@BeforeMethod
void setUp() throws Exception {
System.out.print("Connecting channels: ");
a = createChannel("A");
disp_a = new MessageDispatcher(a, null, null);
a.connect(RpcLockingTest.class.getSimpleName());
lock_a = new LockService(a).getLock("lock");
b = createChannel("B");
disp_b = new MessageDispatcher(b, null, null);
b.connect(RpcLockingTest.class.getSimpleName());
lock_b = new LockService(b).getLock("lock");
Util.waitUntilAllChannelsHaveSameSize(30000, 1000, a, b);
System.out.println("");
disp_a.setRequestHandler(
new RequestHandler() {
@Override
public Object handle(Message arg0) throws Exception {
System.out.println("A received a message, will now try to lock the lock");
if (lock_a.tryLock()) {
Assert.fail("Should not be able to lock the lock here");
System.out.println("A aquired the lock, this shouldn't be possible");
} else System.out.println("The lock was already locked, as it should be");
return "Hello";
}
});
disp_b.setRequestHandler(
new RequestHandler() {
@Override
public Object handle(Message arg0) throws Exception {
System.out.println("B received a message, will now try to lock the lock");
if (lock_b.tryLock()) {
Assert.fail("Should not be able to lock the lock here");
System.out.println("B aquired the lock, this shouldn't be possible");
} else System.out.println("The lock already was locked, as it should be");
return "Hello";
}
});
// Print who is the coordinator
if (b.getView().getMembers().get(0).equals(b.getAddress()))
System.out.println("B is the coordinator");
else System.out.println("A is the coordinator");
System.out.println("");
}
/**
* If the coordinator of the lock locks the lock and then send a message, the receiver will wait
* for ever in tryLock. However, castMessage will return after a while because of the default
* settings of RequestOptions.SYNC().
*/
public void testCoordSendFirst() throws Exception {
System.out.println("Running testCoordSendFirst");
// ===========================================================================
if (lock_a.tryLock()) {
try {
System.out.println("A aquired the lock, about to send message to B");
String rsp =
disp_a.sendMessage(
new Message(b.getAddress(), "bla"), RequestOptions.SYNC().setTimeout(60000));
if (rsp == null) {
System.err.println("ERROR: didn't return correctly");
Assert.fail("Didn't return correctly");
} else System.out.println("Returned: " + rsp);
} finally {
lock_a.unlock();
}
} else {
Assert.fail("The lock was already locked");
System.out.println("A failed to aquire the lock");
}
// ===========================================================================
System.out.println();
}
