pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/subobject/RROPathKeySubobjectParser.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.impl.subobject;
   9
  10 import java.util.Arrays;
  11
  12 import org.opendaylight.protocol.pcep.spi.PCEPDeserializerException;
  13 import org.opendaylight.protocol.pcep.spi.RROSubobjectParser;
  14 import org.opendaylight.protocol.pcep.spi.RROSubobjectSerializer;
  15 import org.opendaylight.protocol.util.ByteArray;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.PathKey;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.PceId;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.reported.route.object.rro.Subobjects;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.reported.route.object.rro.SubobjectsBuilder;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.reported.route.object.rro.subobjects.subobject.type.PathKeyCase;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.reported.route.object.rro.subobjects.subobject.type.PathKeyCaseBuilder;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.reported.route.object.rro.subobjects.subobject.type.path.key._case.PathKeyBuilder;
  23
  24 public class RROPathKeySubobjectParser implements RROSubobjectParser, RROSubobjectSerializer {
  25
  26         public static final int TYPE = 64;
  27
  28         public static final int TYPE128 = 65;
  29
  30         private static final int PK_F_LENGTH = 2;
  31         private static final int PCE_ID_F_LENGTH = 4;
  32
  33         private static final int PCE128_ID_F_LENGTH = 16;
  34
  35         private static final int PK_F_OFFSET = 0;
  36         private static final int PCE_ID_F_OFFSET = PK_F_OFFSET + PK_F_LENGTH;
  37
  38         private static final int CONTENT_LENGTH = PCE_ID_F_OFFSET + PCE_ID_F_LENGTH;
  39         private static final int CONTENT128_LENGTH = PCE_ID_F_OFFSET + PCE128_ID_F_LENGTH;
  40
  41         @Override
  42         public Subobjects parseSubobject(final byte[] buffer) throws PCEPDeserializerException {
  43                 if (buffer == null || buffer.length == 0) {
  44                         throw new IllegalArgumentException("Array of bytes is mandatory. Can't be null or empty.");
  45                 }
  46                 byte[] pceId = null;
  47                 if (buffer.length == CONTENT_LENGTH) {
  48                         pceId = Arrays.copyOfRange(buffer, PCE_ID_F_OFFSET, CONTENT_LENGTH);
  49                 } else if (buffer.length == CONTENT128_LENGTH) {
  50                         pceId = Arrays.copyOfRange(buffer, PCE_ID_F_OFFSET, CONTENT128_LENGTH);
  51                 } else {
  52                         throw new PCEPDeserializerException("Wrong length of array of bytes. Passed: " + buffer.length + "; Expected: >"
  53                                         + CONTENT_LENGTH + ".");
  54                 }
  55                 final int pathKey = ByteArray.bytesToShort(Arrays.copyOfRange(buffer, PK_F_OFFSET, PCE_ID_F_OFFSET));
  56                 final SubobjectsBuilder builder = new SubobjectsBuilder();
  57                 final PathKeyBuilder pBuilder = new PathKeyBuilder();
  58                 pBuilder.setPceId(new PceId(pceId));
  59                 pBuilder.setPathKey(new PathKey(pathKey));
  60                 builder.setSubobjectType(new PathKeyCaseBuilder().setPathKey(pBuilder.build()).build());
  61                 return builder.build();
  62         }
  63
  64         @Override
  65         public byte[] serializeSubobject(final Subobjects subobject) {
  66                 final PathKeyCase pk = (PathKeyCase) subobject.getSubobjectType();
  67                 final int pathKey = pk.getPathKey().getPathKey().getValue();
  68                 final byte[] pceId = pk.getPathKey().getPceId().getBinary();
  69                 final byte[] retBytes = new byte[PK_F_LENGTH + pceId.length];
  70                 System.arraycopy(ByteArray.shortToBytes((short) pathKey), 0, retBytes, PK_F_OFFSET, PK_F_LENGTH);
  71                 System.arraycopy(pceId, 0, retBytes, PCE_ID_F_OFFSET, pceId.length);
  72                 return retBytes;
  73         }
  74
  75         @Override
  76         public int getType() {
  77                 return TYPE;
  78         }
  79
  80         public int getType128() {
  81                 return TYPE128;
  82         }
  83 }