mirror of
https://github.com/woodchen-ink/proxy-go.git
synced 2025-07-18 08:31:55 +08:00
wood chen
b8d7659aa9
- Added uptime and error rate metrics to the MetricsHandler. - Introduced helper functions for calculating error rates and retrieving recent requests. - Improved latency formatting in the metrics template for better readability. - Streamlined the metrics data structure to include requests per second and recent request logs.
633 lines
19 KiB
Go
633 lines
19 KiB
Go
package handler
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"runtime"
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"strings"
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"sync/atomic"
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"time"
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)
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type Metrics struct {
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// 基础指标
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Uptime string `json:"uptime"`
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ActiveRequests int64 `json:"active_requests"`
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TotalRequests int64 `json:"total_requests"`
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TotalErrors int64 `json:"total_errors"`
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ErrorRate float64 `json:"error_rate"`
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// 系统指标
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NumGoroutine int `json:"num_goroutine"`
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MemoryUsage string `json:"memory_usage"`
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// 性能指标
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AverageResponseTime string `json:"avg_response_time"`
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RequestsPerSecond float64 `json:"requests_per_second"`
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// 新增字段
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TotalBytes int64 `json:"total_bytes"`
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BytesPerSecond float64 `json:"bytes_per_second"`
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StatusCodeStats map[string]int64 `json:"status_code_stats"`
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LatencyPercentiles map[string]float64 `json:"latency_percentiles"`
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TopPaths []PathMetrics `json:"top_paths"`
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RecentRequests []RequestLog `json:"recent_requests"`
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}
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type PathMetrics struct {
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Path string `json:"path"`
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RequestCount int64 `json:"request_count"`
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ErrorCount int64 `json:"error_count"`
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AvgLatency string `json:"avg_latency"`
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BytesTransferred int64 `json:"bytes_transferred"`
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}
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// 添加格式化字节的辅助函数
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func formatBytes(bytes uint64) string {
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const (
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MB = 1024 * 1024
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KB = 1024
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)
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switch {
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case bytes >= MB:
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return fmt.Sprintf("%.2f MB", float64(bytes)/MB)
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case bytes >= KB:
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return fmt.Sprintf("%.2f KB", float64(bytes)/KB)
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default:
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return fmt.Sprintf("%d Bytes", bytes)
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}
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}
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func (h *ProxyHandler) MetricsHandler(w http.ResponseWriter, r *http.Request) {
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var m runtime.MemStats
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runtime.ReadMemStats(&m)
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totalRequests := atomic.LoadInt64(&h.metrics.totalRequests)
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totalErrors := atomic.LoadInt64(&h.metrics.totalErrors)
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uptime := time.Since(h.startTime)
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// 获取状态码统计
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statusStats := make(map[string]int64)
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for i, v := range h.metrics.statusStats {
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statusStats[fmt.Sprintf("%dxx", i+1)] = v.Load()
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}
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// 获取Top 10路径统计
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var pathMetrics []PathMetrics
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h.metrics.pathStats.Range(func(key, value interface{}) bool {
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stats := value.(*PathStats)
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if stats.requests.Load() == 0 {
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return true
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}
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pathMetrics = append(pathMetrics, PathMetrics{
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Path: key.(string),
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RequestCount: stats.requests.Load(),
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ErrorCount: stats.errors.Load(),
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AvgLatency: formatDuration(time.Duration(stats.latencySum.Load()) / time.Duration(stats.requests.Load())),
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BytesTransferred: stats.bytes.Load(),
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})
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return len(pathMetrics) < 10
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})
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metrics := Metrics{
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Uptime: uptime.String(),
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ActiveRequests: atomic.LoadInt64(&h.metrics.activeRequests),
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TotalRequests: totalRequests,
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TotalErrors: totalErrors,
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ErrorRate: getErrorRate(totalErrors, totalRequests),
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NumGoroutine: runtime.NumGoroutine(),
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MemoryUsage: formatBytes(m.Alloc),
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TotalBytes: h.metrics.totalBytes.Load(),
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BytesPerSecond: float64(h.metrics.totalBytes.Load()) / max(uptime.Seconds(), 1),
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RequestsPerSecond: float64(totalRequests) / max(uptime.Seconds(), 1),
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StatusCodeStats: statusStats,
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TopPaths: pathMetrics,
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RecentRequests: getRecentRequests(h),
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}
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(metrics)
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}
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// 添加格式化时间的辅助函数
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func formatDuration(d time.Duration) string {
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if d < time.Millisecond {
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return fmt.Sprintf("%.2f μs", float64(d.Microseconds()))
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}
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if d < time.Second {
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return fmt.Sprintf("%.2f ms", float64(d.Milliseconds()))
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}
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return fmt.Sprintf("%.2f s", d.Seconds())
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}
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// 修改模板,添加登录页面
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var loginTemplate = `
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<!DOCTYPE html>
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<html>
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<head>
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<title>Proxy-Go Metrics Login</title>
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<meta charset="UTF-8">
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<style>
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body {
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font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
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display: flex;
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justify-content: center;
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align-items: center;
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height: 100vh;
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margin: 0;
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background: #f5f5f5;
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}
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.login-card {
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background: white;
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padding: 30px;
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border-radius: 8px;
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box-shadow: 0 2px 4px rgba(0,0,0,0.1);
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width: 300px;
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}
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.login-title {
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text-align: center;
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margin-bottom: 20px;
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color: #333;
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}
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.input-group {
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margin-bottom: 15px;
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}
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input {
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width: 100%;
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padding: 8px;
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border: 1px solid #ddd;
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border-radius: 4px;
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box-sizing: border-box;
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}
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button {
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width: 100%;
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padding: 10px;
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background: #4CAF50;
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color: white;
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border: none;
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border-radius: 4px;
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cursor: pointer;
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}
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button:hover {
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background: #45a049;
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}
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.error {
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color: red;
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text-align: center;
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margin-bottom: 15px;
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display: none;
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}
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</style>
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</head>
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<body>
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<div class="login-card">
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<h2 class="login-title">Metrics Login</h2>
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<div id="error" class="error">密码错误</div>
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<div class="input-group">
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<input type="password" id="password" placeholder="请输入密码">
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</div>
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<button onclick="login()">登录</button>
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</div>
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<script>
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function login() {
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const password = document.getElementById('password').value;
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fetch('/metrics/auth', {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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},
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body: JSON.stringify({password: password})
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})
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.then(response => {
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if (response.ok) {
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// 登录成功,保存token并跳转
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response.json().then(data => {
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localStorage.setItem('metricsToken', data.token);
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window.location.href = '/metrics/dashboard';
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});
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} else {
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// 显示错误信息
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document.getElementById('error').style.display = 'block';
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}
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})
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.catch(error => {
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console.error('Error:', error);
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document.getElementById('error').style.display = 'block';
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});
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}
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</script>
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</body>
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</html>
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`
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// 修改原有的 metricsTemplate,添加 token 检查
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var metricsTemplate = `
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<!DOCTYPE html>
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<html>
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<head>
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<title>Proxy-Go Metrics</title>
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<meta charset="UTF-8">
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<style>
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body {
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font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
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max-width: 1200px;
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margin: 0 auto;
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padding: 20px;
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background: #f5f5f5;
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}
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.card {
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background: white;
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border-radius: 8px;
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padding: 20px;
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margin-bottom: 20px;
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box-shadow: 0 2px 4px rgba(0,0,0,0.1);
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}
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.metric {
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display: flex;
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justify-content: space-between;
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padding: 10px 0;
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border-bottom: 1px solid #eee;
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}
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.metric:last-child {
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border-bottom: none;
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}
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.metric-label {
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color: #666;
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}
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.metric-value {
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font-weight: bold;
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color: #333;
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}
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h1 {
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color: #333;
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margin-bottom: 30px;
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}
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h2 {
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color: #666;
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margin: 0 0 15px 0;
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}
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.refresh {
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position: fixed;
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top: 20px;
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right: 20px;
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padding: 10px 20px;
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background: #4CAF50;
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color: white;
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border: none;
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border-radius: 4px;
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cursor: pointer;
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}
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.refresh:hover {
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background: #45a049;
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}
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#lastUpdate {
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position: fixed;
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top: 20px;
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right: 140px;
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color: #666;
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}
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/* 添加表格样式 */
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table {
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width: 100%;
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border-collapse: collapse;
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margin: 10px 0;
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}
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th, td {
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padding: 8px;
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text-align: left;
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border-bottom: 1px solid #eee;
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}
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th {
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background: #f8f9fa;
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color: #666;
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}
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.status-badge {
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padding: 3px 8px;
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border-radius: 12px;
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font-size: 12px;
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color: white;
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}
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.status-2xx { background: #28a745; }
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.status-3xx { background: #17a2b8; }
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.status-4xx { background: #ffc107; }
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.status-5xx { background: #dc3545; }
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</style>
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</head>
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<body>
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<h1>Proxy-Go Metrics</h1>
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<div class="card">
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<h2>基础指标</h2>
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<div class="metric">
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<span class="metric-label">运行时间</span>
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<span class="metric-value" id="uptime"></span>
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</div>
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<div class="metric">
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<span class="metric-label">当前活跃请求</span>
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<span class="metric-value" id="activeRequests"></span>
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</div>
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<div class="metric">
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<span class="metric-label">总请求数</span>
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<span class="metric-value" id="totalRequests"></span>
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</div>
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<div class="metric">
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<span class="metric-label">错误数</span>
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<span class="metric-value" id="totalErrors"></span>
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</div>
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<div class="metric">
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<span class="metric-label">错误率</span>
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<span class="metric-value" id="errorRate"></span>
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</div>
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</div>
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<div class="card">
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<h2>系统指标</h2>
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<div class="metric">
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<span class="metric-label">Goroutine数量</span>
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<span class="metric-value" id="numGoroutine"></span>
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</div>
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<div class="metric">
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<span class="metric-label">内存使用</span>
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<span class="metric-value" id="memoryUsage"></span>
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</div>
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</div>
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<div class="card">
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<h2>性能指标</h2>
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<div class="metric">
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<span class="metric-label">平均响应时间</span>
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<span class="metric-value" id="avgResponseTime"></span>
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</div>
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<div class="metric">
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<span class="metric-label">每秒请求数</span>
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<span class="metric-value" id="requestsPerSecond"></span>
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</div>
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</div>
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<div class="card">
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<h2>流量统计</h2>
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<div class="metric">
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<span class="metric-label">总传输字节</span>
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<span class="metric-value" id="totalBytes"></span>
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</div>
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<div class="metric">
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<span class="metric-label">每秒传输</span>
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<span class="metric-value" id="bytesPerSecond"></span>
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</div>
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</div>
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<div class="card">
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<h2>状态码统计</h2>
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<div id="statusCodes"></div>
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</div>
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<div class="card">
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<h2>热门路径 (Top 10)</h2>
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<table id="topPaths">
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<thead>
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<tr>
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<th>路径</th>
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<th>请求数</th>
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<th>错误数</th>
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<th>平均延迟</th>
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<th>传输大小</th>
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</tr>
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</thead>
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<tbody></tbody>
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</table>
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</div>
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<div class="card">
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<h2>最近请求</h2>
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<table id="recentRequests">
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<thead>
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<tr>
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<th>时间</th>
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<th>路径</th>
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<th>状态</th>
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<th>延迟</th>
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<th>大小</th>
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<th>客户端IP</th>
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</tr>
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</thead>
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<tbody></tbody>
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</table>
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</div>
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<span id="lastUpdate"></span>
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<button class="refresh" onclick="refreshMetrics()">刷新</button>
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<script>
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// 检查登录状态
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const token = localStorage.getItem('metricsToken');
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if (!token) {
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window.location.href = '/metrics/ui';
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}
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function formatBytes(bytes) {
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if (bytes === 0) return '0 B';
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const k = 1024;
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const sizes = ['B', 'KB', 'MB', 'GB'];
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const i = Math.floor(Math.log(bytes) / Math.log(k));
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return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
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}
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function formatDate(dateStr) {
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const date = new Date(dateStr);
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return date.toLocaleTimeString();
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}
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function formatLatency(nanoseconds) {
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if (nanoseconds < 1000) {
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return nanoseconds + ' ns';
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} else if (nanoseconds < 1000000) {
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return (nanoseconds / 1000).toFixed(2) + ' µs';
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} else if (nanoseconds < 1000000000) {
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return (nanoseconds / 1000000).toFixed(2) + ' ms';
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} else {
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return (nanoseconds / 1000000000).toFixed(2) + ' s';
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}
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}
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function updateMetrics(data) {
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// 更新现有指标
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document.getElementById('uptime').textContent = data.uptime;
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document.getElementById('activeRequests').textContent = data.active_requests;
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document.getElementById('totalRequests').textContent = data.total_requests;
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document.getElementById('totalErrors').textContent = data.total_errors;
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document.getElementById('errorRate').textContent = (data.error_rate * 100).toFixed(2) + '%';
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document.getElementById('numGoroutine').textContent = data.num_goroutine;
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document.getElementById('memoryUsage').textContent = data.memory_usage;
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document.getElementById('avgResponseTime').textContent = data.avg_response_time;
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document.getElementById('requestsPerSecond').textContent = data.requests_per_second.toFixed(2);
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// 更新流量统计
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document.getElementById('totalBytes').textContent = formatBytes(data.total_bytes);
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document.getElementById('bytesPerSecond').textContent = formatBytes(data.bytes_per_second) + '/s';
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// 更新状态码统计
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const statusCodesHtml = Object.entries(data.status_code_stats)
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.map(([status, count]) => {
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const statusClass = 'status-' + status.charAt(0) + 'xx';
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return '<div class="metric">' +
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'<span class="metric-label">' +
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'<span class="status-badge ' + statusClass + '">' + status + '</span>' +
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'</span>' +
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'<span class="metric-value">' + count + '</span>' +
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'</div>';
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})
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.join('');
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document.getElementById('statusCodes').innerHTML = statusCodesHtml;
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// 更新热门路径
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const topPathsHtml = data.top_paths.map(path =>
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'<tr>' +
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'<td>' + path.path + '</td>' +
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'<td>' + path.request_count + '</td>' +
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'<td>' + path.error_count + '</td>' +
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'<td>' + path.avg_latency + '</td>' +
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'<td>' + formatBytes(path.bytes_transferred) + '</td>' +
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'</tr>'
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).join('');
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document.querySelector('#topPaths tbody').innerHTML = topPathsHtml;
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// 更新最近请求
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const recentRequestsHtml = data.recent_requests.map(req =>
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'<tr>' +
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'<td>' + formatDate(req.Time) + '</td>' +
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'<td>' + req.Path + '</td>' +
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'<td><span class="status-badge status-' + Math.floor(req.Status/100) + 'xx">' + req.Status + '</span></td>' +
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'<td>' + formatLatency(req.Latency) + '</td>' +
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'<td>' + formatBytes(req.BytesSent) + '</td>' +
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'<td>' + req.ClientIP + '</td>' +
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'</tr>'
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).join('');
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document.querySelector('#recentRequests tbody').innerHTML = recentRequestsHtml;
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document.getElementById('lastUpdate').textContent = '最后更新: ' + new Date().toLocaleTimeString();
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}
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function refreshMetrics() {
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fetch('/metrics', {
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headers: {
|
|
'Authorization': 'Bearer ' + token
|
|
}
|
|
})
|
|
.then(response => {
|
|
if (response.status === 401) {
|
|
// token 无效,跳转到登录页
|
|
localStorage.removeItem('metricsToken');
|
|
window.location.href = '/metrics/ui';
|
|
return;
|
|
}
|
|
return response.json();
|
|
})
|
|
.then(data => {
|
|
if (data) updateMetrics(data);
|
|
})
|
|
.catch(error => console.error('Error:', error));
|
|
}
|
|
|
|
// 初始加载
|
|
refreshMetrics();
|
|
|
|
// 每5秒自动刷新
|
|
setInterval(refreshMetrics, 5000);
|
|
</script>
|
|
</body>
|
|
</html>
|
|
`
|
|
|
|
// 添加认证中间件
|
|
func (h *ProxyHandler) AuthMiddleware(next http.HandlerFunc) http.HandlerFunc {
|
|
return func(w http.ResponseWriter, r *http.Request) {
|
|
auth := r.Header.Get("Authorization")
|
|
if auth == "" || !strings.HasPrefix(auth, "Bearer ") {
|
|
http.Error(w, "Unauthorized", http.StatusUnauthorized)
|
|
return
|
|
}
|
|
|
|
token := strings.TrimPrefix(auth, "Bearer ")
|
|
if !h.auth.validateToken(token) {
|
|
http.Error(w, "Invalid token", http.StatusUnauthorized)
|
|
return
|
|
}
|
|
|
|
next(w, r)
|
|
}
|
|
}
|
|
|
|
// 修改处理器
|
|
func (h *ProxyHandler) MetricsPageHandler(w http.ResponseWriter, r *http.Request) {
|
|
w.Header().Set("Content-Type", "text/html; charset=utf-8")
|
|
w.Write([]byte(loginTemplate))
|
|
}
|
|
|
|
func (h *ProxyHandler) MetricsDashboardHandler(w http.ResponseWriter, r *http.Request) {
|
|
w.Header().Set("Content-Type", "text/html; charset=utf-8")
|
|
w.Write([]byte(metricsTemplate))
|
|
}
|
|
|
|
func (h *ProxyHandler) MetricsAuthHandler(w http.ResponseWriter, r *http.Request) {
|
|
if r.Method != http.MethodPost {
|
|
http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
|
|
var req struct {
|
|
Password string `json:"password"`
|
|
}
|
|
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
|
|
http.Error(w, "Invalid request", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
if req.Password != h.config.Metrics.Password {
|
|
http.Error(w, "Invalid password", http.StatusUnauthorized)
|
|
return
|
|
}
|
|
|
|
token := h.auth.generateToken()
|
|
h.auth.addToken(token, time.Duration(h.config.Metrics.TokenExpiry)*time.Second)
|
|
|
|
w.Header().Set("Content-Type", "application/json")
|
|
json.NewEncoder(w).Encode(map[string]string{
|
|
"token": token,
|
|
})
|
|
}
|
|
|
|
// 添加辅助函数
|
|
func getErrorRate(errors, total int64) float64 {
|
|
if total == 0 {
|
|
return 0
|
|
}
|
|
return float64(errors) / float64(total)
|
|
}
|
|
|
|
func getRecentRequests(h *ProxyHandler) []RequestLog {
|
|
var recentReqs []RequestLog
|
|
h.recentRequests.RLock()
|
|
defer h.recentRequests.RUnlock()
|
|
|
|
cursor := h.recentRequests.cursor.Load()
|
|
for i := 0; i < 10; i++ {
|
|
idx := (cursor - int64(i) + 1000) % 1000
|
|
if h.recentRequests.items[idx] != nil {
|
|
recentReqs = append(recentReqs, *h.recentRequests.items[idx])
|
|
}
|
|
}
|
|
return recentReqs
|
|
}
|
|
|
|
// 添加辅助函数
|
|
func max(a, b float64) float64 {
|
|
if a > b {
|
|
return a
|
|
}
|
|
return b
|
|
}
|