Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 1 | /* |
Brian O'Connor | 5ab426f | 2016-04-09 01:19:45 -0700 | [diff] [blame] | 2 | * Copyright 2014-present Open Networking Laboratory |
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; |
Brian O'Connor | 5eb77c8 | 2015-03-02 18:09:39 -0800 | [diff] [blame] | 29 | import org.onlab.util.KryoNamespace; |
Brian O'Connor | abafb50 | 2014-12-02 22:26:20 -0800 | [diff] [blame] | 30 | import org.onosproject.cluster.ClusterService; |
| 31 | import org.onosproject.cluster.NodeId; |
| 32 | import org.onosproject.mastership.MastershipService; |
Thomas Vachuska | 27bee09 | 2015-06-23 19:03:10 -0700 | [diff] [blame] | 33 | import org.onosproject.net.flow.TrafficSelector; |
Brian O'Connor | abafb50 | 2014-12-02 22:26:20 -0800 | [diff] [blame] | 34 | import org.onosproject.net.packet.OutboundPacket; |
| 35 | import org.onosproject.net.packet.PacketEvent; |
| 36 | import org.onosproject.net.packet.PacketEvent.Type; |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 37 | import org.onosproject.net.packet.PacketRequest; |
Brian O'Connor | abafb50 | 2014-12-02 22:26:20 -0800 | [diff] [blame] | 38 | import org.onosproject.net.packet.PacketStore; |
| 39 | import org.onosproject.net.packet.PacketStoreDelegate; |
| 40 | import org.onosproject.store.AbstractStore; |
| 41 | import org.onosproject.store.cluster.messaging.ClusterCommunicationService; |
Brian O'Connor | abafb50 | 2014-12-02 22:26:20 -0800 | [diff] [blame] | 42 | import org.onosproject.store.cluster.messaging.MessageSubject; |
| 43 | import org.onosproject.store.serializers.KryoNamespaces; |
| 44 | import org.onosproject.store.serializers.KryoSerializer; |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 45 | import org.onosproject.store.service.ConsistentMap; |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 46 | import org.onosproject.store.service.ConsistentMapException; |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 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; |
sangyun-han | ad84e0c | 2016-02-19 18:30:03 +0900 | [diff] [blame] | 54 | import java.util.Properties; |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 55 | import java.util.Set; |
Brian O'Connor | 5eb77c8 | 2015-03-02 18:09:39 -0800 | [diff] [blame] | 56 | import java.util.concurrent.ExecutorService; |
| 57 | import java.util.concurrent.Executors; |
Brian O'Connor | 21b028e | 2015-10-08 22:50:02 -0700 | [diff] [blame] | 58 | import java.util.concurrent.atomic.AtomicBoolean; |
Brian O'Connor | 5eb77c8 | 2015-03-02 18:09:39 -0800 | [diff] [blame] | 59 | |
sangyun-han | ad84e0c | 2016-02-19 18:30:03 +0900 | [diff] [blame] | 60 | import static com.google.common.base.Preconditions.checkArgument; |
| 61 | import static com.google.common.base.Strings.isNullOrEmpty; |
| 62 | import static org.onlab.util.Tools.get; |
Brian O'Connor | 5eb77c8 | 2015-03-02 18:09:39 -0800 | [diff] [blame] | 63 | import static org.onlab.util.Tools.groupedThreads; |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 64 | import static org.onlab.util.Tools.retryable; |
Brian O'Connor | 5eb77c8 | 2015-03-02 18:09:39 -0800 | [diff] [blame] | 65 | import static org.slf4j.LoggerFactory.getLogger; |
| 66 | |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 67 | /** |
| 68 | * Distributed packet store implementation allowing packets to be sent to |
| 69 | * remote instances. |
| 70 | */ |
| 71 | @Component(immediate = true) |
| 72 | @Service |
| 73 | public class DistributedPacketStore |
| 74 | extends AbstractStore<PacketEvent, PacketStoreDelegate> |
| 75 | implements PacketStore { |
| 76 | |
| 77 | private final Logger log = getLogger(getClass()); |
| 78 | |
sangyun-han | ad84e0c | 2016-02-19 18:30:03 +0900 | [diff] [blame] | 79 | private static final String FORMAT = "Setting: messageHandlerThreadPoolSize={}"; |
Madan Jampani | 2af244a | 2015-02-22 13:12:01 -0800 | [diff] [blame] | 80 | |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 81 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Thomas Vachuska | ff96523 | 2015-03-17 14:10:52 -0700 | [diff] [blame] | 82 | protected MastershipService mastershipService; |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 83 | |
| 84 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Thomas Vachuska | ff96523 | 2015-03-17 14:10:52 -0700 | [diff] [blame] | 85 | protected ClusterService clusterService; |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 86 | |
| 87 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
Thomas Vachuska | ff96523 | 2015-03-17 14:10:52 -0700 | [diff] [blame] | 88 | protected ClusterCommunicationService communicationService; |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 89 | |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 90 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 91 | protected StorageService storageService; |
| 92 | |
| 93 | private PacketRequestTracker tracker; |
| 94 | |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 95 | private static final MessageSubject PACKET_OUT_SUBJECT = |
| 96 | new MessageSubject("packet-out"); |
| 97 | |
| 98 | private static final KryoSerializer SERIALIZER = new KryoSerializer() { |
| 99 | @Override |
| 100 | protected void setupKryoPool() { |
| 101 | serializerPool = KryoNamespace.newBuilder() |
| 102 | .register(KryoNamespaces.API) |
Yuta HIGUCHI | 91768e3 | 2014-11-22 05:06:35 -0800 | [diff] [blame] | 103 | .nextId(KryoNamespaces.BEGIN_USER_CUSTOM_ID) |
| 104 | .build(); |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 105 | } |
| 106 | }; |
| 107 | |
Madan Jampani | 2af244a | 2015-02-22 13:12:01 -0800 | [diff] [blame] | 108 | private ExecutorService messageHandlingExecutor; |
| 109 | |
sangyun-han | ad84e0c | 2016-02-19 18:30:03 +0900 | [diff] [blame] | 110 | private static final int DEFAULT_MESSAGE_HANDLER_THREAD_POOL_SIZE = 4; |
| 111 | @Property(name = "messageHandlerThreadPoolSize", intValue = DEFAULT_MESSAGE_HANDLER_THREAD_POOL_SIZE, |
| 112 | label = "Size of thread pool to assign message handler") |
| 113 | private static int messageHandlerThreadPoolSize = DEFAULT_MESSAGE_HANDLER_THREAD_POOL_SIZE; |
| 114 | |
| 115 | private static final int MAX_BACKOFF = 50; |
| 116 | |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 117 | @Activate |
| 118 | public void activate() { |
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() { |
Madan Jampani | 2af244a | 2015-02-22 13:12:01 -0800 | [diff] [blame] | 135 | communicationService.removeSubscriber(PACKET_OUT_SUBJECT); |
| 136 | messageHandlingExecutor.shutdown(); |
Brian O'Connor | 21b028e | 2015-10-08 22:50:02 -0700 | [diff] [blame] | 137 | tracker = null; |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 138 | log.info("Stopped"); |
| 139 | } |
| 140 | |
sangyun-han | ad84e0c | 2016-02-19 18:30:03 +0900 | [diff] [blame] | 141 | @Modified |
| 142 | public void modified(ComponentContext context) { |
| 143 | Dictionary<?, ?> properties = context != null ? context.getProperties() : new Properties(); |
| 144 | |
| 145 | int newMessageHandlerThreadPoolSize; |
| 146 | |
| 147 | try { |
| 148 | String s = get(properties, "messageHandlerThreadPoolSize"); |
| 149 | |
| 150 | newMessageHandlerThreadPoolSize = |
| 151 | isNullOrEmpty(s) ? messageHandlerThreadPoolSize : Integer.parseInt(s.trim()); |
| 152 | |
| 153 | } catch (NumberFormatException e) { |
| 154 | log.warn(e.getMessage()); |
| 155 | newMessageHandlerThreadPoolSize = messageHandlerThreadPoolSize; |
| 156 | } |
| 157 | |
| 158 | // Any change in the following parameters implies thread pool restart |
| 159 | if (newMessageHandlerThreadPoolSize != messageHandlerThreadPoolSize) { |
| 160 | setMessageHandlerThreadPoolSize(newMessageHandlerThreadPoolSize); |
| 161 | restartMessageHandlerThreadPool(); |
| 162 | } |
| 163 | |
| 164 | log.info(FORMAT, messageHandlerThreadPoolSize); |
| 165 | } |
| 166 | |
| 167 | |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 168 | @Override |
| 169 | public void emit(OutboundPacket packet) { |
| 170 | NodeId myId = clusterService.getLocalNode().id(); |
| 171 | NodeId master = mastershipService.getMasterFor(packet.sendThrough()); |
| 172 | |
Jonathan Hart | 7466d61 | 2014-11-24 17:09:53 -0800 | [diff] [blame] | 173 | if (master == null) { |
| 174 | return; |
| 175 | } |
| 176 | |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 177 | if (myId.equals(master)) { |
| 178 | notifyDelegate(new PacketEvent(Type.EMIT, packet)); |
| 179 | return; |
| 180 | } |
| 181 | |
Madan Jampani | 01e05fb | 2015-08-13 13:29:36 -0700 | [diff] [blame] | 182 | communicationService.unicast(packet, PACKET_OUT_SUBJECT, SERIALIZER::encode, master) |
| 183 | .whenComplete((r, error) -> { |
| 184 | if (error != null) { |
| 185 | log.warn("Failed to send packet-out to {}", master, error); |
| 186 | } |
| 187 | }); |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 188 | } |
| 189 | |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 190 | @Override |
Brian O'Connor | 21b028e | 2015-10-08 22:50:02 -0700 | [diff] [blame] | 191 | public void requestPackets(PacketRequest request) { |
| 192 | tracker.add(request); |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 193 | } |
| 194 | |
| 195 | @Override |
Brian O'Connor | 21b028e | 2015-10-08 22:50:02 -0700 | [diff] [blame] | 196 | public void cancelPackets(PacketRequest request) { |
| 197 | tracker.remove(request); |
Thomas Vachuska | 27bee09 | 2015-06-23 19:03:10 -0700 | [diff] [blame] | 198 | } |
| 199 | |
| 200 | @Override |
Thomas Vachuska | 7f171b2 | 2015-08-21 12:49:08 -0700 | [diff] [blame] | 201 | public List<PacketRequest> existingRequests() { |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 202 | return tracker.requests(); |
| 203 | } |
| 204 | |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 205 | private final class PacketRequestTracker { |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 206 | |
Thomas Vachuska | 27bee09 | 2015-06-23 19:03:10 -0700 | [diff] [blame] | 207 | private ConsistentMap<TrafficSelector, Set<PacketRequest>> requests; |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 208 | |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 209 | private PacketRequestTracker() { |
Thomas Vachuska | 27bee09 | 2015-06-23 19:03:10 -0700 | [diff] [blame] | 210 | requests = storageService.<TrafficSelector, Set<PacketRequest>>consistentMapBuilder() |
| 211 | .withName("onos-packet-requests") |
Thomas Vachuska | 19f1229 | 2015-04-20 16:29:15 -0700 | [diff] [blame] | 212 | .withPartitionsDisabled() |
Thomas Vachuska | 27bee09 | 2015-06-23 19:03:10 -0700 | [diff] [blame] | 213 | .withSerializer(Serializer.using(KryoNamespaces.API)) |
| 214 | .build(); |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 215 | } |
| 216 | |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 217 | private void add(PacketRequest request) { |
| 218 | AtomicBoolean firstRequest = |
Madan Jampani | d61f2b1 | 2015-12-10 17:01:52 -0800 | [diff] [blame] | 219 | retryable(this::addInternal, ConsistentMapException.ConcurrentModification.class, |
| 220 | Integer.MAX_VALUE, MAX_BACKOFF).apply(request); |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 221 | if (firstRequest.get() && delegate != null) { |
| 222 | // The instance that makes the first request will push to all devices |
| 223 | delegate.requestPackets(request); |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | private AtomicBoolean addInternal(PacketRequest request) { |
Brian O'Connor | 21b028e | 2015-10-08 22:50:02 -0700 | [diff] [blame] | 228 | AtomicBoolean firstRequest = new AtomicBoolean(false); |
| 229 | requests.compute(request.selector(), (s, existingRequests) -> { |
| 230 | if (existingRequests == null) { |
| 231 | firstRequest.set(true); |
| 232 | return ImmutableSet.of(request); |
| 233 | } else if (!existingRequests.contains(request)) { |
| 234 | return ImmutableSet.<PacketRequest>builder() |
| 235 | .addAll(existingRequests) |
| 236 | .add(request) |
| 237 | .build(); |
| 238 | } else { |
| 239 | return existingRequests; |
| 240 | } |
| 241 | }); |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 242 | return firstRequest; |
| 243 | } |
Brian O'Connor | 21b028e | 2015-10-08 22:50:02 -0700 | [diff] [blame] | 244 | |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 245 | private void remove(PacketRequest request) { |
| 246 | AtomicBoolean removedLast = |
Madan Jampani | d61f2b1 | 2015-12-10 17:01:52 -0800 | [diff] [blame] | 247 | retryable(this::removeInternal, ConsistentMapException.ConcurrentModification.class, |
| 248 | Integer.MAX_VALUE, MAX_BACKOFF).apply(request); |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 249 | if (removedLast.get() && delegate != null) { |
| 250 | // The instance that removes the last request will remove from all devices |
| 251 | delegate.cancelPackets(request); |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 252 | } |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 253 | } |
| 254 | |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 255 | private AtomicBoolean removeInternal(PacketRequest request) { |
Brian O'Connor | 21b028e | 2015-10-08 22:50:02 -0700 | [diff] [blame] | 256 | AtomicBoolean removedLast = new AtomicBoolean(false); |
| 257 | requests.computeIfPresent(request.selector(), (s, existingRequests) -> { |
| 258 | if (existingRequests.contains(request)) { |
| 259 | Set<PacketRequest> newRequests = Sets.newHashSet(existingRequests); |
| 260 | newRequests.remove(request); |
| 261 | if (newRequests.size() > 0) { |
| 262 | return ImmutableSet.copyOf(newRequests); |
| 263 | } else { |
| 264 | removedLast.set(true); |
| 265 | return null; |
| 266 | } |
| 267 | } else { |
| 268 | return existingRequests; |
| 269 | } |
| 270 | }); |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 271 | return removedLast; |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 272 | } |
| 273 | |
Thomas Vachuska | 40e63e6 | 2015-10-13 16:16:20 -0700 | [diff] [blame] | 274 | private List<PacketRequest> requests() { |
Thomas Vachuska | 7f171b2 | 2015-08-21 12:49:08 -0700 | [diff] [blame] | 275 | List<PacketRequest> list = Lists.newArrayList(); |
| 276 | requests.values().forEach(v -> list.addAll(v.value())); |
| 277 | list.sort((o1, o2) -> o1.priority().priorityValue() - o2.priority().priorityValue()); |
| 278 | return list; |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 279 | } |
alshabib | 4294778 | 2015-03-31 14:59:06 -0700 | [diff] [blame] | 280 | } |
sangyun-han | ad84e0c | 2016-02-19 18:30:03 +0900 | [diff] [blame] | 281 | |
| 282 | /** |
| 283 | * Sets thread pool size of message handler. |
| 284 | * |
| 285 | * @param poolSize |
| 286 | */ |
| 287 | private void setMessageHandlerThreadPoolSize(int poolSize) { |
| 288 | checkArgument(poolSize >= 0, "Message handler pool size must be 0 or more"); |
| 289 | messageHandlerThreadPoolSize = poolSize; |
| 290 | } |
| 291 | |
| 292 | /** |
| 293 | * Restarts thread pool of message handler. |
| 294 | */ |
| 295 | private void restartMessageHandlerThreadPool() { |
| 296 | ExecutorService prevExecutor = messageHandlingExecutor; |
| 297 | messageHandlingExecutor = Executors.newFixedThreadPool(getMessageHandlerThreadPoolSize()); |
| 298 | prevExecutor.shutdown(); |
| 299 | } |
| 300 | |
| 301 | /** |
| 302 | * Gets current thread pool size of message handler. |
| 303 | * |
| 304 | * @return messageHandlerThreadPoolSize |
| 305 | */ |
| 306 | private int getMessageHandlerThreadPoolSize() { |
| 307 | return messageHandlerThreadPoolSize; |
| 308 | } |
Jonathan Hart | 4f60f98 | 2014-10-27 08:11:17 -0700 | [diff] [blame] | 309 | } |