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
9 package org.opendaylight.protocol.pcep.parser.object;
11 import static org.opendaylight.protocol.util.ByteBufWriteUtil.writeUnsignedInt;
13 import com.google.common.base.Preconditions;
14 import com.google.common.primitives.UnsignedBytes;
15 import io.netty.buffer.ByteBuf;
16 import io.netty.buffer.Unpooled;
17 import java.util.List;
18 import org.opendaylight.protocol.pcep.spi.AbstractObjectWithTlvsParser;
19 import org.opendaylight.protocol.pcep.spi.ObjectUtil;
20 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
21 import org.opendaylight.protocol.pcep.spi.TlvRegistry;
22 import org.opendaylight.protocol.pcep.spi.VendorInformationTlvRegistry;
23 import org.opendaylight.protocol.util.BitArray;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Object;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.ObjectHeader;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.RequestId;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.order.tlv.Order;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.path.setup.type.tlv.PathSetupType;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.rp.object.Rp;
31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.rp.object.RpBuilder;
32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.rp.object.rp.Tlvs;
33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.rp.object.rp.TlvsBuilder;
34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.vendor.information.tlvs.VendorInformationTlv;
37 * Parser for {@link Rp}
39 public class PCEPRequestParameterObjectParser extends AbstractObjectWithTlvsParser<TlvsBuilder> {
41 public static final int CLASS = 2;
43 public static final int TYPE = 1;
46 * lengths of fields in bytes
48 private static final int FLAGS_SIZE = 32;
51 * lengths of subfields inside multi-field in bits
53 private static final int FLAGS_SF_LENGTH = 29;
56 * offsets of subfields inside multi-field in bits
59 private static final int FLAGS_SF_OFFSET = 0;
60 private static final int PRI_SF_OFFSET = FLAGS_SF_OFFSET + FLAGS_SF_LENGTH;
63 * flags offsets inside flags sub-field in bits
66 private static final int O_FLAG_OFFSET = 26;
67 private static final int B_FLAG_OFFSET = 27;
68 private static final int R_FLAG_OFFSET = 28;
71 * GCO extension flags offsets inside flags sub-field in bits
73 private static final int M_FLAG_OFFSET = 21;
74 private static final int D_FLAG_OFFSET = 22;
77 * Path-key bit (RFC5520)
79 private static final int P_FLAG_OFFSET = 23;
81 * OF extension flags offsets inside flags sub.field in bits
83 private static final int S_FLAG_OFFSET = 24;
87 private static final int F_FLAG_OFFSET = 18;
89 private static final int N_FLAG_OFFSET = 19;
91 private static final int E_FLAG_OFFSET = 20;
93 public PCEPRequestParameterObjectParser(final TlvRegistry tlvReg, final VendorInformationTlvRegistry viTlvReg) {
94 super(tlvReg, viTlvReg);
98 public Object parseObject(final ObjectHeader header, final ByteBuf bytes) throws PCEPDeserializerException {
99 Preconditions.checkArgument(bytes != null && bytes.isReadable(), "Array of bytes is mandatory. Can't be null or empty.");
100 final BitArray flags = BitArray.valueOf(bytes, FLAGS_SIZE);
102 final RpBuilder builder = new RpBuilder();
103 builder.setIgnore(header.isIgnore());
104 builder.setProcessingRule(header.isProcessingRule());
107 priority |= flags.get(PRI_SF_OFFSET + 2) ? 1 : 0;
108 priority |= (flags.get(PRI_SF_OFFSET + 1) ? 1 : 0) << 1;
109 priority |= (flags.get(PRI_SF_OFFSET) ? 1 : 0) << 2;
111 builder.setPriority(priority);
113 builder.setFragmentation(flags.get(F_FLAG_OFFSET));
114 builder.setP2mp(flags.get(N_FLAG_OFFSET));
115 builder.setEroCompression(flags.get(E_FLAG_OFFSET));
116 builder.setMakeBeforeBreak(flags.get(M_FLAG_OFFSET));
117 builder.setOrder(flags.get(D_FLAG_OFFSET));
118 builder.setPathKey(flags.get(P_FLAG_OFFSET));
119 builder.setSupplyOf(flags.get(S_FLAG_OFFSET));
120 builder.setLoose(flags.get(O_FLAG_OFFSET));
121 builder.setBiDirectional(flags.get(B_FLAG_OFFSET));
122 builder.setReoptimization(flags.get(R_FLAG_OFFSET));
124 builder.setRequestId(new RequestId(bytes.readUnsignedInt()));
125 final TlvsBuilder tlvsBuilder = new TlvsBuilder();
126 parseTlvs(tlvsBuilder, bytes.slice());
127 builder.setTlvs(tlvsBuilder.build());
128 return builder.build();
132 public void addTlv(final TlvsBuilder builder, final Tlv tlv) {
133 if (tlv instanceof Order) {
134 builder.setOrder((Order) tlv);
136 if (tlv instanceof PathSetupType) {
137 builder.setPathSetupType((PathSetupType) tlv);
142 public void serializeObject(final Object object, final ByteBuf buffer) {
143 Preconditions.checkArgument(object instanceof Rp, "Wrong instance of PCEPObject. Passed %s. Needed RPObject.", object.getClass());
144 final ByteBuf body = Unpooled.buffer();
145 final Rp rpObj = (Rp) object;
146 final BitArray flags = new BitArray(FLAGS_SIZE);
147 flags.set(R_FLAG_OFFSET, rpObj.isReoptimization());
148 flags.set(B_FLAG_OFFSET, rpObj.isBiDirectional());
149 flags.set(O_FLAG_OFFSET, rpObj.isLoose());
150 flags.set(M_FLAG_OFFSET, rpObj.isMakeBeforeBreak());
151 flags.set(D_FLAG_OFFSET, rpObj.isOrder());
152 flags.set(P_FLAG_OFFSET, rpObj.isPathKey());
153 flags.set(S_FLAG_OFFSET, rpObj.isSupplyOf());
154 flags.set(F_FLAG_OFFSET, rpObj.isFragmentation());
155 flags.set(N_FLAG_OFFSET, rpObj.isP2mp());
156 flags.set(E_FLAG_OFFSET, rpObj.isEroCompression());
157 final byte[] res = flags.array();
158 if (rpObj.getPriority() != null) {
159 final byte p = UnsignedBytes.checkedCast(rpObj.getPriority().shortValue());
160 res[res.length -1] = (byte) (res[res.length -1] | p);
162 body.writeBytes(res);
163 Preconditions.checkArgument(rpObj.getRequestId() != null, "RequestId is mandatory");
164 writeUnsignedInt(rpObj.getRequestId().getValue(), body);
165 serializeTlvs(rpObj.getTlvs(), body);
166 ObjectUtil.formatSubobject(TYPE, CLASS, object.isProcessingRule(), object.isIgnore(), body, buffer);
169 public void serializeTlvs(final Tlvs tlvs, final ByteBuf body) {
173 if (tlvs.getOrder() != null) {
174 serializeTlv(tlvs.getOrder(), body);
176 if (tlvs.getPathSetupType() != null) {
177 serializeTlv(tlvs.getPathSetupType(), body);
179 serializeVendorInformationTlvs(tlvs.getVendorInformationTlv(), body);
183 protected final void addVendorInformationTlvs(final TlvsBuilder builder, final List<VendorInformationTlv> tlvs) {
184 if (!tlvs.isEmpty()) {
185 builder.setVendorInformationTlv(tlvs);