restructured the project to comply community guideline, for others check release note

internal/api/v1/checkhealth.go

@@ -0,0 +1,42 @@
+package v1
+
+import (
+	"fmt"
+	"net/http"
+	"strings"
+
+	U "github.com/yusing/go-proxy/internal/api/v1/utils"
+	"github.com/yusing/go-proxy/internal/config"
+	R "github.com/yusing/go-proxy/internal/route"
+)
+
+func CheckHealth(cfg *config.Config, w http.ResponseWriter, r *http.Request) {
+	target := r.FormValue("target")
+	if target == "" {
+		U.HandleErr(w, r, U.ErrMissingKey("target"), http.StatusBadRequest)
+		return
+	}
+
+	var ok bool
+	route := cfg.FindRoute(target)
+
+	switch {
+	case route == nil:
+		U.HandleErr(w, r, U.ErrNotFound("target", target), http.StatusNotFound)
+		return
+	case route.Type() == R.RouteTypeReverseProxy:
+		ok = U.IsSiteHealthy(route.URL().String())
+	case route.Type() == R.RouteTypeStream:
+		entry := route.Entry()
+		ok = U.IsStreamHealthy(
+			strings.Split(entry.Scheme, ":")[1], // target scheme
+			fmt.Sprintf("%s:%v", entry.Host, strings.Split(entry.Port, ":")[1]),
+		)
+	}
+
+	if ok {
+		w.WriteHeader(http.StatusOK)
+	} else {
+		w.WriteHeader(http.StatusRequestTimeout)
+	}
+}