Ayaka Koshibe | 7dc1d04 | 2015-01-21 15:28:03 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2015 Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.provider.nil.packet.impl; |
| 17 | |
| 18 | import static com.google.common.base.Strings.isNullOrEmpty; |
| 19 | import static org.onlab.util.Tools.delay; |
| 20 | import static org.onlab.util.Tools.namedThreads; |
| 21 | import static org.slf4j.LoggerFactory.getLogger; |
| 22 | |
| 23 | import java.nio.ByteBuffer; |
| 24 | import java.util.Dictionary; |
| 25 | import java.util.concurrent.ExecutorService; |
| 26 | import java.util.concurrent.Executors; |
| 27 | import java.util.concurrent.TimeUnit; |
| 28 | |
| 29 | import org.apache.felix.scr.annotations.Activate; |
| 30 | import org.apache.felix.scr.annotations.Component; |
| 31 | import org.apache.felix.scr.annotations.Deactivate; |
| 32 | import org.apache.felix.scr.annotations.Modified; |
| 33 | import org.apache.felix.scr.annotations.Property; |
| 34 | import org.apache.felix.scr.annotations.Reference; |
| 35 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
| 36 | import org.onlab.packet.Ethernet; |
| 37 | import org.onlab.packet.ICMP; |
| 38 | import org.onosproject.net.ConnectPoint; |
| 39 | import org.onosproject.net.Device; |
| 40 | import org.onosproject.net.PortNumber; |
| 41 | import org.onosproject.net.device.DeviceService; |
| 42 | import org.onosproject.net.packet.DefaultInboundPacket; |
| 43 | import org.onosproject.net.packet.DefaultPacketContext; |
| 44 | import org.onosproject.net.packet.InboundPacket; |
| 45 | import org.onosproject.net.packet.OutboundPacket; |
| 46 | import org.onosproject.net.packet.PacketContext; |
| 47 | import org.onosproject.net.packet.PacketProvider; |
| 48 | import org.onosproject.net.packet.PacketProviderRegistry; |
| 49 | import org.onosproject.net.packet.PacketProviderService; |
| 50 | import org.onosproject.net.provider.AbstractProvider; |
| 51 | import org.onosproject.net.provider.ProviderId; |
| 52 | import org.osgi.service.component.ComponentContext; |
| 53 | import org.slf4j.Logger; |
| 54 | |
| 55 | /** |
| 56 | * Provider which 1) intercepts network-bound messages from the core, and 2) |
| 57 | * generates PacketEvents at some tunable rate. To be used for benchmarking |
| 58 | * only. |
| 59 | */ |
| 60 | @Component(immediate = true) |
| 61 | public class NullPacketProvider extends AbstractProvider implements |
| 62 | PacketProvider { |
| 63 | |
| 64 | private final Logger log = getLogger(getClass()); |
| 65 | |
| 66 | // Default packetEvent generation rate (in packets/sec) |
| 67 | // If 0, we are just a sink for network-bound packets |
| 68 | private static final int DEFAULT_RATE = 5; |
| 69 | // arbitrary host "destination" |
| 70 | private static final int DESTHOST = 5; |
| 71 | |
| 72 | private PacketProviderService providerService; |
| 73 | |
| 74 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 75 | protected PacketProviderRegistry providerRegistry; |
| 76 | |
| 77 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 78 | protected DeviceService deviceService; |
| 79 | |
| 80 | // Rate to generate PacketEvents, per second |
| 81 | @Property(name = "pktRate", intValue = DEFAULT_RATE, |
| 82 | label = "Rate of PacketEvent generation") |
| 83 | private int pktRate = DEFAULT_RATE; |
| 84 | |
| 85 | private ExecutorService packetDriver = Executors.newFixedThreadPool(1, |
| 86 | namedThreads("null-packet-driver")); |
| 87 | |
| 88 | public NullPacketProvider() { |
| 89 | super(new ProviderId("null", "org.onosproject.provider.nil")); |
| 90 | } |
| 91 | |
| 92 | @Activate |
| 93 | public void activate(ComponentContext context) { |
| 94 | providerService = providerRegistry.register(this); |
| 95 | if (!modified(context)) { |
| 96 | packetDriver.submit(new PacketDriver()); |
| 97 | } |
| 98 | log.info("started"); |
| 99 | } |
| 100 | |
| 101 | @Deactivate |
| 102 | public void deactivate(ComponentContext context) { |
| 103 | try { |
| 104 | packetDriver.awaitTermination(1000, TimeUnit.MILLISECONDS); |
| 105 | } catch (InterruptedException e) { |
| 106 | log.error("PacketDriver did not terminate"); |
| 107 | } |
| 108 | packetDriver.shutdownNow(); |
| 109 | providerRegistry.unregister(this); |
| 110 | log.info("stopped"); |
| 111 | } |
| 112 | |
| 113 | @Modified |
| 114 | public boolean modified(ComponentContext context) { |
| 115 | if (context == null) { |
| 116 | log.info("No configuration change, using defaults: pktRate={}", |
| 117 | DEFAULT_RATE); |
| 118 | return false; |
| 119 | } |
| 120 | Dictionary<?, ?> properties = context.getProperties(); |
| 121 | |
| 122 | int newRate; |
| 123 | try { |
| 124 | String s = String.valueOf(properties.get("pktRate")); |
| 125 | newRate = isNullOrEmpty(s) ? pktRate : Integer.valueOf(s); |
| 126 | } catch (Exception e) { |
| 127 | log.warn(e.getMessage()); |
| 128 | newRate = pktRate; |
| 129 | } |
| 130 | |
| 131 | if (newRate != pktRate) { |
| 132 | pktRate = newRate; |
| 133 | packetDriver.submit(new PacketDriver()); |
| 134 | log.info("Using new settings: pktRate={}", pktRate); |
| 135 | return true; |
| 136 | } |
| 137 | return false; |
| 138 | } |
| 139 | |
| 140 | @Override |
| 141 | public void emit(OutboundPacket packet) { |
| 142 | // We don't have a network to emit to. Keep a counter here, maybe? |
| 143 | } |
| 144 | |
| 145 | /** |
| 146 | * Generates packet events at a given rate. |
| 147 | */ |
| 148 | private class PacketDriver implements Runnable { |
| 149 | |
| 150 | // time between event firing, in milliseconds |
| 151 | int pktInterval; |
| 152 | // filler echo request |
| 153 | ICMP icmp; |
| 154 | Ethernet eth; |
| 155 | |
| 156 | public PacketDriver() { |
| 157 | pktInterval = 1000 / pktRate; |
| 158 | icmp = new ICMP(); |
| 159 | icmp.setIcmpType((byte) 8).setIcmpCode((byte) 0) |
| 160 | .setChecksum((short) 0); |
| 161 | eth = new Ethernet(); |
| 162 | eth.setEtherType(Ethernet.TYPE_IPV4); |
| 163 | eth.setPayload(icmp); |
| 164 | } |
| 165 | |
| 166 | @Override |
| 167 | public void run() { |
| 168 | log.info("PacketDriver started"); |
| 169 | while (!packetDriver.isShutdown()) { |
| 170 | for (Device dev : deviceService.getDevices()) { |
| 171 | sendEvents(dev); |
| 172 | } |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | private void sendEvents(Device dev) { |
| 177 | // make it look like things came from ports attached to hosts |
| 178 | for (int i = 0; i < 4; i++) { |
| 179 | eth.setSourceMACAddress("00:00:10:00:00:0" + i) |
| 180 | .setDestinationMACAddress("00:00:10:00:00:0" + DESTHOST); |
| 181 | InboundPacket inPkt = new DefaultInboundPacket( |
| 182 | new ConnectPoint(dev.id(), PortNumber.portNumber(i)), |
| 183 | eth, ByteBuffer.wrap(eth.serialize())); |
| 184 | PacketContext pctx = new NullPacketContext( |
| 185 | System.currentTimeMillis(), inPkt, null, false); |
| 186 | providerService.processPacket(pctx); |
| 187 | delay(pktInterval); |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | } |
| 192 | |
| 193 | /** |
| 194 | * Minimal PacketContext to make core + applications happy. |
| 195 | */ |
| 196 | private class NullPacketContext extends DefaultPacketContext { |
| 197 | |
| 198 | public NullPacketContext(long time, InboundPacket inPkt, |
| 199 | OutboundPacket outPkt, boolean block) { |
| 200 | super(time, inPkt, outPkt, block); |
| 201 | } |
| 202 | |
| 203 | @Override |
| 204 | public void send() { |
| 205 | // We don't send anything out. |
| 206 | } |
| 207 | |
| 208 | } |
| 209 | |
| 210 | } |