fixed middleware implementation, added middleware tracing for easier debug

internal/api/v1/query/query.go

@@ -0,0 +1,69 @@
+package query
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+
+	v1 "github.com/yusing/go-proxy/internal/api/v1"
+	U "github.com/yusing/go-proxy/internal/api/v1/utils"
+	"github.com/yusing/go-proxy/internal/common"
+	E "github.com/yusing/go-proxy/internal/error"
+	"github.com/yusing/go-proxy/internal/net/http/middleware"
+)
+
+func ReloadServer() E.NestedError {
+	resp, err := U.Post(fmt.Sprintf("%s/v1/reload", common.APIHTTPURL), "", nil)
+	if err != nil {
+		return E.From(err)
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != http.StatusOK {
+		failure := E.Failure("server reload").Extraf("status code: %v", resp.StatusCode)
+		b, err := io.ReadAll(resp.Body)
+		if err != nil {
+			return failure.Extraf("unable to read response body: %s", err)
+		}
+		reloadErr, ok := E.FromJSON(b)
+		if ok {
+			return E.Join("reload success, but server returned error", reloadErr)
+		}
+		return failure.Extraf("unable to read response body")
+	}
+	return nil
+}
+
+func ListRoutes() (map[string]map[string]any, E.NestedError) {
+	resp, err := U.Get(fmt.Sprintf("%s/v1/list/%s", common.APIHTTPURL, v1.ListRoutes))
+	if err != nil {
+		return nil, E.From(err)
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != http.StatusOK {
+		return nil, E.Failure("list routes").Extraf("status code: %v", resp.StatusCode)
+	}
+	var routes map[string]map[string]any
+	err = json.NewDecoder(resp.Body).Decode(&routes)
+	if err != nil {
+		return nil, E.From(err)
+	}
+	return routes, nil
+}
+
+func ListMiddlewareTraces() (middleware.Traces, E.NestedError) {
+	resp, err := U.Get(fmt.Sprintf("%s/v1/list/%s", common.APIHTTPURL, v1.ListMiddlewareTrace))
+	if err != nil {
+		return nil, E.From(err)
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != http.StatusOK {
+		return nil, E.Failure("list middleware trace").Extraf("status code: %v", resp.StatusCode)
+	}
+	var traces middleware.Traces
+	err = json.NewDecoder(resp.Body).Decode(&traces)
+	if err != nil {
+		return nil, E.From(err)
+	}
+	return traces, nil
+}