mirror of
https://github.com/woodchen-ink/proxy-go.git
synced 2025-07-18 08:31:55 +08:00
460 lines
14 KiB
Go
460 lines
14 KiB
Go
package handler
|
|
|
|
import (
|
|
"encoding/json"
|
|
"fmt"
|
|
"net/http"
|
|
"runtime"
|
|
"strings"
|
|
"sync/atomic"
|
|
"time"
|
|
)
|
|
|
|
type Metrics struct {
|
|
// 基础指标
|
|
Uptime string `json:"uptime"`
|
|
ActiveRequests int64 `json:"active_requests"`
|
|
TotalRequests int64 `json:"total_requests"`
|
|
TotalErrors int64 `json:"total_errors"`
|
|
ErrorRate float64 `json:"error_rate"`
|
|
|
|
// 系统指标
|
|
NumGoroutine int `json:"num_goroutine"`
|
|
MemoryUsage string `json:"memory_usage"`
|
|
|
|
// 性能指标
|
|
AverageResponseTime string `json:"avg_response_time"`
|
|
RequestsPerSecond float64 `json:"requests_per_second"`
|
|
|
|
// 新增字段
|
|
TotalBytes int64 `json:"total_bytes"`
|
|
BytesPerSecond float64 `json:"bytes_per_second"`
|
|
StatusCodeStats map[string]int64 `json:"status_code_stats"`
|
|
LatencyPercentiles map[string]float64 `json:"latency_percentiles"`
|
|
TopPaths []PathMetrics `json:"top_paths"`
|
|
RecentRequests []RequestLog `json:"recent_requests"`
|
|
}
|
|
|
|
type PathMetrics struct {
|
|
Path string `json:"path"`
|
|
RequestCount int64 `json:"request_count"`
|
|
ErrorCount int64 `json:"error_count"`
|
|
AvgLatency string `json:"avg_latency"`
|
|
BytesTransferred int64 `json:"bytes_transferred"`
|
|
}
|
|
|
|
// 添加格式化字节的辅助函数
|
|
func formatBytes(bytes uint64) string {
|
|
const (
|
|
MB = 1024 * 1024
|
|
KB = 1024
|
|
)
|
|
|
|
switch {
|
|
case bytes >= MB:
|
|
return fmt.Sprintf("%.2f MB", float64(bytes)/MB)
|
|
case bytes >= KB:
|
|
return fmt.Sprintf("%.2f KB", float64(bytes)/KB)
|
|
default:
|
|
return fmt.Sprintf("%d Bytes", bytes)
|
|
}
|
|
}
|
|
|
|
func (h *ProxyHandler) MetricsHandler(w http.ResponseWriter, r *http.Request) {
|
|
var m runtime.MemStats
|
|
runtime.ReadMemStats(&m)
|
|
|
|
// 获取状态码统计
|
|
statusStats := make(map[string]int64)
|
|
for i, v := range h.metrics.statusStats {
|
|
statusStats[fmt.Sprintf("%dxx", i+1)] = v.Load()
|
|
}
|
|
|
|
// 获取Top 10路径统计
|
|
var pathMetrics []PathMetrics
|
|
h.metrics.pathStats.Range(func(key, value interface{}) bool {
|
|
stats := value.(*PathStats)
|
|
pathMetrics = append(pathMetrics, PathMetrics{
|
|
Path: key.(string),
|
|
RequestCount: stats.requests.Load(),
|
|
ErrorCount: stats.errors.Load(),
|
|
AvgLatency: formatDuration(time.Duration(stats.latencySum.Load() / stats.requests.Load())),
|
|
BytesTransferred: stats.bytes.Load(),
|
|
})
|
|
return len(pathMetrics) < 10
|
|
})
|
|
|
|
// 获取最近的请求
|
|
var recentReqs []RequestLog
|
|
h.recentRequests.RLock()
|
|
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])
|
|
}
|
|
}
|
|
h.recentRequests.RUnlock()
|
|
|
|
metrics := Metrics{
|
|
Uptime: time.Since(h.startTime).String(),
|
|
ActiveRequests: atomic.LoadInt64(&h.metrics.activeRequests),
|
|
TotalRequests: atomic.LoadInt64(&h.metrics.totalRequests),
|
|
TotalErrors: atomic.LoadInt64(&h.metrics.totalErrors),
|
|
ErrorRate: float64(h.metrics.totalErrors) / float64(h.metrics.totalRequests),
|
|
NumGoroutine: runtime.NumGoroutine(),
|
|
MemoryUsage: formatBytes(m.Alloc),
|
|
TotalBytes: h.metrics.totalBytes.Load(),
|
|
BytesPerSecond: float64(h.metrics.totalBytes.Load()) / time.Since(h.startTime).Seconds(),
|
|
StatusCodeStats: statusStats,
|
|
TopPaths: pathMetrics,
|
|
RecentRequests: recentReqs,
|
|
}
|
|
|
|
w.Header().Set("Content-Type", "application/json")
|
|
json.NewEncoder(w).Encode(metrics)
|
|
}
|
|
|
|
// 添加格式化时间的辅助函数
|
|
func formatDuration(d time.Duration) string {
|
|
if d < time.Millisecond {
|
|
return fmt.Sprintf("%.2f μs", float64(d.Microseconds()))
|
|
}
|
|
if d < time.Second {
|
|
return fmt.Sprintf("%.2f ms", float64(d.Milliseconds()))
|
|
}
|
|
return fmt.Sprintf("%.2f s", d.Seconds())
|
|
}
|
|
|
|
// 修改模板,添加登录页面
|
|
var loginTemplate = `
|
|
<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<title>Proxy-Go Metrics Login</title>
|
|
<meta charset="UTF-8">
|
|
<style>
|
|
body {
|
|
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
|
|
display: flex;
|
|
justify-content: center;
|
|
align-items: center;
|
|
height: 100vh;
|
|
margin: 0;
|
|
background: #f5f5f5;
|
|
}
|
|
.login-card {
|
|
background: white;
|
|
padding: 30px;
|
|
border-radius: 8px;
|
|
box-shadow: 0 2px 4px rgba(0,0,0,0.1);
|
|
width: 300px;
|
|
}
|
|
.login-title {
|
|
text-align: center;
|
|
margin-bottom: 20px;
|
|
color: #333;
|
|
}
|
|
.input-group {
|
|
margin-bottom: 15px;
|
|
}
|
|
input {
|
|
width: 100%;
|
|
padding: 8px;
|
|
border: 1px solid #ddd;
|
|
border-radius: 4px;
|
|
box-sizing: border-box;
|
|
}
|
|
button {
|
|
width: 100%;
|
|
padding: 10px;
|
|
background: #4CAF50;
|
|
color: white;
|
|
border: none;
|
|
border-radius: 4px;
|
|
cursor: pointer;
|
|
}
|
|
button:hover {
|
|
background: #45a049;
|
|
}
|
|
.error {
|
|
color: red;
|
|
text-align: center;
|
|
margin-bottom: 15px;
|
|
display: none;
|
|
}
|
|
</style>
|
|
</head>
|
|
<body>
|
|
<div class="login-card">
|
|
<h2 class="login-title">Metrics Login</h2>
|
|
<div id="error" class="error">密码错误</div>
|
|
<div class="input-group">
|
|
<input type="password" id="password" placeholder="请输入密码">
|
|
</div>
|
|
<button onclick="login()">登录</button>
|
|
</div>
|
|
|
|
<script>
|
|
function login() {
|
|
const password = document.getElementById('password').value;
|
|
fetch('/metrics/auth', {
|
|
method: 'POST',
|
|
headers: {
|
|
'Content-Type': 'application/json',
|
|
},
|
|
body: JSON.stringify({password: password})
|
|
})
|
|
.then(response => {
|
|
if (response.ok) {
|
|
// 登录成功,保存token并跳转
|
|
response.json().then(data => {
|
|
localStorage.setItem('metricsToken', data.token);
|
|
window.location.href = '/metrics/dashboard';
|
|
});
|
|
} else {
|
|
// 显示错误信息
|
|
document.getElementById('error').style.display = 'block';
|
|
}
|
|
})
|
|
.catch(error => {
|
|
console.error('Error:', error);
|
|
document.getElementById('error').style.display = 'block';
|
|
});
|
|
}
|
|
</script>
|
|
</body>
|
|
</html>
|
|
`
|
|
|
|
// 修改原有的 metricsTemplate,添加 token 检查
|
|
var metricsTemplate = `
|
|
<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<title>Proxy-Go Metrics</title>
|
|
<meta charset="UTF-8">
|
|
<style>
|
|
body {
|
|
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
|
|
max-width: 1200px;
|
|
margin: 0 auto;
|
|
padding: 20px;
|
|
background: #f5f5f5;
|
|
}
|
|
.card {
|
|
background: white;
|
|
border-radius: 8px;
|
|
padding: 20px;
|
|
margin-bottom: 20px;
|
|
box-shadow: 0 2px 4px rgba(0,0,0,0.1);
|
|
}
|
|
.metric {
|
|
display: flex;
|
|
justify-content: space-between;
|
|
padding: 10px 0;
|
|
border-bottom: 1px solid #eee;
|
|
}
|
|
.metric:last-child {
|
|
border-bottom: none;
|
|
}
|
|
.metric-label {
|
|
color: #666;
|
|
}
|
|
.metric-value {
|
|
font-weight: bold;
|
|
color: #333;
|
|
}
|
|
h1 {
|
|
color: #333;
|
|
margin-bottom: 30px;
|
|
}
|
|
h2 {
|
|
color: #666;
|
|
margin: 0 0 15px 0;
|
|
}
|
|
.refresh {
|
|
position: fixed;
|
|
top: 20px;
|
|
right: 20px;
|
|
padding: 10px 20px;
|
|
background: #4CAF50;
|
|
color: white;
|
|
border: none;
|
|
border-radius: 4px;
|
|
cursor: pointer;
|
|
}
|
|
.refresh:hover {
|
|
background: #45a049;
|
|
}
|
|
#lastUpdate {
|
|
position: fixed;
|
|
top: 20px;
|
|
right: 140px;
|
|
color: #666;
|
|
}
|
|
</style>
|
|
</head>
|
|
<body>
|
|
<h1>Proxy-Go Metrics</h1>
|
|
|
|
<div class="card">
|
|
<h2>基础指标</h2>
|
|
<div class="metric">
|
|
<span class="metric-label">运行时间</span>
|
|
<span class="metric-value" id="uptime"></span>
|
|
</div>
|
|
<div class="metric">
|
|
<span class="metric-label">当前活跃请求</span>
|
|
<span class="metric-value" id="activeRequests"></span>
|
|
</div>
|
|
<div class="metric">
|
|
<span class="metric-label">总请求数</span>
|
|
<span class="metric-value" id="totalRequests"></span>
|
|
</div>
|
|
<div class="metric">
|
|
<span class="metric-label">错误数</span>
|
|
<span class="metric-value" id="totalErrors"></span>
|
|
</div>
|
|
<div class="metric">
|
|
<span class="metric-label">错误率</span>
|
|
<span class="metric-value" id="errorRate"></span>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="card">
|
|
<h2>系统指标</h2>
|
|
<div class="metric">
|
|
<span class="metric-label">Goroutine数量</span>
|
|
<span class="metric-value" id="numGoroutine"></span>
|
|
</div>
|
|
<div class="metric">
|
|
<span class="metric-label">内存使用</span>
|
|
<span class="metric-value" id="memoryUsage"></span>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="card">
|
|
<h2>性能指标</h2>
|
|
<div class="metric">
|
|
<span class="metric-label">平均响应时间</span>
|
|
<span class="metric-value" id="avgResponseTime"></span>
|
|
</div>
|
|
<div class="metric">
|
|
<span class="metric-label">每秒请求数</span>
|
|
<span class="metric-value" id="requestsPerSecond"></span>
|
|
</div>
|
|
</div>
|
|
|
|
<span id="lastUpdate"></span>
|
|
<button class="refresh" onclick="refreshMetrics()">刷新</button>
|
|
|
|
<script>
|
|
// 检查登录状态
|
|
const token = localStorage.getItem('metricsToken');
|
|
if (!token) {
|
|
window.location.href = '/metrics/ui';
|
|
}
|
|
|
|
function refreshMetrics() {
|
|
fetch('/metrics', {
|
|
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));
|
|
}
|
|
|
|
function updateMetrics(data) {
|
|
document.getElementById('uptime').textContent = data.uptime;
|
|
document.getElementById('activeRequests').textContent = data.active_requests;
|
|
document.getElementById('totalRequests').textContent = data.total_requests;
|
|
document.getElementById('totalErrors').textContent = data.total_errors;
|
|
document.getElementById('errorRate').textContent = (data.error_rate * 100).toFixed(2) + '%';
|
|
document.getElementById('numGoroutine').textContent = data.num_goroutine;
|
|
document.getElementById('memoryUsage').textContent = data.memory_usage;
|
|
document.getElementById('avgResponseTime').textContent = data.avg_response_time;
|
|
document.getElementById('requestsPerSecond').textContent = data.requests_per_second.toFixed(2);
|
|
document.getElementById('lastUpdate').textContent = '最后更新: ' + new Date().toLocaleTimeString();
|
|
}
|
|
|
|
// 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,
|
|
})
|
|
}
|