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 static org.opendaylight.protocol.util.ByteBufWriteUtil.writeBitSet;
  11
  12 import com.google.common.base.Preconditions;
  13 import io.netty.buffer.ByteBuf;
  14 import io.netty.buffer.Unpooled;
  15 import java.util.BitSet;
  16 import org.opendaylight.protocol.pcep.ietf.stateful07.Stateful07StatefulCapabilityTlvParser;
  17 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
  18 import org.opendaylight.protocol.pcep.spi.TlvUtil;
  19 import org.opendaylight.protocol.util.ByteArray;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.Stateful1;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.Stateful1Builder;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.stateful.capability.tlv.Stateful;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.stateful.capability.tlv.StatefulBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
  25
  26 /**
  27  * Parser for {@link Stateful}
  28  */
  29 public final class CInitiated00StatefulCapabilityTlvParser extends Stateful07StatefulCapabilityTlvParser {
  30
  31     private static final int I_FLAG_OFFSET = 29;
  32
  33     @Override
  34     public Stateful parseTlv(final ByteBuf buffer) throws PCEPDeserializerException {
  35         if (buffer == null) {
  36             return null;
  37         }
  38         if (buffer.readableBytes() < FLAGS_F_LENGTH) {
  39             throw new PCEPDeserializerException("Wrong length of array of bytes. Passed: " + buffer.readableBytes() + "; Expected: >= "
  40                     + FLAGS_F_LENGTH + ".");
  41         }
  42         final BitSet flags = ByteArray.bytesToBitSet(ByteArray.readBytes(buffer, FLAGS_F_LENGTH));
  43
  44         final StatefulBuilder sb = new StatefulBuilder();
  45         sb.setLspUpdateCapability(flags.get(U_FLAG_OFFSET));
  46
  47         if (flags.get(I_FLAG_OFFSET)) {
  48             sb.addAugmentation(Stateful1.class, new Stateful1Builder().setInitiation(Boolean.TRUE).build());
  49         }
  50         return sb.build();
  51     }
  52
  53     @Override
  54     public void serializeTlv(final Tlv tlv, final ByteBuf buffer) {
  55         Preconditions.checkArgument(tlv instanceof Stateful, "StatefulCapabilityTlv is mandatory.");
  56         final Stateful sct = (Stateful) tlv;
  57         final ByteBuf body = Unpooled.buffer();
  58         final BitSet flags = new BitSet(FLAGS_F_LENGTH * Byte.SIZE);
  59         final Stateful1 sfi = sct.getAugmentation(Stateful1.class);
  60         if (sfi != null) {
  61             flags.set(I_FLAG_OFFSET, sfi.isInitiation());
  62         }
  63         if (sct.isLspUpdateCapability() != null) {
  64             flags.set(U_FLAG_OFFSET, sct.isLspUpdateCapability());
  65         }
  66         writeBitSet(flags, FLAGS_F_LENGTH, body);
  67         TlvUtil.formatTlv(TYPE, body, buffer);
  68     }
  69 }