| /* |
| * Copyright 2014-present 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.net.packet; |
| |
| import org.onosproject.net.flow.DefaultTrafficTreatment; |
| import org.onosproject.net.flow.TrafficTreatment; |
| import org.onosproject.net.flow.TrafficTreatment.Builder; |
| |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import static org.onosproject.security.AppGuard.checkPermission; |
| import static org.onosproject.security.AppPermission.Type.*; |
| |
| /** |
| * Default implementation of a packet context. |
| */ |
| public abstract class DefaultPacketContext implements PacketContext { |
| |
| private final long time; |
| private final InboundPacket inPkt; |
| private final OutboundPacket outPkt; |
| private final TrafficTreatment.Builder builder; |
| |
| private final AtomicBoolean block; |
| |
| /** |
| * Creates a new packet context. |
| * |
| * @param time creation time |
| * @param inPkt inbound packet |
| * @param outPkt outbound packet |
| * @param block whether the context is blocked or not |
| */ |
| protected DefaultPacketContext(long time, InboundPacket inPkt, |
| OutboundPacket outPkt, boolean block) { |
| super(); |
| this.time = time; |
| this.inPkt = inPkt; |
| this.outPkt = outPkt; |
| this.block = new AtomicBoolean(block); |
| this.builder = DefaultTrafficTreatment.builder(); |
| } |
| |
| @Override |
| public long time() { |
| checkPermission(PACKET_READ); |
| return time; |
| } |
| |
| @Override |
| public InboundPacket inPacket() { |
| checkPermission(PACKET_READ); |
| return inPkt; |
| } |
| |
| @Override |
| public OutboundPacket outPacket() { |
| checkPermission(PACKET_READ); |
| return outPkt; |
| } |
| |
| @Override |
| public Builder treatmentBuilder() { |
| checkPermission(PACKET_READ); |
| return builder; |
| } |
| |
| @Override |
| public abstract void send(); |
| |
| @Override |
| public boolean block() { |
| checkPermission(PACKET_WRITE); |
| return this.block.getAndSet(true); |
| } |
| |
| @Override |
| public boolean isHandled() { |
| checkPermission(PACKET_READ); |
| return this.block.get(); |
| } |
| } |