Fix process data get subprocess (#1493) (#1514)

* added test to make sure we can get the data object of a sub process

* avoid the processor altogether to get data objects but use the db directly

---------

Co-authored-by: jasquat <jasquat@users.noreply.github.com>

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

@@ -3,7 +3,6 @@ import os
 import uuid
 from typing import Any
 from typing import TypedDict
-from uuid import UUID
 
 import flask.wrappers
 import sentry_sdk
@@ -30,9 +29,11 @@ from spiffworkflow_backend.exceptions.error import HumanTaskAlreadyCompletedErro
 from spiffworkflow_backend.exceptions.error import HumanTaskNotFoundError
 from spiffworkflow_backend.exceptions.error import UserDoesNotHaveAccessToTaskError
 from spiffworkflow_backend.exceptions.process_entity_not_found_error import ProcessEntityNotFoundError
+from spiffworkflow_backend.models.bpmn_process import BpmnProcessModel
 from spiffworkflow_backend.models.db import db
 from spiffworkflow_backend.models.human_task import HumanTaskModel
 from spiffworkflow_backend.models.human_task_user import HumanTaskUserModel
+from spiffworkflow_backend.models.json_data import JsonDataModel
 from spiffworkflow_backend.models.principal import PrincipalModel
 from spiffworkflow_backend.models.process_instance import ProcessInstanceModel
 from spiffworkflow_backend.models.process_instance import ProcessInstanceStatus
@@ -135,43 +136,35 @@ def _process_data_fetcher(
     bpmn_process_guid: str | None = None,
     process_identifier: str | None = None,
 ) -> flask.wrappers.Response:
-    if process_identifier and bpmn_process_guid is None:
-        raise ApiError(
-            error_code="missing_required_parameter",
-            message="process_identifier was given but bpmn_process_guid was not. Both must be provided if either is required.",
-            status_code=404,
-        )
-    if process_identifier is None and bpmn_process_guid:
-        raise ApiError(
-            error_code="missing_required_parameter",
-            message="bpmn_process_guid was given but process_identifier was not. Both must be provided if either is required.",
-            status_code=404,
-        )
-
     process_instance = _find_process_instance_by_id_or_raise(process_instance_id)
-    processor = ProcessInstanceProcessor(process_instance)
+    if bpmn_process_guid is not None:
+        bpmn_process = BpmnProcessModel.query.filter_by(guid=bpmn_process_guid).first()
+    else:
+        bpmn_process = process_instance.bpmn_process
+    if bpmn_process is None:
+        raise ApiError(
+            error_code="bpmn_process_not_found",
+            message=f"Cannot find a bpmn process with guid '{bpmn_process_guid}' for process instance {process_instance.id}",
+            status_code=404,
+        )
 
-    bpmn_process_instance = processor.bpmn_process_instance
+    bpmn_process_data = JsonDataModel.find_data_dict_by_hash(bpmn_process.json_data_hash)
-    bpmn_process_data = processor.get_data()
+    if bpmn_process_data is None:
-    if process_identifier and bpmn_process_instance.spec.name != process_identifier:
+        raise ApiError(
-        bpmn_process_instance = processor.bpmn_process_instance.subprocesses.get(UUID(bpmn_process_guid))
+            error_code="bpmn_process_data_not_found",
-        if bpmn_process_instance is None:
+            message=f"Cannot find a bpmn process data with guid '{bpmn_process_guid}' for process instance {process_instance.id}",
-            raise ApiError(
+            status_code=404,
-                error_code="bpmn_process_not_found",
+        )
-                message=f"Cannot find a bpmn process with guid '{bpmn_process_guid}' for process instance {process_instance.id}",
-                status_code=404,
-            )
-        bpmn_process_data = bpmn_process_instance.data
 
-    data_objects = bpmn_process_instance.spec.data_objects
+    data_objects = bpmn_process_data["data_objects"]
     data_object = data_objects.get(process_data_identifier)
 
     if data_object is None:
         raise ApiError(
             error_code="data_object_not_found",
             message=(
-                f"Cannot find a data object with identifier '{process_data_identifier}' for bpmn process '{process_identifier}'"
+                f"Cannot find a data object with identifier '{process_data_identifier}' for bpmn process"
-                f" in process instance {process_instance.id}"
+                f" '{bpmn_process.bpmn_process_definition.bpmn_identifier}' in process instance {process_instance.id}"
             ),
             status_code=404,
         )

spiffworkflow-backend/tests/spiffworkflow_backend/integration/test_process_api.py

@@ -5,6 +5,7 @@ import os
 import time
 from hashlib import sha256
 from typing import Any
+from unittest.mock import patch
 
 import flask
 import pytest
@@ -12,6 +13,8 @@ from flask.app import Flask
 from flask.testing import FlaskClient
 from SpiffWorkflow.util.task import TaskState  # type: ignore
 from spiffworkflow_backend.exceptions.process_entity_not_found_error import ProcessEntityNotFoundError
+from spiffworkflow_backend.models.bpmn_process import BpmnProcessModel
+from spiffworkflow_backend.models.bpmn_process_definition import BpmnProcessDefinitionModel
 from spiffworkflow_backend.models.db import db
 from spiffworkflow_backend.models.process_instance import ProcessInstanceModel
 from spiffworkflow_backend.models.process_instance import ProcessInstanceStatus
@@ -3323,6 +3326,55 @@ class TestProcessApi(BaseTest):
         assert response.json is not None
         assert response.json["process_data_value"] == "hey"
 
+    def test_process_data_show_with_sub_process(
+        self,
+        app: Flask,
+        client: FlaskClient,
+        with_db_and_bpmn_file_cleanup: None,
+        with_super_admin_user: UserModel,
+    ) -> None:
+        process_model = load_test_spec(
+            "test_group/with-service-task-call-activity-sub-process",
+            process_model_source_directory="with-service-task-call-activity-sub-process",
+        )
+        process_instance_one = self.create_process_instance_from_process_model(process_model)
+        processor = ProcessInstanceProcessor(process_instance_one)
+        connector_response = {
+            "body": '{"ok": true}',
+            "mimetype": "application/json",
+            "http_status": 200,
+            "operator_identifier": "http/GetRequestV2",
+        }
+        with patch("requests.post") as mock_post:
+            mock_post.return_value.status_code = 200
+            mock_post.return_value.ok = True
+            mock_post.return_value.text = json.dumps(connector_response)
+            processor.do_engine_steps(save=True)
+        self.complete_next_manual_task(processor, execution_mode="synchronous")
+        self.complete_next_manual_task(processor, execution_mode="synchronous", data={"firstName": "Chuck"})
+        assert process_instance_one.status == "complete"
+
+        process_identifier = "call_activity_sub_process"
+        bpmn_processes = (
+            BpmnProcessModel.query.join(
+                BpmnProcessDefinitionModel, BpmnProcessDefinitionModel.id == BpmnProcessModel.bpmn_process_definition_id
+            )
+            .filter(BpmnProcessDefinitionModel.bpmn_identifier == process_identifier)
+            .all()
+        )
+        assert len(bpmn_processes) == 1
+        bpmn_process = bpmn_processes[0]
+
+        response = client.get(
+            f"/v1.0/process-data/default/{self.modify_process_identifier_for_path_param(process_model.id)}/sub_level_data_object_three/"
+            f"{process_instance_one.id}?process_identifier={process_identifier}&bpmn_process_guid={bpmn_process.guid}",
+            headers=self.logged_in_headers(with_super_admin_user),
+        )
+
+        assert response.status_code == 200
+        assert response.json is not None
+        assert response.json["process_data_value"] == "d"
+
     def _setup_testing_instance(
         self,
         client: FlaskClient,