*: fast move forward when too many advance

Signed-off-by: BornChanger <dawn_catcher@126.com>
pingcap · Dec 18, 2023 · ae08088 · ae08088
1 parent 6adf8d3
commit ae08088
Show file tree

Hide file tree

Showing 4 changed files with 26 additions and 16 deletions.
diff --git a/pkg/backup/backupschedule/backup_schedule_manager.go b/pkg/backup/backupschedule/backup_schedule_manager.go
@@ -187,24 +187,25 @@ func getLastScheduledTime(bs *v1alpha1.BackupSchedule, nowFn nowFn) (*time.Time,
 	}
 
 	var scheduledTimes []time.Time
-	var warningPrinted = false
 	for t := sched.Next(earliestTime); !t.After(now); t = sched.Next(t) {
 		scheduledTimes = append(scheduledTimes, t)
 		// If there is a bug somewhere, or incorrect clock
 		// on controller's server or apiservers (for setting creationTimestamp)
 		// then there could be so many missed start times (it could be off
-		// by decades or more).
-		if len(scheduledTimes) > 100 {
+		// by decades or more). So, we need to set LastBackupTime to now() in order to let
+		// next reconcile succeed.
+		if len(scheduledTimes) > 1000 {
 			// We can't get the last backup schedule time
 			if bs.Status.LastBackupTime == nil && bs.Status.AllBackupCleanTime != nil {
 				// Recovery backup schedule from pause status, should refresh AllBackupCleanTime to avoid unschedulable problem
 				bs.Status.AllBackupCleanTime = &metav1.Time{Time: nowFn()}
 				return nil, controller.RequeueErrorf("recovery backup schedule %s/%s from pause status, refresh AllBackupCleanTime.", ns, bsName)
 			}
-			if !warningPrinted {
-				klog.Warning("Too many missed start backup schedule time (> 100). Check the clock.")
-				warningPrinted = true
-			}
+			klog.Warning("Too many missed start backup schedule time (> 1000). Fail current one.")
+			klog.Warning("Too many missed start backup schedule time (> 1000). Fail current one.")
+			offset := sched.Next(t).Sub(t)
+			bs.Status.LastBackupTime = &metav1.Time{Time: time.Now().Add(-offset)}
+			return nil, nil
 		}
 	}
 

diff --git a/pkg/backup/backupschedule/backup_schedule_manager_test.go b/pkg/backup/backupschedule/backup_schedule_manager_test.go
@@ -176,7 +176,11 @@ func TestGetLastScheduledTime(t *testing.T) {
 	}
 
 	// test too many miss
-	bs.Status.LastBackupTime.Time = now.AddDate(0, -12, 0)
+	bs.Status.LastBackupTime.Time = now.AddDate(-10, 0, 0)
+	getTime, err = getLastScheduledTime(bs, time.Now)
+	g.Expect(err).Should(BeNil())
+	g.Expect(getTime).Should(BeNil())
+	// next reconcile should succeed
 	getTime, err = getLastScheduledTime(bs, time.Now)
 	g.Expect(err).Should(BeNil())
 	g.Expect(getTime).ShouldNot(BeNil())

diff --git a/pkg/fedvolumebackup/backupschedule/backup_schedule_manager.go b/pkg/fedvolumebackup/backupschedule/backup_schedule_manager.go
@@ -112,24 +112,25 @@ func getLastScheduledTime(vbs *v1alpha1.VolumeBackupSchedule, nowFn nowFn) (*tim
 	}
 
 	var scheduledTimes []time.Time
-	var warningPrinted = false
 	for t := sched.Next(earliestTime); !t.After(now); t = sched.Next(t) {
 		scheduledTimes = append(scheduledTimes, t)
 		// If there is a bug somewhere, or incorrect clock
 		// on controller's server or apiservers (for setting creationTimestamp)
 		// then there could be so many missed start times (it could be off
-		// by decades or more).
-		if len(scheduledTimes) > 100 {
+		// by decades or more). So, we need to set LastBackupTime to now() in order to let
+		// next reconcile succeed.
+		if len(scheduledTimes) > 1000 {
 			// We can't get the last backup schedule time
 			if vbs.Status.LastBackupTime == nil && vbs.Status.AllBackupCleanTime != nil {
 				// Recovery backup schedule from pause status, should refresh AllBackupCleanTime to avoid unschedulable problem
 				vbs.Status.AllBackupCleanTime = &metav1.Time{Time: nowFn()}
 				return nil, controller.RequeueErrorf("recovery backup schedule %s/%s from pause status, refresh AllBackupCleanTime.", ns, bsName)
 			}
-			if !warningPrinted {
-				klog.Warning("Too many missed start backup schedule time (> 100). Check the clock.")
-				warningPrinted = true
-			}
+
+			klog.Warning("Too many missed start backup schedule time (> 1000). Fail current one.")
+			offset := sched.Next(t).Sub(t)
+			vbs.Status.LastBackupTime = &metav1.Time{Time: time.Now().Add(-offset)}
+			return nil, nil
 		}
 	}
 

diff --git a/pkg/fedvolumebackup/backupschedule/backup_schedule_manager_test.go b/pkg/fedvolumebackup/backupschedule/backup_schedule_manager_test.go
@@ -170,9 +170,13 @@ func TestGetLastScheduledTime(t *testing.T) {
 	}
 
 	// test too many miss
-	bs.Status.LastBackupTime.Time = now.AddDate(0, -12, 0)
+	bs.Status.LastBackupTime.Time = now.AddDate(-10, 0, 0)
 	getTime, err = getLastScheduledTime(bs, time.Now)
 	g.Expect(err).Should(BeNil())
+	g.Expect(getTime).Should(BeNil())
+	getTime, err = getLastScheduledTime(bs, time.Now)
+	// next reconcile should succeed
+	g.Expect(err).Should(BeNil())
 	g.Expect(getTime).ShouldNot(BeNil())
 }