mappingservice/lisp-proto/src/main/java/org/opendaylight/lispflowmapping/lisp/serializer/LocatorRecordSerializer.java

   1 /*
   2  * Copyright (c) 2014 Contextream, 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.lispflowmapping.lisp.serializer;
   9
  10 import java.nio.ByteBuffer;
  11
  12 import org.apache.commons.lang3.BooleanUtils;
  13 import org.opendaylight.lispflowmapping.lisp.serializer.address.LispAddressSerializer;
  14 import org.opendaylight.lispflowmapping.lisp.util.ByteUtil;
  15 import org.opendaylight.lispflowmapping.lisp.util.LispAddressStringifier;
  16 import org.opendaylight.lispflowmapping.lisp.util.NumberUtil;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.locatorrecords.LocatorRecord;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.locatorrecords.LocatorRecordBuilder;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.rloc.container.Rloc;
  20
  21 public final class LocatorRecordSerializer {
  22
  23     private static final LocatorRecordSerializer INSTANCE = new LocatorRecordSerializer();
  24
  25     // Private constructor prevents instantiation from other classes
  26     private LocatorRecordSerializer() {
  27     }
  28
  29     public static LocatorRecordSerializer getInstance() {
  30         return INSTANCE;
  31     }
  32
  33     protected LocatorRecord deserialize(ByteBuffer buffer) {
  34         LocatorRecordBuilder builder = new LocatorRecordBuilder();
  35         builder.setPriority((short) ByteUtil.getUnsignedByte(buffer));
  36         builder.setWeight((short) ByteUtil.getUnsignedByte(buffer));
  37         builder.setMulticastPriority((short) ByteUtil.getUnsignedByte(buffer));
  38         builder.setMulticastWeight((short) ByteUtil.getUnsignedByte(buffer));
  39         byte flags = (byte) buffer.getShort();
  40         builder.setLocalLocator(ByteUtil.extractBit(flags, Flags.LOCAL_LOCATOR));
  41         builder.setRlocProbed(ByteUtil.extractBit(flags, Flags.RLOC_PROBED));
  42         builder.setRouted(ByteUtil.extractBit(flags, Flags.ROUTED));
  43         Rloc rloc = LispAddressSerializer.getInstance().deserializeRloc(buffer);
  44         builder.setRloc(rloc);
  45         builder.setLocatorId(LispAddressStringifier.getString(rloc));
  46         return builder.build();
  47     }
  48
  49     public void serialize(ByteBuffer replyBuffer, LocatorRecord record) {
  50         replyBuffer.put((byte) NumberUtil.asShort(record.getPriority()));
  51         replyBuffer.put((byte) NumberUtil.asShort(record.getWeight()));
  52         replyBuffer.put((byte) NumberUtil.asShort(record.getMulticastPriority()));
  53         replyBuffer.put((byte) NumberUtil.asShort(record.getMulticastWeight()));
  54         replyBuffer.position(replyBuffer.position() + Length.UNUSED_FLAGS);
  55         replyBuffer.put((byte) (ByteUtil.boolToBit(BooleanUtils.isTrue(record.isLocalLocator()), Flags.LOCAL_LOCATOR)
  56                 | ByteUtil.boolToBit(BooleanUtils.isTrue(record.isRlocProbed()), Flags.RLOC_PROBED)
  57                 | ByteUtil.boolToBit(BooleanUtils.isTrue(record.isRouted()), Flags.ROUTED)));
  58         LispAddressSerializer.getInstance().serialize(replyBuffer, record.getRloc());
  59     }
  60
  61     public int getSerializationSize(LocatorRecord record) {
  62         return Length.HEADER_SIZE
  63                 + LispAddressSerializer.getInstance().getAddressSize(record.getRloc());
  64     }
  65
  66     private interface Flags {
  67         int LOCAL_LOCATOR = 0x04;
  68         int RLOC_PROBED = 0x02;
  69         int ROUTED = 0x01;
  70     }
  71
  72     private interface Length {
  73         int HEADER_SIZE = 6;
  74         int UNUSED_FLAGS = 1;
  75     }
  76 }