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 com.google.common.base.Preconditions;
  11
  12 import io.netty.buffer.ByteBuf;
  13 import io.netty.buffer.Unpooled;
  14
  15 import java.util.BitSet;
  16
  17 import org.opendaylight.protocol.pcep.ietf.stateful07.Stateful07StatefulCapabilityTlvParser;
  18 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
  19 import org.opendaylight.protocol.pcep.spi.TlvUtil;
  20 import org.opendaylight.protocol.util.ByteArray;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.Stateful1;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.crabbe.initiated.rev131126.Stateful1Builder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.stateful.capability.tlv.Stateful;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.stateful.capability.tlv.StatefulBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
  26
  27 /**
  28  * Parser for {@link Stateful}
  29  */
  30 public final class CInitiated00StatefulCapabilityTlvParser extends Stateful07StatefulCapabilityTlvParser {
  31
  32     private static final int I_FLAG_OFFSET = 29;
  33
  34     @Override
  35     public Stateful parseTlv(final ByteBuf buffer) throws PCEPDeserializerException {
  36         if (buffer == null) {
  37             return null;
  38         }
  39         if (buffer.readableBytes() < FLAGS_F_LENGTH) {
  40             throw new PCEPDeserializerException("Wrong length of array of bytes. Passed: " + buffer.readableBytes() + "; Expected: >= "
  41                     + FLAGS_F_LENGTH + ".");
  42         }
  43         final BitSet flags = ByteArray.bytesToBitSet(ByteArray.readBytes(buffer, FLAGS_F_LENGTH));
  44
  45         final StatefulBuilder sb = new StatefulBuilder();
  46         sb.setLspUpdateCapability(flags.get(U_FLAG_OFFSET));
  47
  48         if (flags.get(I_FLAG_OFFSET)) {
  49             sb.addAugmentation(Stateful1.class, new Stateful1Builder().setInitiation(Boolean.TRUE).build());
  50         }
  51         return sb.build();
  52     }
  53
  54     @Override
  55     public void serializeTlv(final Tlv tlv, final ByteBuf buffer) {
  56         Preconditions.checkArgument(tlv != null, "StatefulCapabilityTlv is mandatory.");
  57         final Stateful sct = (Stateful) tlv;
  58         final ByteBuf body = Unpooled.buffer();
  59         final BitSet flags = new BitSet(FLAGS_F_LENGTH * Byte.SIZE);
  60         final Stateful1 sfi = sct.getAugmentation(Stateful1.class);
  61         if (sfi != null) {
  62             flags.set(I_FLAG_OFFSET, sfi.isInitiation());
  63         }
  64         if (sct.isLspUpdateCapability() != null) {
  65             flags.set(U_FLAG_OFFSET, sct.isLspUpdateCapability());
  66         }
  67         body.writeBytes(ByteArray.bitSetToBytes(flags, FLAGS_F_LENGTH));
  68         TlvUtil.formatTlv(TYPE, body, buffer);
  69     }
  70 }