feat: 实时日志 (#584)

* feat: 历史日志

* feat: 实时日志

* fix: EventEmitter实现事件监听

src/webui/src/api/Log.ts

@@ -1,6 +1,7 @@
 import type { RequestHandler } from 'express';
 import { sendError, sendSuccess } from '../utils/response';
 import { WebUiConfigWrapper } from '../helper/config';
+import { logSubscription } from '@/common/log';
 
 // 日志记录
 export const LogHandler: RequestHandler = async (req, res) => {
@@ -17,3 +18,17 @@ export const LogListHandler: RequestHandler = async (_, res) => {
     const logList = WebUiConfigWrapper.GetLogsList();
     return sendSuccess(res, logList);
 };
+// 实时日志（SSE）
+export const LogRealTimeHandler: RequestHandler = async (req, res) => {
+    const listener = (log: string) => {
+        try {
+            res.write(log + '\n');
+        } catch (error) {
+            // ignore
+        }
+    };
+    logSubscription.subscribe(listener);
+    req.on('close', () => {
+        logSubscription.unsubscribe(listener);
+    });
+};

src/webui/src/router/Log.ts

@@ -1,9 +1,13 @@
 import { Router } from 'express';
-import { LogHandler, LogListHandler } from '../api/Log';
+import { LogHandler, LogListHandler, LogRealTimeHandler } from '../api/Log';
+
 const router = Router();
 // router:读取日志内容
 router.get('/GetLog', LogHandler);
 // router:读取日志列表
 router.get('/GetLogList', LogListHandler);
 
+// router:实时日志
+router.get('/GetLogRealTime', LogRealTimeHandler);
+
 export { router as LogRouter };