pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/Util.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;
   9
  10 import java.util.Arrays;
  11 import java.util.HashMap;
  12 import java.util.List;
  13
  14 import org.opendaylight.protocol.concepts.Ipv4Util;
  15 import org.opendaylight.protocol.concepts.Ipv6Util;
  16 import org.opendaylight.protocol.pcep.PCEPErrorMapping;
  17 import org.opendaylight.protocol.pcep.PCEPErrorMapping.PCEPErrorIdentifier;
  18 import org.opendaylight.protocol.pcep.PCEPErrors;
  19 import org.opendaylight.protocol.util.ByteArray;
  20 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddress;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.message.rev131007.PcerrBuilder;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Message;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.OpenObject;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.object.AddressFamily;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.endpoints.object.address.family.Ipv4;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcerr.message.PcerrMessageBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcerr.message.pcerr.message.ErrorType;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcerr.message.pcerr.message.Errors;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcerr.message.pcerr.message.ErrorsBuilder;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcerr.message.pcerr.message.error.type.SessionBuilder;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.pcerr.message.pcerr.message.error.type.session.Open;
  32
  33 import com.google.common.collect.Lists;
  34
  35 /**
  36  * Utilities used in pcep-impl
  37  */
  38 public final class Util {
  39
  40         private Util() {
  41         }
  42
  43         public static class BiParsersMap<K, KV, V> {
  44                 private final HashMap<K, KV> kToKv = new HashMap<K, KV>();
  45
  46                 private final HashMap<KV, V> kvToV = new HashMap<KV, V>();
  47
  48                 public void put(final K key, final KV keyValue, final V value) {
  49                         this.kToKv.put(key, keyValue);
  50                         this.kvToV.put(keyValue, value);
  51                 }
  52
  53                 public KV getKeyValueFromKey(final K key) {
  54                         return this.kToKv.get(key);
  55                 }
  56
  57                 public V getValueFromKeyValue(final KV keyValue) {
  58                         return this.kvToV.get(keyValue);
  59                 }
  60         }
  61
  62         public static List<IpAddress> parseAddresses(final byte[] bytes, int offset, final AddressFamily family, final int addrLen) {
  63                 final List<IpAddress> addresses = Lists.newArrayList();
  64
  65                 while (bytes.length > offset) {
  66                         if (family instanceof Ipv4)
  67                                 addresses.add(new IpAddress(Ipv4Util.addressForBytes(ByteArray.subByte(bytes, offset, addrLen))));
  68                         else
  69                                 addresses.add(new IpAddress(Ipv6Util.addressForBytes(ByteArray.subByte(bytes, offset, addrLen))));
  70                         offset += addrLen;
  71                 }
  72
  73                 return addresses;
  74         }
  75
  76         public static void putAddresses(final byte[] destBytes, int offset, final List<IpAddress> addresses, final int addrLen) {
  77                 for (final IpAddress address : addresses) {
  78                         if (address.getIpv4Address() != null)
  79                                 System.arraycopy(address.getIpv4Address().getValue().getBytes(), 0, destBytes, offset, addrLen);
  80                         else
  81                                 System.arraycopy(address.getIpv6Address().getValue().getBytes(), 0, destBytes, offset, addrLen);
  82                         offset += addrLen;
  83                 }
  84         }
  85
  86         public static int getPadding(final int length, final int padding) {
  87                 return (padding - (length % padding)) % padding;
  88         }
  89
  90         public static Message createErrorMessage(final PCEPErrors e, final OpenObject t) {
  91                 final PcerrBuilder errMessageBuilder = new PcerrBuilder();
  92                 final PCEPErrorMapping mapping = PCEPErrorMapping.getInstance();
  93                 final PCEPErrorIdentifier id = mapping.getFromErrorsEnum(e);
  94                 final Errors err = new ErrorsBuilder().setType(id.type).setValue(id.value).build();
  95                 if (t == null)
  96                         return errMessageBuilder.setPcerrMessage(new PcerrMessageBuilder().setErrors(Arrays.asList(err)).build()).build();
  97                 else {
  98                         final ErrorType type = new SessionBuilder().setOpen((Open) t).build();
  99                         return errMessageBuilder.setPcerrMessage(new PcerrMessageBuilder().setErrors(Arrays.asList(err)).setErrorType(type).build()).build();
 100                 }
 101         }
 102 }