cloudapi: Add support for GCP as upload target

Add support for GCP as an upload target to the internal API.

Extend the cloudapi to allow GCP as an upload target in the compose
request. Regenerate the cloudapi go code. Added GCP-specific upload
result component in the API definition, similar to AWS. It is not yet
used, but it will be once returning a target-specific result from
worker is supported.

Add support for GCP upload target to the worker job implementation.

Signed-off-by: Tomas Hozza <thozza@redhat.com>

internal/cloudapi/openapi.yml

@@ -122,6 +122,15 @@ components:
         ami_id:
           type: string
           example: 'ami-0c830793775595d4b'
+    GCPUploadStatus:
+      type: object
+      properties:
+        project_id:
+          type: string
+          example: 'ascendant-braid-303513'
+        image_name:
+          type: string
+          example: 'my-image'
     ComposeRequest:
       type: object
       required:
@@ -188,9 +197,10 @@ components:
         options:
           oneOf:
             -  $ref: '#/components/schemas/AWSUploadRequestOptions'
+            -  $ref: '#/components/schemas/GCPUploadRequestOptions'
     UploadTypes:
       type: string
-      enum: ['aws']
+      enum: ['aws', 'gcp']
     AWSUploadRequestOptions:
       type: object
       required:
@@ -243,6 +253,59 @@ components:
           example: ['123456789012']
           items:
             type: string
+    GCPUploadRequestOptions:
+      type: object
+      required:
+        - bucket
+      properties:
+        region:
+          type: string
+          example: 'eu'
+          description: |
+            The GCP region where the OS image will be imported to and shared from.
+            The value must be a valid GCP location. See https://cloud.google.com/storage/docs/locations.
+            If not specified, the multi-region location closest to the source
+            (source Storage Bucket location) is chosen automatically.
+        bucket:
+          type: string
+          example: 'my-example-bucket'
+          description: 'Name of an existing STANDARD Storage class Bucket.'
+# don't expose the os type for now
+#        os:
+#          type: string
+#          example: 'rhel-8-byol'
+#          description: 'OS of the disk image being imported needed for installation of GCP guest tools.'
+        image_name:
+          type: string
+          example: 'my-image'
+          description: |
+            The name to use for the imported and shared Compute Node image.
+            The image name must be unique within the GCP project, which is used
+            for the OS image upload and import. If not specified a random
+            'composer-api-<uuid>' string is used as the image name.
+        share_with_accounts:
+          type: array
+          example: [
+            'user:alice@example.com',
+            'serviceAccount:my-other-app@appspot.gserviceaccount.com',
+            'group:admins@example.com',
+            'domain:example.com'
+            ]
+          description: |
+            List of valid Google accounts to share the imported Compute Node image with.
+            Each string must contain a specifier of the account type. Valid formats are:
+              - 'user:{emailid}': An email address that represents a specific
+                Google account. For example, 'alice@example.com'.
+              - 'serviceAccount:{emailid}': An email address that represents a
+                service account. For example, 'my-other-app@appspot.gserviceaccount.com'.
+              - 'group:{emailid}': An email address that represents a Google group.
+                For example, 'admins@example.com'.
+              - 'domain:{domain}': The G Suite domain (primary) that represents all
+                the users of that domain. For example, 'google.com' or 'example.com'.
+            If not specified, the imported Compute Node image is not shared with any
+            account.
+          items:
+            type: string
     Customizations:
       type: object
       properties: