| /* |
| * Copyright 2015-present Open Networking Foundation |
| * |
| * 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.store.trivial; |
| |
| import com.google.common.collect.ImmutableSet; |
| import com.google.common.collect.Lists; |
| import com.google.common.collect.Maps; |
| import com.google.common.collect.Sets; |
| import org.onosproject.net.flow.TrafficSelector; |
| import org.onosproject.net.packet.OutboundPacket; |
| import org.onosproject.net.packet.PacketEvent; |
| import org.onosproject.net.packet.PacketEvent.Type; |
| import org.onosproject.net.packet.PacketRequest; |
| import org.onosproject.net.packet.PacketStore; |
| import org.onosproject.net.packet.PacketStoreDelegate; |
| import org.onosproject.store.AbstractStore; |
| import org.osgi.service.component.annotations.Component; |
| |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| /** |
| * Simple single instance implementation of the packet store. |
| */ |
| @Component(immediate = true, service = PacketStore.class) |
| public class SimplePacketStore |
| extends AbstractStore<PacketEvent, PacketStoreDelegate> |
| implements PacketStore { |
| |
| private Map<TrafficSelector, Set<PacketRequest>> requests = Maps.newConcurrentMap(); |
| |
| @Override |
| public void emit(OutboundPacket packet) { |
| notifyDelegate(new PacketEvent(Type.EMIT, packet)); |
| } |
| |
| @Override |
| public void requestPackets(PacketRequest request) { |
| requests.compute(request.selector(), (s, existingRequests) -> { |
| if (existingRequests == null) { |
| return ImmutableSet.of(request); |
| } else if (!existingRequests.contains(request)) { |
| if (delegate != null) { |
| delegate.requestPackets(request); |
| } |
| return ImmutableSet.<PacketRequest>builder() |
| .addAll(existingRequests) |
| .add(request) |
| .build(); |
| } else { |
| return existingRequests; |
| } |
| }); |
| } |
| |
| @Override |
| public void cancelPackets(PacketRequest request) { |
| requests.computeIfPresent(request.selector(), (s, existingRequests) -> { |
| if (existingRequests.contains(request)) { |
| HashSet<PacketRequest> newRequests = Sets.newHashSet(existingRequests); |
| newRequests.remove(request); |
| if (newRequests.size() > 0) { |
| return ImmutableSet.copyOf(newRequests); |
| } else { |
| if (delegate != null) { |
| delegate.cancelPackets(request); |
| } |
| return null; |
| } |
| } else { |
| return existingRequests; |
| } |
| }); |
| } |
| |
| @Override |
| public List<PacketRequest> existingRequests() { |
| List<PacketRequest> list = Lists.newArrayList(); |
| requests.values().forEach(list::addAll); |
| list.sort((o1, o2) -> o1.priority().priorityValue() - o2.priority().priorityValue()); |
| return list; |
| } |
| |
| } |