/*
* Copyright (c) 2008-2017, Hazelcast, Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hazelcast.spi.impl;
import com.hazelcast.test.AssertTask;
import com.hazelcast.test.HazelcastParallelClassRunner;
import com.hazelcast.test.annotation.ParallelTest;
import com.hazelcast.test.annotation.QuickTest;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicReference;
import static com.hazelcast.spi.impl.AbstractInvocationFuture.VOID;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
@RunWith(HazelcastParallelClassRunner.class)
@Category({QuickTest.class, ParallelTest.class})
public class AbstractInvocationFuture_GetTest extends AbstractInvocationFuture_AbstractTest {
@Test
public void whenResultAlreadyAvailable() throws Exception {
future.complete(value);
Future getFuture = spawn(new Callable<Object>() {
@Override
public Object call() throws Exception {
return future.get();
}
});
assertCompletesEventually(getFuture);
assertSame(value, future.get());
}
@Test
public void whenResultAlreadyAvailable_andInterruptFlagSet() throws Exception {
future.complete(value);
final AtomicBoolean interrupted = new AtomicBoolean();
Future getFuture = spawn(new Callable<Object>() {
@Override
public Object call() throws Exception {
// we set the interrupt flag.
Thread.currentThread().interrupt();
Object value = future.get();
// and then we check if the interrupt flag is still set
interrupted.set(Thread.currentThread().isInterrupted());
return value;
}
});
assertCompletesEventually(getFuture);
assertSame(value, future.get());
assertTrue(interrupted.get());
}
@Test
public void whenSomeWaitingNeeded() throws ExecutionException, InterruptedException {
future.complete(value);
Future getFuture = spawn(new Callable<Object>() {
@Override
public Object call() throws Exception {
return future.get();
}
});
assertTrueEventually(new AssertTask() {
@Override
public void run() throws Exception {
assertNotSame(VOID, future.getState());
}
});
sleepSeconds(5);
assertCompletesEventually(getFuture);
assertSame(value, future.get());
}
@Test
public void whenInterruptedWhileWaiting() throws Exception {
final AtomicReference<Thread> thread = new AtomicReference<Thread>();
final AtomicBoolean interrupted = new AtomicBoolean();
Future getFuture = spawn(new Callable<Object>() {
@Override
public Object call() throws Exception {
thread.set(Thread.currentThread());
try {
return future.get();
} finally {
interrupted.set(Thread.currentThread().isInterrupted());
}
}
});
assertTrueEventually(new AssertTask() {
@Override
public void run() throws Exception {
assertNotSame(VOID, future.getState());
}
});
sleepSeconds(5);
thread.get().interrupt();
assertCompletesEventually(getFuture);
assertTrue(interrupted.get());
try {
future.get();
fail();
} catch (InterruptedException e) {
}
}
@Test
public void whenMultipleGetters() throws ExecutionException, InterruptedException {
List<Future> getFutures = new LinkedList<Future>();
for (int k = 0; k < 10; k++) {
getFutures.add(spawn(new Callable<Object>() {
@Override
public Object call() throws Exception {
return future.get();
}
}));
}
assertTrueEventually(new AssertTask() {
@Override
public void run() throws Exception {
assertNotSame(VOID, future.getState());
}
});
sleepSeconds(5);
future.complete(value);
for (Future getFuture : getFutures) {
assertCompletesEventually(getFuture);
assertSame(value, future.get());
}
assertSame(value, future.getState());
}
}