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.impl.subobject;
10 import io.netty.buffer.ByteBuf;
12 import org.opendaylight.protocol.concepts.Ipv4Util;
13 import org.opendaylight.protocol.concepts.Ipv6Util;
14 import org.opendaylight.protocol.pcep.impl.object.EROSubobjectUtil;
15 import org.opendaylight.protocol.pcep.spi.EROSubobjectParser;
16 import org.opendaylight.protocol.pcep.spi.EROSubobjectSerializer;
17 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
18 import org.opendaylight.protocol.util.ByteArray;
19 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpPrefix;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.explicit.route.object.ero.Subobject;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.explicit.route.object.ero.SubobjectBuilder;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.IpPrefixSubobject;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.basic.explicit.route.subobjects.subobject.type.IpPrefixCase;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.basic.explicit.route.subobjects.subobject.type.IpPrefixCaseBuilder;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev130820.basic.explicit.route.subobjects.subobject.type.ip.prefix._case.IpPrefixBuilder;
27 import com.google.common.base.Preconditions;
28 import com.google.common.primitives.UnsignedBytes;
31 * Parser for {@link IpPrefixCase}
33 public class EROIpv6PrefixSubobjectParser implements EROSubobjectParser, EROSubobjectSerializer {
35 public static final int TYPE = 2;
37 private static final int IP_F_LENGTH = 16;
38 private static final int PREFIX_F_LENGTH = 1;
40 private static final int IP_F_OFFSET = 0;
41 private static final int PREFIX_F_OFFSET = IP_F_OFFSET + IP_F_LENGTH;
43 private static final int CONTENT_LENGTH = PREFIX_F_OFFSET + PREFIX_F_LENGTH + 1;
46 public Subobject parseSubobject(final ByteBuf buffer, final boolean loose) throws PCEPDeserializerException {
47 Preconditions.checkArgument(buffer != null && buffer.isReadable(), "Array of bytes is mandatory. Can't be null or empty.");
48 final SubobjectBuilder builder = new SubobjectBuilder();
49 builder.setLoose(loose);
50 if (buffer.readableBytes() != CONTENT_LENGTH) {
51 throw new PCEPDeserializerException("Wrong length of array of bytes. Passed: " + buffer.readableBytes() + ";");
53 final int length = UnsignedBytes.toInt(buffer.getByte(PREFIX_F_OFFSET));
54 IpPrefixBuilder prefix = new IpPrefixBuilder().setIpPrefix(new IpPrefix(Ipv6Util.prefixForBytes(ByteArray.readBytes(buffer, IP_F_LENGTH), length)));
55 builder.setSubobjectType(new IpPrefixCaseBuilder().setIpPrefix(prefix.build()).build());;
56 return builder.build();
60 public byte[] serializeSubobject(final Subobject subobject) {
61 if (!(subobject.getSubobjectType() instanceof IpPrefixCase)) {
62 throw new IllegalArgumentException("Unknown subobject instance. Passed " + subobject.getSubobjectType().getClass()
63 + ". Needed IpPrefixCase.");
65 final IpPrefixSubobject specObj = ((IpPrefixCase) subobject.getSubobjectType()).getIpPrefix();
66 final IpPrefix prefix = specObj.getIpPrefix();
68 final byte[] retBytes = new byte[CONTENT_LENGTH];
69 ByteArray.copyWhole(Ipv6Util.bytesForPrefix(prefix.getIpv6Prefix()), retBytes, 0);
70 retBytes[PREFIX_F_OFFSET] = UnsignedBytes.checkedCast(Ipv4Util.getPrefixLength(prefix));
71 return EROSubobjectUtil.formatSubobject(TYPE, subobject.isLoose(), retBytes);