pcep/ietf-stateful07/src/main/java/org/opendaylight/protocol/pcep/ietf/initiated00/CInitiated00StatefulCapabilityTlvParser.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   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
   7  */
   8 package org.opendaylight.protocol.pcep.ietf.initiated00;
   9
  10 import io.netty.buffer.ByteBuf;
  11
  12 import java.util.BitSet;
  13
  14 import org.opendaylight.protocol.pcep.ietf.stateful07.Stateful07StatefulCapabilityTlvParser;
  15 import org.opendaylight.protocol.pcep.impl.tlv.TlvUtil;
  16 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
  17 import org.opendaylight.protocol.util.ByteArray;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.Stateful1;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.Stateful1Builder;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.stateful.capability.tlv.Stateful;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.stateful.capability.tlv.StatefulBuilder;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
  23
  24 /**
  25  * Parser for {@link Stateful}
  26  */
  27 public final class CInitiated00StatefulCapabilityTlvParser extends Stateful07StatefulCapabilityTlvParser {
  28
  29     private static final int I_FLAG_OFFSET = 29;
  30
  31     @Override
  32     public Stateful parseTlv(final ByteBuf buffer) throws PCEPDeserializerException {
  33         if (buffer == null) {
  34             return null;
  35         }
  36         if (buffer.readableBytes() < FLAGS_F_LENGTH) {
  37             throw new PCEPDeserializerException("Wrong length of array of bytes. Passed: " + buffer.readableBytes() + "; Expected: >= "
  38                     + FLAGS_F_LENGTH + ".");
  39         }
  40         final BitSet flags = ByteArray.bytesToBitSet(ByteArray.readBytes(buffer, FLAGS_F_LENGTH));
  41
  42         final StatefulBuilder sb = new StatefulBuilder();
  43         sb.setLspUpdateCapability(flags.get(U_FLAG_OFFSET));
  44
  45         if (flags.get(I_FLAG_OFFSET)) {
  46             sb.addAugmentation(Stateful1.class, new Stateful1Builder().setInitiation(Boolean.TRUE).build());
  47         }
  48         return sb.build();
  49     }
  50
  51     @Override
  52     public byte[] serializeTlv(final Tlv tlv) {
  53         if (tlv == null) {
  54             throw new IllegalArgumentException("StatefulCapabilityTlv is mandatory.");
  55         }
  56         final Stateful sct = (Stateful) tlv;
  57
  58         final BitSet flags = new BitSet(FLAGS_F_LENGTH * Byte.SIZE);
  59
  60         final Stateful1 sfi = sct.getAugmentation(Stateful1.class);
  61         if (sfi != null) {
  62             flags.set(I_FLAG_OFFSET, sfi.isInitiation());
  63         }
  64         flags.set(U_FLAG_OFFSET, sct.isLspUpdateCapability());
  65         return TlvUtil.formatTlv(TYPE, ByteArray.bitSetToBytes(flags, FLAGS_F_LENGTH));
  66     }
  67 }