🌱 Improve v1beta2 condition ordering

util/conditions/v1beta2/sort.go

@@ -22,13 +22,21 @@ import (
 	clusterv1 "sigs.k8s.io/cluster-api/api/v1beta1"
 )
 
+var orderMap = map[string]int{}
+
+func init() {
+	for i, c := range order {
+		orderMap[c] = i
+	}
+}
+
 // defaultSortLessFunc returns true if a condition is less than another with regards to the
 // order of conditions designed for convenience of the consumer, i.e. kubectl get.
 // According to this order the Available and the Ready condition always goes first, Deleting and Paused always goes last,
 // and all the other conditions are sorted by Type.
 func defaultSortLessFunc(i, j metav1.Condition) bool {
-	fi, oki := first[i.Type]
-	fj, okj := first[j.Type]
+	fi, oki := orderMap[i.Type]
+	fj, okj := orderMap[j.Type]
 	switch {
 	case oki && !okj:
 		return true
@@ -38,26 +46,90 @@ func defaultSortLessFunc(i, j metav1.Condition) bool {
 		return fi < fj
 	}
 
-	li, oki := last[i.Type]
-	lj, okj := last[j.Type]
-	switch {
-	case oki && !okj:
-		return false
-	case !oki && okj:
-		return true
-	case oki && okj:
-		return li < lj
-	}
-
 	return i.Type < j.Type
 }
 
-var first = map[string]int{
-	clusterv1.AvailableV1Beta2Condition: 0,
-	clusterv1.ReadyV1Beta2Condition:     1,
+// The order array below leads to the following condition ordering:
+//
+// | Condition                      | Cluster | KCP | MD | MS | MP | Machine |
+// |--------------------------------|---------|-----|:---|----|----|---------|
+// | -- Availability conditions --  |         |     |    |    |    |         |
+// | Available                      | x       | x   | x  |    | x  | x       |
+// | Ready                          |         |     |    |    |    | x       |
+// | UpToDate                       |         |     |    |    |    | x       |
+// | RemoteConnectionProbe          | x       |     |    |    |    |         |
+// | BootstrapConfigReady           |         |     |    |    | x  | x       |
+// | InfrastructureReady            | x       |     |    |    | x  | x       |
+// | ControlPlaneInitialized        | x       |     |    |    |    |         |
+// | ControlPlaneAvailable          | x       |     |    |    |    |         |
+// | WorkersAvailable               | x       |     |    |    |    |         |
+// | CertificatesAvailable          |         | x   |    |    |    |         |
+// | Initialized                    |         | x   |    |    |    |         |
+// | EtcdClusterHealthy             |         | x   |    |    |    |         |
+// | ControlPlaneComponentsHealthy  |         | x   |    |    |    |         |
+// | NodeHealthy                    |         |     |    |    |    | x       |
+// | NodeReady                      |         |     |    |    |    | x       |
+// | EtcdPodHealthy                 |         |     |    |    |    | x       |
+// | EtcdMemberHealthy              |         |     |    |    |    | x       |
+// | APIServerPodHealthy            |         |     |    |    |    | x       |
+// | ControllerManagerPodHealthy    |         |     |    |    |    | x       |
+// | SchedulerPodHealthy            |         |     |    |    |    | x       |
+// | HealthCheckSucceeded           |         |     |    |    |    | x       |
+// | OwnerRemediated                |         |     |    |    |    | x       |
+// | -- Operations --               |         |     |    |    |    |         |
+// | TopologyReconciled             | x       |     |    |    |    |         |
+// | Remediating                    | x       | x   | x  | x  | x  |         |
+// | ScalingDown                    | x       | x   | x  | x  | x  |         |
+// | ScalingUp                      | x       | x   | x  | x  | x  |         |
+// | -- Aggregated from Machines -- |         |     |    |    |    |         |
+// | MachinesReady                  | x       | x   | x  | x  | x  |         |
+// | MachinesUpToDate               | x       | x   | x  | x  | x  |         |
+// | -- Misc --                     |         |     |    |    |    |         |
+// | Paused                         | x       | x   | x  | x  | x  | x       |
+// | Deleting                       | x       | x   | x  | x  | x  | x       |
+// .
+var order = []string{
+	clusterv1.AvailableV1Beta2Condition,
+	clusterv1.ReadyV1Beta2Condition,
+	clusterv1.MachineUpToDateV1Beta2Condition,
+	clusterv1.ClusterRemoteConnectionProbeV1Beta2Condition,
+	clusterv1.BootstrapConfigReadyV1Beta2Condition,
+	clusterv1.InfrastructureReadyV1Beta2Condition,
+	clusterv1.ClusterControlPlaneInitializedV1Beta2Condition,
+	clusterv1.ClusterControlPlaneAvailableV1Beta2Condition,
+	clusterv1.ClusterWorkersAvailableV1Beta2Condition,
+	kubeadmControlPlaneCertificatesAvailableV1Beta2Condition,
+	kubeadmControlPlaneInitializedV1Beta2Condition,
+	kubeadmControlPlaneEtcdClusterHealthyV1Beta2Condition,
+	kubeadmControlPlaneControlPlaneComponentsHealthyV1Beta2Condition,
+	clusterv1.MachineNodeHealthyV1Beta2Condition,
+	clusterv1.MachineNodeReadyV1Beta2Condition,
+	kubeadmControlPlaneMachineEtcdPodHealthyV1Beta2Condition,
+	kubeadmControlPlaneMachineEtcdMemberHealthyV1Beta2Condition,
+	kubeadmControlPlaneMachineAPIServerPodHealthyV1Beta2Condition,
+	kubeadmControlPlaneMachineControllerManagerPodHealthyV1Beta2Condition,
+	kubeadmControlPlaneMachineSchedulerPodHealthyV1Beta2Condition,
+	clusterv1.MachineHealthCheckSucceededV1Beta2Condition,
+	clusterv1.MachineOwnerRemediatedV1Beta2Condition,
+	clusterv1.ClusterTopologyReconciledV1Beta2Condition,
+	clusterv1.RemediatingV1Beta2Condition,
+	clusterv1.ScalingDownV1Beta2Condition,
+	clusterv1.ScalingUpV1Beta2Condition,
+	clusterv1.MachinesReadyV1Beta2Condition,
+	clusterv1.MachinesUpToDateV1Beta2Condition,
+	clusterv1.PausedV1Beta2Condition,
+	clusterv1.DeletingV1Beta2Condition,
 }
 
-var last = map[string]int{
-	clusterv1.PausedV1Beta2Condition:   0,
-	clusterv1.DeletingV1Beta2Condition: 1,
-}
+// Constants inlined for ordering (we want to avoid importing the KCP API package).
+const (
+	kubeadmControlPlaneCertificatesAvailableV1Beta2Condition              = "CertificatesAvailable"
+	kubeadmControlPlaneInitializedV1Beta2Condition                        = "Initialized"
+	kubeadmControlPlaneEtcdClusterHealthyV1Beta2Condition                 = "EtcdClusterHealthy"
+	kubeadmControlPlaneControlPlaneComponentsHealthyV1Beta2Condition      = "ControlPlaneComponentsHealthy"
+	kubeadmControlPlaneMachineAPIServerPodHealthyV1Beta2Condition         = "APIServerPodHealthy"
+	kubeadmControlPlaneMachineControllerManagerPodHealthyV1Beta2Condition = "ControllerManagerPodHealthy"
+	kubeadmControlPlaneMachineSchedulerPodHealthyV1Beta2Condition         = "SchedulerPodHealthy"
+	kubeadmControlPlaneMachineEtcdPodHealthyV1Beta2Condition              = "EtcdPodHealthy"
+	kubeadmControlPlaneMachineEtcdMemberHealthyV1Beta2Condition           = "EtcdMemberHealthy"
+)

util/conditions/v1beta2/sort_test.go

@@ -46,10 +46,10 @@ func TestDefaultSortLessFunc(t *testing.T) {
 	g.Expect(conditions).To(Equal([]metav1.Condition{
 		{Type: clusterv1.AvailableV1Beta2Condition},
 		{Type: clusterv1.ReadyV1Beta2Condition},
+		{Type: clusterv1.PausedV1Beta2Condition},
+		{Type: clusterv1.DeletingV1Beta2Condition},
 		{Type: "A"},
 		{Type: "B"},
 		{Type: "C!"},
-		{Type: clusterv1.PausedV1Beta2Condition},
-		{Type: clusterv1.DeletingV1Beta2Condition},
 	}))
 }