Add error logging in middleware

pkg/api/middleware/validate.go

@@ -3,6 +3,7 @@ package middleware
 import (
 	"git.itzana.me/strafesnet/go-grpc/dev"
 	"github.com/gin-gonic/gin"
+	log "github.com/sirupsen/logrus"
 	"google.golang.org/grpc"
 	"net/http"
 	"strconv"
@@ -40,6 +41,9 @@ func ValidateRequest(service, permission string, conn *grpc.ClientConn) gin.Hand
 		if err != nil {
 			ctx.JSON(http.StatusInternalServerError, gin.H{"error": ErrMsgInternalServer})
 			ctx.Abort()
+			log.WithError(err).Error(
+				"failed to validate API key",
+			)
 			return
 		}