| /* |
| * 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.provider.nil.packet.impl; |
| |
| import org.apache.felix.scr.annotations.Activate; |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.Deactivate; |
| import org.apache.felix.scr.annotations.Modified; |
| import org.apache.felix.scr.annotations.Property; |
| import org.apache.felix.scr.annotations.Reference; |
| import org.apache.felix.scr.annotations.ReferenceCardinality; |
| import org.onlab.packet.Ethernet; |
| import org.onlab.packet.ICMP; |
| import org.onosproject.net.ConnectPoint; |
| import org.onosproject.net.Device; |
| import org.onosproject.net.PortNumber; |
| import org.onosproject.net.device.DeviceService; |
| import org.onosproject.net.packet.DefaultInboundPacket; |
| import org.onosproject.net.packet.DefaultPacketContext; |
| import org.onosproject.net.packet.InboundPacket; |
| import org.onosproject.net.packet.OutboundPacket; |
| import org.onosproject.net.packet.PacketContext; |
| import org.onosproject.net.packet.PacketProvider; |
| import org.onosproject.net.packet.PacketProviderRegistry; |
| import org.onosproject.net.packet.PacketProviderService; |
| import org.onosproject.net.provider.AbstractProvider; |
| import org.onosproject.net.provider.ProviderId; |
| import org.osgi.service.component.ComponentContext; |
| import org.slf4j.Logger; |
| |
| import java.nio.ByteBuffer; |
| import java.util.Dictionary; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.TimeUnit; |
| |
| import static com.google.common.base.Strings.isNullOrEmpty; |
| import static org.onlab.util.Tools.delay; |
| import static org.onlab.util.Tools.groupedThreads; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Provider which 1) intercepts network-bound messages from the core, and 2) |
| * generates PacketEvents at some tunable rate. To be used for benchmarking |
| * only. |
| */ |
| @Component(immediate = true) |
| public class NullPacketProvider extends AbstractProvider implements |
| PacketProvider { |
| |
| private final Logger log = getLogger(getClass()); |
| |
| // Default packetEvent generation rate (in packets/sec) |
| // If 0, we are just a sink for network-bound packets |
| private static final int DEFAULT_RATE = 5; |
| // arbitrary host "destination" |
| private static final int DESTHOST = 5; |
| |
| private PacketProviderService providerService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected PacketProviderRegistry providerRegistry; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected DeviceService deviceService; |
| |
| // Rate to generate PacketEvents, per second |
| @Property(name = "pktRate", intValue = DEFAULT_RATE, |
| label = "Rate of PacketEvent generation") |
| private int pktRate = DEFAULT_RATE; |
| |
| private ExecutorService packetDriver = |
| Executors.newFixedThreadPool(1, groupedThreads("onos/null", "packet-driver")); |
| |
| public NullPacketProvider() { |
| super(new ProviderId("null", "org.onosproject.provider.nil")); |
| } |
| |
| @Activate |
| public void activate(ComponentContext context) { |
| providerService = providerRegistry.register(this); |
| if (!modified(context)) { |
| packetDriver.submit(new PacketDriver()); |
| } |
| log.info("started"); |
| } |
| |
| @Deactivate |
| public void deactivate(ComponentContext context) { |
| try { |
| packetDriver.awaitTermination(1000, TimeUnit.MILLISECONDS); |
| } catch (InterruptedException e) { |
| log.error("PacketDriver did not terminate"); |
| } |
| packetDriver.shutdownNow(); |
| providerRegistry.unregister(this); |
| log.info("stopped"); |
| } |
| |
| @Modified |
| public boolean modified(ComponentContext context) { |
| if (context == null) { |
| log.info("No configuration change, using defaults: pktRate={}", |
| DEFAULT_RATE); |
| return false; |
| } |
| Dictionary<?, ?> properties = context.getProperties(); |
| |
| int newRate; |
| try { |
| String s = String.valueOf(properties.get("pktRate")); |
| newRate = isNullOrEmpty(s) ? pktRate : Integer.parseInt(s.trim()); |
| } catch (NumberFormatException | ClassCastException e) { |
| log.warn(e.getMessage()); |
| newRate = pktRate; |
| } |
| |
| if (newRate != pktRate) { |
| pktRate = newRate; |
| packetDriver.submit(new PacketDriver()); |
| log.info("Using new settings: pktRate={}", pktRate); |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public void emit(OutboundPacket packet) { |
| // We don't have a network to emit to. Keep a counter here, maybe? |
| } |
| |
| /** |
| * Generates packet events at a given rate. |
| */ |
| private class PacketDriver implements Runnable { |
| |
| // time between event firing, in milliseconds |
| int pktInterval; |
| // filler echo request |
| ICMP icmp; |
| Ethernet eth; |
| |
| public PacketDriver() { |
| pktInterval = 1000 / pktRate; |
| icmp = new ICMP(); |
| icmp.setIcmpType((byte) 8).setIcmpCode((byte) 0) |
| .setChecksum((short) 0); |
| eth = new Ethernet(); |
| eth.setEtherType(Ethernet.TYPE_IPV4); |
| eth.setPayload(icmp); |
| } |
| |
| @Override |
| public void run() { |
| log.info("PacketDriver started"); |
| while (!packetDriver.isShutdown()) { |
| for (Device dev : deviceService.getDevices()) { |
| sendEvents(dev); |
| } |
| } |
| } |
| |
| private void sendEvents(Device dev) { |
| // make it look like things came from ports attached to hosts |
| for (int i = 0; i < 4; i++) { |
| eth.setSourceMACAddress("00:00:10:00:00:0" + i) |
| .setDestinationMACAddress("00:00:10:00:00:0" + DESTHOST); |
| InboundPacket inPkt = new DefaultInboundPacket( |
| new ConnectPoint(dev.id(), PortNumber.portNumber(i)), |
| eth, ByteBuffer.wrap(eth.serialize())); |
| PacketContext pctx = new NullPacketContext( |
| System.currentTimeMillis(), inPkt, null, false); |
| providerService.processPacket(pctx); |
| delay(pktInterval); |
| } |
| } |
| |
| } |
| |
| /** |
| * Minimal PacketContext to make core + applications happy. |
| */ |
| private class NullPacketContext extends DefaultPacketContext { |
| |
| public NullPacketContext(long time, InboundPacket inPkt, |
| OutboundPacket outPkt, boolean block) { |
| super(time, inPkt, outPkt, block); |
| } |
| |
| @Override |
| public void send() { |
| // We don't send anything out. |
| } |
| |
| } |
| |
| } |