package org.jgroups.tests;
import org.jgroups.*;
import org.jgroups.debug.Simulator;
import org.jgroups.protocols.DISCARD;
import org.jgroups.protocols.UNICAST;
import org.jgroups.protocols.UNICAST2;
import org.jgroups.stack.Protocol;
import org.jgroups.util.Util;
import org.testng.Assert;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.Test;
import org.testng.annotations.DataProvider;
import java.nio.ByteBuffer;
import java.util.Vector;
/**
* Tests the UNICAST protocol
* @author Bela Ban
* @version $id$
*/
@Test(groups=Global.FUNCTIONAL,sequential=true)
public class UNICAST_Test {
Address a1, a2;
Vector<Address> members;
View v;
Simulator simulator;
static final int SIZE=1000; // bytes
static final int NUM_MSGS=10000;
@AfterMethod
void tearDown() throws Exception {
if(simulator != null)
simulator.stop();
}
@Test(dataProvider="configProvider")
public void testReceptionOfAllMessages(Protocol prot) throws Throwable {
System.out.println("prot=" + prot.getClass().getSimpleName());
Protocol[] stack=new Protocol[]{prot};
createStack(stack);
_testReceptionOfAllMessages();
}
@Test(dataProvider="configProvider")
public void testReceptionOfAllMessagesWithDISCARD(Protocol prot) throws Throwable {
System.out.println("prot=" + prot.getClass().getSimpleName());
DISCARD discard=new DISCARD();
discard.setDownDiscardRate(0.1); // discard all down message with 10% probability
Protocol[] stack=new Protocol[]{prot, discard};
createStack(stack);
_testReceptionOfAllMessages();
}
@DataProvider
public static Object[][] configProvider() {
Object[][] retval=new Object[][] {
{new UNICAST()},
{new UNICAST2()}
};
((UNICAST)retval[0][0]).setTimeout(new long[]{500,1000,2000,3000});
((UNICAST2)retval[1][0]).setTimeout(new long[]{500,1000,2000,3000});
return retval;
}
private static byte[] createPayload(int size, int seqno) {
ByteBuffer buf=ByteBuffer.allocate(size);
buf.putInt(seqno);
return buf.array();
}
/** Checks that messages 1 - NUM_MSGS are received in order */
static class Receiver implements Simulator.Receiver {
int num_mgs_received=0, next=1;
Throwable exception=null;
boolean received_all=false;
public void receive(Event evt) {
if(evt.getType() == Event.MSG) {
if(exception != null)
return;
Message msg=(Message)evt.getArg();
ByteBuffer buf=ByteBuffer.wrap(msg.getRawBuffer());
int seqno=buf.getInt();
if(seqno != next) {
exception=new Exception("expected seqno was " + next + ", but received " + seqno);
return;
}
next++;
num_mgs_received++;
if(num_mgs_received % 1000 == 0)
System.out.println("<== " + num_mgs_received);
if(num_mgs_received == NUM_MSGS) {
synchronized(this) {
received_all=true;
this.notifyAll();
}
}
}
}
public int getNumberOfReceivedMessages() {
return num_mgs_received;
}
public boolean receivedAll() {return received_all;}
public Throwable getException() {
return exception;
}
}
private void _testReceptionOfAllMessages() throws Throwable {
int num_received=0;
final Receiver r=new Receiver();
simulator.setReceiver(r);
for(int i=1; i <= NUM_MSGS; i++) {
Message msg=new Message(a1, null, createPayload(SIZE, i)); // unicast message
Event evt=new Event(Event.MSG, msg);
simulator.send(evt);
if(i % 1000 == 0)
System.out.println("==> " + i);
}
int num_tries=10;
while((num_received=r.getNumberOfReceivedMessages()) != NUM_MSGS && num_tries > 0) {
if(r.getException() != null)
throw r.getException();
synchronized(r) {
try {r.wait(3000);}
catch(InterruptedException e) {}
}
num_tries--;
}
printStats(num_received);
Assert.assertEquals(num_received, NUM_MSGS);
}
private void createStack(Protocol[] stack) throws Exception {
a1=Util.createRandomAddress();
members=new Vector<Address>();
members.add(a1);
v=new View(a1, 1, members);
simulator=new Simulator();
simulator.setLocalAddress(a1);
simulator.setView(v);
simulator.addMember(a1);
simulator.setProtocolStack(stack);
simulator.start();
}
private void printStats(int num_received) {
System.out.println("-- num received=" + num_received + ", stats:\n" + simulator.dumpStats());
}
}