/** * Copyright 2015 Netflix, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.netflix.spectator.spark; import com.netflix.spectator.api.Id; /** * Maps a name used for the metrics registry into an id for spectator. */ public interface NameFunction { /** * Return the id corresponding to the name, or null if the name cannot be mapped and the value * should be dropped. */ Id apply(String name); }