refactor: improve error interceptor

internal/config.go

@@ -18,6 +18,7 @@ limitations under the License.
 import (
 	"fmt"
 	"github.com/jkaninda/goma-gateway/internal/middleware"
+	error_interceptor "github.com/jkaninda/goma-gateway/pkg/error-interceptor"
 	"github.com/jkaninda/goma-gateway/pkg/logger"
 	"github.com/jkaninda/goma-gateway/util"
 	"golang.org/x/oauth2"
@@ -27,6 +28,7 @@ import (
 	"golang.org/x/oauth2/gitlab"
 	"golang.org/x/oauth2/google"
 	"gopkg.in/yaml.v3"
+	"net/http"
 	"os"
 )
 
@@ -180,11 +182,24 @@ func initConfig(configFile string) error {
 					Middlewares: []string{"basic-auth", "api-forbidden-paths"},
 				},
 				{
-					Path:            "/",
-					Name:            "Hostname and load balancing example",
-					Hosts:           []string{"example.com", "example.localhost"},
-					InterceptErrors: []int{404, 405, 500},
-					RateLimit:       60,
+					Path:  "/",
+					Name:  "Hostname and load balancing example",
+					Hosts: []string{"example.com", "example.localhost"},
+					//InterceptErrors: []int{404, 405, 500},
+					ErrorInterceptor: error_interceptor.ErrorInterceptor{
+						ContentType: applicationJson,
+						Errors: []error_interceptor.Error{
+							{
+								Code:    http.StatusUnauthorized,
+								Message: http.StatusText(http.StatusUnauthorized),
+							},
+							{
+								Code:    http.StatusInternalServerError,
+								Message: http.StatusText(http.StatusInternalServerError),
+							},
+						},
+					},
+					RateLimit: 60,
 					Backends: []string{
 						"https://example.com",
 						"https://example2.com",