feat: add pipeline_restart() - restart completed/failed/cancelled tasks with new version

pipeline_service/init.py

@@ -264,7 +264,49 @@ async def pipeline_cancel(tenant_id, task_id):
         result["message"] = "任务已取消"
     except Exception as e:
         result["message"] = str(e)
-    return json.dumps(result, ensure_ascii=False)
+    return json.dumps(result, ensure_ascii=False, default=str)
+
+
+async def pipeline_restart(tenant_id, task_id):
+    """重启已完成/失败/取消的任务 — 重置所有步骤为pending，新版本继续。"""
+    result = {"success": False}
+    try:
+        task = await get_task(tenant_id, task_id)
+        if not task:
+            result["message"] = "任务不存在"
+            return json.dumps(result, ensure_ascii=False)
+
+        if is_running(task_id):
+            result["message"] = "任务正在执行中，请先暂停"
+            return json.dumps(result, ensure_ascii=False)
+
+        # Stop any lingering executor
+        await stop_task(task_id)
+
+        # Get step names to reset
+        steps = await get_task_steps(task_id)
+        step_names = [s['step_name'] for s in steps]
+
+        # New version
+        current_version = task.get("current_version", task.get("current_Version", 1))
+        if isinstance(current_version, str):
+            current_version = int(current_version)
+        new_version = current_version + 1
+        await update_task_version(task_id, new_version)
+
+        # Reset all steps to pending
+        await reset_steps(task_id, step_names)
+
+        # Restart execution
+        await update_task_state(task_id, TASK_RUNNING)
+        await start_task(task_id)
+
+        result["success"] = True
+        result["new_version"] = new_version
+        result["message"] = f"任务已重新启动 v{new_version}"
+    except Exception as e:
+        result["message"] = str(e)
+    return json.dumps(result, ensure_ascii=False, default=str)
 
 
 def pipeline_handlers():
@@ -302,6 +344,7 @@ def load_pipeline_service():
     env.pipeline_pause = pipeline_pause
     env.pipeline_resume = pipeline_resume
     env.pipeline_cancel = pipeline_cancel
+    env.pipeline_restart = pipeline_restart
 
     # Handler management
     env.pipeline_register_handler = register_handler