BMP channel handler
bmp message will be decoded and received in channel handler
Change-Id: I21376346d93ce83a219328feb688ce867511d33e
diff --git a/apps/bgpmonitoring/app/src/main/java/org/onosproject/bgpmonitoring/impl/BmpChannelHandler.java b/apps/bgpmonitoring/app/src/main/java/org/onosproject/bgpmonitoring/impl/BmpChannelHandler.java
new file mode 100644
index 0000000..5aae709
--- /dev/null
+++ b/apps/bgpmonitoring/app/src/main/java/org/onosproject/bgpmonitoring/impl/BmpChannelHandler.java
@@ -0,0 +1,121 @@
+/*
+ * Copyright 2024-present Open Networking Foundation
+ *
+ * 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.bgpmonitoring.impl;
+
+import org.jboss.netty.channel.ChannelHandlerContext;
+import org.jboss.netty.channel.ChannelStateEvent;
+import org.jboss.netty.channel.ExceptionEvent;
+import org.jboss.netty.channel.MessageEvent;
+import org.jboss.netty.handler.timeout.IdleStateAwareChannelHandler;
+import org.jboss.netty.channel.Channel;
+
+import org.onosproject.bgpmonitoring.BmpController;
+import org.onosproject.bgpmonitoring.BmpPacket;
+import org.onosproject.bgpmonitoring.BmpParseException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.List;
+
+/**
+ * Channel handler deals with the bmp router connection and
+ * dispatches messages from bmp router to the appropriate locations.
+ */
+public class BmpChannelHandler extends IdleStateAwareChannelHandler {
+
+ private static final Logger log = LoggerFactory.getLogger(BmpChannelHandler.class);
+
+ private Channel channel;
+ private BmpController controller;
+
+
+ /**
+ * Create a new BmpChannelHandler instance.
+ *
+ * @param controller bmp controller
+ */
+ BmpChannelHandler(BmpController controller) {
+ this.controller = controller;
+ }
+
+ /**
+ * BMP channel connect to BMP router.
+ *
+ * @param ctx channel handler context
+ * @param event channel state event
+ * @throws Exception on error while connecting channel
+ */
+ @Override
+ public void channelConnected(ChannelHandlerContext ctx, ChannelStateEvent event) throws Exception {
+ channel = event.getChannel();
+ log.info("Bmp connected from {}", channel.getRemoteAddress());
+ }
+
+ /**
+ * BMP channel disconnect from BMP router.
+ *
+ * @param ctx channel handler context
+ * @param event channel state event
+ * @throws Exception on error while disconnecting channel
+ */
+ @Override
+ public void channelDisconnected(ChannelHandlerContext ctx, ChannelStateEvent event) throws Exception {
+ channel = event.getChannel();
+ log.info("Bmp disconnected from {}", channel.getRemoteAddress());
+ }
+
+
+ /**
+ * BMP channel caught exception message from BMP router.
+ *
+ * @param ctx channel handler context
+ * @param event channel exception event
+ * @throws Exception on error while parsing exception
+ */
+
+ @Override
+ public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent event) throws Exception {
+ log.error("Bmp channel exception caught ", event.getCause());
+ }
+
+ /**
+ * BMP channel receives BMP message from BMP router.
+ *
+ * @param ctx channel handler context
+ * @param event channel message event
+ * @throws Exception on error while parsing exception
+ */
+ @Override
+ public void messageReceived(ChannelHandlerContext ctx, MessageEvent event) throws Exception {
+ log.info("Bmp message received {}", event.getMessage());
+ if (event.getMessage() instanceof List) {
+ ((List<BmpPacket>) event.getMessage()).stream()
+ .forEach(bmp -> processBmpPacket(bmp));
+ } else {
+ processBmpPacket((BmpPacket) event.getMessage());
+ }
+ }
+
+ private void processBmpPacket(BmpPacket packet) {
+ try {
+ controller.processBmpPacket(packet);
+ } catch (BmpParseException ex) {
+ log.error("Bmp packet parser exception ", ex);
+ }
+
+ }
+}