org.jgroups.demos.PubServer Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
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package org.jgroups.demos;
import org.jgroups.Address;
import org.jgroups.Global;
import org.jgroups.blocks.cs.*;
import org.jgroups.jmx.JmxConfigurator;
import org.jgroups.logging.Log;
import org.jgroups.logging.LogFactory;
import org.jgroups.stack.IpAddress;
import org.jgroups.util.Bits;
import org.jgroups.util.DefaultSocketFactory;
import org.jgroups.util.DefaultThreadFactory;
import org.jgroups.util.Util;
import java.io.DataInput;
import java.net.InetAddress;
import java.nio.ByteBuffer;
/**
* Demo which starts an {@link NioServer} that accepts messages from clients ({@link PubClient}) and forwards them to
* all connected clients
* @author Bela Ban
* @since 3.6.5
*/
public class PubServer implements Receiver {
protected BaseServer server;
protected final Log log=LogFactory.getLog(PubServer.class);
protected void start(InetAddress bind_addr, int port, boolean nio, int recv_buf_size) throws Exception {
server=nio?
new NioServer(new DefaultThreadFactory("pubsrv", false), new DefaultSocketFactory(),
bind_addr, port, port+50, null, 0, recv_buf_size,
"jgroups.nio.pubserver")
: new TcpServer(new DefaultThreadFactory("pubsrv", false), new DefaultSocketFactory(),
bind_addr, port, port+50, null, 0, recv_buf_size,
"jgroups.tcp.pubserver");
server.receiver(this);
server.start();
JmxConfigurator.register(server, Util.getMBeanServer(), "pub:name=pub-server");
int local_port=server.localAddress() instanceof IpAddress? ((IpAddress)server.localAddress()).getPort(): 0;
System.out.printf("\nPubServer listening at %s:%s\n", bind_addr != null? bind_addr : "0.0.0.0", local_port);
}
@Override
public void receive(Address sender, ByteBuffer buf) {
try {
server.send(null, buf);
}
catch(Exception ex) {
log.error("failed publishing message", ex);
}
}
@Override
public void receive(Address sender, byte[] buf, int offset, int length) {
try {
server.send(null, buf, offset, length);
}
catch(Exception ex) {
log.error("failed publishing message", ex);
}
}
public void receive(Address sender, DataInput in) throws Exception {
int len=in.readInt();
byte[] buf=new byte[len + Global.INT_SIZE];
Bits.writeInt(len, buf, 0);
in.readFully(buf, Global.INT_SIZE, len);
server.send(null, buf, 0, buf.length);
}
public static void main(String[] args) throws Exception {
int port=7500, recv_buf_size=0;
InetAddress bind_addr=null;
boolean nio=true;
for(int i=0; i < args.length; i++) {
if(args[i].equals("-port")) {
port=Integer.parseInt(args[++i]);
continue;
}
if(args[i].equals("-bind_addr")) {
bind_addr=InetAddress.getByName(args[++i]);
continue;
}
if(args[i].equals("-nio")) {
nio=Boolean.parseBoolean(args[++i]);
continue;
}
if(args[i].equals("-recv_buf_size")) {
recv_buf_size=Integer.parseInt(args[++i]);
continue;
}
help();
return;
}
PubServer server=new PubServer();
server.start(bind_addr, port, nio, recv_buf_size);
}
protected static void help() {
System.out.println("PubServer [-port port] [-bind_addr bind_addr] [-nio true|false] [-recv_buf_size bytes]");
}
}