public void testFlushWithCrashedParticipants() throws Exception {
JChannel c1 = null;
JChannel c2 = null;
JChannel c3 = null;
try {
c1 = createChannel(true, 3, "C1");
changeProps(c1);
c1.connect("testFlushWithCrashedFlushCoordinator");
c2 = createChannel(c1, "C2");
changeProps(c2);
c2.connect("testFlushWithCrashedFlushCoordinator");
c3 = createChannel(c1, "C3");
changeProps(c3);
c3.connect("testFlushWithCrashedFlushCoordinator");
// and then kill members other than flush coordinator
Util.shutdown(c3);
Util.shutdown(c1);
// start flush
Util.startFlush(c2);
c2.stopFlush();
Util.waitUntilAllChannelsHaveSameSize(10000, 500, c2);
// cluster should not hang and one remaining member should have a correct view
assertTrue("correct view size", c2.getView().size() == 1);
} finally {
Util.close(c3, c2, c1);
}
}
private boolean startFlush(Channel ch, int num_attempts, long timeout, boolean automatic_resume) {
log.debug(
"starting flush on " + ch.getAddress() + " with automatic resume=" + automatic_resume);
boolean result = Util.startFlush(ch, num_attempts, 10, timeout);
if (automatic_resume) {
ch.stopFlush();
}
return result;
}
private boolean startFlush(Channel ch, boolean automatic_resume) {
log.debug(
"starting flush on " + ch.getAddress() + " with automatic resume=" + automatic_resume);
boolean result = Util.startFlush(ch);
if (automatic_resume) {
ch.stopFlush();
}
return result;
}
public void testFlushWithCrashedParticipant() throws Exception {
JChannel c1 = null;
JChannel c2 = null;
JChannel c3 = null;
try {
c1 = createChannel(true, 3, "C1");
changeProps(c1);
c1.connect("testFlushWithCrashedParticipant");
c2 = createChannel(c1, "C2");
changeProps(c2);
c2.connect("testFlushWithCrashedParticipant");
c3 = createChannel(c1, "C3");
changeProps(c3);
c3.connect("testFlushWithCrashedParticipant");
System.out.println("shutting down C3");
Util.shutdown(c3); // kill a flush participant
System.out.println("C2: starting flush");
boolean rc = Util.startFlush(c2);
System.out.println("flush " + (rc ? " was successful" : "failed"));
assert rc;
System.out.println("stopping flush");
c2.stopFlush();
System.out.println("waiting for view to contain C1 and C2");
Util.waitUntilAllChannelsHaveSameSize(10000, 500, c1, c2);
// cluster should not hang and two remaining members should have a correct view
System.out.println("C1: view=" + c1.getView() + "\nC2: view=" + c2.getView());
assertTrue("correct view size", c1.getView().size() == 2);
assertTrue("correct view size", c2.getView().size() == 2);
} finally {
Util.close(c3, c2, c1);
}
}
/** Tests http://jira.jboss.com/jira/browse/JGRP-661 */
public void testPartialFlush() throws Exception {
JChannel c1 = null;
JChannel c2 = null;
try {
c1 = createChannel(true, 2);
c1.setReceiver(new SimpleReplier(c1, true));
c1.connect("testPartialFlush");
c2 = createChannel(c1);
c2.setReceiver(new SimpleReplier(c2, false));
c2.connect("testPartialFlush");
List<Address> members = new ArrayList<Address>();
members.add(c2.getAddress());
boolean flushedOk = Util.startFlush(c2, members);
assertTrue("Partial flush worked", flushedOk);
c2.stopFlush(members);
} finally {
Util.close(c2, c1);
}
}
/** Retrieves state from the target member. See {@link #getState(Address,long)} for details. */
public void getState(Address target, long timeout, boolean useFlushIfPresent) throws Exception {
Callable<Boolean> flusher = () -> Util.startFlush(JChannel.this);
getState(target, timeout, useFlushIfPresent ? flusher : null);
}