Add component metadata YAML for Azure Event Hubs pubsub (#2788)

Signed-off-by: Yash Nisar <yashnisar@microsoft.com>
Co-authored-by: Bernd Verst <github@bernd.dev>

pubsub/azure/eventhubs/metadata.yaml

@@ -0,0 +1,101 @@
+# yaml-language-server: $schema=../../../../component-metadata-schema.json
+schemaVersion: v1
+type: pubsub
+name: azure.eventhubs
+version: v1
+status: stable
+title: "Azure Event Hubs"
+urls:
+  - title: Reference
+    url: https://docs.dapr.io/reference/components-reference/supported-pubsub/setup-azure-eventhubs/
+authenticationProfiles:
+  - title: "Connection string"
+    description: "Authenticate using a connection string."
+    metadata:
+      - name: connectionString
+        required: true
+        sensitive: true
+        description: |
+          Connection string for the Event Hub or the Event Hub namespace.
+        example: '"Endpoint=sb://{EventHubNamespace}.servicebus.windows.net/;SharedAccessKeyName={PolicyName};SharedAccessKey={Key};EntityPath={EventHub}"'
+builtinAuthenticationProfiles:
+  - name: "azuread"
+    metadata:
+      - name: eventHubNamespace
+        type: string
+        required: true
+        description: |
+          The Event Hub Namespace name.
+        example: '"namespace"'
+      - name: enableEntityManagement
+        type: bool
+        required: false
+        default: "false"
+        description: |
+          Allow management of the Event Hub namespace and storage account.
+
+      # The following four properties are needed only if enableEntityManagement is set to true
+      - name: resourceGroupName
+        type: string
+        required: false
+        description: |
+          Name of the resource group the Event Hub namespace is part of.
+          Required when entity management is enabled.
+        example: '"test-rg"'
+      - name: subscriptionId
+        type: string
+        required: false
+        description: |
+          Azure subscription ID value. Required when entity management is enabled
+        example: '"00112233-4455-6677-8899-aabbccddeeff"'
+      - name: messageRetentionInDays
+        type: number
+        required: false
+        default: "1"
+        example: "90"
+        description: |
+          Number of days to retain messages for in the newly created Event
+          Hub namespace. Used only when entity management is enabled.
+      - name: partitionCount
+        type: number
+        required: false
+        default: "1"
+        example: "3"
+        description: |
+          Number of partitions for the new Event Hub namespace. Used only when
+          entity management is enabled.
+metadata:
+  - name: storageAccountKey
+    type: string
+    required: false
+    description: |
+      Storage account key for the checkpoint store account. When using Azure AD,
+      it is possible to omit this if the service principal has access to the
+      storage account too.
+      Property "storageAccountKey" is ignored when "storageConnectionString" is present
+    example: '"112233445566778899"'
+  - name: storageConnectionString
+    type: string
+    required: false
+    description: |
+      Connection string for the checkpoint store, alternative to specifying
+      storageAccountKey.
+      Property "storageAccountKey" is ignored when "storageConnectionString" is present
+  - name: storageAccountName
+    type: string
+    required: true
+    description: |
+      Storage account name to use for the checkpoint store.
+    example: '"myeventhubstorage"'
+  - name: storageContainerName
+    type: string
+    required: true
+    description: |
+      Storage container name.
+    example: '"myeventhubstoragecontainer"'
+  - name: consumerId
+    type: string
+    required: true # consumerGroup is an alias for this field, let's promote this to default
+    description: |
+      The name of the Event Hubs Consumer Group to listen on.
+    example: '"group1"'