add single step run

api/controllers/console/__init__.py

@@ -8,7 +8,7 @@ api = ExternalApi(bp)
 from . import admin, apikey, extension, feature, setup, version, ping
 # Import app controllers
 from .app import (advanced_prompt_template, annotation, app, audio, completion, conversation, generator, message,
-                  model_config, site, statistic, workflow, workflow_app_log)
+                  model_config, site, statistic, workflow, workflow_run, workflow_app_log)
 # Import auth controllers
 from .auth import activate, data_source_oauth, login, oauth
 # Import billing controllers

api/controllers/console/app/workflow.py

@@ -15,6 +15,7 @@ from controllers.console.setup import setup_required
 from controllers.console.wraps import account_initialization_required
 from core.app.entities.app_invoke_entities import InvokeFrom
 from fields.workflow_fields import workflow_fields
+from fields.workflow_run_fields import workflow_run_node_execution_fields
 from libs.helper import TimestampField, uuid_value
 from libs.login import current_user, login_required
 from models.model import App, AppMode
@@ -164,18 +165,24 @@ class DraftWorkflowNodeRunApi(Resource):
     @login_required
     @account_initialization_required
     @get_app_model(mode=[AppMode.ADVANCED_CHAT, AppMode.WORKFLOW])
+    @marshal_with(workflow_run_node_execution_fields)
     def post(self, app_model: App, node_id: str):
         """
         Run draft workflow node
         """
-        # TODO
+        parser = reqparse.RequestParser()
+        parser.add_argument('inputs', type=dict, required=True, nullable=False, location='json')
+        args = parser.parse_args()
+
         workflow_service = WorkflowService()
-        workflow_service.run_draft_workflow_node(app_model=app_model, node_id=node_id, account=current_user)
+        workflow_node_execution = workflow_service.run_draft_workflow_node(
+            app_model=app_model,
+            node_id=node_id,
+            user_inputs=args.get('inputs'),
+            account=current_user
+        )
 
-        # TODO
-        return {
-            "result": "success"
-        }
+        return workflow_node_execution
 
 
 class PublishedWorkflowApi(Resource):
@@ -291,7 +298,7 @@ api.add_resource(DraftWorkflowApi, '/apps/<uuid:app_id>/workflows/draft')
 api.add_resource(AdvancedChatDraftWorkflowRunApi, '/apps/<uuid:app_id>/advanced-chat/workflows/draft/run')
 api.add_resource(DraftWorkflowRunApi, '/apps/<uuid:app_id>/workflows/draft/run')
 api.add_resource(WorkflowTaskStopApi, '/apps/<uuid:app_id>/workflows/tasks/<string:task_id>/stop')
-api.add_resource(DraftWorkflowNodeRunApi, '/apps/<uuid:app_id>/workflows/draft/nodes/<uuid:node_id>/run')
+api.add_resource(DraftWorkflowNodeRunApi, '/apps/<uuid:app_id>/workflows/draft/nodes/<string:node_id>/run')
 api.add_resource(PublishedWorkflowApi, '/apps/<uuid:app_id>/workflows/published')
 api.add_resource(DefaultBlockConfigsApi, '/apps/<uuid:app_id>/workflows/default-workflow-block-configs')
 api.add_resource(DefaultBlockConfigApi, '/apps/<uuid:app_id>/workflows/default-workflow-block-configs'

api/core/workflow/errors.py

+from core.workflow.entities.node_entities import NodeType
+
+
+class WorkflowNodeRunFailedError(Exception):
+    def __init__(self, node_id: str, node_type: NodeType, node_title: str, error: str):
+        self.node_id = node_id
+        self.node_type = node_type
+        self.node_title = node_title
+        self.error = error
+        super().__init__(f"Node {node_title} run failed: {error}")

api/core/workflow/nodes/base_node.py

@@ -108,7 +108,7 @@ class BaseNode(ABC):
                 )
 
     @classmethod
-    def extract_variable_selector_to_variable_mapping(cls, config: dict) -> dict:
+    def extract_variable_selector_to_variable_mapping(cls, config: dict) -> dict[str, list[str]]:
         """
         Extract variable selector to variable mapping
         :param config: node config
@@ -119,7 +119,7 @@ class BaseNode(ABC):
 
     @classmethod
     @abstractmethod
-    def _extract_variable_selector_to_variable_mapping(cls, node_data: BaseNodeData) -> dict[list[str], str]:
+    def _extract_variable_selector_to_variable_mapping(cls, node_data: BaseNodeData) -> dict[str, list[str]]:
         """
         Extract variable selector to variable mapping
         :param node_data: node data

api/core/workflow/nodes/code/code_node.py

@@ -289,7 +289,7 @@ class CodeNode(BaseNode):
         return transformed_result
 
     @classmethod
-    def _extract_variable_selector_to_variable_mapping(cls, node_data: CodeNodeData) -> dict[list[str], str]:
+    def _extract_variable_selector_to_variable_mapping(cls, node_data: CodeNodeData) -> dict[str, list[str]]:
         """
         Extract variable selector to variable mapping
         :param node_data: node data
@@ -297,5 +297,5 @@ class CodeNode(BaseNode):
         """
 
         return {
-            variable_selector.value_selector: variable_selector.variable for variable_selector in node_data.variables
-        }
+            variable_selector.variable: variable_selector.value_selector for variable_selector in node_data.variables
+        }
\ No newline at end of file

api/core/workflow/nodes/direct_answer/direct_answer_node.py

@@ -50,10 +50,16 @@ class DirectAnswerNode(BaseNode):
         )
 
     @classmethod
-    def _extract_variable_selector_to_variable_mapping(cls, node_data: BaseNodeData) -> dict[list[str], str]:
+    def _extract_variable_selector_to_variable_mapping(cls, node_data: BaseNodeData) -> dict[str, list[str]]:
         """
         Extract variable selector to variable mapping
         :param node_data: node data
         :return:
         """
-        return {}
+        node_data = cast(cls._node_data_cls, node_data)
+
+        variable_mapping = {}
+        for variable_selector in node_data.variables:
+            variable_mapping[variable_selector.variable] = variable_selector.value_selector
+
+        return variable_mapping

api/core/workflow/nodes/end/end_node.py

@@ -56,7 +56,7 @@ class EndNode(BaseNode):
         )
 
     @classmethod
-    def _extract_variable_selector_to_variable_mapping(cls, node_data: BaseNodeData) -> dict[list[str], str]:
+    def _extract_variable_selector_to_variable_mapping(cls, node_data: BaseNodeData) -> dict[str, list[str]]:
         """
         Extract variable selector to variable mapping
         :param node_data: node data

api/core/workflow/nodes/http_request/http_request_node.py

@@ -48,12 +48,12 @@ class HttpRequestNode(BaseNode):
 
 
     @classmethod
-    def _extract_variable_selector_to_variable_mapping(cls, node_data: HttpRequestNodeData) -> dict[list[str], str]:
+    def _extract_variable_selector_to_variable_mapping(cls, node_data: HttpRequestNodeData) -> dict[str, list[str]]:
         """
         Extract variable selector to variable mapping
         :param node_data: node data
         :return:
         """
         return {
-            variable_selector.value_selector: variable_selector.variable for variable_selector in node_data.variables
-        }
+            variable_selector.variable: variable_selector.value_selector for variable_selector in node_data.variables
+        }
\ No newline at end of file

api/core/workflow/nodes/llm/llm_node.py

@@ -23,7 +23,7 @@ class LLMNode(BaseNode):
         pass
 
     @classmethod
-    def _extract_variable_selector_to_variable_mapping(cls, node_data: BaseNodeData) -> dict[list[str], str]:
+    def _extract_variable_selector_to_variable_mapping(cls, node_data: BaseNodeData) -> dict[str, list[str]]:
         """
         Extract variable selector to variable mapping
         :param node_data: node data

api/core/workflow/nodes/start/start_node.py

@@ -69,7 +69,7 @@ class StartNode(BaseNode):
         return filtered_inputs
 
     @classmethod
-    def _extract_variable_selector_to_variable_mapping(cls, node_data: BaseNodeData) -> dict[list[str], str]:
+    def _extract_variable_selector_to_variable_mapping(cls, node_data: BaseNodeData) -> dict[str, list[str]]:
         """
         Extract variable selector to variable mapping
         :param node_data: node data

api/core/workflow/nodes/template_transform/template_transform_node.py

@@ -72,12 +72,12 @@ class TemplateTransformNode(BaseNode):
         )
     
     @classmethod
-    def _extract_variable_selector_to_variable_mapping(cls, node_data: TemplateTransformNodeData) -> dict[list[str], str]:
+    def _extract_variable_selector_to_variable_mapping(cls, node_data: TemplateTransformNodeData) -> dict[str, list[str]]:
         """
         Extract variable selector to variable mapping
         :param node_data: node data
         :return:
         """
         return {
-            variable_selector.value_selector: variable_selector.variable for variable_selector in node_data.variables
+            variable_selector.variable: variable_selector.value_selector for variable_selector in node_data.variables
         }
\ No newline at end of file

api/core/workflow/nodes/tool/tool_node.py

@@ -133,12 +133,12 @@ class ToolNode(BaseNode):
 
 
     @classmethod
-    def _extract_variable_selector_to_variable_mapping(cls, node_data: BaseNodeData) -> dict[list[str], str]:
+    def _extract_variable_selector_to_variable_mapping(cls, node_data: BaseNodeData) -> dict[str, list[str]]:
         """
         Extract variable selector to variable mapping
         """
         return {
-            k.value_selector: k.variable
+            k.variable: k.value_selector
             for k in cast(ToolNodeData, node_data).tool_parameters
             if k.variable_type == 'selector'
-        }
+        }
\ No newline at end of file

api/core/workflow/workflow_engine_manager.py

@@ -6,6 +6,7 @@ from core.workflow.callbacks.base_workflow_callback import BaseWorkflowCallback
 from core.workflow.entities.node_entities import NodeRunMetadataKey, NodeRunResult, NodeType
 from core.workflow.entities.variable_pool import VariablePool, VariableValue
 from core.workflow.entities.workflow_entities import WorkflowNodeAndResult, WorkflowRunState
+from core.workflow.errors import WorkflowNodeRunFailedError
 from core.workflow.nodes.base_node import BaseNode, UserFrom
 from core.workflow.nodes.code.code_node import CodeNode
 from core.workflow.nodes.direct_answer.direct_answer_node import DirectAnswerNode
@@ -180,6 +181,93 @@ class WorkflowEngineManager:
             callbacks=callbacks
         )
 
+    def single_step_run_workflow_node(self, workflow: Workflow,
+                                      node_id: str,
+                                      user_id: str,
+                                      user_inputs: dict) -> tuple[BaseNode, NodeRunResult]:
+        """
+        Single step run workflow node
+        :param workflow: Workflow instance
+        :param node_id: node id
+        :param user_id: user id
+        :param user_inputs: user inputs
+        :return:
+        """
+        # fetch node info from workflow graph
+        graph = workflow.graph_dict
+        if not graph:
+            raise ValueError('workflow graph not found')
+
+        nodes = graph.get('nodes')
+        if not nodes:
+            raise ValueError('nodes not found in workflow graph')
+
+        # fetch node config from node id
+        node_config = None
+        for node in nodes:
+            if node.get('id') == node_id:
+                node_config = node
+                break
+
+        if not node_config:
+            raise ValueError('node id not found in workflow graph')
+
+        # Get node class
+        node_cls = node_classes.get(NodeType.value_of(node_config.get('data', {}).get('type')))
+
+        # init workflow run state
+        node_instance = node_cls(
+            tenant_id=workflow.tenant_id,
+            app_id=workflow.app_id,
+            workflow_id=workflow.id,
+            user_id=user_id,
+            user_from=UserFrom.ACCOUNT,
+            config=node_config
+        )
+
+        try:
+            # init variable pool
+            variable_pool = VariablePool(
+                system_variables={},
+                user_inputs={}
+            )
+
+            # variable selector to variable mapping
+            try:
+                variable_mapping = node_cls.extract_variable_selector_to_variable_mapping(node_config)
+            except NotImplementedError:
+                variable_mapping = {}
+
+            for variable_key, variable_selector in variable_mapping.items():
+                if variable_key not in user_inputs:
+                    raise ValueError(f'Variable key {variable_key} not found in user inputs.')
+
+                # fetch variable node id from variable selector
+                variable_node_id = variable_selector[0]
+                variable_key_list = variable_selector[1:]
+
+                # append variable and value to variable pool
+                variable_pool.append_variable(
+                    node_id=variable_node_id,
+                    variable_key_list=variable_key_list,
+                    value=user_inputs.get(variable_key)
+                )
+
+            # run node
+            node_run_result = node_instance.run(
+                variable_pool=variable_pool
+            )
+        except Exception as e:
+            raise WorkflowNodeRunFailedError(
+                node_id=node_instance.node_id,
+                node_type=node_instance.node_type,
+                node_title=node_instance.node_data.title,
+                error=str(e)
+            )
+
+        return node_instance, node_run_result
+
+
     def _workflow_run_success(self, callbacks: list[BaseWorkflowCallback] = None) -> None:
         """
         Workflow run success

api/fields/workflow_run_fields.py

@@ -34,11 +34,9 @@ workflow_run_for_list_fields = {
 }
 
 workflow_run_pagination_fields = {
-    'page': fields.Integer,
-    'limit': fields.Integer(attribute='per_page'),
-    'total': fields.Integer,
-    'has_more': fields.Boolean(attribute='has_next'),
-    'data': fields.List(fields.Nested(workflow_run_for_list_fields), attribute='items')
+    'limit': fields.Integer(attribute='limit'),
+    'has_more': fields.Boolean(attribute='has_more'),
+    'data': fields.List(fields.Nested(workflow_run_for_list_fields), attribute='data')
 }
 
 workflow_run_detail_fields = {

api/services/workflow_run_service.py

@@ -34,26 +34,26 @@ class WorkflowRunService:
             if not last_workflow_run:
                 raise ValueError('Last workflow run not exists')
 
-            conversations = base_query.filter(
+            workflow_runs = base_query.filter(
                 WorkflowRun.created_at < last_workflow_run.created_at,
                 WorkflowRun.id != last_workflow_run.id
             ).order_by(WorkflowRun.created_at.desc()).limit(limit).all()
         else:
-            conversations = base_query.order_by(WorkflowRun.created_at.desc()).limit(limit).all()
+            workflow_runs = base_query.order_by(WorkflowRun.created_at.desc()).limit(limit).all()
 
         has_more = False
-        if len(conversations) == limit:
-            current_page_first_conversation = conversations[-1]
+        if len(workflow_runs) == limit:
+            current_page_first_workflow_run = workflow_runs[-1]
             rest_count = base_query.filter(
-                WorkflowRun.created_at < current_page_first_conversation.created_at,
-                WorkflowRun.id != current_page_first_conversation.id
+                WorkflowRun.created_at < current_page_first_workflow_run.created_at,
+                WorkflowRun.id != current_page_first_workflow_run.id
             ).count()
 
             if rest_count > 0:
                 has_more = True
 
         return InfiniteScrollPagination(
-            data=conversations,
+            data=workflow_runs,
             limit=limit,
             has_more=has_more
         )

api/services/workflow_service.py

 import json
+import time
 from collections.abc import Generator
 from datetime import datetime
 from typing import Optional, Union
@@ -9,12 +10,21 @@ from core.app.apps.base_app_queue_manager import AppQueueManager
 from core.app.apps.workflow.app_config_manager import WorkflowAppConfigManager
 from core.app.apps.workflow.app_generator import WorkflowAppGenerator
 from core.app.entities.app_invoke_entities import InvokeFrom
+from core.model_runtime.utils.encoders import jsonable_encoder
 from core.workflow.entities.node_entities import NodeType
+from core.workflow.errors import WorkflowNodeRunFailedError
 from core.workflow.workflow_engine_manager import WorkflowEngineManager
 from extensions.ext_database import db
 from models.account import Account
 from models.model import App, AppMode, EndUser
-from models.workflow import Workflow, WorkflowType
+from models.workflow import (
+    CreatedByRole,
+    Workflow,
+    WorkflowNodeExecution,
+    WorkflowNodeExecutionStatus,
+    WorkflowNodeExecutionTriggeredFrom,
+    WorkflowType,
+)
 from services.workflow.workflow_converter import WorkflowConverter
 
 
@@ -214,6 +224,80 @@ class WorkflowService:
         """
         AppQueueManager.set_stop_flag(task_id, invoke_from, user.id)
 
+    def run_draft_workflow_node(self, app_model: App,
+                                node_id: str,
+                                user_inputs: dict,
+                                account: Account) -> WorkflowNodeExecution:
+        """
+        Run draft workflow node
+        """
+        # fetch draft workflow by app_model
+        draft_workflow = self.get_draft_workflow(app_model=app_model)
+        if not draft_workflow:
+            raise ValueError('Workflow not initialized')
+
+        # run draft workflow node
+        workflow_engine_manager = WorkflowEngineManager()
+        start_at = time.perf_counter()
+
+        try:
+            node_instance, node_run_result = workflow_engine_manager.single_step_run_workflow_node(
+                workflow=draft_workflow,
+                node_id=node_id,
+                user_inputs=user_inputs,
+                user_id=account.id,
+            )
+        except WorkflowNodeRunFailedError as e:
+            workflow_node_execution = WorkflowNodeExecution(
+                tenant_id=app_model.tenant_id,
+                app_id=app_model.id,
+                workflow_id=draft_workflow.id,
+                triggered_from=WorkflowNodeExecutionTriggeredFrom.SINGLE_STEP.value,
+                index=1,
+                node_id=e.node_id,
+                node_type=e.node_type.value,
+                title=e.node_title,
+                status=WorkflowNodeExecutionStatus.FAILED.value,
+                error=e.error,
+                elapsed_time=time.perf_counter() - start_at,
+                created_by_role=CreatedByRole.ACCOUNT.value,
+                created_by=account.id,
+                created_at=datetime.utcnow(),
+                finished_at=datetime.utcnow()
+            )
+            db.session.add(workflow_node_execution)
+            db.session.commit()
+
+            return workflow_node_execution
+
+        # create workflow node execution
+        workflow_node_execution = WorkflowNodeExecution(
+            tenant_id=app_model.tenant_id,
+            app_id=app_model.id,
+            workflow_id=draft_workflow.id,
+            triggered_from=WorkflowNodeExecutionTriggeredFrom.SINGLE_STEP.value,
+            index=1,
+            node_id=node_id,
+            node_type=node_instance.node_type.value,
+            title=node_instance.node_data.title,
+            inputs=json.dumps(node_run_result.inputs) if node_run_result.inputs else None,
+            process_data=json.dumps(node_run_result.process_data) if node_run_result.process_data else None,
+            outputs=json.dumps(node_run_result.outputs) if node_run_result.outputs else None,
+            execution_metadata=(json.dumps(jsonable_encoder(node_run_result.metadata))
+                                if node_run_result.metadata else None),
+            status=WorkflowNodeExecutionStatus.SUCCEEDED.value,
+            elapsed_time=time.perf_counter() - start_at,
+            created_by_role=CreatedByRole.ACCOUNT.value,
+            created_by=account.id,
+            created_at=datetime.utcnow(),
+            finished_at=datetime.utcnow()
+        )
+
+        db.session.add(workflow_node_execution)
+        db.session.commit()
+
+        return workflow_node_execution
+
     def convert_to_workflow(self, app_model: App, account: Account) -> App:
         """
         Basic mode of chatbot app(expert mode) to workflow