package org.jgroups.tests;
import org.jgroups.Address;
import org.jgroups.Global;
import org.jgroups.JChannel;
import org.jgroups.Message;
import org.jgroups.ReceiverAdapter;
import org.jgroups.protocols.DISCARD_PAYLOAD;
import org.jgroups.protocols.UNICAST;
import org.jgroups.protocols.UNICAST2;
import org.jgroups.stack.ProtocolStack;
import org.jgroups.stack.Protocol;
import org.jgroups.util.Util;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
/**
* Tests the UNICAST protocol for OOB msgs, tests http://jira.jboss.com/jira/browse/JGRP-377
* @author Bela Ban
*/
@Test(groups=Global.STACK_DEPENDENT,sequential=true)
public class UNICAST_OOB_Test extends ChannelTestBase {
JChannel c1, c2;
@BeforeMethod
void setUp() throws Exception {
c1=createChannel(true, 2);
c2=createChannel(c1);
}
@AfterMethod
void tearDown() throws Exception {
Util.close(c2, c1);
}
public void testRegularMessages() throws Exception {
sendMessages(false);
}
public void testOutOfBandMessages() throws Exception {
sendMessages(true);
}
/**
* Check that 4 is received before 3
*/
private void sendMessages(boolean oob) throws Exception {
DISCARD_PAYLOAD prot1=new DISCARD_PAYLOAD();
MyReceiver receiver=new MyReceiver();
c2.setReceiver(receiver);
// the first channel will discard the unicast messages with seqno #3 two times, the let them pass down
ProtocolStack stack=c1.getProtocolStack();
Protocol neighbor=stack.findProtocol(UNICAST.class, UNICAST2.class);
System.out.println("Found unicast protocol " + neighbor.getClass().getSimpleName());
stack.insertProtocolInStack(prot1, neighbor, ProtocolStack.BELOW);
c1.connect("UNICAST_OOB_Test");
c2.connect("UNICAST_OOB_Test");
assert c2.getView().size() == 2 : "ch2.view is " + c2.getView();
Address dest=c2.getAddress();
for(int i=1; i <=5; i++) {
Message msg=new Message(dest, null, new Long(i));
if(i == 4 && oob)
msg.setFlag(Message.OOB);
System.out.println("-- sending message #" + i);
c1.send(msg);
Util.sleep(100);
}
// wait until retransmission of seqno #3 happens, so that 4 and 5 are received as well
long target_time=System.currentTimeMillis() + 5000;
do {
if(receiver.size() >= 5)
break;
Util.sleep(500);
}
while(target_time > System.currentTimeMillis());
List<Long> seqnos=receiver.getSeqnos();
System.out.println("sequence numbers: " + seqnos);
if(!oob) {
for(int i=0; i < 5; i++)
assert seqnos.get(i) == i+1 : " seqno is " + seqnos.get(i) + ", but expected " + i+1;
}
else {
// 4 needs to be received before 3. Reason: 4 is sent OOB, does *not* wait until 3 has been retransmitted !
int index_3=-1, index_4=-1;
for(int i=0; i < 5; i++) {
if(seqnos.get(i) == 3)
index_3=i;
if(seqnos.get(i) == 4)
index_4=i;
}
assert index_4 < index_3 : "4 must come before 3 in list " + seqnos;
}
}
public static class MyReceiver extends ReceiverAdapter {
/** List<Long> of unicast sequence numbers */
List<Long> seqnos=Collections.synchronizedList(new LinkedList<Long>());
public MyReceiver() {
}
public List<Long> getSeqnos() {
return seqnos;
}
public void receive(Message msg) {
if(msg != null) {
Long num=(Long)msg.getObject();
seqnos.add(num);
}
}
public int size() {return seqnos.size();}
}
}