ceph: implement bucket notifications for object storage

following the design from here:
https://github.com/rook/rook/blob/master/design/ceph/object/ceph-bucket-notification-crd.md

Signed-off-by: Yuval Lifshitz <ylifshit@redhat.com>

cluster/charts/rook-ceph/templates/resources.yaml

@@ -348,6 +348,232 @@ status:
 ---
 apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
+metadata:
+  annotations:
+    controller-gen.kubebuilder.io/version: v0.5.1-0.20210420220833-f284e2e8098c
+    helm.sh/resource-policy: keep
+  creationTimestamp: null
+  name: cephbucketnotifications.ceph.rook.io
+spec:
+  group: ceph.rook.io
+  names:
+    kind: CephBucketNotification
+    listKind: CephBucketNotificationList
+    plural: cephbucketnotifications
+    singular: cephbucketnotification
+  scope: Namespaced
+  versions:
+    - name: v1
+      schema:
+        openAPIV3Schema:
+          description: CephBucketNotification represents a Bucket Notifications
+          properties:
+            apiVersion:
+              description: 'APIVersion defines the versioned schema of this representation of an object. Servers should convert recognized schemas to the latest internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources'
+              type: string
+            kind:
+              description: 'Kind is a string value representing the REST resource this object represents. Servers may infer this from the endpoint the client submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds'
+              type: string
+            metadata:
+              type: object
+            spec:
+              description: BucketNotificationSpec represent the spec of a Bucket Notification
+              properties:
+                events:
+                  description: List of events that should trigger the notification
+                  items:
+                    type: string
+                  type: array
+                filter:
+                  description: Spec of notification filter
+                  properties:
+                    keyFilters:
+                      description: Filters based on the object's key
+                      items:
+                        description: NotificationFilterRule represent a single rule in the Notification Filter spec
+                        properties:
+                          name:
+                            description: Name of the filter - Prefix/Suffix/Regex in case of Key or the value if the metadata or tag in these cases
+                            type: string
+                          value:
+                            description: Value to filter on
+                            type: string
+                        required:
+                          - name
+                          - value
+                        type: object
+                      type: array
+                    metadataFilters:
+                      description: Filters based on the object's metadata
+                      items:
+                        description: NotificationFilterRule represent a single rule in the Notification Filter spec
+                        properties:
+                          name:
+                            description: Name of the filter - Prefix/Suffix/Regex in case of Key or the value if the metadata or tag in these cases
+                            type: string
+                          value:
+                            description: Value to filter on
+                            type: string
+                        required:
+                          - name
+                          - value
+                        type: object
+                      type: array
+                    tagFilters:
+                      description: Filters based on the object's tags
+                      items:
+                        description: NotificationFilterRule represent a single rule in the Notification Filter spec
+                        properties:
+                          name:
+                            description: Name of the filter - Prefix/Suffix/Regex in case of Key or the value if the metadata or tag in these cases
+                            type: string
+                          value:
+                            description: Value to filter on
+                            type: string
+                        required:
+                          - name
+                          - value
+                        type: object
+                      type: array
+                  type: object
+                topicARN:
+                  description: The ARN of the topic associated with this notification
+                  type: string
+              required:
+                - topicARN
+              type: object
+            status:
+              description: Status represents the status of an object
+              properties:
+                phase:
+                  type: string
+              type: object
+              x-kubernetes-preserve-unknown-fields: true
+          required:
+            - metadata
+            - spec
+          type: object
+      served: true
+      storage: true
+      subresources:
+        status: {}
+status:
+  acceptedNames:
+    kind: ""
+    plural: ""
+  conditions: []
+  storedVersions: []
+---
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  annotations:
+    controller-gen.kubebuilder.io/version: v0.5.1-0.20210420220833-f284e2e8098c
+    helm.sh/resource-policy: keep
+  creationTimestamp: null
+  name: cephbuckettopics.ceph.rook.io
+spec:
+  group: ceph.rook.io
+  names:
+    kind: CephBucketTopic
+    listKind: CephBucketTopicList
+    plural: cephbuckettopics
+    singular: cephbuckettopic
+  scope: Namespaced
+  versions:
+    - name: v1
+      schema:
+        openAPIV3Schema:
+          description: CephBucketTopic represents a Ceph Object Topic for Bucket Notifications
+          properties:
+            apiVersion:
+              description: 'APIVersion defines the versioned schema of this representation of an object. Servers should convert recognized schemas to the latest internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources'
+              type: string
+            kind:
+              description: 'Kind is a string value representing the REST resource this object represents. Servers may infer this from the endpoint the client submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds'
+              type: string
+            metadata:
+              type: object
+            spec:
+              description: BucketTopicSpec represent the spec of a Bucket Topic
+              properties:
+                amqp:
+                  description: Spec of AMQP endpoint
+                  properties:
+                    ackLevel:
+                      description: The ack level required for this topic (none/broker/routeable)
+                      type: string
+                    caLocation:
+                      description: This specified CA will be used, instead of the default one, to authenticate the broker
+                      type: string
+                    exchange:
+                      description: Name of the exchange that is used to route messages based on topics
+                      type: string
+                    verifySSL:
+                      description: Indicate whether the server certificate is validated by the client or not
+                      type: boolean
+                  required:
+                    - exchange
+                  type: object
+                endpoint:
+                  description: The URI of an endpoint to push notification to
+                  type: string
+                http:
+                  description: Spec of HTTP endpoint
+                  properties:
+                    verifySSL:
+                      description: Indicate whether the server certificate is validated by the client or not
+                      type: boolean
+                  type: object
+                kafka:
+                  description: Spec of Kafka endpoint
+                  properties:
+                    ackLevel:
+                      description: The ack level required for this topic (none/broker)
+                      type: string
+                    caLocation:
+                      description: This specified CA will be used, instead of the default one, to authenticate the broker
+                      type: string
+                    useSSL:
+                      description: Indicate whether to use SSL when communicating with the broker
+                      type: boolean
+                    verifySSL:
+                      description: Indicate whether the server certificate is validated by the client or not
+                      type: boolean
+                  type: object
+                opaqueData:
+                  description: Data which is sent in each event
+                  type: string
+                persistent:
+                  description: Indication whether notifications to this endpoint are persistent or not
+                  type: boolean
+              required:
+                - endpoint
+              type: object
+            status:
+              description: Status represents the status of an object
+              properties:
+                phase:
+                  type: string
+              type: object
+              x-kubernetes-preserve-unknown-fields: true
+          required:
+            - metadata
+            - spec
+          type: object
+      served: true
+      storage: true
+      subresources:
+        status: {}
+status:
+  acceptedNames:
+    kind: ""
+    plural: ""
+  conditions: []
+  storedVersions: []
+---
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
 metadata:
   annotations:
     controller-gen.kubebuilder.io/version: v0.5.1-0.20210420220833-f284e2e8098c