106 lines
3.5 KiB
Java
106 lines
3.5 KiB
Java
/*
|
|
* 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.gossip.examples;
|
|
|
|
import com.codahale.metrics.MetricRegistry;
|
|
import java.net.InetAddress;
|
|
import java.net.URI;
|
|
import java.net.URISyntaxException;
|
|
import java.net.UnknownHostException;
|
|
import java.util.ArrayList;
|
|
import java.util.HashMap;
|
|
import java.util.List;
|
|
|
|
import org.apache.gossip.GossipMember;
|
|
import org.apache.gossip.GossipService;
|
|
import org.apache.gossip.GossipSettings;
|
|
import org.apache.gossip.RemoteGossipMember;
|
|
|
|
/**
|
|
* This class is an example of how one could use the gossip service. Here we start multiple gossip
|
|
* clients on this host as specified in the config file.
|
|
*
|
|
* @author harmenw
|
|
*/
|
|
public class GossipExample extends Thread {
|
|
/** The number of clients to start. */
|
|
private static final int NUMBER_OF_CLIENTS = 4;
|
|
|
|
/**
|
|
* @param args
|
|
*/
|
|
public static void main(String[] args) {
|
|
new GossipExample();
|
|
}
|
|
|
|
/**
|
|
* Constructor. This will start the this thread.
|
|
*/
|
|
public GossipExample() {
|
|
start();
|
|
}
|
|
|
|
/**
|
|
* @see java.lang.Thread#run()
|
|
*/
|
|
public void run() {
|
|
try {
|
|
GossipSettings settings = new GossipSettings();
|
|
List<GossipService> clients = new ArrayList<>();
|
|
String myIpAddress = InetAddress.getLocalHost().getHostAddress();
|
|
String cluster = "My Gossip Cluster";
|
|
|
|
// Create the gossip members and put them in a list and give them a port number starting with
|
|
// 2000.
|
|
List<GossipMember> startupMembers = new ArrayList<>();
|
|
for (int i = 0; i < NUMBER_OF_CLIENTS; ++i) {
|
|
URI u;
|
|
try {
|
|
u = new URI("udp://" + myIpAddress + ":" + (2000 + i));
|
|
} catch (URISyntaxException e) {
|
|
throw new RuntimeException(e);
|
|
}
|
|
startupMembers.add(new RemoteGossipMember(cluster, u, "", 0, new HashMap<String,String>()));
|
|
}
|
|
|
|
// Lets start the gossip clients.
|
|
// Start the clients, waiting cleaning-interval + 1 second between them which will show the
|
|
// dead list handling.
|
|
for (GossipMember member : startupMembers) {
|
|
GossipService gossipService = new GossipService(cluster, member.getUri(), "", new HashMap<String,String>(),
|
|
startupMembers, settings, null, new MetricRegistry());
|
|
clients.add(gossipService);
|
|
gossipService.start();
|
|
sleep(settings.getCleanupInterval() + 1000);
|
|
}
|
|
|
|
// After starting all gossip clients, first wait 10 seconds and then shut them down.
|
|
sleep(10000);
|
|
System.err.println("Going to shutdown all services...");
|
|
// Since they all run in the same virtual machine and share the same executor, if one is
|
|
// shutdown they will all stop.
|
|
clients.get(0).shutdown();
|
|
|
|
} catch (UnknownHostException e) {
|
|
e.printStackTrace();
|
|
} catch (InterruptedException e) {
|
|
e.printStackTrace();
|
|
}
|
|
}
|
|
}
|