pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/subobject/EROAsNumberSubobjectParser.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 org.opendaylight.protocol.pcep.PCEPDeserializerException;
  11 import org.opendaylight.protocol.pcep.subobject.EROAsNumberSubobject;
  12 import org.opendaylight.protocol.pcep.subobject.ExplicitRouteSubobject;
  13 import org.opendaylight.protocol.util.ByteArray;
  14 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.AsNumber;
  15
  16 /**
  17  * Parser for {@link org.opendaylight.protocol.pcep.subobject.EROAsNumberSubobject EROAsNumberSubobject}
  18  */
  19
  20 public class EROAsNumberSubobjectParser {
  21         public static final int AS_NUMBER_LENGTH = 2;
  22
  23         public static final int AS_NUMBER_OFFSET = 0;
  24
  25         public static final int CONTENT_LENGTH = AS_NUMBER_LENGTH + AS_NUMBER_OFFSET;
  26
  27         public static EROAsNumberSubobject parse(final byte[] soContentsBytes, final boolean loose) throws PCEPDeserializerException {
  28                 if (soContentsBytes == null || soContentsBytes.length == 0)
  29                         throw new IllegalArgumentException("Array of bytes is mandatory. Can't be null or empty.");
  30                 if (soContentsBytes.length != CONTENT_LENGTH)
  31                         throw new PCEPDeserializerException("Wrong length of array of bytes. Passed: " + soContentsBytes.length + "; Expected: "
  32                                         + CONTENT_LENGTH + ".");
  33
  34                 return new EROAsNumberSubobject(new AsNumber((long) (ByteArray.bytesToShort(soContentsBytes) & 0xFFFF)), loose);
  35         }
  36
  37         public static byte[] put(final ExplicitRouteSubobject objToSerialize) {
  38                 if (!(objToSerialize instanceof EROAsNumberSubobject))
  39                         throw new IllegalArgumentException("Unknown ExplicitRouteSubobject instance. Passed " + objToSerialize.getClass()
  40                                         + ". Needed EROAsNumberSubobject.");
  41
  42                 final byte[] retBytes = new byte[CONTENT_LENGTH];
  43
  44                 System.arraycopy(ByteArray.longToBytes(((EROAsNumberSubobject) objToSerialize).getASNumber().getValue()), Long.SIZE / Byte.SIZE
  45                                 - AS_NUMBER_LENGTH, retBytes, AS_NUMBER_OFFSET, AS_NUMBER_LENGTH);
  46
  47                 return retBytes;
  48         }
  49 }