94 lines
3.3 KiB
Go
94 lines
3.3 KiB
Go
package main
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import (
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"context"
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"fmt"
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netHttp "net/http"
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"net/http/httputil"
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"net/url"
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"strings"
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_ "gitea.com/red-future/common/config"
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"gitea.com/red-future/common/consul"
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"gitea.com/red-future/common/http"
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"gitea.com/red-future/common/middleware"
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_ "gitea.com/red-future/common/swagger"
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"gitea.com/red-future/common/utils"
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"github.com/gogf/gf/v2/frame/g"
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"github.com/gogf/gf/v2/net/ghttp"
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"github.com/gogf/gf/v2/util/gconv"
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)
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func StartServerProxy() {
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// 初始化Sentinel熔断器
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err := middleware.InitCircuitBreaker()
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if err != nil {
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g.Log().Errorf(context.Background(), "熔断器初始化失败: %v", err)
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panic("熔断器初始化失败")
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}
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// 绑定中间件：CORS -> IP限流 -> 用户限流 -> 熔断降级 -> 服务限流 -> 全局限流
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http.Httpserver.BindMiddlewareDefault(
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ghttp.MiddlewareCORS,
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middleware.IPLimiter, // IP限流(防DDoS)
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middleware.UserLimiter, // 用户限流(防止单用户滥用)
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middleware.CircuitBreakerMiddleware, // ⭐ 熔断降级(保护后端服务)
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middleware.ServiceLimiter, // 服务限流(保护微服务)
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middleware.GlobalLimiter, // Redis全局限流(分布式支持)
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) //使用默认http返回结构
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// 熔断器健康检查接口
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http.Httpserver.BindHandler("/circuit-breaker/health", middleware.CircuitBreakerHealthCheckHandler)
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// 熔断器手动重置接口（仅限管理后台调用）
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http.Httpserver.BindHandler("/circuit-breaker/reset", middleware.CircuitBreakerResetHandler)
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// 熔断器配置重载接口
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http.Httpserver.BindHandler("/circuit-breaker/reload", middleware.CircuitBreakerReloadHandler)
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http.Httpserver.BindHandler("/*", func(r *ghttp.Request) {
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g.Log().Debugf(r.GetCtx(), "url:%s", r.RequestURI)
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serverName := strings.Split(r.RequestURI, "/")[1]
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instanceAddr, err := consul.GetInstanceAddr(r.GetCtx(), serverName)
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if err != nil {
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g.Log().Errorf(r.GetCtx(), "serverName:%s不可用", serverName)
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r.Response.Status = 503
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r.Response.WriteJsonExit(map[string]interface{}{
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"success": false,
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"code": 503,
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"message": fmt.Sprintf("服务 '%s' 暂时不可用", serverName),
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})
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return
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}
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r.Request.URL.Path = strings.Replace(r.Request.URL.Path, fmt.Sprintf("%s/", serverName), "", 1)
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r.MakeBodyRepeatableRead(false)
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u, _ := url.Parse(fmt.Sprintf("%s://%s", "http", instanceAddr))
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proxy := httputil.NewSingleHostReverseProxy(u)
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proxy.ErrorHandler = func(writer netHttp.ResponseWriter, request *netHttp.Request, e error) {
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writer.WriteHeader(netHttp.StatusBadGateway)
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}
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if !strings.Contains(r.RequestURI, "/swagger") && !strings.Contains(r.RequestURI, "/pub/captcha/get") && !strings.Contains(r.RequestURI, "/login") && !strings.Contains(r.RequestURI, "/web/socket/") {
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user, err := utils.GetUserInfo(r.GetCtx())
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if err != nil {
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g.Log().Errorf(r.GetCtx(), "获取用户信息失败: %v", err)
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r.Response.Status = 500
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r.Response.WriteJsonExit(map[string]interface{}{
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"success": false,
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"code": 500,
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"message": "获取用户信息失败",
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})
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return
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}
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// 将用户信息通过 Header 传递给下游服务
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r.Request.Header.Set("X-User-Info", gconv.String(&user))
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}
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proxy.ServeHTTP(r.Response.Writer, r.Request)
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})
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}
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func main() {
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StartServerProxy()
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http.Httpserver.Run()
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// select {}
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}
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