refactoring into utils method

Author: pranavmishradatabricks

internal/cortex/frontend/transport/handler.go

@@ -173,11 +173,14 @@ func (f *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		writeError(w, err)
 		queryString = f.parseRequestQueryString(r, buf)
 
-		// Check if caching is enabled.
-		if f.failedQueryCache != nil {
-			success, message := f.failedQueryCache.UpdateFailedQueryCache(err, queryExpressionNormalized, queryExpressionRangeLength, f.failedQueryCache.LruCache)
-			if success {
-				level.Info(util_log.WithContext(r.Context(), f.log)).Log(message)
+		// Try to update cache.
+		success, message := f.failedQueryCache.CallUpdateFailedQueryCache(err, queryExpressionNormalized, queryExpressionRangeLength)
+
+		if success {
+			level.Info(util_log.WithContext(r.Context(), f.log)).Log(message)
+		} else {
+			if message == "Failed query cache is not enabled" {
+				level.Debug(util_log.WithContext(r.Context(), f.log)).Log(message)
 			} else {
 				level.Error(util_log.WithContext(r.Context(), f.log)).Log(message)
 			}

internal/cortex/frontend/transport/utils/utils.go

@@ -139,3 +139,11 @@ func GetQueryRangeSeconds(query url.Values) int {
 func (f *FailedQueryCache) NormalizeQueryString(query url.Values) string {
 	return f.regex.ReplaceAllString(query.Get("query"), " ")
 }
+
+func (f *FailedQueryCache) CallUpdateFailedQueryCache(err error, queryExpressionNormalized string, queryExpressionRangeLength int) (bool, string) {
+	if f == nil {
+		return false, "Failed query cache is not enabled"
+	}
+	success, message := f.UpdateFailedQueryCache(err, queryExpressionNormalized, queryExpressionRangeLength, f.LruCache)
+	return success, message
+}