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/*
* Copyright 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.bgpio.types.attr;
import java.util.Arrays;
import java.util.Objects;
import org.jboss.netty.buffer.ChannelBuffer;
import org.onosproject.bgpio.exceptions.BGPParseException;
import org.onosproject.bgpio.types.BGPErrorType;
import org.onosproject.bgpio.types.BGPValueType;
import org.onosproject.bgpio.util.Validation;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.base.MoreObjects;
/**
* Implements BGP prefix route tag attribute.
*/
public class BgpPrefixAttrRouteTag implements BGPValueType {
protected static final Logger log = LoggerFactory
.getLogger(BgpPrefixAttrRouteTag.class);
public static final int ATTR_PREFIX_ROUTETAG = 1153;
/* Prefix Route Tag */
private int[] pfxRouteTag;
/**
* Constructor to initialize the values.
*
* @param pfxRouteTag prefix route tag
*/
BgpPrefixAttrRouteTag(int[] pfxRouteTag) {
this.pfxRouteTag = Arrays.copyOf(pfxRouteTag, pfxRouteTag.length);
}
/**
* Reads the Route Tag.
*
* @param cb ChannelBuffer
* @return object of BgpPrefixAttrRouteTag
* @throws BGPParseException while parsing BgpPrefixAttrRouteTag
*/
public static BgpPrefixAttrRouteTag read(ChannelBuffer cb)
throws BGPParseException {
int[] pfxRouteTag;
short lsAttrLength = cb.readShort();
int len = lsAttrLength / Integer.SIZE;
if (cb.readableBytes() < lsAttrLength) {
Validation.validateLen(BGPErrorType.UPDATE_MESSAGE_ERROR,
BGPErrorType.ATTRIBUTE_LENGTH_ERROR,
lsAttrLength);
}
pfxRouteTag = new int[lsAttrLength];
for (int i = 0; i < len; i++) {
pfxRouteTag[i] = cb.readInt();
}
return new BgpPrefixAttrRouteTag(pfxRouteTag);
}
/**
* Returns the prefix route tag.
*
* @return route tag
*/
int[] getPfxRouteTag() {
return pfxRouteTag;
}
@Override
public short getType() {
return ATTR_PREFIX_ROUTETAG;
}
@Override
public int hashCode() {
return Objects.hash(pfxRouteTag);
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof BgpPrefixAttrRouteTag) {
BgpPrefixAttrRouteTag other = (BgpPrefixAttrRouteTag) obj;
return Objects.equals(pfxRouteTag, other.pfxRouteTag);
}
return false;
}
@Override
public int write(ChannelBuffer cb) {
// TODO This will be implemented in the next version
return 0;
}
@Override
public String toString() {
return MoreObjects.toStringHelper(getClass()).omitNullValues()
.add("pfxRouteTag", pfxRouteTag).toString();
}
}
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