1 files changed, 72 insertions, 0 deletions
diff --git a/framework/src/onos/bgp/ctl/src/main/java/org/onosproject/bgp/controller/impl/BgpKeepAliveTimer.java b/framework/src/onos/bgp/ctl/src/main/java/org/onosproject/bgp/controller/impl/BgpKeepAliveTimer.java
new file mode 100755
index 00000000..524ac4c1
--- /dev/null
+++ b/framework/src/onos/bgp/ctl/src/main/java/org/onosproject/bgp/controller/impl/BgpKeepAliveTimer.java
@@ -0,0 +1,72 @@
+/*
+ * 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());
+            }
+        }
+    }
+}