feat: add DRPC controller for ProtectedApplicationView generation

Implements controller to automatically create/update ProtectedApplicationView
resources from DRPlacementControl, discovering application types (ApplicationSet/
Subscription/Discovered) and aggregating placement and DR status.

- Add DRPCReconciler with app discovery logic via Placement reverse mapping
- Support ApplicationSet (ClusterDecisionResource matchLabels) and Subscription
  (PlacementRef + parent Application lookup)
- Include secondary watches for Placement/PlacementDecision cluster changes
- Register required schemes (argoproj.io, cluster.open-cluster-management.io,
  apps.open-cluster-management.io) in manager
- Add RBAC permissions for drplacementcontrols, applicationsets, subscriptions,
  applications, placements, and protectedapplicationviews

Signed-off-by: vbadrina <[email protected]>

Author: vbnrh

api/v1alpha1/protectedapplicationview_types.go

@@ -0,0 +1,167 @@
+package v1alpha1
+
+import (
+	ramenv1alpha1 "github.com/ramendr/ramen/api/v1alpha1"
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+type ApplicationType string
+
+const (
+	// ApplicationSetType represents an ArgoCD ApplicationSet application
+	ApplicationSetType ApplicationType = "ApplicationSet"
+
+	// SubscriptionType represents an OpenShift Subscription application
+	SubscriptionType ApplicationType = "Subscription"
+
+	// DiscoveredType represents a discovered application (neither ApplicationSet nor Subscription)
+	DiscoveredType ApplicationType = "Discovered"
+)
+
+// ProtectedApplicationViewSpec defines the desired state of ProtectedApplicationView
+type ProtectedApplicationViewSpec struct {
+
+	// DRPCRef references the DRPlacementControl protecting this application
+	// +kubebuilder:validation:Required
+	DRPCRef corev1.ObjectReference `json:"drpcRef"`
+
+	// ApplicationRef references the source application resource
+	// +kubebuilder:validation:Required
+	ApplicationRef corev1.ObjectReference `json:"applicationRef"`
+}
+
+// PlacementInfo contains information about application placement
+type PlacementInfo struct {
+	// Name of the Placement resource
+	// +kubebuilder:validation:Required
+	Name string `json:"name"`
+
+	// Namespace of the Placement resource
+	// +kubebuilder:validation:Required
+	Namespace string `json:"namespace"`
+
+	// Kind of placement (Placement or PlacementRule)
+	// +kubebuilder:validation:Required
+	// +kubebuilder:validation:Enum=Placement;PlacementRule
+	Kind string `json:"kind"`
+
+	// SelectedClusters is the list of clusters where application is placed
+	// +optional
+	SelectedClusters []string `json:"selectedClusters,omitempty"`
+}
+
+// DRInfo contains disaster recovery configuration information
+type DRInfo struct {
+	// DRPolicyRef references the DRPolicy used for protection
+	// +kubebuilder:validation:Required
+	DRPolicyRef corev1.ObjectReference `json:"drpolicyRef"`
+
+	// DRClusters is the list of clusters in the DR relationship
+	// +optional
+	DRClusters []string `json:"drClusters,omitempty"`
+
+	// PrimaryCluster is the current primary/active cluster
+	// +optional
+	PrimaryCluster string `json:"primaryCluster,omitempty"`
+
+	// ProtectedNamespaces contains list of namespaces protected by this DRPC
+	// +optional
+	ProtectedNamespaces []string `json:"protectedNamespaces,omitempty"`
+
+	// Status contains current DR status information
+	// +optional
+	Status DRStatusInfo `json:"status,omitempty"`
+}
+
+// DRStatusInfo contains disaster recovery status
+type DRStatusInfo struct {
+	// Phase represents current DR phase (Relocated, FailingOver, etc.)
+	// +optional
+	Phase ramenv1alpha1.DRState `json:"phase,omitempty"`
+
+	LastGroupSyncTime *metav1.Time `json:"lastGroupSyncTime,omitempty"`
+
+	// Conditions represent the latest available observations of the DR state
+	// +optional
+	// +listType=map
+	// +listMapKey=type
+	Conditions []metav1.Condition `json:"conditions,omitempty"`
+}
+
+type ApplicationInfo struct {
+	// Type of application (ApplicationSet, Subscription, or Discovered)
+	// +kubebuilder:validation:Required
+	// +kubebuilder:validation:Enum=ApplicationSet;Subscription;Discovered
+	Type ApplicationType `json:"type"`
+
+	// SubscriptionInfo contains Subscription-specific information
+	// +optional
+	SubscriptionInfo *SubscriptionInfo `json:"subscriptionInfo,omitempty"`
+}
+
+// SubscriptionInfo contains Subscription-specific information
+type SubscriptionInfo struct {
+	// SubscriptionRefs lists Subscription resources in this DRPC group
+	// +optional
+	SubscriptionRefs []corev1.ObjectReference `json:"subscriptionRefs,omitempty"`
+}
+
+// ProtectedApplicationViewStatus defines the observed state of ProtectedApplicationView
+type ProtectedApplicationViewStatus struct {
+	ApplicationInfo ApplicationInfo `json:"applicationInfo,omitempty"`
+
+	// Placements contains placement information for this application
+	// +optional
+	// +kubebuilder:validation:MaxItems=10
+	PlacementInfo []PlacementInfo `json:"placementInfo,omitempty"`
+
+	// DRInfo contains disaster recovery configuration
+	// +kubebuilder:validation:Required
+	DRInfo DRInfo `json:"drInfo"`
+
+	// ObservedGeneration is the generation most recently observed
+	// +optional
+	ObservedGeneration int64 `json:"observedGeneration,omitempty"`
+
+	// LastSyncTime is the last time the view was synchronized
+	// +optional
+	LastSyncTime *metav1.Time `json:"lastSyncTime,omitempty"`
+
+	// Conditions represent the latest available observations of the application state
+	// +optional
+	// +listType=map
+	// +listMapKey=type
+	Conditions []metav1.Condition `json:"conditions,omitempty"`
+}
+
+// +kubebuilder:object:root=true
+// +kubebuilder:subresource:status
+// +kubebuilder:resource:scope=Namespaced,shortName=pav
+// +kubebuilder:printcolumn:name="Type",type=string,JSONPath=`.status.applicationInfo.type`
+// +kubebuilder:printcolumn:name="App",type=string,JSONPath=`.spec.applicationRef.name`
+// +kubebuilder:printcolumn:name="DRPolicy",type=string,JSONPath=`.status.drInfo.drPolicyRef.name`
+// +kubebuilder:printcolumn:name="Status",type=string,JSONPath=`.status.drInfo.status.phase`
+// +kubebuilder:printcolumn:name="Age",type=date,JSONPath=`.metadata.creationTimestamp`
+
+// ProtectedApplicationView represents an aggregated view of a protected application
+type ProtectedApplicationView struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	Spec   ProtectedApplicationViewSpec   `json:"spec,omitempty"`
+	Status ProtectedApplicationViewStatus `json:"status,omitempty"`
+}
+
+// +kubebuilder:object:root=true
+
+// ProtectedApplicationViewList contains a list of ProtectedApplicationView
+type ProtectedApplicationViewList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []ProtectedApplicationView `json:"items"`
+}
+
+func init() {
+	SchemeBuilder.Register(&ProtectedApplicationView{}, &ProtectedApplicationViewList{})
+}