实现基础的统计指标

internal/nodes/http_request_metrics.go

@@ -0,0 +1,58 @@
+// Copyright 2021 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package nodes
+
+import (
+	"github.com/TeaOSLab/EdgeCommon/pkg/serverconfigs"
+	"github.com/TeaOSLab/EdgeNode/internal/metrics"
+)
+
+// 指标统计 - 响应
+// 只需要在结束时调用指标进行统计
+func (this *HTTPRequest) doMetricsResponse() {
+	metrics.SharedManager.Add(this)
+}
+
+func (this *HTTPRequest) MetricKey(key string) string {
+	return this.Format(key)
+}
+
+func (this *HTTPRequest) MetricValue(value string) (result int64, ok bool) {
+	// TODO 需要忽略健康检查的请求，但是同时也要防止攻击者模拟健康检查
+	switch value {
+	case "${countRequest}":
+		return 1, true
+	case "${countTrafficOut}":
+		// 这里不包括Header长度
+		return this.writer.SentBodyBytes(), true
+	case "${countTrafficIn}":
+		var hl int64 = 0 // header length
+		for k, values := range this.RawReq.Header {
+			for _, v := range values {
+				hl += int64(len(k) + len(v) + 2 /** k: v  **/)
+			}
+		}
+		return this.RawReq.ContentLength + hl, true
+	case "${countConnection}":
+		metricNewConnMapLocker.Lock()
+		_, ok := metricNewConnMap[this.RawReq.RemoteAddr]
+		if ok {
+			delete(metricNewConnMap, this.RawReq.RemoteAddr)
+		}
+		metricNewConnMapLocker.Unlock()
+		if ok {
+			return 1, true
+		} else {
+			return 0, false
+		}
+	}
+	return 0, false
+}
+
+func (this *HTTPRequest) MetricServerId() int64 {
+	return this.Server.Id
+}
+
+func (this *HTTPRequest) MetricCategory() string {
+	return serverconfigs.MetricItemCategoryHTTP
+}