Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2014-present Open Networking Foundation |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 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 | */ |
Brian O'Connor | abafb50 | 2014-12-02 22:26:20 -0800 | [diff] [blame] | 16 | package org.onosproject.store.packet.impl; |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 17 | |
Brian O'Connor | 21b028e | 2015-10-08 22:50:02 -0700 | [diff] [blame] | 18 | import com.google.common.collect.ImmutableSet; |
Thomas Vachuska | 7f171b2 | 2015-08-21 12:49:08 -0700 | [diff] [blame] | 19 | import com.google.common.collect.Lists; |
Brian O'Connor | 21b028e | 2015-10-08 22:50:02 -0700 | [diff] [blame] | 20 | import com.google.common.collect.Sets; |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 21 | import org.apache.felix.scr.annotations.Activate; |
| 22 | import org.apache.felix.scr.annotations.Component; |
| 23 | import org.apache.felix.scr.annotations.Deactivate; |
sangyun-han | ad84e0c | 2016-02-19 18:30:03 +0900 | [diff] [blame] | 24 | import org.apache.felix.scr.annotations.Modified; |
| 25 | import org.apache.felix.scr.annotations.Property; |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 26 | import org.apache.felix.scr.annotations.Reference; |
| 27 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
| 28 | import org.apache.felix.scr.annotations.Service; |
Jonathan Hart | fc3f6de | 2016-09-19 17:55:15 -0700 | [diff] [blame] | 29 | import org.onlab.util.KryoNamespace; |
sangyun-han | 9f0af2d | 2016-08-04 13:04:59 +0900 | [diff] [blame] | 30 | import org.onosproject.cfg.ComponentConfigService; |
Brian O'Connor | abafb50 | 2014-12-02 22:26:20 -0800 | [diff] [blame] | 31 | import org.onosproject.cluster.ClusterService; |
| 32 | import org.onosproject.cluster.NodeId; |
| 33 | import org.onosproject.mastership.MastershipService; |
Thomas Vachuska | 27bee09 | 2015-06-23 19:03:10 -0700 | [diff] [blame] | 34 | import org.onosproject.net.flow.TrafficSelector; |
Brian O'Connor | abafb50 | 2014-12-02 22:26:20 -0800 | [diff] [blame] | 35 | import org.onosproject.net.packet.OutboundPacket; |
| 36 | import org.onosproject.net.packet.PacketEvent; |
| 37 | import org.onosproject.net.packet.PacketEvent.Type; |
Jonathan Hart | fc3f6de | 2016-09-19 17:55:15 -0700 | [diff] [blame] | 38 | import org.onosproject.net.packet.PacketPriority; |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 39 | import org.onosproject.net.packet.PacketRequest; |
Brian O'Connor | abafb50 | 2014-12-02 22:26:20 -0800 | [diff] [blame] | 40 | import org.onosproject.net.packet.PacketStore; |
| 41 | import org.onosproject.net.packet.PacketStoreDelegate; |
| 42 | import org.onosproject.store.AbstractStore; |
| 43 | import org.onosproject.store.cluster.messaging.ClusterCommunicationService; |
Brian O'Connor | abafb50 | 2014-12-02 22:26:20 -0800 | [diff] [blame] | 44 | import org.onosproject.store.cluster.messaging.MessageSubject; |
| 45 | import org.onosproject.store.serializers.KryoNamespaces; |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 46 | import org.onosproject.store.service.ConsistentMap; |
| 47 | import org.onosproject.store.service.Serializer; |
| 48 | import org.onosproject.store.service.StorageService; |
sangyun-han | ad84e0c | 2016-02-19 18:30:03 +0900 | [diff] [blame] | 49 | import org.osgi.service.component.ComponentContext; |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 50 | import org.slf4j.Logger; |
| 51 | |
sangyun-han | ad84e0c | 2016-02-19 18:30:03 +0900 | [diff] [blame] | 52 | import java.util.Dictionary; |
Thomas Vachuska | 7f171b2 | 2015-08-21 12:49:08 -0700 | [diff] [blame] | 53 | import java.util.List; |
Jonathan Hart | fc3f6de | 2016-09-19 17:55:15 -0700 | [diff] [blame] | 54 | import java.util.Objects; |
sangyun-han | ad84e0c | 2016-02-19 18:30:03 +0900 | [diff] [blame] | 55 | import java.util.Properties; |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 56 | import java.util.Set; |
Brian O'Connor | 5eb77c8 | 2015-03-02 18:09:39 -0800 | [diff] [blame] | 57 | import java.util.concurrent.ExecutorService; |
| 58 | import java.util.concurrent.Executors; |
Brian O'Connor | 21b028e | 2015-10-08 22:50:02 -0700 | [diff] [blame] | 59 | import java.util.concurrent.atomic.AtomicBoolean; |
Brian O'Connor | 5eb77c8 | 2015-03-02 18:09:39 -0800 | [diff] [blame] | 60 | |
sangyun-han | ad84e0c | 2016-02-19 18:30:03 +0900 | [diff] [blame] | 61 | import static com.google.common.base.Preconditions.checkArgument; |
| 62 | import static com.google.common.base.Strings.isNullOrEmpty; |
Yuta HIGUCHI | 1624df1 | 2016-07-21 16:54:33 -0700 | [diff] [blame] | 63 | import static java.util.concurrent.Executors.newFixedThreadPool; |
sangyun-han | ad84e0c | 2016-02-19 18:30:03 +0900 | [diff] [blame] | 64 | import static org.onlab.util.Tools.get; |
Brian O'Connor | 5eb77c8 | 2015-03-02 18:09:39 -0800 | [diff] [blame] | 65 | import static org.onlab.util.Tools.groupedThreads; |
| 66 | import static org.slf4j.LoggerFactory.getLogger; |
| 67 | |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 68 | /** |
| 69 | * Distributed packet store implementation allowing packets to be sent to |
| 70 | * remote instances. |
| 71 | */ |
| 72 | @Component(immediate = true) |
| 73 | @Service |
| 74 | public class DistributedPacketStore |
| 75 | extends AbstractStore<PacketEvent, PacketStoreDelegate> |
| 76 | implements PacketStore { |
| 77 | |
| 78 | private final Logger log = getLogger(getClass()); |
| 79 | |
sangyun-han | ad84e0c | 2016-02-19 18:30:03 +0900 | [diff] [blame] | 80 | private static final String FORMAT = "Setting: messageHandlerThreadPoolSize={}"; |
Madan Jampani | 2af244a | 2015-02-22 13:12:01 -0800 | [diff] [blame] | 81 | |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 82 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Thomas Vachuska | ff96523 | 2015-03-17 14:10:52 -0700 | [diff] [blame] | 83 | protected MastershipService mastershipService; |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 84 | |
| 85 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Thomas Vachuska | ff96523 | 2015-03-17 14:10:52 -0700 | [diff] [blame] | 86 | protected ClusterService clusterService; |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 87 | |
| 88 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Thomas Vachuska | ff96523 | 2015-03-17 14:10:52 -0700 | [diff] [blame] | 89 | protected ClusterCommunicationService communicationService; |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 90 | |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 91 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 92 | protected StorageService storageService; |
| 93 | |
sangyun-han | 9f0af2d | 2016-08-04 13:04:59 +0900 | [diff] [blame] | 94 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 95 | protected ComponentConfigService cfgService; |
| 96 | |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 97 | private PacketRequestTracker tracker; |
| 98 | |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 99 | private static final MessageSubject PACKET_OUT_SUBJECT = |
| 100 | new MessageSubject("packet-out"); |
| 101 | |
Jordan Halterman | c6c6ef2 | 2017-08-20 17:11:41 -0700 | [diff] [blame] | 102 | private static final Serializer SERIALIZER = Serializer.using(KryoNamespaces.API); |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 103 | |
Madan Jampani | 2af244a | 2015-02-22 13:12:01 -0800 | [diff] [blame] | 104 | private ExecutorService messageHandlingExecutor; |
| 105 | |
sangyun-han | ad84e0c | 2016-02-19 18:30:03 +0900 | [diff] [blame] | 106 | private static final int DEFAULT_MESSAGE_HANDLER_THREAD_POOL_SIZE = 4; |
| 107 | @Property(name = "messageHandlerThreadPoolSize", intValue = DEFAULT_MESSAGE_HANDLER_THREAD_POOL_SIZE, |
| 108 | label = "Size of thread pool to assign message handler") |
| 109 | private static int messageHandlerThreadPoolSize = DEFAULT_MESSAGE_HANDLER_THREAD_POOL_SIZE; |
| 110 | |
| 111 | private static final int MAX_BACKOFF = 50; |
| 112 | |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 113 | @Activate |
sangyun-han | 9f0af2d | 2016-08-04 13:04:59 +0900 | [diff] [blame] | 114 | public void activate(ComponentContext context) { |
| 115 | cfgService.registerProperties(getClass()); |
| 116 | |
| 117 | modified(context); |
| 118 | |
Thomas Vachuska | 27bee09 | 2015-06-23 19:03:10 -0700 | [diff] [blame] | 119 | messageHandlingExecutor = Executors.newFixedThreadPool( |
sangyun-han | ad84e0c | 2016-02-19 18:30:03 +0900 | [diff] [blame] | 120 | messageHandlerThreadPoolSize, |
HIGUCHI Yuta | d9e0105 | 2016-04-14 09:31:42 -0700 | [diff] [blame] | 121 | groupedThreads("onos/store/packet", "message-handlers", log)); |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 122 | |
Madan Jampani | 01e05fb | 2015-08-13 13:29:36 -0700 | [diff] [blame] | 123 | communicationService.<OutboundPacket>addSubscriber(PACKET_OUT_SUBJECT, |
| 124 | SERIALIZER::decode, |
| 125 | packet -> notifyDelegate(new PacketEvent(Type.EMIT, packet)), |
| 126 | messageHandlingExecutor); |
Madan Jampani | 2af244a | 2015-02-22 13:12:01 -0800 | [diff] [blame] | 127 | |
Thomas Vachuska | 27bee09 | 2015-06-23 19:03:10 -0700 | [diff] [blame] | 128 | tracker = new PacketRequestTracker(); |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 129 | |
Madan Jampani | 2af244a | 2015-02-22 13:12:01 -0800 | [diff] [blame] | 130 | log.info("Started"); |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 131 | } |
| 132 | |
| 133 | @Deactivate |
| 134 | public void deactivate() { |
sangyun-han | 9f0af2d | 2016-08-04 13:04:59 +0900 | [diff] [blame] | 135 | cfgService.unregisterProperties(getClass(), false); |
Madan Jampani | 2af244a | 2015-02-22 13:12:01 -0800 | [diff] [blame] | 136 | communicationService.removeSubscriber(PACKET_OUT_SUBJECT); |
| 137 | messageHandlingExecutor.shutdown(); |
Brian O'Connor | 21b028e | 2015-10-08 22:50:02 -0700 | [diff] [blame] | 138 | tracker = null; |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 139 | log.info("Stopped"); |
| 140 | } |
| 141 | |
sangyun-han | ad84e0c | 2016-02-19 18:30:03 +0900 | [diff] [blame] | 142 | @Modified |
| 143 | public void modified(ComponentContext context) { |
| 144 | Dictionary<?, ?> properties = context != null ? context.getProperties() : new Properties(); |
| 145 | |
| 146 | int newMessageHandlerThreadPoolSize; |
| 147 | |
| 148 | try { |
| 149 | String s = get(properties, "messageHandlerThreadPoolSize"); |
| 150 | |
| 151 | newMessageHandlerThreadPoolSize = |
| 152 | isNullOrEmpty(s) ? messageHandlerThreadPoolSize : Integer.parseInt(s.trim()); |
| 153 | |
| 154 | } catch (NumberFormatException e) { |
| 155 | log.warn(e.getMessage()); |
| 156 | newMessageHandlerThreadPoolSize = messageHandlerThreadPoolSize; |
| 157 | } |
| 158 | |
| 159 | // Any change in the following parameters implies thread pool restart |
| 160 | if (newMessageHandlerThreadPoolSize != messageHandlerThreadPoolSize) { |
| 161 | setMessageHandlerThreadPoolSize(newMessageHandlerThreadPoolSize); |
| 162 | restartMessageHandlerThreadPool(); |
| 163 | } |
| 164 | |
| 165 | log.info(FORMAT, messageHandlerThreadPoolSize); |
| 166 | } |
| 167 | |
| 168 | |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 169 | @Override |
| 170 | public void emit(OutboundPacket packet) { |
| 171 | NodeId myId = clusterService.getLocalNode().id(); |
| 172 | NodeId master = mastershipService.getMasterFor(packet.sendThrough()); |
| 173 | |
Jonathan Hart | 7466d61 | 2014-11-24 17:09:53 -0800 | [diff] [blame] | 174 | if (master == null) { |
| 175 | return; |
| 176 | } |
| 177 | |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 178 | if (myId.equals(master)) { |
| 179 | notifyDelegate(new PacketEvent(Type.EMIT, packet)); |
| 180 | return; |
| 181 | } |
| 182 | |
Madan Jampani | 01e05fb | 2015-08-13 13:29:36 -0700 | [diff] [blame] | 183 | communicationService.unicast(packet, PACKET_OUT_SUBJECT, SERIALIZER::encode, master) |
| 184 | .whenComplete((r, error) -> { |
| 185 | if (error != null) { |
| 186 | log.warn("Failed to send packet-out to {}", master, error); |
| 187 | } |
| 188 | }); |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 189 | } |
| 190 | |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 191 | @Override |
Brian O'Connor | 21b028e | 2015-10-08 22:50:02 -0700 | [diff] [blame] | 192 | public void requestPackets(PacketRequest request) { |
| 193 | tracker.add(request); |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 194 | } |
| 195 | |
| 196 | @Override |
Brian O'Connor | 21b028e | 2015-10-08 22:50:02 -0700 | [diff] [blame] | 197 | public void cancelPackets(PacketRequest request) { |
| 198 | tracker.remove(request); |
Thomas Vachuska | 27bee09 | 2015-06-23 19:03:10 -0700 | [diff] [blame] | 199 | } |
| 200 | |
| 201 | @Override |
Thomas Vachuska | 7f171b2 | 2015-08-21 12:49:08 -0700 | [diff] [blame] | 202 | public List<PacketRequest> existingRequests() { |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 203 | return tracker.requests(); |
| 204 | } |
| 205 | |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 206 | private final class PacketRequestTracker { |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 207 | |
Jonathan Hart | fc3f6de | 2016-09-19 17:55:15 -0700 | [diff] [blame] | 208 | private ConsistentMap<RequestKey, Set<PacketRequest>> requests; |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 209 | |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 210 | private PacketRequestTracker() { |
Jonathan Hart | fc3f6de | 2016-09-19 17:55:15 -0700 | [diff] [blame] | 211 | requests = storageService.<RequestKey, Set<PacketRequest>>consistentMapBuilder() |
Thomas Vachuska | 27bee09 | 2015-06-23 19:03:10 -0700 | [diff] [blame] | 212 | .withName("onos-packet-requests") |
Jonathan Hart | fc3f6de | 2016-09-19 17:55:15 -0700 | [diff] [blame] | 213 | .withSerializer(Serializer.using(KryoNamespace.newBuilder() |
| 214 | .register(KryoNamespaces.API) |
| 215 | .register(RequestKey.class) |
| 216 | .build())) |
Thomas Vachuska | 27bee09 | 2015-06-23 19:03:10 -0700 | [diff] [blame] | 217 | .build(); |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 218 | } |
| 219 | |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 220 | private void add(PacketRequest request) { |
Madan Jampani | c637188 | 2016-06-03 21:30:17 -0700 | [diff] [blame] | 221 | AtomicBoolean firstRequest = addInternal(request); |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 222 | if (firstRequest.get() && delegate != null) { |
| 223 | // The instance that makes the first request will push to all devices |
| 224 | delegate.requestPackets(request); |
| 225 | } |
| 226 | } |
| 227 | |
| 228 | private AtomicBoolean addInternal(PacketRequest request) { |
Brian O'Connor | 21b028e | 2015-10-08 22:50:02 -0700 | [diff] [blame] | 229 | AtomicBoolean firstRequest = new AtomicBoolean(false); |
Jonathan Hart | fc3f6de | 2016-09-19 17:55:15 -0700 | [diff] [blame] | 230 | requests.compute(key(request), (s, existingRequests) -> { |
Madan Jampani | ed969ba | 2016-07-14 10:17:49 -0700 | [diff] [blame] | 231 | // Reset to false just in case this is a retry due to |
| 232 | // ConcurrentModificationException |
| 233 | firstRequest.set(false); |
Brian O'Connor | 21b028e | 2015-10-08 22:50:02 -0700 | [diff] [blame] | 234 | if (existingRequests == null) { |
| 235 | firstRequest.set(true); |
| 236 | return ImmutableSet.of(request); |
| 237 | } else if (!existingRequests.contains(request)) { |
Hyunsun Moon | b5f4f27 | 2016-08-03 14:53:46 -0700 | [diff] [blame] | 238 | firstRequest.set(true); |
Brian O'Connor | 21b028e | 2015-10-08 22:50:02 -0700 | [diff] [blame] | 239 | return ImmutableSet.<PacketRequest>builder() |
| 240 | .addAll(existingRequests) |
| 241 | .add(request) |
| 242 | .build(); |
| 243 | } else { |
| 244 | return existingRequests; |
| 245 | } |
| 246 | }); |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 247 | return firstRequest; |
| 248 | } |
Brian O'Connor | 21b028e | 2015-10-08 22:50:02 -0700 | [diff] [blame] | 249 | |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 250 | private void remove(PacketRequest request) { |
Madan Jampani | c637188 | 2016-06-03 21:30:17 -0700 | [diff] [blame] | 251 | AtomicBoolean removedLast = removeInternal(request); |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 252 | if (removedLast.get() && delegate != null) { |
| 253 | // The instance that removes the last request will remove from all devices |
| 254 | delegate.cancelPackets(request); |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 255 | } |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 256 | } |
| 257 | |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 258 | private AtomicBoolean removeInternal(PacketRequest request) { |
Brian O'Connor | 21b028e | 2015-10-08 22:50:02 -0700 | [diff] [blame] | 259 | AtomicBoolean removedLast = new AtomicBoolean(false); |
Jonathan Hart | fc3f6de | 2016-09-19 17:55:15 -0700 | [diff] [blame] | 260 | requests.computeIfPresent(key(request), (s, existingRequests) -> { |
Madan Jampani | ed969ba | 2016-07-14 10:17:49 -0700 | [diff] [blame] | 261 | // Reset to false just in case this is a retry due to |
| 262 | // ConcurrentModificationException |
| 263 | removedLast.set(false); |
Brian O'Connor | 21b028e | 2015-10-08 22:50:02 -0700 | [diff] [blame] | 264 | if (existingRequests.contains(request)) { |
| 265 | Set<PacketRequest> newRequests = Sets.newHashSet(existingRequests); |
| 266 | newRequests.remove(request); |
| 267 | if (newRequests.size() > 0) { |
| 268 | return ImmutableSet.copyOf(newRequests); |
| 269 | } else { |
| 270 | removedLast.set(true); |
| 271 | return null; |
| 272 | } |
| 273 | } else { |
| 274 | return existingRequests; |
| 275 | } |
| 276 | }); |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 277 | return removedLast; |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 278 | } |
| 279 | |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 280 | private List<PacketRequest> requests() { |
Thomas Vachuska | 7f171b2 | 2015-08-21 12:49:08 -0700 | [diff] [blame] | 281 | List<PacketRequest> list = Lists.newArrayList(); |
| 282 | requests.values().forEach(v -> list.addAll(v.value())); |
| 283 | list.sort((o1, o2) -> o1.priority().priorityValue() - o2.priority().priorityValue()); |
| 284 | return list; |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 285 | } |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 286 | } |
sangyun-han | ad84e0c | 2016-02-19 18:30:03 +0900 | [diff] [blame] | 287 | |
| 288 | /** |
Jonathan Hart | fc3f6de | 2016-09-19 17:55:15 -0700 | [diff] [blame] | 289 | * Creates a new request key from a packet request. |
| 290 | * |
| 291 | * @param request packet request |
| 292 | * @return request key |
| 293 | */ |
| 294 | private static RequestKey key(PacketRequest request) { |
| 295 | return new RequestKey(request.selector(), request.priority()); |
| 296 | } |
| 297 | |
| 298 | /** |
| 299 | * Key of a packet request. |
| 300 | */ |
| 301 | private static final class RequestKey { |
| 302 | private final TrafficSelector selector; |
| 303 | private final PacketPriority priority; |
| 304 | |
| 305 | private RequestKey(TrafficSelector selector, PacketPriority priority) { |
| 306 | this.selector = selector; |
| 307 | this.priority = priority; |
| 308 | } |
| 309 | |
| 310 | @Override |
| 311 | public int hashCode() { |
| 312 | return Objects.hash(selector, priority); |
| 313 | } |
| 314 | |
| 315 | @Override |
| 316 | public boolean equals(Object other) { |
| 317 | if (other == this) { |
| 318 | return true; |
| 319 | } |
| 320 | |
| 321 | if (!(other instanceof RequestKey)) { |
| 322 | return false; |
| 323 | } |
| 324 | |
| 325 | RequestKey that = (RequestKey) other; |
| 326 | |
| 327 | return Objects.equals(selector, that.selector) && |
| 328 | Objects.equals(priority, that.priority); |
| 329 | } |
| 330 | } |
| 331 | |
| 332 | /** |
sangyun-han | ad84e0c | 2016-02-19 18:30:03 +0900 | [diff] [blame] | 333 | * Sets thread pool size of message handler. |
| 334 | * |
| 335 | * @param poolSize |
| 336 | */ |
| 337 | private void setMessageHandlerThreadPoolSize(int poolSize) { |
| 338 | checkArgument(poolSize >= 0, "Message handler pool size must be 0 or more"); |
| 339 | messageHandlerThreadPoolSize = poolSize; |
| 340 | } |
| 341 | |
| 342 | /** |
| 343 | * Restarts thread pool of message handler. |
| 344 | */ |
| 345 | private void restartMessageHandlerThreadPool() { |
| 346 | ExecutorService prevExecutor = messageHandlingExecutor; |
Yuta HIGUCHI | 1624df1 | 2016-07-21 16:54:33 -0700 | [diff] [blame] | 347 | messageHandlingExecutor = newFixedThreadPool(getMessageHandlerThreadPoolSize(), |
| 348 | groupedThreads("DistPktStore", "messageHandling-%d", log)); |
sangyun-han | ad84e0c | 2016-02-19 18:30:03 +0900 | [diff] [blame] | 349 | prevExecutor.shutdown(); |
| 350 | } |
| 351 | |
| 352 | /** |
| 353 | * Gets current thread pool size of message handler. |
| 354 | * |
| 355 | * @return messageHandlerThreadPoolSize |
| 356 | */ |
| 357 | private int getMessageHandlerThreadPoolSize() { |
| 358 | return messageHandlerThreadPoolSize; |
| 359 | } |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 360 | } |