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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.protocol.linkstate;
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.util.Constants;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.base.MoreObjects;
/**
* Implementation of Node Identifier which includes local node descriptor/remote node descriptors.
*/
public class BgpNodeLSIdentifier implements Comparable<Object> {
private static final Logger log = LoggerFactory.getLogger(BgpNodeLSIdentifier.class);
private NodeDescriptors nodeDescriptors;
/**
* Resets fields.
*/
public BgpNodeLSIdentifier() {
this.nodeDescriptors = null;
}
/**
* Constructor to initialize fields.
*
* @param nodeDescriptors local/remote node descriptor
*/
public BgpNodeLSIdentifier(NodeDescriptors nodeDescriptors) {
this.nodeDescriptors = nodeDescriptors;
}
/**
* Parse local node descriptors.
*
* @param cb ChannelBuffer
* @param protocolId protocol identifier
* @return object of this BGPNodeLSIdentifier
* @throws BgpParseException while parsing local node descriptors
*/
public static BgpNodeLSIdentifier parseLocalNodeDescriptors(ChannelBuffer cb, byte protocolId)
throws BgpParseException {
log.debug("parse Local node descriptor");
ChannelBuffer tempBuf = cb.copy();
short type = cb.readShort();
short length = cb.readShort();
if (cb.readableBytes() < length) {
throw new BgpParseException(BgpErrorType.UPDATE_MESSAGE_ERROR, BgpErrorType.OPTIONAL_ATTRIBUTE_ERROR,
tempBuf.readBytes(cb.readableBytes() + Constants.TYPE_AND_LEN));
}
NodeDescriptors nodeDescriptors = new NodeDescriptors();
ChannelBuffer tempCb = cb.readBytes(length);
if (type == NodeDescriptors.LOCAL_NODE_DES_TYPE) {
nodeDescriptors = NodeDescriptors.read(tempCb, length, type, protocolId);
} else {
throw new BgpParseException(BgpErrorType.UPDATE_MESSAGE_ERROR, BgpErrorType.MALFORMED_ATTRIBUTE_LIST, null);
}
return new BgpNodeLSIdentifier(nodeDescriptors);
}
/**
* Returns node descriptors.
*
* @return node descriptors
*/
public NodeDescriptors getNodedescriptors() {
return this.nodeDescriptors;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof BgpNodeLSIdentifier) {
BgpNodeLSIdentifier other = (BgpNodeLSIdentifier) obj;
return Objects.equals(nodeDescriptors, other.nodeDescriptors);
}
return false;
}
@Override
public int hashCode() {
return Objects.hash(nodeDescriptors);
}
@Override
public String toString() {
return MoreObjects.toStringHelper(getClass())
.add("NodeDescriptors", nodeDescriptors)
.toString();
}
@Override
public int compareTo(Object o) {
if (this.equals(o)) {
return 0;
}
return this.nodeDescriptors.compareTo(((BgpNodeLSIdentifier) o).nodeDescriptors);
}
}
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