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.pcep.parser.subobject;
10 import static org.opendaylight.protocol.util.ByteBufWriteUtil.writeIpv4Prefix;
11 import static org.opendaylight.protocol.util.ByteBufWriteUtil.writeUnsignedByte;
12 import com.google.common.base.Preconditions;
13 import io.netty.buffer.ByteBuf;
14 import io.netty.buffer.Unpooled;
15 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
16 import org.opendaylight.protocol.pcep.spi.XROSubobjectParser;
17 import org.opendaylight.protocol.pcep.spi.XROSubobjectSerializer;
18 import org.opendaylight.protocol.pcep.spi.XROSubobjectUtil;
19 import org.opendaylight.protocol.util.ByteArray;
20 import org.opendaylight.protocol.util.Ipv4Util;
21 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpPrefix;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.exclude.route.object.xro.Subobject;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.exclude.route.object.xro.SubobjectBuilder;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.ExcludeRouteSubobjects.Attribute;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.IpPrefixSubobject;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.basic.explicit.route.subobjects.subobject.type.IpPrefixCase;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.basic.explicit.route.subobjects.subobject.type.IpPrefixCaseBuilder;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.basic.explicit.route.subobjects.subobject.type.ip.prefix._case.IpPrefixBuilder;
31 * Parser for {@link IpPrefixCase}
33 public class XROIpv4PrefixSubobjectParser implements XROSubobjectParser, XROSubobjectSerializer {
35 public static final int TYPE = 1;
37 private static final int PREFIX_F_LENGTH = 1;
39 private static final int PREFIX4_F_OFFSET = Ipv4Util.IP4_LENGTH;
41 private static final int CONTENT4_LENGTH = PREFIX4_F_OFFSET + PREFIX_F_LENGTH + 1;
44 public Subobject parseSubobject(final ByteBuf buffer, final boolean mandatory) throws PCEPDeserializerException {
45 Preconditions.checkArgument(buffer != null && buffer.isReadable(), "Array of bytes is mandatory. Can't be null or empty.");
46 final SubobjectBuilder builder = new SubobjectBuilder();
47 builder.setMandatory(mandatory);
48 if (buffer.readableBytes() != CONTENT4_LENGTH) {
49 throw new PCEPDeserializerException("Wrong length of array of bytes. Passed: " + buffer.readableBytes() + ";");
51 final int length = buffer.getUnsignedByte(PREFIX4_F_OFFSET);
52 final IpPrefixBuilder prefix = new IpPrefixBuilder().setIpPrefix(new IpPrefix(Ipv4Util.prefixForBytes(ByteArray.readBytes(buffer,
53 Ipv4Util.IP4_LENGTH), length)));
54 builder.setSubobjectType(new IpPrefixCaseBuilder().setIpPrefix(prefix.build()).build());
55 buffer.skipBytes(PREFIX_F_LENGTH);
56 builder.setAttribute(Attribute.forValue(buffer.readUnsignedByte()));
57 return builder.build();
61 public void serializeSubobject(final Subobject subobject, final ByteBuf buffer) {
62 Preconditions.checkArgument(subobject.getSubobjectType() instanceof IpPrefixCase, "Unknown subobject instance. Passed %s. Needed IpPrefixCase.", subobject.getSubobjectType().getClass());
63 final IpPrefixSubobject specObj = ((IpPrefixCase) subobject.getSubobjectType()).getIpPrefix();
64 final IpPrefix prefix = specObj.getIpPrefix();
65 Preconditions.checkArgument(prefix.getIpv4Prefix() != null || prefix.getIpv6Prefix() != null, "Unknown AbstractPrefix instance. Passed %s.", prefix.getClass());
66 if (prefix.getIpv6Prefix() != null) {
67 new XROIpv6PrefixSubobjectParser().serializeSubobject(subobject, buffer);
69 final ByteBuf body = Unpooled.buffer(CONTENT4_LENGTH);
70 Preconditions.checkArgument(prefix.getIpv4Prefix() != null, "Ipv4Prefix is mandatory.");
71 writeIpv4Prefix(prefix.getIpv4Prefix(), body);
72 Preconditions.checkArgument(subobject.getAttribute() != null, "Attribute is mandatory.");
73 writeUnsignedByte((short) subobject.getAttribute().getIntValue(), body);
74 XROSubobjectUtil.formatSubobject(TYPE, subobject.isMandatory(), body, buffer);