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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.flow.instructions;
import org.onlab.packet.TpPort;
import java.util.Objects;
import static com.google.common.base.MoreObjects.toStringHelper;
/**
* Abstraction of a single traffic treatment step.
*/
public abstract class L4ModificationInstruction implements Instruction {
/**
* Represents the type of traffic treatment.
*/
public enum L4SubType {
/**
* TCP src modification.
*/
TCP_SRC,
/**
* TCP dst modification.
*/
TCP_DST,
/**
* UDP src modification.
*/
UDP_SRC,
/**
* UDP dst modification.
*/
UDP_DST
//TODO: remaining types
}
/**
* Returns the subtype of the modification instruction.
*
* @return type of instruction
*/
public abstract L4SubType subtype();
@Override
public Type type() {
return Type.L4MODIFICATION;
}
/**
* Represents a L4 src/dst modification instruction.
*/
public static final class ModTransportPortInstruction extends L4ModificationInstruction {
private final L4SubType subtype;
private final TpPort port;
public ModTransportPortInstruction(L4SubType subtype, TpPort port) {
this.subtype = subtype;
this.port = port;
}
@Override
public L4SubType subtype() {
return this.subtype;
}
public TpPort port() {
return this.port;
}
@Override
public String toString() {
return toStringHelper(subtype().toString())
.add("port", port).toString();
}
@Override
public int hashCode() {
return Objects.hash(type(), subtype(), port);
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof ModTransportPortInstruction) {
ModTransportPortInstruction that = (ModTransportPortInstruction) obj;
return Objects.equals(port, that.port) &&
Objects.equals(this.subtype(), that.subtype());
}
return false;
}
}
}
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