package org.jgroups.tests;
import org.jgroups.Address;
import org.jgroups.Global;
import org.jgroups.JChannel;
import org.jgroups.Message;
import org.jgroups.blocks.MessageDispatcher;
import org.jgroups.blocks.RequestOptions;
import org.jgroups.logging.Log;
import org.jgroups.logging.LogFactory;
import org.jgroups.protocols.*;
import org.jgroups.protocols.pbcast.GMS;
import org.jgroups.protocols.pbcast.NAKACK2;
import org.jgroups.stack.DiagnosticsHandler;
import org.jgroups.stack.ProtocolStack;
import org.jgroups.util.*;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import java.io.IOException;
import java.net.InetAddress;
import java.util.Collections;
/**
* Tests the {@link org.jgroups.protocols.RSVP} protocol
* @author Dan Berindei
* @author Bela Ban
*/
@Test(groups=Global.FUNCTIONAL,singleThreaded=true)
public class MessageDispatcherRSVPTest {
protected static final int NUM=2; // number of members
protected final JChannel[] channels=new JChannel[NUM];
protected final MessageDispatcher[] dispatchers=new MessageDispatcher[NUM];
protected MyDiagnosticsHandler handler;
@BeforeMethod
void setUp() throws Exception {
handler=new MyDiagnosticsHandler(InetAddress.getByName("224.0.75.75"), 7500,
LogFactory.getLog(DiagnosticsHandler.class),
new DefaultSocketFactory(),
new DefaultThreadFactory("", false));
handler.start();
System.out.print("Connecting channels: ");
for(int i=0; i < NUM; i++) {
SHARED_LOOPBACK shared_loopback=new SHARED_LOOPBACK();
shared_loopback.setDiagnosticsHandler(handler);
channels[i]=new JChannel(shared_loopback,
new DISCARD(),
new SHARED_LOOPBACK_PING(),
new MERGE3().setValue("min_interval", 1000).setValue("max_interval", 3000),
new NAKACK2().setValue("use_mcast_xmit",false)
.setValue("discard_delivered_msgs",true)
.setValue("log_discard_msgs", false).setValue("log_not_found_msgs", false),
new UNICAST3().setValue("xmit_table_num_rows",5).setValue("xmit_interval", 300),
new RSVP().setValue("timeout", 10000).setValue("throw_exception_on_timeout", true),
new GMS().setValue("print_local_addr",false)
.setValue("leave_timeout",100).setValue("join_timeout", 500)
.setValue("log_view_warnings",false)
.setValue("view_ack_collection_timeout",2000)
.setValue("log_collect_msgs",false));
channels[i].setName(String.valueOf((i + 1)));
dispatchers[i]=new MessageDispatcher(channels[i]);
channels[i].connect("MessageDispatcherRSVPTest");
System.out.print(i + 1 + " ");
if(i == 0)
Util.sleep(1000);
}
Util.waitUntilAllChannelsHaveSameView(30000, 1000, channels);
System.out.println("");
}
@AfterMethod
void tearDown() throws Exception {
for(int i=NUM-1; i >= 0; i--) {
ProtocolStack stack=channels[i].getProtocolStack();
String cluster_name=channels[i].getClusterName();
stack.stopStack(cluster_name);
stack.destroy();
}
handler.destroy();
}
/**
* First send a message, drop it (using DISCARD) and then close the channel. The caller invoking castMessage() should
* get an exception, as the channel was closed
*/
public void testCancellationByClosingChannel() throws Exception {
testCancellationByClosing(false, // multicast
new Closer(channels[0]));
}
public void testCancellationByClosingChannelUnicast() throws Exception {
testCancellationByClosing(true, // unicast
new Closer(channels[0]));
}
/**
* Sends a message via the MessageDispatcher on a closed channel. This should immediately throw an exception.
*/
public void testSendingMessageOnClosedChannel() throws Exception {
// unicast
sendMessageOnClosedChannel(channels[1].getAddress());
// multicast
sendMessageOnClosedChannel(null);
}
public void testSendingMessageOnClosedChannelRSVP() throws Exception {
// unicast
sendMessageOnClosedChannel(channels[1].getAddress(), Message.Flag.RSVP);
// multicast
sendMessageOnClosedChannel(null, Message.Flag.RSVP);
}
protected void testCancellationByClosing(boolean unicast, Thread closer) throws Exception {
DISCARD discard=channels[0].getProtocolStack().findProtocol(DISCARD.class);
discard.setDiscardAll(true);
try {
Address target=unicast? channels[1].getAddress() : null;
byte[] data="bla".getBytes();
Buffer buf=new Buffer(data, 0, data.length);
Message msg=new Message(target, "bla");
msg.setFlag(Message.Flag.RSVP);
closer.start();
if(unicast) {
System.out.println("sending unicast message to " + target);
dispatchers[0].sendMessage(target, buf, RequestOptions.SYNC().flags(Message.Flag.RSVP));
assert false: "sending the message on a closed channel should have thrown an exception";
}
else {
System.out.println("sending multicast message");
RspList<Object> rsps=dispatchers[0].castMessage(Collections.singleton(channels[1].getAddress()),buf,RequestOptions.SYNC());
System.out.println("rsps = " + rsps);
assert rsps.size() == 1;
Rsp<Object> rsp=rsps.iterator().next();
System.out.println("rsp = " + rsp);
assert rsp.hasException();
Throwable ex=rsp.getException();
assert ex instanceof IllegalStateException;
}
}
catch(IllegalStateException t) {
System.out.println("received \"" + t + "\" as expected");
}
}
protected void sendMessageOnClosedChannel(Address dest, Message.Flag... flags) throws Exception {
RequestOptions opts=RequestOptions.SYNC().timeout(2000).flags(flags);
byte[] data="bla".getBytes();
Buffer buf=new Buffer(data, 0, data.length);
channels[0].close();
try {
if(dest == null) // multicast
dispatchers[0].castMessage(Collections.singleton(channels[1].getAddress()), buf, opts);
else
dispatchers[0].sendMessage(dest, buf, opts);
assert false: "sending the message on a closed channel should have thrown an exception";
}
catch(IllegalStateException t) {
System.out.println("received \"" + t + "\" as expected");
}
}
protected static class Closer extends Thread {
protected final JChannel ch;
public Closer(JChannel ch) {this.ch=ch;}
public void run() {
Util.sleep(2000);
System.out.println("closing channel");
Util.close(ch);
};
}
protected static class MyDiagnosticsHandler extends DiagnosticsHandler {
protected MyDiagnosticsHandler(InetAddress diagnostics_addr, int diagnostics_port, Log log, SocketFactory socket_factory, ThreadFactory thread_factory) {
super(diagnostics_addr,diagnostics_port,log,socket_factory,thread_factory);
}
public void start() throws IOException {super.start();}
public void stop() {}
public void destroy() {super.stop();}
}
}
;