Java tutorial
/* * Copyright (c) 2016 Cisco Systems, Inc. and others. All rights reserved. * * This program and the accompanying materials are made available under the * terms of the Eclipse Public License v1.0 which accompanies this distribution, * and is available at http://www.eclipse.org/legal/epl-v10.html */ package org.opendaylight.protocol.bgp.parser.impl.message.update; import com.google.common.base.Preconditions; import io.netty.buffer.ByteBuf; import java.util.ArrayList; import java.util.List; import org.opendaylight.protocol.bgp.parser.BGPDocumentedException; import org.opendaylight.protocol.bgp.parser.BGPParsingException; import org.opendaylight.protocol.bgp.parser.spi.AttributeParser; import org.opendaylight.protocol.bgp.parser.spi.AttributeSerializer; import org.opendaylight.protocol.bgp.parser.spi.BgpPrefixSidTlvRegistry; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.Attributes; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.AttributesBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.attributes.BgpPrefixSid; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.attributes.BgpPrefixSidBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.attributes.bgp.prefix.sid.BgpPrefixSidTlvs; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.attributes.bgp.prefix.sid.BgpPrefixSidTlvsBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.attributes.bgp.prefix.sid.bgp.prefix.sid.tlvs.BgpPrefixSidTlv; import org.opendaylight.yangtools.yang.binding.DataObject; public final class BgpPrefixSidAttributeParser implements AttributeParser, AttributeSerializer { public static final int TYPE = 40; private final BgpPrefixSidTlvRegistry reg; public BgpPrefixSidAttributeParser(final BgpPrefixSidTlvRegistry registry) { this.reg = Preconditions.checkNotNull(registry); } @Override public void serializeAttribute(final DataObject attribute, final ByteBuf byteAggregator) { Preconditions.checkArgument(attribute instanceof Attributes, "Attribute parameter is not a PathAttribute object."); final Attributes pathAttributes = (Attributes) attribute; final BgpPrefixSid prefixSid = pathAttributes.getBgpPrefixSid(); if (prefixSid == null) { return; } for (final BgpPrefixSidTlvs tlv : prefixSid.getBgpPrefixSidTlvs()) { this.reg.serializeBgpPrefixSidTlv(tlv.getBgpPrefixSidTlv(), byteAggregator); } } @Override public void parseAttribute(final ByteBuf buffer, final AttributesBuilder builder) throws BGPDocumentedException, BGPParsingException { final BgpPrefixSidBuilder sid = new BgpPrefixSidBuilder(); final List<BgpPrefixSidTlvs> tlvList = new ArrayList<BgpPrefixSidTlvs>(); while (buffer.isReadable()) { final BgpPrefixSidTlv tlv = this.reg.parseBgpPrefixSidTlv(buffer.readUnsignedByte(), buffer); tlvList.add(new BgpPrefixSidTlvsBuilder().setBgpPrefixSidTlv(tlv).build()); } builder.setBgpPrefixSid(sid.setBgpPrefixSidTlvs(tlvList).build()); } }