| /* |
| * Copyright 2015-present 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()); |
| } |
| } |
| } |
| } |