public void testQueued() throws Exception {
final AtomicReference<Throwable> failure = new AtomicReference<Throwable>();
//
BaseProcessFactory factory =
new BaseProcessFactory() {
@Override
public BaseProcess create(String request) {
return new BaseProcess(request) {
@Override
protected ShellResponse execute(String request) {
failure.set(failure("Was not exepecting request"));
return ShellResponse.ok();
}
@Override
public void cancel() {
failure.set(failure("Was not exepecting cancel"));
}
};
}
};
//
Shell shell = new BaseShell(factory);
CommandQueue commands = new CommandQueue();
AsyncShell asyncShell = new AsyncShell(commands, shell);
//
BaseProcessContext ctx = BaseProcessContext.create(asyncShell, "foo").execute();
assertEquals(Status.QUEUED, ((AsyncProcess) ctx.getProcess()).getStatus());
assertEquals(1, commands.getSize());
//
ctx.getProcess().cancel();
assertEquals(Status.CANCELED, ((AsyncProcess) ctx.getProcess()).getStatus());
// Execute the command
Future<?> future = commands.executeAsync();
future.get();
// Test we get terminated status and the callback was done
assertEquals(Status.TERMINATED, ((AsyncProcess) ctx.getProcess()).getStatus());
assertEquals(ShellResponse.Cancelled.class, ctx.getResponse().getClass());
safeFail(failure.get());
}
public void testEvaluating() throws Exception {
final AtomicReference<Throwable> failure = new AtomicReference<Throwable>();
final AtomicInteger cancelCount = new AtomicInteger(0);
final CountDownLatch latch1 = new CountDownLatch(1);
final CountDownLatch latch2 = new CountDownLatch(1);
//
BaseProcessFactory factory =
new BaseProcessFactory() {
@Override
public BaseProcess create(String request) {
return new BaseProcess(request) {
@Override
protected ShellResponse execute(String request) {
latch1.countDown();
try {
latch2.await();
} catch (InterruptedException e) {
failure.set(e);
}
return ShellResponse.ok();
}
@Override
public void cancel() {
cancelCount.getAndIncrement();
}
};
}
};
//
Shell shell = new BaseShell(factory);
CommandQueue commands = new CommandQueue();
AsyncShell asyncShell = new AsyncShell(commands, shell);
//
BaseProcessContext ctx = BaseProcessContext.create(asyncShell, "foo").execute();
assertEquals(Status.QUEUED, ((AsyncProcess) ctx.getProcess()).getStatus());
assertEquals(0, cancelCount.get());
assertEquals(1, commands.getSize());
// Execute the command
// And wait until the other thread is waiting
Future<?> future = commands.executeAsync();
latch1.await();
assertEquals(Status.EVALUATING, ((AsyncProcess) ctx.getProcess()).getStatus());
assertEquals(0, cancelCount.get());
//
ctx.getProcess().cancel();
assertEquals(Status.CANCELED, ((AsyncProcess) ctx.getProcess()).getStatus());
assertEquals(1, cancelCount.get());
//
ctx.getProcess().cancel();
assertEquals(Status.CANCELED, ((AsyncProcess) ctx.getProcess()).getStatus());
assertEquals(1, cancelCount.get());
// Wait until it's done
latch2.countDown();
future.get();
// Test we received a cancelled response even though we provided an OK result
assertEquals(ShellResponse.Cancelled.class, ctx.getResponse().getClass());
assertEquals(Status.TERMINATED, ((AsyncProcess) ctx.getProcess()).getStatus());
assertEquals(1, cancelCount.get());
//
safeFail(failure.get());
}