com.hazelcast.nio.tcp.TcpIpConnectionMonitor Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2016, 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.nio.tcp;
import com.hazelcast.logging.ILogger;
import com.hazelcast.nio.Address;
import com.hazelcast.nio.IOService;
import com.hazelcast.util.Clock;
public class TcpIpConnectionMonitor {
private final ILogger logger;
private final IOService ioService;
private final Address endPoint;
private final long minInterval;
private final int maxFaults;
private int faults;
private long lastFaultTime;
public TcpIpConnectionMonitor(TcpIpConnectionManager connectionManager, Address endPoint) {
this.endPoint = endPoint;
this.ioService = connectionManager.getIoService();
this.minInterval = ioService.getConnectionMonitorInterval();
this.maxFaults = ioService.getConnectionMonitorMaxFaults();
this.logger = ioService.getLogger(getClass().getName());
}
public Address getEndPoint() {
return endPoint;
}
public synchronized void onError(Throwable t) {
String errorMessage = "An error occurred on connection to " + endPoint + getCauseDescription(t);
logger.finest(errorMessage);
final long now = Clock.currentTimeMillis();
final long last = lastFaultTime;
if (now - last > minInterval) {
if (faults++ >= maxFaults) {
String removeEndpointMessage = "Removing connection to endpoint " + endPoint + getCauseDescription(t);
logger.warning(removeEndpointMessage);
ioService.removeEndpoint(endPoint);
}
lastFaultTime = now;
}
}
public synchronized void reset() {
String resetMessage = "Resetting connection monitor for endpoint " + endPoint;
logger.finest(resetMessage);
faults = 0;
lastFaultTime = 0L;
}
private String getCauseDescription(Throwable t) {
StringBuilder s = new StringBuilder(" Cause => ");
if (t != null) {
s.append(t.getClass().getName()).append(" {").append(t.getMessage()).append("}");
} else {
s.append("Unknown");
}
return s.append(", Error-Count: ").append(faults + 1).toString();
}
}