feat: add generation related fields to policy snapshot status (#428)

apis/placement/v1beta1/commons.go

@@ -26,6 +26,10 @@ const (
 
 	// FleetResourceLabelKey is that label that indicates the resource is a fleet resource.
 	FleetResourceLabelKey = fleetPrefix + "isFleetResource"
+
+	// CRPGenerationAnnotation is the annotation that indicates the generation of the CRP from
+	// which an object is derived or last updated.
+	CRPGenerationAnnotation = fleetPrefix + "CRPGeneration"
 )
 
 const (

apis/placement/v1beta1/policysnapshot_types.go

@@ -67,6 +67,12 @@ type SchedulingPolicySnapshotSpec struct {
 type SchedulingPolicySnapshotStatus struct {
 	// +patchMergeKey=type
 	// +patchStrategy=merge
+
+	// ObservedCRPGeneration is the generation of the CRP which the scheduler uses to perform
+	// the scheduling cycle and prepare the scheduling status.
+	// +required
+	ObservedCRPGeneration int64 `json:"observedCRPGeneration"`
+
 	// +listType=map
 	// +listMapKey=type
 

config/crd/bases/placement.azure.com_clusterschedulingpolicysnapshots.yaml

@@ -383,6 +383,12 @@ spec:
                 x-kubernetes-list-map-keys:
                 - type
                 x-kubernetes-list-type: map
+              observedCRPGeneration:
+                description: ObservedCRPGeneration is the generation of the CRP which
+                  the scheduler uses to perform the scheduling cycle and prepare the
+                  scheduling status.
+                format: int64
+                type: integer
               targetClusters:
                 description: ClusterDecisions contains a list of names of member clusters
                   considered by the scheduler. Note that all the selected clusters
@@ -434,6 +440,8 @@ spec:
                   type: object
                 maxItems: 1000
                 type: array
+            required:
+            - observedCRPGeneration
             type: object
         required:
         - spec