/** * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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 org.apache.cassandra.locator; import java.net.InetAddress; /** * A simple endpoint snitch implementation that assumes datacenter and rack information is encoded * in the 2nd and 3rd octets of the ip address, respectively. */ public class RackInferringSnitch extends AbstractNetworkTopologySnitch { public String getRack(InetAddress endpoint) { return Byte.toString(endpoint.getAddress()[2]); } public String getDatacenter(InetAddress endpoint) { return Byte.toString(endpoint.getAddress()[1]); } }