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package org.onlab.packet;
/*
* 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.
*/
/**
* Representation of a MPLS label.
*/
public class MplsLabel {
private final int mplsLabel;
// An MPLS Label maximum 20 bits.
public static final int MAX_MPLS = 0xFFFFF;
protected MplsLabel(int value) {
this.mplsLabel = value;
}
public static MplsLabel mplsLabel(int value) {
if (value < 0 || value > MAX_MPLS) {
String errorMsg = "MPLS label value " + value +
" is not in the interval [0, 0xFFFFF]";
throw new IllegalArgumentException(errorMsg);
}
return new MplsLabel(value);
}
public int toInt() {
return this.mplsLabel;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof MplsLabel) {
MplsLabel other = (MplsLabel) obj;
if (this.mplsLabel == other.mplsLabel) {
return true;
}
}
return false;
}
@Override
public int hashCode() {
return this.mplsLabel;
}
@Override
public String toString() {
return String.valueOf(this.mplsLabel);
}
}
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