| /** |
| * 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 org.apache.aurora.scheduler.testing; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.concurrent.ScheduledExecutorService; |
| import java.util.concurrent.ScheduledFuture; |
| import java.util.concurrent.TimeUnit; |
| |
| import com.google.common.base.Preconditions; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.Lists; |
| |
| import org.apache.aurora.common.collections.Pair; |
| import org.apache.aurora.common.quantity.Amount; |
| import org.apache.aurora.common.quantity.Time; |
| import org.apache.aurora.common.util.testing.FakeClock; |
| import org.easymock.EasyMock; |
| import org.easymock.IAnswer; |
| |
| import static org.easymock.EasyMock.expectLastCall; |
| import static org.junit.Assert.assertEquals; |
| |
| /** |
| * A simulated scheduled executor that records scheduled work and executes it when the clock is |
| * advanced past their execution time. |
| */ |
| public final class FakeScheduledExecutor extends FakeClock { |
| |
| private final List<Pair<Long, Runnable>> deferredWork = Lists.newArrayList(); |
| |
| private FakeScheduledExecutor() { } |
| |
| // TODO(wfarner): Rename to fromScheduledExecutor(). |
| public static FakeScheduledExecutor scheduleExecutor(ScheduledExecutorService mock) { |
| FakeScheduledExecutor executor = new FakeScheduledExecutor(); |
| mock.schedule( |
| EasyMock.<Runnable>anyObject(), |
| EasyMock.anyLong(), |
| EasyMock.anyObject()); |
| expectLastCall().andAnswer(answerSchedule(executor)).anyTimes(); |
| |
| mock.execute(EasyMock.anyObject()); |
| expectLastCall().andAnswer(answerExecute()).anyTimes(); |
| |
| return executor; |
| } |
| |
| private static IAnswer<Object> answerExecuteWithDelay(FakeScheduledExecutor executor) { |
| return () -> { |
| Object[] args = EasyMock.getCurrentArguments(); |
| Runnable work = (Runnable) args[0]; |
| @SuppressWarnings("unchecked") |
| long value = (long) args[1]; |
| @SuppressWarnings("unchecked") |
| TimeUnit unit = (TimeUnit) args[2]; |
| |
| addDelayedWork(executor, TimeUnit.MILLISECONDS.convert(value, unit), work); |
| return null; |
| }; |
| } |
| |
| public static FakeScheduledExecutor fromScheduledExecutorService(ScheduledExecutorService mock) { |
| FakeScheduledExecutor executor = new FakeScheduledExecutor(); |
| mock.schedule( |
| EasyMock.<Runnable>anyObject(), |
| EasyMock.anyLong(), |
| EasyMock.<TimeUnit>anyObject()); |
| expectLastCall().andAnswer(answerExecuteWithDelay(executor)).anyTimes(); |
| |
| mock.execute(EasyMock.anyObject()); |
| expectLastCall().andAnswer(answerExecute()).anyTimes(); |
| |
| return executor; |
| } |
| |
| private static IAnswer<Void> answerExecute() { |
| return () -> { |
| Object[] args = EasyMock.getCurrentArguments(); |
| Runnable work = (Runnable) args[0]; |
| work.run(); |
| return null; |
| }; |
| } |
| |
| private static IAnswer<Object> answerSchedule(FakeScheduledExecutor executor) { |
| return () -> { |
| Object[] args = EasyMock.getCurrentArguments(); |
| Runnable work = (Runnable) args[0]; |
| long value = (Long) args[1]; |
| TimeUnit unit = (TimeUnit) args[2]; |
| addDelayedWork(executor, toMillis(value, unit), work); |
| return null; |
| }; |
| } |
| |
| private static long toMillis(long value, TimeUnit unit) { |
| return TimeUnit.MILLISECONDS.convert(value, unit); |
| } |
| |
| public static FakeScheduledExecutor scheduleAtFixedRateExecutor( |
| ScheduledExecutorService mock, |
| int maxInvocations) { |
| |
| return scheduleAtFixedRateExecutor(mock, 1, maxInvocations); |
| } |
| |
| public static FakeScheduledExecutor scheduleAtFixedRateExecutor( |
| ScheduledExecutorService mock, |
| int maxSchedules, |
| int maxInvocations) { |
| |
| FakeScheduledExecutor executor = new FakeScheduledExecutor(); |
| mock.schedule(EasyMock.<Runnable>anyObject(), EasyMock.anyLong(), EasyMock.anyObject()); |
| expectLastCall().andAnswer(() -> { |
| ((Runnable) EasyMock.getCurrentArguments()[0]).run(); |
| return null; |
| }).anyTimes(); |
| mock.scheduleAtFixedRate( |
| EasyMock.anyObject(), |
| EasyMock.anyLong(), |
| EasyMock.anyLong(), |
| EasyMock.anyObject()); |
| expectLastCall() |
| .andAnswer(answerScheduleAtFixedRate(executor, maxInvocations)) |
| .times(maxSchedules); |
| |
| return executor; |
| } |
| |
| private static IAnswer<ScheduledFuture<?>> answerScheduleAtFixedRate( |
| FakeScheduledExecutor executor, |
| int workCount) { |
| |
| return () -> { |
| Object[] args = EasyMock.getCurrentArguments(); |
| Runnable work = (Runnable) args[0]; |
| long initialDelay = (Long) args[1]; |
| long period = (Long) args[2]; |
| TimeUnit unit = (TimeUnit) args[3]; |
| for (int i = 0; i <= workCount; i++) { |
| addDelayedWork(executor, toMillis(initialDelay, unit) + i * toMillis(period, unit), work); |
| } |
| return null; |
| }; |
| } |
| |
| private static void addDelayedWork( |
| FakeScheduledExecutor executor, |
| long delayMillis, |
| Runnable work) { |
| |
| Preconditions.checkArgument(delayMillis > 0); |
| executor.deferredWork.add(Pair.of(executor.nowMillis() + delayMillis, work)); |
| } |
| |
| @Override |
| public void setNowMillis(long nowMillis) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public void advance(Amount<Long, Time> period) { |
| super.advance(period); |
| Iterator<Pair<Long, Runnable>> entries = deferredWork.iterator(); |
| List<Runnable> toExecute = Lists.newArrayList(); |
| while (entries.hasNext()) { |
| Pair<Long, Runnable> next = entries.next(); |
| if (next.getFirst() <= nowMillis()) { |
| entries.remove(); |
| toExecute.add(next.getSecond()); |
| } |
| } |
| for (Runnable work : toExecute) { |
| work.run(); |
| } |
| } |
| |
| public int countDeferredWork() { |
| return deferredWork.size(); |
| } |
| |
| public void assertEmpty() { |
| assertEquals(ImmutableList.<Pair<Long, Runnable>>of(), deferredWork); |
| } |
| } |