fix: remote agent exec errors

agent/agent.go

@@ -102,6 +102,8 @@ type Agent struct {
 	wsMu          sync.Mutex
 	stopCh        chan struct{}
 	wsStopCh      chan struct{}     // 用于停止当前 WebSocket 相关的 goroutine
+	taskLogs      map[uint][]string // 记录最近的日志行，用于失败显示
+	logMu         sync.Mutex        // taskLogs 的锁
 }
 
 func NewAgent(config *Config, configFile string) *Agent {
@@ -112,6 +114,8 @@ func NewAgent(config *Config, configFile string) *Agent {
 		tasks:         make(map[uint]*AgentTask),
 		client:        &http.Client{Timeout: 30 * time.Second},
 		stopCh:        make(chan struct{}),
+		lastTaskCount: -1,
+		taskLogs:      make(map[uint][]string),
 	}
 
 	// 初始化调度器
@@ -152,6 +156,12 @@ func (h *AgentHandler) OnTaskHeartbeat(req *executor.ExecutionRequest, duration
 			"duration": duration,
 		})
 	}
+
+	// 每分钟打印一次任务还在运行的日志，提升长任务的存在感
+	if duration >= 60000 && (duration/60000 > (duration-3000)/60000) {
+		logger.Infof("[Scheduler] 任务 #%s 仍在运行中... (已耗时: %v)",
+			req.TaskID, (time.Duration(duration) * time.Millisecond).Round(time.Second))
+	}
 }
 
 func (h *AgentHandler) OnTaskStarted(req *executor.ExecutionRequest) {}
@@ -171,6 +181,11 @@ func (h *AgentHandler) OnTaskCompleted(req *executor.ExecutionRequest, result *e
 		StartTime: result.StartTime.Unix(),
 		EndTime:   result.EndTime.Unix(),
 	})
+
+	if result.Status == "failed" {
+		h.agent.printLastLogs(result.LogID)
+	}
+	h.agent.clearTaskLog(result.LogID)
 }
 
 func (h *AgentHandler) OnTaskFailed(req *executor.ExecutionRequest, err error) {
@@ -195,6 +210,9 @@ func (h *AgentHandler) OnTaskFailed(req *executor.ExecutionRequest, err error) {
 		StartTime: time.Now().Unix(),
 		EndTime:   time.Now().Unix(),
 	})
+
+	h.agent.printLastLogs(req.LogID)
+	h.agent.clearTaskLog(req.LogID)
 }
 
 func (h *AgentHandler) OnCronNextRun(req *executor.ExecutionRequest, nextRun time.Time) {}
@@ -345,6 +363,7 @@ func (a *Agent) handleWSMessage(msg *WSMessage) {
 }
 
 func (a *Agent) fetchTasks() {
+	logger.Info("正在从服务器拉取任务列表...")
 	if err := a.sendWSMessage(WSTypeFetchTasks, map[string]interface{}{}); err != nil {
 		logger.Warnf("请求任务列表失败: %v", err)
 	}
@@ -431,8 +450,8 @@ func (a *Agent) handleTasks(data json.RawMessage) {
 	json.Unmarshal(data, &resp)
 
 	newCount := len(resp.Tasks)
-	if newCount != a.lastTaskCount {
+	if newCount != a.lastTaskCount || newCount == 0 {
-		logger.Infof("任务列表更新: %d -> %d 个任务", a.lastTaskCount, newCount)
+		logger.Infof("任务列表同步成功: 共获取到 %d 个任务", newCount)
 		a.lastTaskCount = newCount
 	}
 
@@ -486,6 +505,9 @@ func (w *RealTimeLogWriter) Write(p []byte) (n int, err error) {
 		return 0, nil
 	}
 
+	// 记录到本地缓存，用于失败时显示
+	w.agent.addTaskLog(w.logID, p)
+
 	// 构造消息
 	msg := map[string]interface{}{
 		"log_id":  w.logID,
@@ -596,7 +618,7 @@ func (a *Agent) updateTasks(tasks []AgentTask) {
 		if _, exists := newTasks[id]; !exists {
 			a.cronManager.RemoveTask(fmt.Sprintf("%d", id))
 			delete(a.tasks, id)
-			logger.Infof("移除任务 #%d", id)
+			logger.Infof("移除调度任务 #%d", id)
 		}
 	}
 
@@ -607,13 +629,13 @@ func (a *Agent) updateTasks(tasks []AgentTask) {
 			if task.Enabled {
 				err := a.cronManager.AddTask(task)
 				if err != nil {
-					logger.Errorf("调度任务 #%d 失败: %v", id, err)
+					logger.Errorf("添加调度任务 #%d 失败: %v", id, err)
 					continue
 				}
-				logger.Infof("已调度任务 #%d %s (%s)", id, task.Name, task.GetSchedule())
+				logger.Infof("已添加调度任务 #%d %s (%s)", id, task.Name, task.GetSchedule())
 			} else {
 				a.cronManager.RemoveTask(fmt.Sprintf("%d", id))
-				logger.Infof("任务 #%d 已禁用", id)
+				logger.Infof("调度任务 #%d 已禁用", id)
 			}
 			a.tasks[id] = task
 		}
@@ -634,6 +656,50 @@ func (a *Agent) clearAllTasks() {
 	logger.Info("所有任务已清空")
 }
 
+func (a *Agent) addTaskLog(logID uint, p []byte) {
+	if logID == 0 {
+		return
+	}
+	a.logMu.Lock()
+	defer a.logMu.Unlock()
+
+	content := string(p)
+	lines := strings.Split(strings.TrimSuffix(content, "\n"), "\n")
+
+	a.taskLogs[logID] = append(a.taskLogs[logID], lines...)
+	if len(a.taskLogs[logID]) > 50 {
+		a.taskLogs[logID] = a.taskLogs[logID][len(a.taskLogs[logID])-50:]
+	}
+}
+
+func (a *Agent) printLastLogs(logID uint) {
+	if logID == 0 {
+		return
+	}
+	a.logMu.Lock()
+	lines, ok := a.taskLogs[logID]
+	a.logMu.Unlock()
+
+	if !ok || len(lines) == 0 {
+		return
+	}
+
+	logger.Errorf("--- 任务 #%d 失败日志预览 (最近 %d 行) ---", logID, len(lines))
+	for _, line := range lines {
+		fmt.Println("  " + line)
+	}
+	logger.Errorf("--- 任务 #%d 结束 ---", logID)
+}
+
+func (a *Agent) clearTaskLog(logID uint) {
+	if logID == 0 {
+		return
+	}
+	a.logMu.Lock()
+	defer a.logMu.Unlock()
+	delete(a.taskLogs, logID)
+}
+
 // executeTask 已被 AgentHandler.OnTaskCompleted 代替，此处删除旧实现
 
 func (a *Agent) doRequest(method, path string, body interface{}) (*http.Response, error) {

internal/controllers/agent_controller.go

@@ -439,6 +439,9 @@ func (c *AgentController) WSConnect(ctx *gin.Context) {
 	// 启动读写协程
 	go c.wsWritePump(ac)
 	go c.wsReadPump(ac, agent)
+
+	// 主动推送任务列表
+	go c.wsManager.BroadcastTasks(agent.ID)
 }
 
 // wsReadPump 读取消息

internal/executor/cron.go

@@ -77,6 +77,11 @@ func (m *CronManager) AddTask(task CronTask) error {
 	timeout := task.GetTimeout()
 
 	entryID, err := m.cron.AddFunc(task.GetSchedule(), func() {
+		defer func() {
+			if r := recover(); r != nil {
+				m.logger.Errorf("[CronManager] 任务 #%s 执行过程中发生 Panic: %v", taskID, r)
+			}
+		}()
 		m.logger.Infof("[CronManager] 触发计划任务 #%s (%s)", taskID, name)
 
 		req := &ExecutionRequest{

internal/executor/scheduler.go

@@ -262,15 +262,27 @@ func (s *Scheduler) worker(id int) {
 		case <-s.stopCh:
 			return
 		case req := <-s.taskQueue:
+			func() {
+				defer func() {
+					if r := recover(); r != nil {
+						s.logger.Errorf("[Scheduler] Worker %d panic while processing task %s: %v", id, req.TaskID, r)
+					}
+				}()
 				// 速率限制
 				<-s.rateLimiter
 				s.executeTask(req)
+			}()
 		}
 	}
 }
 
 // executeTask 执行任务（本地执行）
 func (s *Scheduler) executeTask(req *ExecutionRequest) (*ExecutionResult, error) {
+	defer func() {
+		if r := recover(); r != nil {
+			s.logger.Errorf("[Scheduler] 任务 %s 执行过程中发生 Panic: %v", req.TaskID, r)
+		}
+	}()
 	start := time.Now()
 
 	s.logger.Infof("[Scheduler] 执行任务 %s (名称: %s, 类型: %s)", req.TaskID, req.Name, req.Type)

internal/services/agent_ws_service.go

@@ -271,6 +271,12 @@ func (m *AgentWSManager) cleanupLoop() {
 	NewAgentService().ResetAllAgentsToOffline()
 
 	for range ticker.C {
+		func() {
+			defer func() {
+				if r := recover(); r != nil {
+					logger.Errorf("[AgentWS] cleanupLoop panic: %v", r)
+				}
+			}()
 			m.mu.Lock()
 			now := time.Now()
 
@@ -313,6 +319,7 @@ func (m *AgentWSManager) cleanupLoop() {
 			}
 
 			m.mu.Unlock()
+		}()
 	}
 }
 

internal/services/tasks/executor_service.go

@@ -161,6 +161,12 @@ func (h *ServerSchedulerHandler) OnTaskHeartbeat(req *executor.ExecutionRequest,
 	if req.LogID > 0 {
 		h.es.taskLogService.UpdateTaskDuration(req.LogID, duration)
 	}
+
+	// 每分钟打印一次任务还在运行的日志
+	if duration >= 60000 && (duration/60000 > (duration-3000)/60000) {
+		logger.Infof("[Scheduler] 任务 #%s 仍在运行中... (已耗时: %v)",
+			req.TaskID, (time.Duration(duration) * time.Millisecond).Round(time.Second))
+	}
 }
 
 func (h *ServerSchedulerHandler) OnTaskStarted(req *executor.ExecutionRequest) {