package org.jgroups.tests;
import org.jgroups.*;
import org.jgroups.conf.ClassConfigurator;
import org.jgroups.protocols.pbcast.GMS;
import org.jgroups.stack.Protocol;
import org.jgroups.stack.ProtocolStack;
import org.jgroups.util.Util;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Date;
import java.util.List;
/**
* @author Bela Ban
*/
@Test(groups=Global.STACK_DEPENDENT,singleThreaded=true)
public class JoinTest extends ChannelTestBase {
protected JChannel a, b;
@BeforeMethod
void setUp() throws Exception {
a=createChannel(true, 2, "A");
b=createChannel(a, "B");
}
@AfterMethod
void tearDown() throws Exception {
Util.close(b,a);
}
public void testSingleJoin() throws Exception {
a.connect("JoinTest");
View v=a.getView();
assert v != null;
assert v.size() == 1;
}
/**
* Tests that immediately after a connect(), a getView() returns the correct view
*/
public void testJoinsOnTwoChannels() throws Exception {
a.connect("JoinTest");
b.connect("JoinTest");
Util.sleep(2000); //no blocking is used, let the view propagate
View v1=a.getView(), v2=b.getView();
System.out.println("v1=" + v1 + ", v2=" + v2);
assert v1 != null;
assert v2 != null;
assert v1.size() == 2;
assert v2.size() == 2;
assert v1.equals(v2);
}
public void testJoinsOnTwoChannelsAndSend() throws Exception {
a.connect("JoinTest");
b.connect("JoinTest");
MyReceiver r1=new MyReceiver("c1");
MyReceiver r2=new MyReceiver("c2");
a.setReceiver(r1);
b.setReceiver(r2);
Message m1=new Message(null, "message-1"), m2=new Message(null, "message-2");
a.connect("JoinTest-2");
View view=a.getView();
assert view.size() == 2 : "c1's view: " + view;
b.connect("JoinTest-2");
view=b.getView();
assert view.size() == 2 : "c2's view: " + view;
Util.sleep(200);
view=a.getView();
assert view.size() == 2 : "c1's view: " + view;
a.send(m1);
b.send(m2);
Util.sleep(1500);
List<String>c1_list=r1.getMsgs(), c2_list=r2.getMsgs();
System.out.println("c1: " + c1_list.size() + " msgs, c2: " + c2_list.size() + " msgs");
assert c1_list.size() == 2 : "cl_list: " + c1_list;
assert c2_list.size() == 2 : "c2_list: " + c2_list;
assert c1_list.contains("message-1");
assert c2_list.contains("message-1");
assert c1_list.contains("message-2");
assert c2_list.contains("message-2");
}
/**
* Tests the case where we send a JOIN-REQ, but get back a JOIN-RSP after GMS.join_timeout, so we've already
* started another discovery. Tests whether the discovery process is cancelled correctly.
* http://jira.jboss.com/jira/browse/JGRP-621
*/
public void testDelayedJoinResponse() throws Exception {
final long JOIN_TIMEOUT=2000, DELAY_JOIN_REQ=4000;
final long TOLERANCE=1000;
_testDelayedJoinResponse(JOIN_TIMEOUT, DELAY_JOIN_REQ, TOLERANCE);
}
public void testDelayedJoinResponse2() throws Exception {
final long JOIN_TIMEOUT=2000, DELAY_JOIN_REQ=4000;
final long TOLERANCE=1000;
_testDelayedJoinResponse(JOIN_TIMEOUT, DELAY_JOIN_REQ, TOLERANCE);
}
@Test
public void testDelayedJoinResponse3() throws Exception {
final long JOIN_TIMEOUT=5000, DELAY_JOIN_REQ=4000;
final long TOLERANCE=1000;
_testDelayedJoinResponse(JOIN_TIMEOUT, DELAY_JOIN_REQ, TOLERANCE);
}
public void testDelayedJoinResponse4() throws Exception {
final long JOIN_TIMEOUT=1000, DELAY_JOIN_REQ=4000;
final long TOLERANCE=1000;
_testDelayedJoinResponse(JOIN_TIMEOUT, DELAY_JOIN_REQ, TOLERANCE);
}
void _testDelayedJoinResponse(long join_timeout, long delay_join_req, long tolerance) throws Exception {
a.connect("JoinTest");
b.connect("JoinTest");
ProtocolStack stack=b.getProtocolStack();
GMS gms=stack.findProtocol(GMS.class);
if(gms != null)
gms.setJoinTimeout(join_timeout);
stack=a.getProtocolStack();
DELAY_JOIN_REQ delay=new DELAY_JOIN_REQ().delay(delay_join_req);
stack.insertProtocol(delay, ProtocolStack.Position.BELOW, GMS.class);
System.out.println(new Date() + ": joining c2");
long start=System.currentTimeMillis(), stop;
b.connect("JoinTest-2");
stop=System.currentTimeMillis();
long join_time=stop-start;
long tolerated_join_time=join_timeout + delay_join_req + tolerance; // 1 sec more is okay (garbage collection etc)
System.out.println(new Date() + ": joining of c2 took " + join_time + " ms (should have taken not more than "+tolerated_join_time +" ms)");
assert join_time <= tolerated_join_time : "join time (" + join_time + ") was > tolerated join time (" + tolerated_join_time + ")";
}
private static class MyReceiver extends ReceiverAdapter {
private final String name;
private final List<String> msgs;
public MyReceiver(String name) {
this.name=name;
msgs = Collections.synchronizedList(new ArrayList<>());
}
public List<String> getMsgs() {
return msgs;
}
public void clear() {msgs.clear();}
public void receive(Message msg) {
String s=(String)msg.getObject();
msgs.add(s);
System.out.println("[" + name + "] received " + s + " from " + msg.getSrc());
}
public void viewAccepted(View new_view) {
System.out.println("[" + name + "] view: " + new_view);
}
}
protected static class DELAY_JOIN_REQ extends Protocol {
private long delay=4000;
private final short gms_id=ClassConfigurator.getProtocolId(GMS.class);
public long delay() {return delay;}
public DELAY_JOIN_REQ delay(long delay) {this.delay=delay; return this;}
public Object up(final Message msg) {
final GMS.GmsHeader hdr=msg.getHeader(gms_id);
if(hdr != null) {
switch(hdr.getType()) {
case GMS.GmsHeader.JOIN_REQ:
case GMS.GmsHeader.JOIN_REQ_WITH_STATE_TRANSFER:
System.out.println(new Date() + ": delaying JOIN-REQ by " + delay + " ms");
Thread thread=new Thread() {
public void run() {
Util.sleep(delay);
System.out.println(new Date() + ": sending up delayed JOIN-REQ by " + hdr.getMember());
up_prot.up(msg);
}
};
thread.start();
return null;
}
}
return up_prot.up(msg);
}
}
}