| /* |
| * Copyright 2023-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.netflow.impl; |
| |
| import java.lang.management.ManagementFactory; |
| import java.lang.management.RuntimeMXBean; |
| import java.net.InetSocketAddress; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.concurrent.Executors; |
| |
| import org.jboss.netty.bootstrap.ConnectionlessBootstrap; |
| |
| import org.jboss.netty.channel.Channel; |
| import org.jboss.netty.channel.ChannelFactory; |
| import org.jboss.netty.channel.ChannelPipelineFactory; |
| import org.jboss.netty.channel.FixedReceiveBufferSizePredictorFactory; |
| import org.jboss.netty.channel.group.ChannelGroup; |
| import org.jboss.netty.channel.group.DefaultChannelGroup; |
| import org.jboss.netty.channel.socket.nio.NioDatagramChannelFactory; |
| import org.jboss.netty.channel.FixedReceiveBufferSizePredictor; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.onosproject.netflow.NetflowController; |
| |
| /** |
| * The main controller class. Handles all setup and network listeners - |
| * Ownership of netflow message receiver. |
| */ |
| public class Controller { |
| |
| private static final Logger log = LoggerFactory.getLogger(Controller.class); |
| |
| private ChannelGroup channelGroup; |
| private Channel serverChannel; |
| |
| // Configuration options |
| protected static final short NETFLOW_PORT_NUM = 2055; |
| private final int workerThreads = 16; |
| |
| // Start time of the controller |
| private long systemStartTime; |
| |
| private ChannelFactory serverExecFactory; |
| |
| private static final int BUFFER_SIZE = 5 * 1024; |
| |
| private NetflowController controller; |
| |
| /** |
| * Constructor to initialize the values. |
| * |
| * @param controller netflow controller instance |
| */ |
| public Controller(NetflowController controller) { |
| this.controller = controller; |
| } |
| |
| /** |
| * To get system start time. |
| * |
| * @return system start time in milliseconds |
| */ |
| public long getSystemStartTime() { |
| return (this.systemStartTime); |
| } |
| |
| /** |
| * Initialize timer. |
| */ |
| public void init() { |
| this.systemStartTime = System.currentTimeMillis(); |
| } |
| |
| /** |
| * Gets run time memory. |
| * |
| * @return run time memory |
| */ |
| public Map<String, Long> getMemory() { |
| Map<String, Long> m = new HashMap<>(); |
| Runtime runtime = Runtime.getRuntime(); |
| m.put("total", runtime.totalMemory()); |
| m.put("free", runtime.freeMemory()); |
| return m; |
| } |
| |
| /** |
| * Gets UP time. |
| * |
| * @return UP time |
| */ |
| public Long getUptime() { |
| RuntimeMXBean rb = ManagementFactory.getRuntimeMXBean(); |
| return rb.getUptime(); |
| } |
| |
| /** |
| * Netflow collector it will receive message from netflow exporter. |
| */ |
| public void run() { |
| |
| try { |
| |
| final ConnectionlessBootstrap bootstrap = createServerBootStrap(); |
| |
| bootstrap.setOption("reuseAddress", false); |
| bootstrap.setOption("child.reuseAddress", false); |
| bootstrap.setOption("readBufferSize", BUFFER_SIZE); //15M |
| bootstrap.setOption("receiveBufferSizePredictor", |
| new FixedReceiveBufferSizePredictor(BUFFER_SIZE)); |
| bootstrap.setOption("receiveBufferSizePredictorFactory", |
| new FixedReceiveBufferSizePredictorFactory(BUFFER_SIZE)); |
| ChannelPipelineFactory pfact = new NetflowPipelineFactory(this.controller); |
| |
| bootstrap.setPipelineFactory(pfact); |
| InetSocketAddress inetSocketAddress = new InetSocketAddress(NETFLOW_PORT_NUM); |
| channelGroup = new DefaultChannelGroup(); |
| serverChannel = bootstrap.bind(inetSocketAddress); |
| channelGroup.add(serverChannel); |
| log.info("Listening for netflow exporter connection on {}", inetSocketAddress); |
| } catch (Exception e) { |
| throw new IllegalStateException(e); |
| } |
| } |
| |
| /** |
| * Creates server boot strap. |
| * |
| * @return ServerBootStrap |
| */ |
| private ConnectionlessBootstrap createServerBootStrap() { |
| |
| if (workerThreads == 0) { |
| serverExecFactory = new NioDatagramChannelFactory( |
| Executors.newFixedThreadPool(2)); |
| return new ConnectionlessBootstrap(serverExecFactory); |
| } else { |
| serverExecFactory = new NioDatagramChannelFactory( |
| Executors.newFixedThreadPool(2), |
| workerThreads); |
| return new ConnectionlessBootstrap(serverExecFactory); |
| } |
| } |
| |
| /** |
| * Stops the netflow collector. |
| */ |
| public void stop() { |
| log.info("Stopped"); |
| channelGroup.close(); |
| } |
| |
| /** |
| * Starts the netflow collector. |
| */ |
| public void start() { |
| log.info("Started"); |
| this.run(); |
| } |
| } |