIn) {
 			_ = callJobFuncWithParams(j.afterLockError, j.id, j.name, err)
 			e.sendOutForRescheduling(&jIn)
 			e.incrementJobCounter(j, Skip)
+			e.sendOutForNextRunUpdate(&jIn)
 			return
 		}
 		defer func() { _ = lock.Unlock(j.ctx) }()
@@ -385,6 +397,7 @@ func (e *executor) runJob(j internalJob, jIn jobIn) {
 			_ = callJobFuncWithParams(j.afterLockError, j.id, j.name, err)
 			e.sendOutForRescheduling(&jIn)
 			e.incrementJobCounter(j, Skip)
+			e.sendOutForNextRunUpdate(&jIn)
 			return
 		}
 		defer func() { _ = lock.Unlock(j.ctx) }()

scheduler.go

@@ -138,6 +138,7 @@ func NewScheduler(options ...SchedulerOption) (Scheduler, error) {
 
 		jobsIn:                 make(chan jobIn),
 		jobsOutForRescheduling: make(chan uuid.UUID),
+		jobUpdateNextRuns:      make(chan uuid.UUID),
 		jobsOutCompleted:       make(chan uuid.UUID),
 		jobOutRequest:          make(chan jobOutRequest, 1000),
 		done:                   make(chan error),
@@ -176,7 +177,8 @@ func NewScheduler(options ...SchedulerOption) (Scheduler, error) {
 			select {
 			case id := <-s.exec.jobsOutForRescheduling:
 				s.selectExecJobsOutForRescheduling(id)
-
+			case id := <-s.exec.jobUpdateNextRuns:
+				s.updateNextScheduled(id)
 			case id := <-s.exec.jobsOutCompleted:
 				s.selectExecJobsOutCompleted(id)
 
@@ -405,6 +407,22 @@ func (s *scheduler) selectExecJobsOutForRescheduling(id uuid.UUID) {
 	s.jobs[id] = j
 }
 
+func (s *scheduler) updateNextScheduled(id uuid.UUID) {
+	j, ok := s.jobs[id]
+	if !ok {
+		return
+	}
+	var newNextScheduled []time.Time
+	for _, t := range j.nextScheduled {
+		if t.Before(s.now()) {
+			continue
+		}
+		newNextScheduled = append(newNextScheduled, t)
+	}
+	j.nextScheduled = newNextScheduled
+	s.jobs[id] = j
+}
+
 func (s *scheduler) selectExecJobsOutCompleted(id uuid.UUID) {
 	j, ok := s.jobs[id]
 	if !ok {