| /* |
| * 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.distributed.impl; |
| |
| import java.net.InetAddress; |
| import java.net.InetSocketAddress; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import org.apache.cassandra.config.Config; |
| import org.apache.cassandra.db.SystemKeyspace; |
| import org.apache.cassandra.distributed.shared.NetworkTopology; |
| import org.apache.cassandra.gms.ApplicationState; |
| import org.apache.cassandra.gms.EndpointState; |
| import org.apache.cassandra.gms.Gossiper; |
| import org.apache.cassandra.locator.AbstractNetworkTopologySnitch; |
| import org.apache.cassandra.locator.InetAddressAndPort; |
| import org.apache.cassandra.service.StorageService; |
| import org.apache.cassandra.utils.FBUtilities; |
| |
| public class DistributedTestSnitch extends AbstractNetworkTopologySnitch |
| { |
| private static NetworkTopology mapping = null; |
| private static final Map<InetAddressAndPort, InetSocketAddress> cache = new ConcurrentHashMap<>(); |
| private static final Map<InetSocketAddress, InetAddressAndPort> cacheInverse = new ConcurrentHashMap<>(); |
| |
| public static InetAddressAndPort toCassandraInetAddressAndPort(InetSocketAddress addressAndPort) |
| { |
| InetAddressAndPort m = cacheInverse.get(addressAndPort); |
| if (m == null) |
| { |
| m = InetAddressAndPort.getByAddressOverrideDefaults(addressAndPort.getAddress(), addressAndPort.getPort()); |
| cache.put(m, addressAndPort); |
| } |
| return m; |
| } |
| |
| public static InetSocketAddress fromCassandraInetAddressAndPort(InetAddressAndPort addressAndPort) |
| { |
| InetSocketAddress m = cache.get(addressAndPort); |
| if (m == null) |
| { |
| m = NetworkTopology.addressAndPort(addressAndPort.getAddress(), addressAndPort.getPort()); |
| cache.put(addressAndPort, m); |
| } |
| return m; |
| } |
| |
| private Map<InetAddressAndPort, Map<String, String>> savedEndpoints; |
| private static final String DEFAULT_DC = "UNKNOWN_DC"; |
| private static final String DEFAULT_RACK = "UNKNOWN_RACK"; |
| |
| public String getRack(InetAddress endpoint) |
| { |
| int storage_port = Config.getOverrideLoadConfig().get().storage_port; |
| return getRack(InetAddressAndPort.getByAddressOverrideDefaults(endpoint, storage_port)); |
| } |
| |
| public String getRack(InetAddressAndPort endpoint) |
| { |
| assert mapping != null : "network topology must be assigned before using snitch"; |
| return maybeGetFromEndpointState(mapping.localRack(fromCassandraInetAddressAndPort(endpoint)), endpoint, ApplicationState.RACK, DEFAULT_RACK); |
| } |
| |
| public String getDatacenter(InetAddress endpoint) |
| { |
| int storage_port = Config.getOverrideLoadConfig().get().storage_port; |
| return getDatacenter(InetAddressAndPort.getByAddressOverrideDefaults(endpoint, storage_port)); |
| } |
| |
| public String getDatacenter(InetAddressAndPort endpoint) |
| { |
| assert mapping != null : "network topology must be assigned before using snitch"; |
| return maybeGetFromEndpointState(mapping.localDC(fromCassandraInetAddressAndPort(endpoint)), endpoint, ApplicationState.DC, DEFAULT_DC); |
| } |
| |
| // Here, the logic is slightly different from what we have in GossipingPropertyFileSnitch since we have a different |
| // goal. Passed argument (topology that was set on the node) overrides anything that is passed elsewhere. |
| private String maybeGetFromEndpointState(String current, InetAddressAndPort endpoint, ApplicationState state, String defaultValue) |
| { |
| if (current != null) |
| return current; |
| |
| EndpointState epState = Gossiper.instance.getEndpointStateForEndpoint(endpoint); |
| if (epState == null || epState.getApplicationState(state) == null) |
| { |
| if (savedEndpoints == null) |
| savedEndpoints = SystemKeyspace.loadDcRackInfo(); |
| if (savedEndpoints.containsKey(endpoint)) |
| return savedEndpoints.get(endpoint).get("data_center"); |
| |
| return defaultValue; |
| } |
| |
| return epState.getApplicationState(state).value; |
| } |
| |
| static void assign(NetworkTopology newMapping) |
| { |
| mapping = new NetworkTopology(newMapping); |
| } |
| |
| public void gossiperStarting() |
| { |
| super.gossiperStarting(); |
| |
| Gossiper.instance.addLocalApplicationState(ApplicationState.INTERNAL_ADDRESS_AND_PORT, |
| StorageService.instance.valueFactory.internalAddressAndPort(FBUtilities.getLocalAddressAndPort())); |
| Gossiper.instance.addLocalApplicationState(ApplicationState.INTERNAL_IP, |
| StorageService.instance.valueFactory.internalIP(FBUtilities.getJustLocalAddress())); |
| } |
| } |