/*
* 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.executionservice.impl;
import com.hazelcast.spi.TaskScheduler;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
import static com.hazelcast.util.Preconditions.checkNotNull;
public final class DelegatingTaskScheduler implements TaskScheduler {
private final ScheduledExecutorService scheduledExecutorService;
private final ExecutorService executor;
public DelegatingTaskScheduler(ScheduledExecutorService scheduledExecutorService, ExecutorService executor) {
this.scheduledExecutorService = scheduledExecutorService;
this.executor = executor;
}
@Override
public void execute(Runnable command) {
executor.execute(command);
}
@Override
public ScheduledFuture<?> schedule(Runnable command, long delay, TimeUnit unit) {
checkNotNull(command);
Runnable decoratedTask = new DelegatingTaskDecorator(command, executor);
return scheduledExecutorService.schedule(decoratedTask, delay, unit);
}
@Override
public <V> ScheduledFuture<Future<V>> schedule(Callable<V> command, long delay, TimeUnit unit) {
checkNotNull(command);
Callable<Future<V>> decoratedTask = new DelegatingCallableTaskDecorator<V>(command, executor);
return scheduledExecutorService.schedule(decoratedTask, delay, unit);
}
@Override
public ScheduledFuture<?> scheduleWithRepetition(Runnable command, long initialDelay, long period, TimeUnit unit) {
checkNotNull(command);
Runnable decoratedTask = new DelegateAndSkipOnConcurrentExecutionDecorator(command, executor);
return scheduledExecutorService.scheduleAtFixedRate(decoratedTask, initialDelay, period, unit);
}
}