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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.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 metric attribute.
*/
public class BgpPrefixAttrMetric implements BgpValueType {
protected static final Logger log = LoggerFactory
.getLogger(BgpPrefixAttrMetric.class);
public static final int ATTR_PREFIX_METRIC = 1155;
public static final int ATTR_PREFIX_LEN = 4;
/* TE Default Metric */
private final int linkPfxMetric;
/**
* Constructor to initialize value.
*
* @param linkPfxMetric Prefix Metric
*/
public BgpPrefixAttrMetric(int linkPfxMetric) {
this.linkPfxMetric = linkPfxMetric;
}
/**
* Returns object of this class with specified values.
*
* @param linkPfxMetric Prefix Metric
* @return object of BgpPrefixAttrMetric
*/
public static BgpPrefixAttrMetric of(final int linkPfxMetric) {
return new BgpPrefixAttrMetric(linkPfxMetric);
}
/**
* Reads the Prefix Metric.
*
* @param cb ChannelBuffer
* @return object of BgpPrefixAttrMetric
* @throws BgpParseException while parsing BgpPrefixAttrMetric
*/
public static BgpPrefixAttrMetric read(ChannelBuffer cb)
throws BgpParseException {
int linkPfxMetric;
short lsAttrLength = cb.readShort(); // 4 Bytes
if ((lsAttrLength != ATTR_PREFIX_LEN)
|| (cb.readableBytes() < lsAttrLength)) {
Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR,
BgpErrorType.ATTRIBUTE_LENGTH_ERROR,
lsAttrLength);
}
linkPfxMetric = cb.readInt();
return BgpPrefixAttrMetric.of(linkPfxMetric);
}
/**
* Returns the Prefix Metric.
*
* @return Prefix Metric
*/
public int attrPfxMetric() {
return linkPfxMetric;
}
@Override
public short getType() {
return ATTR_PREFIX_METRIC;
}
@Override
public int hashCode() {
return Objects.hash(linkPfxMetric);
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof BgpPrefixAttrMetric) {
BgpPrefixAttrMetric other = (BgpPrefixAttrMetric) obj;
return Objects.equals(linkPfxMetric, other.linkPfxMetric);
}
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())
.add("linkPfxMetric", linkPfxMetric).toString();
}
@Override
public int compareTo(Object o) {
// TODO Auto-generated method stub
return 0;
}
}
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