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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 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 opaque data attribute.
*/
public final class BgpPrefixAttrOpaqueData implements BGPValueType {
protected static final Logger log = LoggerFactory
.getLogger(BgpPrefixAttrOpaqueData.class);
public static final int ATTR_PREFIX_OPAQUEDATA = 1157;
/* Opaque Node Attribute */
private final byte[] opaquePrefixAttribute;
/**
* Constructor to initialize the values.
*
* @param opaquePrefixAttribute opaque prefix data
*/
public BgpPrefixAttrOpaqueData(byte[] opaquePrefixAttribute) {
this.opaquePrefixAttribute = Arrays
.copyOf(opaquePrefixAttribute, opaquePrefixAttribute.length);
}
/**
* Returns object of this class with specified values.
*
* @param opaquePrefixAttribute opaque prefix data
* @return object of BgpPrefixAttrOpaqueData
*/
public static BgpPrefixAttrOpaqueData of(final byte[] opaquePrefixAttribute) {
return new BgpPrefixAttrOpaqueData(opaquePrefixAttribute);
}
/**
* Reads the Opaque Prefix Attribute.
*
* @param cb ChannelBuffer
* @return object of BgpPrefixAttrOpaqueData
* @throws BGPParseException while parsing BgpPrefixAttrOpaqueData
*/
public static BgpPrefixAttrOpaqueData read(ChannelBuffer cb)
throws BGPParseException {
byte[] opaquePrefixAttribute;
short lsAttrLength = cb.readShort();
opaquePrefixAttribute = new byte[lsAttrLength];
if (cb.readableBytes() < lsAttrLength) {
Validation.validateLen(BGPErrorType.UPDATE_MESSAGE_ERROR,
BGPErrorType.ATTRIBUTE_LENGTH_ERROR,
lsAttrLength);
}
cb.readBytes(opaquePrefixAttribute);
return BgpPrefixAttrOpaqueData.of(opaquePrefixAttribute);
}
/**
* Returns the Opaque prefix attribute name.
*
* @return opaque prefix name
*/
public byte[] getOpaquePrefixAttribute() {
return opaquePrefixAttribute;
}
@Override
public short getType() {
return ATTR_PREFIX_OPAQUEDATA;
}
@Override
public int hashCode() {
return Arrays.hashCode(opaquePrefixAttribute);
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof BgpPrefixAttrOpaqueData) {
BgpPrefixAttrOpaqueData other = (BgpPrefixAttrOpaqueData) obj;
return Arrays.equals(opaquePrefixAttribute,
other.opaquePrefixAttribute);
}
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("opaquePrefixAttribute", getOpaquePrefixAttribute())
.toString();
}
}
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