Add logging functionality and new log-related endpoints
- Integrated a logging service to redirect console outputs. - Added new endpoints for managing logs: - Retrieve log file list - Read specific log file content - Fetch recent logs - Stream logs via Server-Sent Events - Search logs by keyword - Cleanup old log files - Updated application metadata to include new log management features.
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367
public/js/logs.js
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367
public/js/logs.js
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// 实时日志查看页面JavaScript
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class LogViewer {
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constructor() {
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this.eventSource = null;
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this.logs = [];
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this.maxLogs = 1000; // 最多保留1000条日志
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this.autoScroll = true;
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this.currentFilter = {
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level: '',
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keyword: ''
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};
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this.init();
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}
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async init() {
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console.log('初始化日志查看器...');
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// 绑定事件
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this.bindEvents();
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// 加载日志文件列表
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await this.loadLogFiles();
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// 加载最近日志
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await this.loadRecentLogs();
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console.log('日志查看器初始化完成');
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}
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bindEvents() {
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// 开始/停止实时日志流
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document.getElementById('startStreamBtn').addEventListener('click', () => {
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this.startStream();
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});
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document.getElementById('stopStreamBtn').addEventListener('click', () => {
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this.stopStream();
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});
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// 清空日志
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document.getElementById('clearLogsBtn').addEventListener('click', () => {
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this.clearLogs();
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});
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// 自动滚动切换
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document.getElementById('autoScrollCheck').addEventListener('change', (e) => {
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this.autoScroll = e.target.checked;
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if (this.autoScroll) {
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this.scrollToBottom();
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}
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});
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// 日志级别过滤
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document.getElementById('logLevelFilter').addEventListener('change', (e) => {
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this.currentFilter.level = e.target.value;
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this.renderLogs();
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});
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// 搜索
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document.getElementById('searchBtn').addEventListener('click', () => {
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this.searchLogs();
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});
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document.getElementById('searchKeyword').addEventListener('keypress', (e) => {
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if (e.key === 'Enter') {
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this.searchLogs();
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}
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});
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// 日志文件选择
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document.getElementById('logFileSelect').addEventListener('change', async (e) => {
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const filename = e.target.value;
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if (filename) {
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await this.loadLogFile(filename);
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} else {
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await this.loadRecentLogs();
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}
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});
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}
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async loadLogFiles() {
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try {
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const response = await fetch('/api/history/logs/files?days=7');
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const result = await response.json();
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if (result.success) {
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const select = document.getElementById('logFileSelect');
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// 保留"今日日志"选项
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select.innerHTML = '<option value="">今日日志</option>';
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result.data.forEach(file => {
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const option = document.createElement('option');
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option.value = file.filename;
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option.textContent = `${file.date} (${this.formatFileSize(file.size)})`;
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select.appendChild(option);
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});
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}
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} catch (error) {
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console.error('加载日志文件列表失败:', error);
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this.showAlert('加载日志文件列表失败', 'danger');
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}
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}
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async loadRecentLogs() {
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try {
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const response = await fetch('/api/history/logs/recent?limit=100');
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const result = await response.json();
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if (result.success) {
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this.logs = result.data.map(log => ({
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timestamp: log.timestamp,
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level: log.level.toUpperCase(),
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message: log.message
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}));
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this.renderLogs();
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this.updateLogCount();
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}
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} catch (error) {
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console.error('加载最近日志失败:', error);
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this.showAlert('加载日志失败', 'danger');
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}
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}
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async loadLogFile(filename) {
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try {
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const response = await fetch(`/api/history/logs/file/${filename}?limit=500`);
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const result = await response.json();
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if (result.success) {
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this.logs = result.data.map(log => ({
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timestamp: log.timestamp,
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level: log.level.toUpperCase(),
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message: log.message
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}));
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this.renderLogs();
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this.updateLogCount();
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}
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} catch (error) {
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console.error('加载日志文件失败:', error);
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this.showAlert('加载日志文件失败', 'danger');
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}
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}
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startStream() {
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if (this.eventSource) {
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return; // 已经在运行
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}
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try {
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this.eventSource = new EventSource('/api/history/logs/stream');
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this.eventSource.onopen = () => {
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this.updateConnectionStatus(true);
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document.getElementById('startStreamBtn').disabled = true;
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document.getElementById('stopStreamBtn').disabled = false;
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this.showAlert('实时日志流已连接', 'success');
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};
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this.eventSource.onmessage = (event) => {
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try {
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const data = JSON.parse(event.data);
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if (data.type === 'connected') {
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console.log('实时日志流连接成功');
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} else if (data.type === 'log') {
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this.addLog(data.data);
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} else if (data.type === 'heartbeat') {
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// 心跳包，保持连接
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}
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} catch (error) {
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console.error('解析日志数据失败:', error);
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}
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};
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this.eventSource.onerror = (error) => {
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console.error('实时日志流错误:', error);
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this.updateConnectionStatus(false);
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this.stopStream();
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this.showAlert('实时日志流连接断开', 'warning');
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};
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} catch (error) {
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console.error('启动实时日志流失败:', error);
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this.showAlert('启动实时日志流失败: ' + error.message, 'danger');
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}
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}
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stopStream() {
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if (this.eventSource) {
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this.eventSource.close();
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this.eventSource = null;
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this.updateConnectionStatus(false);
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document.getElementById('startStreamBtn').disabled = false;
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document.getElementById('stopStreamBtn').disabled = true;
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this.showAlert('实时日志流已停止', 'info');
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}
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}
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addLog(logEntry) {
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// 添加新日志
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this.logs.push({
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timestamp: logEntry.timestamp,
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level: logEntry.level ? logEntry.level.toUpperCase() : 'INFO',
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message: logEntry.message
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});
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// 限制日志数量
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if (this.logs.length > this.maxLogs) {
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this.logs.shift();
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}
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// 更新显示
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this.renderLogs();
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this.updateLogCount();
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// 自动滚动
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if (this.autoScroll) {
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setTimeout(() => this.scrollToBottom(), 10);
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}
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}
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renderLogs() {
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const container = document.getElementById('logContainer');
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// 过滤日志
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let filteredLogs = this.logs;
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if (this.currentFilter.level) {
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filteredLogs = filteredLogs.filter(log => log.level === this.currentFilter.level);
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}
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if (this.currentFilter.keyword) {
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const keyword = this.currentFilter.keyword.toLowerCase();
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filteredLogs = filteredLogs.filter(log =>
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log.message.toLowerCase().includes(keyword) ||
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log.timestamp.toLowerCase().includes(keyword)
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);
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}
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// 渲染日志
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container.innerHTML = filteredLogs.map(log => {
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const levelClass = log.level || 'INFO';
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const messageClass = log.level ? log.level.toLowerCase() : 'info';
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return `
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<div class="log-entry ${messageClass}">
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<span class="log-timestamp">${log.timestamp || ''}</span>
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<span class="log-level ${levelClass}">${levelClass}</span>
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<span class="log-message">${this.escapeHtml(log.message)}</span>
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</div>
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`;
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}).join('');
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}
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clearLogs() {
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if (confirm('确定要清空所有日志吗？')) {
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this.logs = [];
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this.renderLogs();
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this.updateLogCount();
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this.showAlert('日志已清空', 'info');
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}
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}
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searchLogs() {
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const keyword = document.getElementById('searchKeyword').value.trim();
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this.currentFilter.keyword = keyword;
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this.renderLogs();
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}
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scrollToBottom() {
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const container = document.getElementById('logContainer');
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container.scrollTop = container.scrollHeight;
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// 显示自动滚动指示器
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const indicator = document.getElementById('autoScrollIndicator');
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if (this.autoScroll) {
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indicator.classList.add('active');
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setTimeout(() => {
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indicator.classList.remove('active');
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}, 2000);
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}
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}
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updateLogCount() {
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const count = this.logs.length;
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document.getElementById('logCount').textContent = count;
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}
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updateConnectionStatus(connected) {
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const indicator = document.getElementById('connectionStatus');
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const text = document.getElementById('connectionStatusText');
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if (connected) {
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indicator.className = 'status-indicator online';
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text.textContent = '已连接';
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} else {
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indicator.className = 'status-indicator offline';
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text.textContent = '未连接';
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}
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}
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formatFileSize(bytes) {
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if (bytes < 1024) return bytes + ' B';
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if (bytes < 1024 * 1024) return (bytes / 1024).toFixed(2) + ' KB';
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return (bytes / (1024 * 1024)).toFixed(2) + ' MB';
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}
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escapeHtml(text) {
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const div = document.createElement('div');
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div.textContent = text;
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return div.innerHTML;
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}
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showAlert(message, type = 'info') {
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const alertContainer = document.getElementById('alertContainer');
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if (!alertContainer) return;
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const alertId = 'alert-' + Date.now();
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const alertHtml = `
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<div class="alert alert-${type} alert-dismissible fade show" role="alert" id="${alertId}">
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<i class="bi bi-${this.getAlertIcon(type)}"></i>
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${message}
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<button type="button" class="btn-close" data-bs-dismiss="alert"></button>
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</div>
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`;
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alertContainer.insertAdjacentHTML('beforeend', alertHtml);
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// 自动移除提示
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setTimeout(() => {
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const alertElement = document.getElementById(alertId);
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if (alertElement) {
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alertElement.remove();
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}
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}, 3000);
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}
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getAlertIcon(type) {
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const icons = {
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'success': 'check-circle-fill',
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'danger': 'exclamation-triangle-fill',
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'warning': 'exclamation-triangle-fill',
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'info': 'info-circle-fill'
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};
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return icons[type] || 'info-circle-fill';
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}
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}
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// 全局变量
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let logViewer;
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// 页面加载完成后初始化
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document.addEventListener('DOMContentLoaded', () => {
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logViewer = new LogViewer();
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});
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// 页面卸载时清理
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window.addEventListener('beforeunload', () => {
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if (logViewer) {
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logViewer.stopStream();
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}
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});
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