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