org.apache.flink.runtime.io.network.netty.NettyChannelHeartbeatMonitor Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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,
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* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.flink.runtime.io.network.netty;
import org.apache.flink.runtime.io.network.NetworkClientHandler;
import org.apache.flink.util.Preconditions;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
public class NettyChannelHeartbeatMonitor implements Runnable {
private final NetworkClientHandler networkClientHandler;
private volatile ScheduledFuture futureTimeout;
public NettyChannelHeartbeatMonitor(ScheduledExecutorService executorService,
long heartbeatTimeout,
NetworkClientHandler networkClientHandler) {
Preconditions.checkArgument(heartbeatTimeout >= 0, "The heartbeat timeout should >= 0");
this.networkClientHandler = networkClientHandler;
this.futureTimeout = executorService.schedule(this, heartbeatTimeout, TimeUnit.MILLISECONDS);
}
void cancel() {
if (futureTimeout != null) {
futureTimeout.cancel(true);
}
futureTimeout = null;
}
@Override
public void run() {
// notify heartbeat timeout.
networkClientHandler.notifyHeartbeatTimeout();
}
}