completed workflow engine main logic

api/core/app/apps/advanced_chat/app_runner.py

@@ -83,7 +83,6 @@ class AdvancedChatAppRunner(AppRunner):
         # RUN WORKFLOW
         workflow_engine_manager = WorkflowEngineManager()
         workflow_engine_manager.run_workflow(
-            app_model=app_record,
             workflow=workflow,
             triggered_from=WorkflowRunTriggeredFrom.DEBUGGING
             if application_generate_entity.invoke_from == InvokeFrom.DEBUGGER else WorkflowRunTriggeredFrom.APP_RUN,
@@ -94,7 +93,7 @@ class AdvancedChatAppRunner(AppRunner):
                 SystemVariable.FILES: files,
                 SystemVariable.CONVERSATION: conversation.id,
             },
-            callbacks=[WorkflowEventTriggerCallback(queue_manager=queue_manager)]
+            callbacks=[WorkflowEventTriggerCallback(queue_manager=queue_manager)],
         )
 
     def handle_input_moderation(self, queue_manager: AppQueueManager,

api/core/app/apps/advanced_chat/generate_task_pipeline.py

@@ -253,8 +253,6 @@ class AdvancedChatAppGenerateTaskPipeline:
                             'error': workflow_run.error,
                             'elapsed_time': workflow_run.elapsed_time,
                             'total_tokens': workflow_run.total_tokens,
-                            'total_price': workflow_run.total_price,
-                            'currency': workflow_run.currency,
                             'total_steps': workflow_run.total_steps,
                             'created_at': int(workflow_run.created_at.timestamp()),
                             'finished_at': int(workflow_run.finished_at.timestamp())

api/core/callback_handler/workflow_event_trigger_callback.py

 from core.app.app_queue_manager import AppQueueManager, PublishFrom
-from core.workflow.callbacks.base_callback import BaseWorkflowCallback
+from core.workflow.callbacks.base_workflow_callback import BaseWorkflowCallback
 from models.workflow import WorkflowNodeExecution, WorkflowRun
 
 
@@ -43,3 +43,12 @@ class WorkflowEventTriggerCallback(BaseWorkflowCallback):
             workflow_node_execution_id=workflow_node_execution.id,
             pub_from=PublishFrom.TASK_PIPELINE
         )
+
+    def on_text_chunk(self, text: str) -> None:
+        """
+        Publish text chunk
+        """
+        self._queue_manager.publish_text_chunk(
+            text=text,
+            pub_from=PublishFrom.TASK_PIPELINE
+        )

api/core/workflow/callbacks/base_callback.py → api/core/workflow/callbacks/base_workflow_callback.py

@@ -31,3 +31,11 @@ class BaseWorkflowCallback:
         Workflow node execute finished
         """
         raise NotImplementedError
+
+    @abstractmethod
+    def on_text_chunk(self, text: str) -> None:
+        """
+        Publish text chunk
+        """
+        raise NotImplementedError
+

api/core/workflow/entities/node_entities.py

 from enum import Enum
+from typing import Optional
+
+from pydantic import BaseModel
+
+from models.workflow import WorkflowNodeExecutionStatus
 
 
 class NodeType(Enum):
@@ -39,3 +44,19 @@ class SystemVariable(Enum):
     QUERY = 'query'
     FILES = 'files'
     CONVERSATION = 'conversation'
+
+
+class NodeRunResult(BaseModel):
+    """
+    Node Run Result.
+    """
+    status: WorkflowNodeExecutionStatus = WorkflowNodeExecutionStatus.RUNNING
+
+    inputs: Optional[dict] = None  # node inputs
+    process_data: Optional[dict] = None  # process data
+    outputs: Optional[dict] = None  # node outputs
+    metadata: Optional[dict] = None  # node metadata
+
+    edge_source_handle: Optional[str] = None  # source handle id of node with multiple branches
+
+    error: Optional[str] = None  # error message if status is failed

api/core/workflow/entities/workflow_entities.py

-from decimal import Decimal
-
 from core.workflow.entities.variable_pool import VariablePool
 from models.workflow import WorkflowNodeExecution, WorkflowRun
 
@@ -10,7 +8,10 @@ class WorkflowRunState:
     variable_pool: VariablePool
 
     total_tokens: int = 0
-    total_price: Decimal = Decimal(0)
-    currency: str = "USD"
 
     workflow_node_executions: list[WorkflowNodeExecution] = []
+
+    def __init__(self, workflow_run: WorkflowRun, start_at: float, variable_pool: VariablePool) -> None:
+        self.workflow_run = workflow_run
+        self.start_at = start_at
+        self.variable_pool = variable_pool

api/core/workflow/nodes/base_node.py

 from abc import abstractmethod
 from typing import Optional
 
-from core.workflow.callbacks.base_callback import BaseWorkflowCallback
+from core.workflow.callbacks.base_workflow_callback import BaseWorkflowCallback
 from core.workflow.entities.base_node_data_entities import BaseNodeData
-from core.workflow.entities.node_entities import NodeType
+from core.workflow.entities.node_entities import NodeRunResult, NodeType
 from core.workflow.entities.variable_pool import VariablePool
+from models.workflow import WorkflowNodeExecutionStatus
 
 
 class BaseNode:
@@ -13,17 +14,23 @@ class BaseNode:
 
     node_id: str
     node_data: BaseNodeData
+    node_run_result: Optional[NodeRunResult] = None
 
-    def __init__(self, config: dict) -> None:
+    stream_output_supported: bool = False
+    callbacks: list[BaseWorkflowCallback]
+
+    def __init__(self, config: dict,
+                 callbacks: list[BaseWorkflowCallback] = None) -> None:
         self.node_id = config.get("id")
         if not self.node_id:
             raise ValueError("Node ID is required.")
 
         self.node_data = self._node_data_cls(**config.get("data", {}))
+        self.callbacks = callbacks or []
 
     @abstractmethod
     def _run(self, variable_pool: Optional[VariablePool] = None,
-             run_args: Optional[dict] = None) -> dict:
+             run_args: Optional[dict] = None) -> NodeRunResult:
         """
         Run node
         :param variable_pool: variable pool
@@ -33,22 +40,41 @@ class BaseNode:
         raise NotImplementedError
 
     def run(self, variable_pool: Optional[VariablePool] = None,
-            run_args: Optional[dict] = None,
-            callbacks: list[BaseWorkflowCallback] = None) -> dict:
+            run_args: Optional[dict] = None) -> NodeRunResult:
         """
         Run node entry
         :param variable_pool: variable pool
         :param run_args: run args
-        :param callbacks: callbacks
         :return:
         """
         if variable_pool is None and run_args is None:
             raise ValueError("At least one of `variable_pool` or `run_args` must be provided.")
 
-        return self._run(
-            variable_pool=variable_pool,
-            run_args=run_args
-        )
+        try:
+            result = self._run(
+                variable_pool=variable_pool,
+                run_args=run_args
+            )
+        except Exception as e:
+            # process unhandled exception
+            result = NodeRunResult(
+                status=WorkflowNodeExecutionStatus.FAILED,
+                error=str(e)
+            )
+
+        self.node_run_result = result
+        return result
+
+    def publish_text_chunk(self, text: str) -> None:
+        """
+        Publish text chunk
+        :param text: chunk text
+        :return:
+        """
+        if self.stream_output_supported:
+            if self.callbacks:
+                for callback in self.callbacks:
+                    callback.on_text_chunk(text)
 
     @classmethod
     def get_default_config(cls, filters: Optional[dict] = None) -> dict:

api/core/workflow/workflow_engine_manager.py

 import json
 import time
+from datetime import datetime
 from typing import Optional, Union
 
-from core.workflow.callbacks.base_callback import BaseWorkflowCallback
-from core.workflow.entities.node_entities import NodeType
-from core.workflow.entities.variable_pool import VariablePool
+from core.workflow.callbacks.base_workflow_callback import BaseWorkflowCallback
+from core.workflow.entities.node_entities import NodeRunResult, NodeType
+from core.workflow.entities.variable_pool import VariablePool, VariableValue
 from core.workflow.entities.workflow_entities import WorkflowRunState
 from core.workflow.nodes.base_node import BaseNode
 from core.workflow.nodes.code.code_node import CodeNode
@@ -31,6 +32,7 @@ from models.workflow import (
     WorkflowRun,
     WorkflowRunStatus,
     WorkflowRunTriggeredFrom,
+    WorkflowType,
 )
 
 node_classes = {
@@ -120,8 +122,7 @@ class WorkflowEngineManager:
 
         return default_config
 
-    def run_workflow(self, app_model: App,
-                     workflow: Workflow,
+    def run_workflow(self, workflow: Workflow,
                      triggered_from: WorkflowRunTriggeredFrom,
                      user: Union[Account, EndUser],
                      user_inputs: dict,
@@ -129,7 +130,6 @@ class WorkflowEngineManager:
                      callbacks: list[BaseWorkflowCallback] = None) -> None:
         """
         Run workflow
-        :param app_model: App instance
         :param workflow: Workflow instance
         :param triggered_from: triggered from
         :param user: account or end user
@@ -143,13 +143,23 @@ class WorkflowEngineManager:
         if not graph:
             raise ValueError('workflow graph not found')
 
+        if 'nodes' not in graph or 'edges' not in graph:
+            raise ValueError('nodes or edges not found in workflow graph')
+
+        if isinstance(graph.get('nodes'), list):
+            raise ValueError('nodes in workflow graph must be a list')
+
+        if isinstance(graph.get('edges'), list):
+            raise ValueError('edges in workflow graph must be a list')
+
         # init workflow run
         workflow_run = self._init_workflow_run(
             workflow=workflow,
             triggered_from=triggered_from,
             user=user,
             user_inputs=user_inputs,
-            system_inputs=system_inputs
+            system_inputs=system_inputs,
+            callbacks=callbacks
         )
 
         # init workflow run state
@@ -161,44 +171,54 @@ class WorkflowEngineManager:
             )
         )
 
-        if callbacks:
-            for callback in callbacks:
-                callback.on_workflow_run_started(workflow_run)
-
-        # fetch start node
-        start_node = self._get_entry_node(graph)
-        if not start_node:
-            self._workflow_run_failed(
-                workflow_run_state=workflow_run_state,
-                error='Start node not found in workflow graph',
-                callbacks=callbacks
-            )
-            return
+        # fetch predecessor node ids before end node (include: llm, direct answer)
+        streamable_node_ids = self._fetch_streamable_node_ids(workflow, graph)
 
         try:
             predecessor_node = None
-            current_node = start_node
             while True:
-                # run workflow
-                self._run_workflow_node(
-                    workflow_run_state=workflow_run_state,
-                    node=current_node,
+                # get next node, multiple target nodes in the future
+                next_node = self._get_next_node(
+                    graph=graph,
                     predecessor_node=predecessor_node,
                     callbacks=callbacks
                 )
 
-                if current_node.node_type == NodeType.END:
+                if not next_node:
                     break
 
-                # todo fetch next node until end node finished or no next node
-                current_node = None
+                # check if node is streamable
+                if next_node.node_id in streamable_node_ids:
+                    next_node.stream_output_supported = True
 
-                if not current_node:
-                    break
+                # max steps 30 reached
+                if len(workflow_run_state.workflow_node_executions) > 30:
+                    raise ValueError('Max steps 30 reached.')
 
-                predecessor_node = current_node
-                # or max steps 30 reached
                 # or max execution time 10min reached
+                if self._is_timed_out(start_at=workflow_run_state.start_at, max_execution_time=600):
+                    raise ValueError('Max execution time 10min reached.')
+
+                # run workflow, run multiple target nodes in the future
+                self._run_workflow_node(
+                    workflow_run_state=workflow_run_state,
+                    node=next_node,
+                    predecessor_node=predecessor_node,
+                    callbacks=callbacks
+                )
+
+                if next_node.node_type == NodeType.END:
+                    break
+
+                predecessor_node = next_node
+
+            if not predecessor_node and not next_node:
+                self._workflow_run_failed(
+                    workflow_run_state=workflow_run_state,
+                    error='Start node not found in workflow graph.',
+                    callbacks=callbacks
+                )
+                return
         except Exception as e:
             self._workflow_run_failed(
                 workflow_run_state=workflow_run_state,
@@ -213,11 +233,40 @@ class WorkflowEngineManager:
             callbacks=callbacks
         )
 
+    def _fetch_streamable_node_ids(self, workflow: Workflow, graph: dict) -> list[str]:
+        """
+        Fetch streamable node ids
+        When the Workflow type is chat, only the nodes before END Node are LLM or Direct Answer can be streamed output
+        When the Workflow type is workflow, only the nodes before END Node (only Plain Text mode) are LLM can be streamed output
+
+        :param workflow: Workflow instance
+        :param graph: workflow graph
+        :return:
+        """
+        workflow_type = WorkflowType.value_of(workflow.type)
+
+        streamable_node_ids = []
+        end_node_ids = []
+        for node_config in graph.get('nodes'):
+            if node_config.get('type') == NodeType.END.value:
+                if workflow_type == WorkflowType.WORKFLOW:
+                    if node_config.get('data', {}).get('outputs', {}).get('type', '') == 'plain-text':
+                        end_node_ids.append(node_config.get('id'))
+                else:
+                    end_node_ids.append(node_config.get('id'))
+
+        for edge_config in graph.get('edges'):
+            if edge_config.get('target') in end_node_ids:
+                streamable_node_ids.append(edge_config.get('source'))
+
+        return streamable_node_ids
+
     def _init_workflow_run(self, workflow: Workflow,
                            triggered_from: WorkflowRunTriggeredFrom,
                            user: Union[Account, EndUser],
                            user_inputs: dict,
-                           system_inputs: Optional[dict] = None) -> WorkflowRun:
+                           system_inputs: Optional[dict] = None,
+                           callbacks: list[BaseWorkflowCallback] = None) -> WorkflowRun:
         """
         Init workflow run
         :param workflow: Workflow instance
@@ -225,6 +274,7 @@ class WorkflowEngineManager:
         :param user: account or end user
         :param user_inputs: user variables inputs
         :param system_inputs: system inputs, like: query, files
+        :param callbacks: workflow callbacks
         :return:
         """
         try:
@@ -260,6 +310,39 @@ class WorkflowEngineManager:
             db.session.rollback()
             raise
 
+        if callbacks:
+            for callback in callbacks:
+                callback.on_workflow_run_started(workflow_run)
+
+        return workflow_run
+
+    def _workflow_run_success(self, workflow_run_state: WorkflowRunState,
+                              callbacks: list[BaseWorkflowCallback] = None) -> WorkflowRun:
+        """
+        Workflow run success
+        :param workflow_run_state: workflow run state
+        :param callbacks: workflow callbacks
+        :return:
+        """
+        workflow_run = workflow_run_state.workflow_run
+        workflow_run.status = WorkflowRunStatus.SUCCEEDED.value
+
+        # fetch last workflow_node_executions
+        last_workflow_node_execution = workflow_run_state.workflow_node_executions[-1]
+        if last_workflow_node_execution:
+            workflow_run.outputs = json.dumps(last_workflow_node_execution.node_run_result.outputs)
+
+        workflow_run.elapsed_time = time.perf_counter() - workflow_run_state.start_at
+        workflow_run.total_tokens = workflow_run_state.total_tokens
+        workflow_run.total_steps = len(workflow_run_state.workflow_node_executions)
+        workflow_run.finished_at = datetime.utcnow()
+
+        db.session.commit()
+
+        if callbacks:
+            for callback in callbacks:
+                callback.on_workflow_run_finished(workflow_run)
+
         return workflow_run
 
     def _workflow_run_failed(self, workflow_run_state: WorkflowRunState,
@@ -277,9 +360,8 @@ class WorkflowEngineManager:
         workflow_run.error = error
         workflow_run.elapsed_time = time.perf_counter() - workflow_run_state.start_at
         workflow_run.total_tokens = workflow_run_state.total_tokens
-        workflow_run.total_price = workflow_run_state.total_price
-        workflow_run.currency = workflow_run_state.currency
         workflow_run.total_steps = len(workflow_run_state.workflow_node_executions)
+        workflow_run.finished_at = datetime.utcnow()
 
         db.session.commit()
 
@@ -289,21 +371,77 @@ class WorkflowEngineManager:
 
         return workflow_run
 
-    def _get_entry_node(self, graph: dict) -> Optional[StartNode]:
+    def _get_next_node(self, graph: dict,
+                       predecessor_node: Optional[BaseNode] = None,
+                       callbacks: list[BaseWorkflowCallback] = None) -> Optional[BaseNode]:
         """
-        Get entry node
+        Get next node
+        multiple target nodes in the future.
         :param graph: workflow graph
+        :param predecessor_node: predecessor node
+        :param callbacks: workflow callbacks
         :return:
         """
         nodes = graph.get('nodes')
         if not nodes:
             return None
 
-        for node_config in nodes.items():
-            if node_config.get('type') == NodeType.START.value:
-                return StartNode(config=node_config)
+        if not predecessor_node:
+            for node_config in nodes:
+                if node_config.get('type') == NodeType.START.value:
+                    return StartNode(config=node_config)
+        else:
+            edges = graph.get('edges')
+            source_node_id = predecessor_node.node_id
+
+            # fetch all outgoing edges from source node
+            outgoing_edges = [edge for edge in edges if edge.get('source') == source_node_id]
+            if not outgoing_edges:
+                return None
+
+            # fetch target node id from outgoing edges
+            outgoing_edge = None
+            source_handle = predecessor_node.node_run_result.edge_source_handle
+            if source_handle:
+                for edge in outgoing_edges:
+                    if edge.get('source_handle') and edge.get('source_handle') == source_handle:
+                        outgoing_edge = edge
+                        break
+            else:
+                outgoing_edge = outgoing_edges[0]
+
+            if not outgoing_edge:
+                return None
+
+            target_node_id = outgoing_edge.get('target')
+
+            # fetch target node from target node id
+            target_node_config = None
+            for node in nodes:
+                if node.get('id') == target_node_id:
+                    target_node_config = node
+                    break
+
+            if not target_node_config:
+                return None
 
-        return None
+            # get next node
+            target_node = node_classes.get(NodeType.value_of(target_node_config.get('type')))
+
+            return target_node(
+                config=target_node_config,
+                callbacks=callbacks
+            )
+
+    def _is_timed_out(self, start_at: float, max_execution_time: int) -> bool:
+        """
+        Check timeout
+        :param start_at: start time
+        :param max_execution_time: max execution time
+        :return:
+        """
+        # TODO check queue is stopped
+        return time.perf_counter() - start_at > max_execution_time
 
     def _run_workflow_node(self, workflow_run_state: WorkflowRunState,
                            node: BaseNode,
@@ -320,28 +458,41 @@ class WorkflowEngineManager:
         # add to workflow node executions
         workflow_run_state.workflow_node_executions.append(workflow_node_execution)
 
-        try:
-            # run node, result must have inputs, process_data, outputs, execution_metadata
-            node_run_result = node.run(
-                variable_pool=workflow_run_state.variable_pool,
-                callbacks=callbacks
-            )
-        except Exception as e:
+        # run node, result must have inputs, process_data, outputs, execution_metadata
+        node_run_result = node.run(
+            variable_pool=workflow_run_state.variable_pool
+        )
+
+        if node_run_result.status == WorkflowNodeExecutionStatus.FAILED:
             # node run failed
             self._workflow_node_execution_failed(
                 workflow_node_execution=workflow_node_execution,
-                error=str(e),
+                start_at=start_at,
+                error=node_run_result.error,
                 callbacks=callbacks
             )
-            raise
+            raise ValueError(f"Node {node.node_data.title} run failed: {node_run_result.error}")
 
         # node run success
         self._workflow_node_execution_success(
             workflow_node_execution=workflow_node_execution,
+            start_at=start_at,
             result=node_run_result,
             callbacks=callbacks
         )
 
+        for variable_key, variable_value in node_run_result.outputs.items():
+            # append variables to variable pool recursively
+            self._append_variables_recursively(
+                variable_pool=workflow_run_state.variable_pool,
+                node_id=node.node_id,
+                variable_key_list=[variable_key],
+                variable_value=variable_value
+            )
+
+        if node_run_result.metadata.get('total_tokens'):
+            workflow_run_state.total_tokens += int(node_run_result.metadata.get('total_tokens'))
+
         return workflow_node_execution
 
     def _init_node_execution_from_workflow_run(self, workflow_run_state: WorkflowRunState,
@@ -384,3 +535,86 @@ class WorkflowEngineManager:
                 callback.on_workflow_node_execute_started(workflow_node_execution)
 
         return workflow_node_execution
+
+    def _workflow_node_execution_success(self, workflow_node_execution: WorkflowNodeExecution,
+                                         start_at: float,
+                                         result: NodeRunResult,
+                                         callbacks: list[BaseWorkflowCallback] = None) -> WorkflowNodeExecution:
+        """
+        Workflow node execution success
+        :param workflow_node_execution: workflow node execution
+        :param start_at: start time
+        :param result: node run result
+        :param callbacks: workflow callbacks
+        :return:
+        """
+        workflow_node_execution.status = WorkflowNodeExecutionStatus.SUCCEEDED.value
+        workflow_node_execution.elapsed_time = time.perf_counter() - start_at
+        workflow_node_execution.inputs = json.dumps(result.inputs)
+        workflow_node_execution.process_data = json.dumps(result.process_data)
+        workflow_node_execution.outputs = json.dumps(result.outputs)
+        workflow_node_execution.execution_metadata = json.dumps(result.metadata)
+        workflow_node_execution.finished_at = datetime.utcnow()
+
+        db.session.commit()
+
+        if callbacks:
+            for callback in callbacks:
+                callback.on_workflow_node_execute_finished(workflow_node_execution)
+
+        return workflow_node_execution
+
+    def _workflow_node_execution_failed(self, workflow_node_execution: WorkflowNodeExecution,
+                                        start_at: float,
+                                        error: str,
+                                        callbacks: list[BaseWorkflowCallback] = None) -> WorkflowNodeExecution:
+        """
+        Workflow node execution failed
+        :param workflow_node_execution: workflow node execution
+        :param start_at: start time
+        :param error: error message
+        :param callbacks: workflow callbacks
+        :return:
+        """
+        workflow_node_execution.status = WorkflowNodeExecutionStatus.FAILED.value
+        workflow_node_execution.error = error
+        workflow_node_execution.elapsed_time = time.perf_counter() - start_at
+        workflow_node_execution.finished_at = datetime.utcnow()
+
+        db.session.commit()
+
+        if callbacks:
+            for callback in callbacks:
+                callback.on_workflow_node_execute_finished(workflow_node_execution)
+
+        return workflow_node_execution
+
+    def _append_variables_recursively(self, variable_pool: VariablePool,
+                                      node_id: str,
+                                      variable_key_list: list[str],
+                                      variable_value: VariableValue):
+        """
+        Append variables recursively
+        :param variable_pool: variable pool
+        :param node_id: node id
+        :param variable_key_list: variable key list
+        :param variable_value: variable value
+        :return:
+        """
+        variable_pool.append_variable(
+            node_id=node_id,
+            variable_key_list=variable_key_list,
+            value=variable_value
+        )
+
+        # if variable_value is a dict, then recursively append variables
+        if isinstance(variable_value, dict):
+            for key, value in variable_value.items():
+                # construct new key list
+                new_key_list = variable_key_list + [key]
+                self._append_variables_recursively(
+                    variable_pool=variable_pool,
+                    node_id=node_id,
+                    variable_key_list=new_key_list,
+                    variable_value=value
+                )

api/fields/workflow_run_fields.py

@@ -11,8 +11,6 @@ workflow_run_for_log_fields = {
     "error": fields.String,
     "elapsed_time": fields.Float,
     "total_tokens": fields.Integer,
-    "total_price": fields.Float,
-    "currency": fields.String,
     "total_steps": fields.Integer,
     "created_at": TimestampField,
     "finished_at": TimestampField
@@ -29,8 +27,6 @@ workflow_run_for_list_fields = {
     "error": fields.String,
     "elapsed_time": fields.Float,
     "total_tokens": fields.Integer,
-    "total_price": fields.Float,
-    "currency": fields.String,
     "total_steps": fields.Integer,
     "created_by_account": fields.Nested(simple_account_fields, attribute='created_by_account', allow_null=True),
     "created_at": TimestampField,
@@ -56,8 +52,6 @@ workflow_run_detail_fields = {
     "error": fields.String,
     "elapsed_time": fields.Float,
     "total_tokens": fields.Integer,
-    "total_price": fields.Float,
-    "currency": fields.String,
     "total_steps": fields.Integer,
     "created_by_role": fields.String,
     "created_by_account": fields.Nested(simple_account_fields, attribute='created_by_account', allow_null=True),

api/models/workflow.py

@@ -216,8 +216,6 @@ class WorkflowRun(db.Model):
     - error (string) `optional` Error reason
     - elapsed_time (float) `optional` Time consumption (s)
     - total_tokens (int) `optional` Total tokens used
-    - total_price (decimal) `optional` Total cost
-    - currency (string) `optional` Currency, such as USD / RMB
     - total_steps (int) Total steps (redundant), default 0
     - created_by_role (string) Creator role
 
@@ -251,8 +249,6 @@ class WorkflowRun(db.Model):
     error = db.Column(db.Text)
     elapsed_time = db.Column(db.Float, nullable=False, server_default=db.text('0'))
     total_tokens = db.Column(db.Integer, nullable=False, server_default=db.text('0'))
-    total_price = db.Column(db.Numeric(10, 7))
-    currency = db.Column(db.String(255))
     total_steps = db.Column(db.Integer, server_default=db.text('0'))
     created_by_role = db.Column(db.String(255), nullable=False)
     created_by = db.Column(UUID, nullable=False)