feat: playbook执行日志实时流式推送(SSE) + 任务详情显示原始日志

internal/services/ansible.go

@@ -703,12 +703,45 @@ func (s *AnsibleService) runPlaybook(task *models.TaskExecution, playbookPath st
 		cmd = exec.CommandContext(ctx, "ansible-playbook", args...)
 	}
 
-	var output bytes.Buffer
-	cmd.Stdout = &output
-	cmd.Stderr = &output
+	// 实时写入日志的 Writer
+	sw := &syncWriter{buf: bytes.NewBuffer(nil)}
+	cmd.Stdout = sw
+	cmd.Stderr = sw
+
+	// 启动 goroutine 实时搬运日志到 task.Output
+	done := make(chan struct{})
+	go func() {
+		ticker := time.NewTicker(200 * time.Millisecond)
+		defer ticker.Stop()
+		var lastLen int
+		for {
+			select {
+			case <-ticker.C:
+				s.taskLock.Lock()
+				sw.mu.Lock()
+				currentLen := sw.buf.Len()
+				if currentLen > lastLen {
+					task.Output = sw.buf.String()
+					lastLen = currentLen
+				}
+				sw.mu.Unlock()
+				s.taskLock.Unlock()
+			case <-done:
+				return
+			}
+		}
+	}()
 
 	err := cmd.Run()
+	close(done) // 通知 goroutine 退出
 
+	// 最终同步一次完整日志
+	sw.mu.Lock()
+	finalOutput := sw.buf.String()
+	sw.mu.Unlock()
+
+	s.taskLock.Lock()
+	task.Output = finalOutput
 	task.EndTime = time.Now()
 	if err != nil {
 		task.Status = "failed"
@@ -716,7 +749,25 @@ func (s *AnsibleService) runPlaybook(task *models.TaskExecution, playbookPath st
 	} else {
 		task.Status = "success"
 	}
-	task.Output = output.String()
+	s.taskLock.Unlock()
+}
+
+// syncWriter 线程安全的 Writer
+type syncWriter struct {
+	buf *bytes.Buffer
+	mu  sync.Mutex
+}
+
+func (w *syncWriter) Write(p []byte) (n int, err error) {
+	w.mu.Lock()
+	defer w.mu.Unlock()
+	return w.buf.Write(p)
+}
+
+func (w *syncWriter) String() string {
+	w.mu.Lock()
+	defer w.mu.Unlock()
+	return w.buf.String()
 }
 
 // ListPlaybooks 列出可用Playbooks