/**
* Copyright 2012 Nikita Koksharov
*
* 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.corundumstudio.socketio.scheduler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.util.HashedWheelTimer;
import io.netty.util.Timeout;
import io.netty.util.TimerTask;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.TimeUnit;
public class HashedWheelScheduler implements CancelableScheduler {
private final Map<SchedulerKey, Timeout> scheduledFutures = new ConcurrentHashMap<SchedulerKey, Timeout>();
private final HashedWheelTimer executorService = new HashedWheelTimer();
private volatile ChannelHandlerContext ctx;
@Override
public void update(ChannelHandlerContext ctx) {
this.ctx = ctx;
}
public void cancel(SchedulerKey key) {
Timeout timeout = scheduledFutures.remove(key);
if (timeout != null) {
timeout.cancel();
}
}
public void schedule(final Runnable runnable, long delay, TimeUnit unit) {
executorService.newTimeout(new TimerTask() {
@Override
public void run(Timeout timeout) throws Exception {
runnable.run();
}
}, delay, unit);
}
public void scheduleCallback(final SchedulerKey key, final Runnable runnable, long delay, TimeUnit unit) {
Timeout timeout = executorService.newTimeout(new TimerTask() {
@Override
public void run(Timeout timeout) throws Exception {
ctx.executor().execute(new Runnable() {
@Override
public void run() {
try {
runnable.run();
} finally {
scheduledFutures.remove(key);
}
}
});
}
}, delay, unit);
if (!timeout.isExpired()) {
scheduledFutures.put(key, timeout);
}
}
public void schedule(final SchedulerKey key, final Runnable runnable, long delay, TimeUnit unit) {
Timeout timeout = executorService.newTimeout(new TimerTask() {
@Override
public void run(Timeout timeout) throws Exception {
try {
runnable.run();
} finally {
scheduledFutures.remove(key);
}
}
}, delay, unit);
if (!timeout.isExpired()) {
scheduledFutures.put(key, timeout);
}
}
public void shutdown() {
executorService.stop();
}
}