// $Id: CloseTest.java,v 1.14 2007/10/31 14:07:34 vlada Exp $
package org.jgroups.tests;
import java.util.Vector;
import org.jgroups.Address;
import org.jgroups.Channel;
import org.jgroups.ChannelClosedException;
import org.jgroups.View;
import org.jgroups.util.Util;
/**
* Demos the creation of a channel and subsequent connection and closing. Demo application should exit (no
* more threads running)
*/
public class CloseTest extends ChannelTestBase {
Channel channel, channel1, channel2, c1, c2, c3;
public void setUp() throws Exception {
super.setUp();
}
public void tearDown() throws Exception {
closeChannel(channel);
closeChannel(channel1);
closeChannel(channel2);
closeChannel(c1);
closeChannel(c2);
closeChannel(c3);
super.tearDown();
}
protected boolean useBlocking()
{
return false;
}
private void closeChannel(Channel c) {
if(c != null && (c.isOpen() || c.isConnected())) {
c.close();
}
}
public void testDoubleClose() throws Exception {
System.out.println("-- creating channel1 --");
channel1=createChannel();
System.out.println("-- connecting channel1 --");
channel1.connect("bla");
assertTrue("channel open", channel1.isOpen());
assertTrue("channel connected", channel1.isConnected());
System.out.println("-- closing channel1 --");
channel1.close();
System.out.println("-- closing channel1 (again) --");
channel1.close();
assertFalse("channel not connected", channel1.isConnected());
System.out.println("-- done, threads are ");
Util.printThreads();
}
public void testCreationAndClose() throws Exception {
System.out.println("-- creating channel1 --");
Channel c = null;
c = createChannel();
c.connect("CloseTest1");
assertTrue("channel open", c.isOpen());
assertTrue("channel connected", c.isConnected());
c.close();
assertFalse("channel not connected", c.isConnected());
c.close();
}
public void testViewChangeReceptionOnChannelCloseByParticipant() throws Exception {
Address a1, a2;
Vector members;
c1 = createChannel("A");
System.out.println("-- connecting c1");
c1.connect("X");
Util.sleep(500); // time to receive its own view
dumpMessages("c1", c1);
a1=c1.getLocalAddress();
c2 = createChannel("A");
System.out.println("-- connecting c2");
c2.connect("X");
Util.sleep(500); // time to receive its own view
a2=c2.getLocalAddress();
dumpMessages("c2", c2);
System.out.println("-- closing c2");
c2.close();
Object obj=c1.receive(100);
assertTrue(obj instanceof View);
View v=(View)obj;
members=v.getMembers();
System.out.println("-- first view of c1: " + v);
assertEquals(2, members.size());
assertTrue(members.contains(a1));
assertTrue(members.contains(a2));
obj=c1.receive(100);
assertTrue(obj instanceof View);
v=(View)obj;
members=v.getMembers();
System.out.println("-- second view of c1: " + v);
assertEquals(1, members.size());
assertTrue(members.contains(a1));
assertFalse(members.contains(a2));
}
public void testViewChangeReceptionOnChannelCloseByCoordinator() throws Exception {
Address a1, a2;
Vector members;
Object obj;
View v;
c1=createChannel("A");
c1.connect("X");
Util.sleep(500); // time to receive its own view
dumpMessages("c1", c1);
a1=c1.getLocalAddress();
c2=createChannel("A");
c2.connect("X");
Util.sleep(500); // time to receive its own view
a2=c2.getLocalAddress();
v=(View)c2.receive(1);
members=v.getMembers();
assertEquals(2, members.size());
assertTrue(members.contains(a2));
c1.close();
Util.sleep(500);
System.out.println("queue of c2 is " + c2.dumpQueue());
assertTrue("found 0 messages in channel", c2.getNumMessages() > 0);
obj=c2.receive(0);
assertTrue(obj instanceof View);
v=(View)obj;
members=v.getMembers();
assertEquals(1, members.size());
assertFalse(members.contains(a1));
assertTrue(members.contains(a2));
assertEquals(0, c2.getNumMessages());
}
private void dumpMessages(String msg, Channel ch) throws Exception {
while(ch.getNumMessages() > 0) {
Object obj=ch.receive(0);
if(obj instanceof View)
System.out.println(msg + ": " + obj);
}
}
public void testConnectDisconnectConnectCloseSequence() throws Exception {
System.out.println("-- creating channel --");
channel=createChannel();
System.out.println("-- connecting channel to CloseTest1--");
channel.connect("CloseTest1");
System.out.println("view is " + channel.getView());
System.out.println("-- disconnecting channel --");
channel.disconnect();
System.out.println("-- connecting channel to OtherGroup --");
channel.connect("OtherGroup");
System.out.println("view is " + channel.getView());
System.out.println("-- closing channel --");
channel.close();
System.out.println("-- done, threads are ");
Util.printThreads();
}
public void testConnectCloseSequenceWith2Members() throws Exception {
System.out.println("-- creating channel --");
channel=createChannel("A");
System.out.println("-- connecting channel --");
channel.connect("X");
System.out.println("view is " + channel.getView());
System.out.println("-- creating channel1 --");
channel1=createChannel("A");
System.out.println("-- connecting channel1 --");
channel1.connect("X");
System.out.println("view is " + channel1.getView());
System.out.println("-- closing channel1 --");
channel1.close();
Util.sleep(2000);
System.out.println("-- closing channel --");
channel.close();
}
public void testCreationAndClose2() throws Exception {
System.out.println("-- creating channel2 --");
channel2=createChannel();
System.out.println("-- connecting channel2 --");
channel2.connect("CloseTest2");
System.out.println("-- closing channel --");
channel2.close();
Util.sleep(2000);
Util.printThreads();
}
public void testChannelClosedException() throws Exception {
System.out.println("-- creating channel --");
channel=createChannel();
System.out.println("-- connecting channel --");
channel.connect("CloseTestLoop");
System.out.println("-- closing channel --");
channel.close();
Util.sleep(2000);
try {
channel.connect("newGroup");
fail(); // cannot connect to a closed channel
}
catch(ChannelClosedException ex) {
assertTrue(true);
}
}
public void testCreationAndCloseLoop() throws Exception {
System.out.println("-- creating channel --");
channel=createChannel();
for(int i=1; i <= 10; i++) {
System.out.println("-- connecting channel (attempt #" + i + " ) --");
channel.connect("CloseTestLoop2");
System.out.println("-- closing channel --");
channel.close();
System.out.println("-- reopening channel --");
channel.open();
}
channel.close();
}
public void testMultipleConnectsAndDisconnects() throws Exception {
c1=createChannel("A");
assertTrue(c1.isOpen());
assertFalse(c1.isConnected());
c1.connect("bla");
System.out.println("view after c1.connect(): " + c1.getView());
assertTrue(c1.isOpen());
assertTrue(c1.isConnected());
assertServiceAndClusterView(c1, 1);
c2=createChannel("A");
assertTrue(c2.isOpen());
assertFalse(c2.isConnected());
c2.connect("bla");
System.out.println("view after c2.connect(): " + c2.getView());
assertTrue(c2.isOpen());
assertTrue(c2.isConnected());
assertServiceAndClusterView(c2, 2);
Util.sleep(500);
assertServiceAndClusterView(c1, 2);
c2.disconnect();
System.out.println("view after c2.disconnect(): " + c2.getView());
assertTrue(c2.isOpen());
assertFalse(c2.isConnected());
Util.sleep(500);
assertServiceAndClusterView(c1, 1);
c2.connect("bla");
System.out.println("view after c2.connect(): " + c2.getView());
assertTrue(c2.isOpen());
assertTrue(c2.isConnected());
assertServiceAndClusterView(c2, 2);
Util.sleep(300);
assertServiceAndClusterView(c1, 2);
// Now see what happens if we reconnect the first channel
c3=createChannel("A");
assertTrue(c3.isOpen());
assertFalse(c3.isConnected());
assertServiceAndClusterView(c1, 2);
assertServiceAndClusterView(c2, 2);
c1.disconnect();
Util.sleep(1000);
assertTrue(c1.isOpen());
assertFalse(c1.isConnected());
assertServiceAndClusterView(c2, 1);
assertTrue(c3.isOpen());
assertFalse(c3.isConnected());
c1.connect("bla");
System.out.println("view after c1.connect(): " + c1.getView());
assertTrue(c1.isOpen());
assertTrue(c1.isConnected());
assertServiceAndClusterView(c1, 2);
Util.sleep(500);
assertServiceAndClusterView(c2, 2);
assertTrue(c3.isOpen());
assertFalse(c3.isConnected());
}
private void assertServiceAndClusterView(Channel ch, int num) {
View view=ch.getView();
String msg="view=" + view;
assertNotNull(view);
assertEquals(msg, num, view.size());
}
public static void main(String[] args) {
String[] testCaseName={CloseTest.class.getName()};
junit.textui.TestRunner.main(testCaseName);
}
}