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/*
* Copyright 2015 Open Networking Laboratory
*
* 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.onosproject.bgp.controller.impl;
import java.util.Timer;
import java.util.TimerTask;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Implement sending keepalive message to connected peer periodically based on negotiated holdtime.
*/
public class BGPKeepAliveTimer {
private Timer keepAliveTimer;
private BGPChannelHandler handler;
private static final Logger log = LoggerFactory.getLogger(BGPKeepAliveTimer.class);
/**
* Gets keepalive timer object.
*
* @return keepAliveTimer keepalive timer.
*/
public Timer getKeepAliveTimer() {
return keepAliveTimer;
}
/**
* Initialize timer to send keepalive message periodically.
*
* @param h channel handler
* @param seconds time interval.
*/
public BGPKeepAliveTimer(BGPChannelHandler h, int seconds) {
this.handler = h;
this.keepAliveTimer = new Timer();
this.keepAliveTimer.schedule(new SendKeepAlive(), 0, seconds * 1000);
}
/**
* Send keepalive message to connected peer on schedule.
*/
class SendKeepAlive extends TimerTask {
@Override
public void run() {
log.debug("Sending periodic KeepAlive");
try {
// Send keep alive message
handler.sendKeepAliveMessage();
handler.getBgpPacketStats().addOutPacket();
} catch (Exception e) {
log.info("Exception occured while sending keepAlive message" + e.toString());
}
}
}
}
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