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.object;
10 import static com.google.common.base.Preconditions.checkArgument;
11 import static org.opendaylight.protocol.util.ByteBufWriteUtil.writeUnsignedByte;
12 import static org.opendaylight.protocol.util.ByteBufWriteUtil.writeUnsignedInt;
14 import io.netty.buffer.ByteBuf;
15 import io.netty.buffer.Unpooled;
16 import java.util.List;
17 import org.opendaylight.protocol.pcep.spi.AbstractObjectWithTlvsParser;
18 import org.opendaylight.protocol.pcep.spi.ObjectUtil;
19 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
20 import org.opendaylight.protocol.pcep.spi.TlvRegistry;
21 import org.opendaylight.protocol.pcep.spi.VendorInformationTlvRegistry;
22 import org.opendaylight.protocol.util.BitArray;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.Object;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.ObjectHeader;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.lspa.object.Lspa;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.lspa.object.LspaBuilder;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.lspa.object.lspa.Tlvs;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.lspa.object.lspa.TlvsBuilder;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.vendor.information.tlvs.VendorInformationTlv;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.AttributeFilter;
31 import org.opendaylight.yangtools.yang.common.netty.ByteBufUtils;
34 * Parser for {@link Lspa}.
36 public class PCEPLspaObjectParser extends AbstractObjectWithTlvsParser<TlvsBuilder> {
37 private static final int CLASS = 9;
38 private static final int TYPE = 1;
41 * lengths of fields in bytes
43 private static final int FLAGS_SIZE = 8;
46 * offsets of flags inside flags field in bits
48 private static final int L_FLAG_OFFSET = 7;
50 private static final int RESERVED = 1;
52 public PCEPLspaObjectParser(final TlvRegistry tlvReg, final VendorInformationTlvRegistry viTlvReg) {
53 super(tlvReg, viTlvReg, CLASS, TYPE);
57 public Lspa parseObject(final ObjectHeader header, final ByteBuf bytes) throws PCEPDeserializerException {
58 checkArgument(bytes != null && bytes.isReadable(), "Array of bytes is mandatory. Cannot be null or empty.");
59 final LspaBuilder builder = new LspaBuilder()
60 .setIgnore(header.isIgnore())
61 .setProcessingRule(header.isProcessingRule())
62 .setExcludeAny(new AttributeFilter(ByteBufUtils.readUint32(bytes)))
63 .setIncludeAll(new AttributeFilter(ByteBufUtils.readUint32(bytes)))
64 .setIncludeAny(new AttributeFilter(ByteBufUtils.readUint32(bytes)))
65 .setSetupPriority(ByteBufUtils.readUint8(bytes))
66 .setHoldPriority(ByteBufUtils.readUint8(bytes));
68 final BitArray flags = BitArray.valueOf(bytes.readByte());
69 builder.setLocalProtectionDesired(flags.get(L_FLAG_OFFSET));
70 final TlvsBuilder tbuilder = new TlvsBuilder();
71 bytes.skipBytes(RESERVED);
72 parseTlvs(tbuilder, bytes.slice());
73 builder.setTlvs(tbuilder.build());
74 return builder.build();
78 public void serializeObject(final Object object, final ByteBuf buffer) {
79 checkArgument(object instanceof Lspa,
80 "Wrong instance of PCEPObject. Passed %s. Needed LspaObject.", object.getClass());
81 final Lspa lspaObj = (Lspa) object;
82 final ByteBuf body = Unpooled.buffer();
83 writeAttributeFilter(lspaObj.getExcludeAny(), body);
84 writeAttributeFilter(lspaObj.getIncludeAny(), body);
85 writeAttributeFilter(lspaObj.getIncludeAll(), body);
86 writeUnsignedByte(lspaObj.getSetupPriority(), body);
87 writeUnsignedByte(lspaObj.getHoldPriority(), body);
88 final BitArray flags = new BitArray(FLAGS_SIZE);
89 flags.set(L_FLAG_OFFSET, lspaObj.isLocalProtectionDesired());
90 flags.toByteBuf(body);
91 body.writeZero(RESERVED);
92 serializeTlvs(lspaObj.getTlvs(), body);
93 ObjectUtil.formatSubobject(TYPE, CLASS, object.isProcessingRule(), object.isIgnore(), body, buffer);
96 public void serializeTlvs(final Tlvs tlvs, final ByteBuf body) {
100 serializeVendorInformationTlvs(tlvs.getVendorInformationTlv(), body);
103 private static void writeAttributeFilter(final AttributeFilter attributeFilter, final ByteBuf body) {
104 writeUnsignedInt(attributeFilter != null ? attributeFilter.getValue() : null, body);
108 protected final void addVendorInformationTlvs(final TlvsBuilder builder, final List<VendorInformationTlv> tlvs) {
109 if (!tlvs.isEmpty()) {
110 builder.setVendorInformationTlv(tlvs);