feat: support get workflow task execution status (#6411)

api/controllers/service_api/app/workflow.py

@@ -1,6 +1,6 @@
 import logging
 
-from flask_restful import Resource, reqparse
+from flask_restful import Resource, fields, marshal_with, reqparse
 from werkzeug.exceptions import InternalServerError
 
 from controllers.service_api import api
@@ -21,14 +21,43 @@ from core.errors.error import (
     QuotaExceededError,
 )
 from core.model_runtime.errors.invoke import InvokeError
+from extensions.ext_database import db
 from libs import helper
 from models.model import App, AppMode, EndUser
+from models.workflow import WorkflowRun
 from services.app_generate_service import AppGenerateService
 
 logger = logging.getLogger(__name__)
 
 
 class WorkflowRunApi(Resource):
+    workflow_run_fields = {
+        'id': fields.String,
+        'workflow_id': fields.String,
+        'status': fields.String,
+        'inputs': fields.Raw,
+        'outputs': fields.Raw,
+        'error': fields.String,
+        'total_steps': fields.Integer,
+        'total_tokens': fields.Integer,
+        'created_at': fields.DateTime,
+        'finished_at': fields.DateTime,
+        'elapsed_time': fields.Float,
+    }
+
+    @validate_app_token
+    @marshal_with(workflow_run_fields)
+    def get(self, app_model: App, workflow_id: str):
+        """
+        Get a workflow task running detail
+        """
+        app_mode = AppMode.value_of(app_model.mode)
+        if app_mode != AppMode.WORKFLOW:
+            raise NotWorkflowAppError()
+
+        workflow_run = db.session.query(WorkflowRun).filter(WorkflowRun.id == workflow_id).first()
+        return workflow_run
+
     @validate_app_token(fetch_user_arg=FetchUserArg(fetch_from=WhereisUserArg.JSON, required=True))
     def post(self, app_model: App, end_user: EndUser):
         """
@@ -88,5 +117,5 @@ class WorkflowTaskStopApi(Resource):
         }
 
 
-api.add_resource(WorkflowRunApi, '/workflows/run')
+api.add_resource(WorkflowRunApi, '/workflows/run/<string:workflow_id>', '/workflows/run')
 api.add_resource(WorkflowTaskStopApi, '/workflows/tasks/<string:task_id>/stop')