remove the unused next_task key from api calls since nobody uses it w/ burnettk essweine (#688)

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

spiffworkflow-backend/src/spiffworkflow_backend/models/process_instance.py

@@ -5,7 +5,6 @@ from typing import Any
 import marshmallow
 from marshmallow import INCLUDE
 from marshmallow import Schema
-from marshmallow_enum import EnumField  # type: ignore
 from sqlalchemy import ForeignKey
 from sqlalchemy.orm import relationship
 from sqlalchemy.orm import validates
@@ -15,8 +14,6 @@ from spiffworkflow_backend.models.bpmn_process import BpmnProcessModel
 from spiffworkflow_backend.models.bpmn_process_definition import BpmnProcessDefinitionModel
 from spiffworkflow_backend.models.db import SpiffworkflowBaseDBModel
 from spiffworkflow_backend.models.db import db
-from spiffworkflow_backend.models.task import Task
-from spiffworkflow_backend.models.task import TaskSchema
 from spiffworkflow_backend.models.user import UserModel
 
 
@@ -189,15 +186,13 @@ class ProcessInstanceApi:
     def __init__(
         self,
         id: int,
-        status: ProcessInstanceStatus,
-        next_task: Task | None,
+        status: str,
         process_model_identifier: str,
         process_model_display_name: str,
         updated_at_in_seconds: int,
     ) -> None:
         self.id = id
         self.status = status
-        self.next_task = next_task  # The next task that requires user input.
         self.process_model_identifier = process_model_identifier
         self.process_model_display_name = process_model_display_name
         self.updated_at_in_seconds = updated_at_in_seconds
@@ -209,26 +204,20 @@ class ProcessInstanceApiSchema(Schema):
         fields = [
             "id",
             "status",
-            "next_task",
             "process_model_identifier",
             "process_model_display_name",
             "updated_at_in_seconds",
         ]
         unknown = INCLUDE
 
-    status = EnumField(ProcessInstanceStatus)
-    next_task = marshmallow.fields.Nested(TaskSchema, dump_only=True, required=False)
-
     @marshmallow.post_load
     def make_process_instance(self, data: dict[str, Any], **kwargs: dict) -> ProcessInstanceApi:
         keys = [
             "id",
             "status",
-            "next_task",
             "process_model_identifier",
             "process_model_display_name",
             "updated_at_in_seconds",
         ]
         filtered_fields = {key: data[key] for key in keys}
-        filtered_fields["next_task"] = TaskSchema().make_task(data["next_task"])
         return ProcessInstanceApi(**filtered_fields)

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

@@ -89,7 +89,7 @@ def process_instance_create(
 
 def _process_instance_run(
     process_instance: ProcessInstanceModel,
-) -> ProcessInstanceProcessor | None:
+) -> None:
     if process_instance.status != "not_started":
         raise ApiError(
             error_code="process_instance_not_runnable",
@@ -125,34 +125,18 @@ def _process_instance_run(
     if not current_app.config["SPIFFWORKFLOW_BACKEND_RUN_BACKGROUND_SCHEDULER_IN_CREATE_APP"]:
         MessageService.correlate_all_message_instances()
 
-    return processor
-
 
 def process_instance_run(
     modified_process_model_identifier: str,
     process_instance_id: int,
 ) -> flask.wrappers.Response:
     process_instance = _find_process_instance_by_id_or_raise(process_instance_id)
-    processor = _process_instance_run(process_instance)
+    _process_instance_run(process_instance)
 
-    # for mypy
-    if processor is not None:
-        process_instance_api = ProcessInstanceService.processor_to_process_instance_api(processor)
-        process_instance_data = processor.get_data()
+    process_instance_api = ProcessInstanceService.processor_to_process_instance_api(process_instance)
     process_instance_metadata = ProcessInstanceApiSchema().dump(process_instance_api)
-        process_instance_metadata["data"] = process_instance_data
     return Response(json.dumps(process_instance_metadata), status=200, mimetype="application/json")
 
-    return make_response(jsonify(process_instance), 200)
-
-
-def _process_instance_start(
-    process_model_identifier: str,
-) -> tuple[ProcessInstanceModel, ProcessInstanceProcessor | None]:
-    process_instance = _process_instance_create(process_model_identifier)
-    processor = _process_instance_run(process_instance)
-    return process_instance, processor
-
 
 def process_instance_terminate(
     process_instance_id: int,

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

@@ -289,33 +289,14 @@ class ProcessInstanceService:
         return processor
 
     @staticmethod
-    def processor_to_process_instance_api(
-        processor: ProcessInstanceProcessor, next_task: None = None
-    ) -> ProcessInstanceApi:
-        """Returns an API model representing the state of the current process_instance.
-
-        If requested, and possible, next_task is set to the current_task.
-        """
-        # navigation = processor.bpmn_process_instance.get_deep_nav_list()
-        # ProcessInstanceService.update_navigation(navigation, processor)
-        ProcessModelService.get_process_model(processor.process_model_identifier)
+    def processor_to_process_instance_api(process_instance: ProcessInstanceModel) -> ProcessInstanceApi:
+        """Returns an API model representing the state of the current process_instance."""
         process_instance_api = ProcessInstanceApi(
-            id=processor.get_process_instance_id(),
-            status=processor.get_status(),
-            next_task=None,
-            process_model_identifier=processor.process_model_identifier,
-            process_model_display_name=processor.process_model_display_name,
-            updated_at_in_seconds=processor.process_instance_model.updated_at_in_seconds,
-        )
-
-        next_task_trying_again = next_task
-        if not next_task:  # The Next Task can be requested to be a certain task, useful for parallel tasks.
-            # This may or may not work, sometimes there is no next task to complete.
-            next_task_trying_again = processor.next_task()
-
-        if next_task_trying_again is not None:
-            process_instance_api.next_task = ProcessInstanceService.spiff_task_to_api_task(
-                processor, next_task_trying_again, add_docs_and_forms=True
+            id=process_instance.id,
+            status=process_instance.status,
+            process_model_identifier=process_instance.process_model_identifier,
+            process_model_display_name=process_instance.process_model_display_name,
+            updated_at_in_seconds=process_instance.updated_at_in_seconds,
         )
 
         return process_instance_api

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

@@ -1318,8 +1318,6 @@ class TestProcessApi(BaseTest):
         assert response.json["updated_at_in_seconds"] > 0
         assert response.json["status"] == "complete"
         assert response.json["process_model_identifier"] == process_model.id
-        assert response.json["data"]["Mike"] == "Awesome"
-        assert response.json["data"]["person"] == "Kevin"
 
     def test_process_instance_show(
         self,

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

@@ -46,10 +46,9 @@ class TestTasksController(BaseTest):
             f"/v1.0/process-instances/{self.modify_process_identifier_for_path_param(process_model.id)}/{process_instance_id}/run",
             headers=self.logged_in_headers(with_super_admin_user),
         )
+        assert response.status_code == 200
         # Call this to assure all engine-steps are fully processed.
         _dequeued_interstitial_stream(process_instance_id)
-        assert response.json is not None
-        assert response.json["next_task"] is not None
 
         human_tasks = (
             db.session.query(HumanTaskModel).filter(HumanTaskModel.process_instance_id == process_instance_id).all()
@@ -214,11 +213,11 @@ class TestTasksController(BaseTest):
             f"/v1.0/process-instances/{self.modify_process_identifier_for_path_param(process_model.id)}/{process_instance_id}/run",
             headers=headers,
         )
+        assert response.status_code == 200
 
-        assert response.json is not None
-        assert response.json["next_task"] is not None
-        assert response.json["next_task"]["state"] == "READY"
-        assert response.json["next_task"]["title"] == "Script Task #2"
+        task_model = TaskModel.query.filter_by(process_instance_id=process_instance_id, state="READY").first()
+        assert task_model is not None
+        assert task_model.task_definition.bpmn_name == "Script Task #2"
 
         # Rather that call the API and deal with the Server Side Events, call the loop directly and covert it to
         # a list.  It tests all of our code.  No reason to test Flasks SSE support.
@@ -481,10 +480,10 @@ class TestTasksController(BaseTest):
             headers=self.logged_in_headers(with_super_admin_user),
         )
         assert response.status_code == 200
-        assert response.json is not None
-        assert "next_task" in response.json
-        task_guid = response.json["next_task"]["id"]
-        assert task_guid is not None
+
+        task_model = TaskModel.query.filter_by(process_instance_id=process_instance_id, state="READY").first()
+        assert task_model is not None
+        task_guid = task_model.guid
 
         # log in a guest user to complete the tasks
         redirect_url = "/test-redirect-dne"