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/*
* Copyright 2014-2015 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();
}
}
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