杭州明婳科技
18e4f7e891
- ServerConfig 新增 Host 字段：空=监听所有接口(兼容)，设值=绑定指定地址 (127.0.0.1 仅本机 / 内网IP 绑定指定网卡)，避免生产暴露 0.0.0.0 - app.go 启动地址改 host:port，日志区分"所有接口"/指定地址 - 面向用户/调用的文案统一中文： - middleware/recover.go: "Panic recovered"→"panic 已恢复"，"Panic: %v"→"服务器内部错误: %v" - middleware/logger.go: 5 处日志消息改中文 - middleware/metrics.go: 3 个 Prometheus Help 改中文 - app.go/database/manager.go/logger.go: 英文 error 改中文 - 保留英文：JSON 协议字段名、Prometheus metric Name、MySQL 错误串匹配、技术专有名词 - CLI 模板与 example 配置加 host 注释 Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
65 lines
1.7 KiB
Go
65 lines
1.7 KiB
Go
package middleware
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import (
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"strconv"
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"time"
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"github.com/gin-gonic/gin"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/promauto"
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)
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// #18 Prometheus 指标。三个标配：
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// - http_requests_total: 请求计数（按 method/route/status 维度）
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// - http_request_duration_seconds: 请求耗时直方图（按 method/route 维度）
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// - http_requests_in_flight: 当前在飞请求数
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var (
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httpRequestsTotal = promauto.NewCounterVec(
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prometheus.CounterOpts{
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Name: "http_requests_total",
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Help: "HTTP 请求总数。",
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},
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[]string{"method", "route", "status"},
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)
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httpRequestDuration = promauto.NewHistogramVec(
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prometheus.HistogramOpts{
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Name: "http_request_duration_seconds",
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Help: "HTTP 请求耗时（秒）。",
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Buckets: prometheus.DefBuckets,
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},
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[]string{"method", "route"},
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)
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httpRequestsInFlight = promauto.NewGauge(
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prometheus.GaugeOpts{
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Name: "http_requests_in_flight",
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Help: "正在处理的 HTTP 请求数。",
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},
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)
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)
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// Metrics Prometheus 指标中间件（#18）。记录请求计数、耗时、在飞数。
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// route 标签用 c.FullPath()（路由模板，如 /api/v1/users/:id），避免高基数。
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func Metrics() gin.HandlerFunc {
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return func(c *gin.Context) {
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httpRequestsInFlight.Inc()
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start := time.Now()
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c.Next()
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httpRequestsInFlight.Dec()
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elapsed := time.Since(start).Seconds()
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status := strconv.Itoa(c.Writer.Status())
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route := c.FullPath()
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if route == "" {
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route = "not_found"
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}
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method := c.Request.Method
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httpRequestsTotal.WithLabelValues(method, route, status).Inc()
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httpRequestDuration.WithLabelValues(method, route).Observe(elapsed)
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}
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}
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