2 * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.protocol.bgp.parser.impl.message.update;
10 import com.google.common.base.Preconditions;
11 import com.google.common.primitives.UnsignedBytes;
12 import io.netty.buffer.ByteBuf;
13 import io.netty.buffer.Unpooled;
14 import org.opendaylight.protocol.bgp.parser.BGPDocumentedException;
15 import org.opendaylight.protocol.bgp.parser.BGPError;
16 import org.opendaylight.protocol.bgp.parser.spi.AttributeParser;
17 import org.opendaylight.protocol.bgp.parser.spi.AttributeSerializer;
18 import org.opendaylight.protocol.bgp.parser.spi.AttributeUtil;
19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.path.attributes.Attributes;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.path.attributes.AttributesBuilder;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.path.attributes.attributes.Origin;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev180329.path.attributes.attributes.OriginBuilder;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev180329.BgpOrigin;
24 import org.opendaylight.yangtools.yang.binding.DataObject;
26 public final class OriginAttributeParser implements AttributeParser, AttributeSerializer {
28 public static final int TYPE = 1;
30 private static final Origin IGP = new OriginBuilder().setValue(BgpOrigin.Igp).build();
31 private static final Origin EGP = new OriginBuilder().setValue(BgpOrigin.Egp).build();
32 private static final Origin INC = new OriginBuilder().setValue(BgpOrigin.Incomplete).build();
35 public void parseAttribute(final ByteBuf buffer, final AttributesBuilder builder) throws BGPDocumentedException {
36 final byte rawOrigin = buffer.readByte();
37 final BgpOrigin borigin = BgpOrigin.forValue(UnsignedBytes.toInt(rawOrigin));
38 if (borigin == null) {
39 throw new BGPDocumentedException("Unknown Origin type.", BGPError.ORIGIN_ATTR_NOT_VALID, new byte[] { (byte) 0x01, (byte) 0x01, rawOrigin} );
43 builder.setOrigin(EGP);
46 builder.setOrigin(IGP);
49 builder.setOrigin(INC);
57 public void serializeAttribute(final DataObject attribute, final ByteBuf byteAggregator) {
58 Preconditions.checkArgument(attribute instanceof Attributes, "Attribute parameter is not a PathAttribute object.");
59 final Origin origin = ((Attributes) attribute).getOrigin();
63 AttributeUtil.formatAttribute(AttributeUtil.TRANSITIVE, TYPE, Unpooled.wrappedBuffer(new byte[] {UnsignedBytes.checkedCast(origin.getValue().getIntValue())}), byteAggregator);