fix workflow executor

app/chain/workflow.py

@@ -3,6 +3,8 @@ from collections import defaultdict, deque
 from concurrent.futures import ThreadPoolExecutor
 from typing import List, Tuple
 
+from pydantic.fields import Callable
+
 from app.chain import ChainBase
 from app.core.config import global_vars
 from app.core.workflow import WorkFlowManager
@@ -17,20 +19,32 @@ class WorkflowExecutor:
     工作流执行器
     """
 
-    def __init__(self, workflow: Workflow):
+    def __init__(self, workflow: Workflow, step_callback: Callable = None):
         """
         初始化工作流执行器
+        :param workflow: 工作流对象
+        :param step_callback: 步骤回调函数
         """
-        self.workflowoper = WorkflowOper()
-        self.workflowmanager = WorkFlowManager()
-
+        # 工作流数据
         self.workflow = workflow
+        self.step_callback = step_callback
         self.actions = {action['id']: Action(**action) for action in workflow.actions}
         self.flows = [ActionFlow(**flow) for flow in workflow.flows]
 
         self.success = True
         self.errmsg = ""
 
+        # 工作流管理器
+        self.workflowmanager = WorkFlowManager()
+        # 线程安全队列
+        self.queue = deque()
+        # 锁用于保证线程安全
+        self.lock = threading.Lock()
+        # 线程池
+        self.executor = ThreadPoolExecutor()
+        # 跟踪运行中的任务数
+        self.running_tasks = 0
+
         # 构建邻接表、入度表
         self.adjacency = defaultdict(list)
         self.indegree = defaultdict(int)
@@ -51,15 +65,6 @@ class WorkflowExecutor:
         else:
             self.context = ActionContext()
 
-        # 线程安全队列
-        self.queue = deque()
-        # 锁用于保证线程安全
-        self.lock = threading.Lock()
-        # 线程池
-        self.executor = ThreadPoolExecutor()
-        # 跟踪运行中的任务数
-        self.running_tasks = 0
-
         # 初始化队列：入度为0的节点
         for action_id in self.actions:
             if self.indegree[action_id] == 0:
@@ -102,7 +107,7 @@ class WorkflowExecutor:
         执行单个节点操作，返回修改后的上下文和节点ID
         """
         action = self.actions[node_id]
-        state, result_ctx = self.workflowmanager.excute(action, context)
+        state, result_ctx = self.workflowmanager.excute(action, context=context)
         return action, state, result_ctx
 
     def on_node_complete(self, future):
@@ -117,17 +122,18 @@ class WorkflowExecutor:
             self.errmsg = f"{action.name} 执行失败"
             return
 
-        # 更新主上下文
         with self.lock:
+            # 更新主上下文
             self.merge_context(result_ctx)
-            self.save_step(action)
+            # 回调
+            if self.step_callback:
+                self.step_callback(action, self.context)
 
         # 处理后继节点
         successors = self.adjacency.get(action.id, [])
         for succ_id in successors:
             with self.lock:
                 self.indegree[succ_id] -= 1
-                print(f"节点 {succ_id} 入度减至 {self.indegree[succ_id]}")
                 if self.indegree[succ_id] == 0:
                     self.queue.append(succ_id)
 
@@ -146,12 +152,6 @@ class WorkflowExecutor:
                 self_context_dict[key] = value
         self.context = ActionContext(**self_context_dict)
 
-    def save_step(self, node_id: int):
-        """
-        保存上下文到数据库
-        """
-        self.workflowoper.step(self.workflow.id, action_id=node_id, context=self.context.dict())
-
 
 class WorkflowChain(ChainBase):
     """
@@ -159,8 +159,8 @@ class WorkflowChain(ChainBase):
     """
 
     def __init__(self):
-        self.workflowoper = WorkflowOper()
         super().__init__()
+        self.workflowoper = WorkflowOper()
 
     def process(self, workflow_id: int, from_begin: bool = True) -> Tuple[bool, str]:
         """
@@ -168,6 +168,13 @@ class WorkflowChain(ChainBase):
         :param workflow_id: 工作流ID
         :param from_begin: 是否从头开始，默认为True
         """
+
+        def save_step(action: Action, context: ActionContext):
+            """
+            保存上下文到数据库
+            """
+            self.workflowoper.step(workflow_id, action_id=action.id, context=context.dict())
+
         # 重置工作流
         if from_begin:
             self.workflowoper.reset(workflow_id)
@@ -188,7 +195,7 @@ class WorkflowChain(ChainBase):
         self.workflowoper.start(workflow_id)
 
         # 执行工作流
-        executor = WorkflowExecutor(workflow)
+        executor = WorkflowExecutor(workflow, step_callback=save_step)
         executor.execute()
 
         if executor.success: