| /* |
| * 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.io.IOException; |
| import java.net.InetAddress; |
| import java.net.UnknownHostException; |
| |
| import org.apache.cassandra.exceptions.ConfigurationException; |
| import org.apache.cassandra.config.DatabaseDescriptor; |
| import org.apache.cassandra.gms.ApplicationState; |
| import org.apache.cassandra.gms.Gossiper; |
| import org.apache.cassandra.service.StorageService; |
| |
| /** |
| * 1) Snitch will automatically set the public IP by querying the AWS API |
| * |
| * 2) Snitch will set the private IP as a Gossip application state. |
| * |
| * 3) Uses a helper class that implements IESCS and will reset the public IP connection if it is within the |
| * same region to communicate via private IP. |
| * |
| * Operational: All the nodes in this cluster needs to be able to (modify the |
| * Security group settings in AWS) communicate via Public IP's. |
| */ |
| public class Ec2MultiRegionSnitch extends Ec2Snitch |
| { |
| private static final String PUBLIC_IP_QUERY_URL = "http://169.254.169.254/latest/meta-data/public-ipv4"; |
| private static final String PRIVATE_IP_QUERY_URL = "http://169.254.169.254/latest/meta-data/local-ipv4"; |
| private final String localPrivateAddress; |
| |
| public Ec2MultiRegionSnitch() throws IOException, ConfigurationException |
| { |
| super(); |
| InetAddress localPublicAddress = InetAddress.getByName(awsApiCall(PUBLIC_IP_QUERY_URL)); |
| logger.info("EC2Snitch using publicIP as identifier: {}", localPublicAddress); |
| localPrivateAddress = awsApiCall(PRIVATE_IP_QUERY_URL); |
| // use the Public IP to broadcast Address to other nodes. |
| DatabaseDescriptor.setBroadcastAddress(localPublicAddress); |
| if (DatabaseDescriptor.getBroadcastRpcAddress() == null) |
| { |
| logger.info("broadcast_rpc_address unset, broadcasting public IP as rpc_address: {}", localPublicAddress); |
| DatabaseDescriptor.setBroadcastRpcAddress(localPublicAddress); |
| } |
| } |
| |
| @Override |
| public void gossiperStarting() |
| { |
| super.gossiperStarting(); |
| InetAddressAndPort address; |
| try |
| { |
| address = InetAddressAndPort.getByName(localPrivateAddress); |
| } |
| catch (UnknownHostException e) |
| { |
| throw new RuntimeException(e); |
| } |
| Gossiper.instance.addLocalApplicationState(ApplicationState.INTERNAL_ADDRESS_AND_PORT, StorageService.instance.valueFactory.internalAddressAndPort(address)); |
| Gossiper.instance.addLocalApplicationState(ApplicationState.INTERNAL_IP, StorageService.instance.valueFactory.internalIP(address.address)); |
| Gossiper.instance.register(new ReconnectableSnitchHelper(this, ec2region, true)); |
| } |
| } |