Mirror ReadyCondition with the actual current condition

This patch covers two things:

- Mirror() relies on sorting conditions in each condition group by their
  LastTransitionTime, so it swaps the RestoreLastTransitionTimes() call
  with the Mirror() call in the defer function;

- It setup ReadyCondition as Unknown instead of False, so we can avoid
  it to be the only one Mirrored in the top-level status: this allows
  the other conditions to compete for mirroring

Signed-off-by: Francesco Pantano <[email protected]>

controllers/glance_controller.go

@@ -137,11 +137,12 @@ func (r *GlanceReconciler) Reconcile(ctx context.Context, req ctrl.Request) (res
 	// Always patch the instance status when exiting this function so we can
 	// persist any changes.
 	defer func() {
-		// Always mirror the condition status (useful in case of failures)
-		instance.Status.Conditions.Set(
-			instance.Status.Conditions.Mirror(condition.ReadyCondition))
 		condition.RestoreLastTransitionTimes(
 			&instance.Status.Conditions, savedConditions)
+		if instance.Status.Conditions.IsUnknown(condition.ReadyCondition) {
+			instance.Status.Conditions.Set(
+				instance.Status.Conditions.Mirror(condition.ReadyCondition))
+		}
 		err := helper.PatchInstance(ctx, instance)
 		if err != nil {
 			_err = err
@@ -152,8 +153,11 @@ func (r *GlanceReconciler) Reconcile(ctx context.Context, req ctrl.Request) (res
 	// initialize conditions used later as Status=Unknown, except the ReadyCondition
 	// that should be False when we start
 	cl := condition.CreateList(
-		// Mark ReadyCondition as False from the beginning
-		condition.FalseCondition(condition.ReadyCondition, condition.InitReason, condition.SeverityInfo, condition.ReadyInitMessage),
+		// Mark ReadyCondition as Unknown from the beginning, because the
+		// Reconcile function is in progress. If this condition is not marked
+		// as True and is still in the "Unknown" state, we `Mirror(` the actual
+		// failure
+		condition.UnknownCondition(condition.ReadyCondition, condition.InitReason, condition.ReadyInitMessage),
 		condition.UnknownCondition(condition.DBReadyCondition, condition.InitReason, condition.DBReadyInitMessage),
 		condition.UnknownCondition(condition.DBSyncReadyCondition, condition.InitReason, condition.DBSyncReadyInitMessage),
 		condition.UnknownCondition(condition.MemcachedReadyCondition, condition.InitReason, condition.MemcachedReadyInitMessage),

controllers/glanceapi_controller.go

@@ -134,9 +134,12 @@ func (r *GlanceAPIReconciler) Reconcile(ctx context.Context, req ctrl.Request) (
 
 	// Always patch the instance status when exiting this function so we can persist any changes.
 	defer func() {
-		// Always mirror the Condition from the sub level CRs
-		instance.Status.Conditions.Set(instance.Status.Conditions.Mirror(condition.ReadyCondition))
-		condition.RestoreLastTransitionTimes(&instance.Status.Conditions, savedConditions)
+		condition.RestoreLastTransitionTimes(
+			&instance.Status.Conditions, savedConditions)
+		if instance.Status.Conditions.IsUnknown(condition.ReadyCondition) {
+			instance.Status.Conditions.Set(
+				instance.Status.Conditions.Mirror(condition.ReadyCondition))
+		}
 		err := helper.PatchInstance(ctx, instance)
 		if err != nil {
 			_err = err
@@ -146,6 +149,11 @@ func (r *GlanceAPIReconciler) Reconcile(ctx context.Context, req ctrl.Request) (
 
 	// initialize conditions used later as Status=Unknown
 	cl := condition.CreateList(
+		// Mark ReadyCondition as Unknown from the beginning, because the
+		// Reconcile function is in progress. If this condition is not marked
+		// as True and is still in the "Unknown" state, we `Mirror(` the actual
+		// failure
+		condition.UnknownCondition(condition.ReadyCondition, condition.InitReason, condition.ReadyInitMessage),
 		condition.UnknownCondition(glancev1.CinderCondition, condition.InitReason, glancev1.CinderInitMessage),
 		condition.UnknownCondition(condition.ExposeServiceReadyCondition, condition.InitReason, condition.ExposeServiceReadyInitMessage),
 		condition.UnknownCondition(condition.InputReadyCondition, condition.InitReason, condition.InputReadyInitMessage),