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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.pcep.controller.impl;
import static org.onlab.util.Tools.groupedThreads;
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.ServerBootstrap;
import org.jboss.netty.channel.ChannelPipelineFactory;
import org.jboss.netty.channel.group.ChannelGroup;
import org.jboss.netty.channel.group.DefaultChannelGroup;
import org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory;
import org.onosproject.pcep.controller.PccId;
import org.onosproject.pcep.controller.PcepPacketStats;
import org.onosproject.pcep.controller.driver.PcepAgent;
import org.onosproject.pcep.controller.driver.PcepClientDriver;
import org.onosproject.pcepio.protocol.PcepFactories;
import org.onosproject.pcepio.protocol.PcepFactory;
import org.onosproject.pcepio.protocol.PcepVersion;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* The main controller class. Handles all setup and network listeners -
* Distributed ownership control of pcc through IControllerRegistryService
*/
public class Controller {
private static final Logger log = LoggerFactory.getLogger(Controller.class);
private static final PcepFactory FACTORY1 = PcepFactories.getFactory(PcepVersion.PCEP_1);
private ChannelGroup cg;
// Configuration options
private int pcepPort = 4189;
private int workerThreads = 10;
// Start time of the controller
private long systemStartTime;
private PcepAgent agent;
private NioServerSocketChannelFactory execFactory;
// Perf. related configuration
private static final int SEND_BUFFER_SIZE = 4 * 1024 * 1024;
/**
* Returns factory version for processing pcep messages.
*
* @return instance of factory version
*/
public PcepFactory getPcepMessageFactory1() {
return FACTORY1;
}
/**
* To get system start time.
*
* @return system start time in milliseconds
*/
public long getSystemStartTime() {
return (this.systemStartTime);
}
/**
* Tell controller that we're ready to accept pcc connections.
*/
public void run() {
try {
final ServerBootstrap bootstrap = createServerBootStrap();
bootstrap.setOption("reuseAddr", true);
bootstrap.setOption("child.keepAlive", true);
bootstrap.setOption("child.tcpNoDelay", true);
bootstrap.setOption("child.sendBufferSize", Controller.SEND_BUFFER_SIZE);
ChannelPipelineFactory pfact = new PcepPipelineFactory(this);
bootstrap.setPipelineFactory(pfact);
InetSocketAddress sa = new InetSocketAddress(pcepPort);
cg = new DefaultChannelGroup();
cg.add(bootstrap.bind(sa));
log.info("Listening for PCC connection on {}", sa);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* Creates server boot strap.
*
* @return ServerBootStrap
*/
private ServerBootstrap createServerBootStrap() {
if (workerThreads == 0) {
execFactory = new NioServerSocketChannelFactory(
Executors.newCachedThreadPool(groupedThreads("onos/pcep", "boss-%d")),
Executors.newCachedThreadPool(groupedThreads("onos/pcep", "worker-%d")));
return new ServerBootstrap(execFactory);
} else {
execFactory = new NioServerSocketChannelFactory(
Executors.newCachedThreadPool(groupedThreads("onos/pcep", "boss-%d")),
Executors.newCachedThreadPool(groupedThreads("onos/pcep", "worker-%d")), workerThreads);
return new ServerBootstrap(execFactory);
}
}
/**
* Initialize internal data structures.
*/
public void init() {
// These data structures are initialized here because other
// module's startUp() might be called before ours
this.systemStartTime = System.currentTimeMillis();
}
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;
}
public Long getUptime() {
RuntimeMXBean rb = ManagementFactory.getRuntimeMXBean();
return rb.getUptime();
}
/**
* Creates instance of Pcep client.
*
* @param pccId pcc identifier
* @param sessionID session id
* @param pv pcep version
* @param pktStats pcep packet statistics
* @return instance of PcepClient
*/
protected PcepClientDriver getPcepClientInstance(PccId pccId, int sessionID, PcepVersion pv,
PcepPacketStats pktStats) {
PcepClientDriver pcepClientDriver = new PcepClientImpl();
pcepClientDriver.init(pccId, pv, pktStats);
pcepClientDriver.setAgent(agent);
return pcepClientDriver;
}
/**
* Starts the pcep controller.
*
* @param ag Pcep agent
*/
public void start(PcepAgent ag) {
log.info("Started");
this.agent = ag;
this.init();
this.run();
}
/**
* Stops the pcep controller.
*/
public void stop() {
log.info("Stopped");
execFactory.shutdown();
cg.close();
}
}
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