Support for constants

Author: Alan Christie

decoder/schema.yaml

@@ -154,6 +154,7 @@ definitions:
       value-from:
         oneOf:
         - $ref: '#/definitions/environment-value-from-api-token'
+        - $ref: '#/definitions/environment-value-from-constant'
         - $ref: '#/definitions/environment-value-from-secret'
     required:
     - name
@@ -182,6 +183,22 @@ definitions:
     required:
     - api-token
 
+  # An Image environment from a constant.
+  environment-value-from-constant:
+    type: object
+    additionalProperties: false
+    properties:
+      constant:
+        type: object
+        properties:
+          # The hard-coded value (constant)
+          value:
+            type: string
+        required:
+        - value
+    required:
+    - constant
+
   # An Image environment from a Kubernetes 'secret'.
   # At the moment we expect the secret to be unencrypted,
   # just 'opaque', so it can be read by the DM without special actions.

tests/test_validate_job_schema.py

@@ -50,6 +50,23 @@ def test_validate_image_env_from_api_token():
     assert error is None
 
 
+def test_validate_image_env_from_constant():
+    # Arrange
+    text: Dict[str, Any] = deepcopy(_MINIMAL)
+    demo_job: Dict[str, Any] = text['jobs']['demo']
+    demo_job['image']['environment'] = \
+        [{'name': 'ENV_VAR',
+          'value-from': {
+              'constant': {
+                  'value': '123'}}}]
+
+    # Act
+    error = decoder.validate_job_schema(text)
+
+    # Assert
+    assert error is None
+
+
 def test_validate_image_env_from_secret():
     # Arrange
     text: Dict[str, Any] = deepcopy(_MINIMAL)