add skeleton of endpoint to receive github webhooks

spiffworkflow-backend/src/spiffworkflow_backend/api.yml

@@ -490,6 +490,20 @@ paths:
                 items:
                   $ref: "#/components/schemas/Process"
 
+  /github-webhook-receive:
+    post:
+      operationId: spiffworkflow_backend.routes.process_api_blueprint.github_webhook_receive
+      summary: receives push webhooks from github so we can keep our process model repo up to date
+      tags:
+        - git
+      responses:
+        "200":
+          description: Success
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/OkTrue"
+
   /process-instances:
     parameters:
       - name: process_model_identifier

spiffworkflow-backend/src/spiffworkflow_backend/routes/process_api_blueprint.py

@@ -1816,9 +1816,20 @@ def get_spiff_task_from_process_instance(
     return spiff_task
 
 
+# sample body:
+# {'ref': 'refs/heads/main', 'repository': {'name': 'sample-process-models',
+# 'full_name': 'sartography/sample-process-models', 'private': False .... }}
+def github_webhook_receive(body: dict) -> Response:
+    """Github_webhook_receive."""
+    print(f"body: {body}")
+    return Response(json.dumps({"ok": True}), status=200, mimetype="application/json")
+
+
 #
 # Methods for secrets CRUD - maybe move somewhere else:
 #
+
+
 def get_secret(key: str) -> Optional[str]:
     """Get_secret."""
     return SecretService.get_secret(key)

spiffworkflow-backend/src/spiffworkflow_backend/services/authorization_service.py

@@ -232,7 +232,11 @@ class AuthorizationService:
     def should_disable_auth_for_request(cls) -> bool:
         """Should_disable_auth_for_request."""
         swagger_functions = ["get_json_spec"]
-        authentication_exclusion_list = ["status", "authentication_callback"]
+        authentication_exclusion_list = [
+            "status",
+            "authentication_callback",
+            "github_webhook_receive",
+        ]
         if request.method == "OPTIONS":
             return True