Jian Li | 4508352 | 2017-03-20 18:46:07 +0900 | [diff] [blame] | 1 | /* |
Brian O'Connor | ce2a03d | 2017-08-03 19:21:03 -0700 | [diff] [blame^] | 2 | * Copyright 2017-present Open Networking Foundation |
Jian Li | 4508352 | 2017-03-20 18:46:07 +0900 | [diff] [blame] | 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
Jian Li | 2e818b0 | 2017-04-12 19:28:30 +0900 | [diff] [blame] | 16 | package org.onosproject.mapping.codec; |
Jian Li | 4508352 | 2017-03-20 18:46:07 +0900 | [diff] [blame] | 17 | |
| 18 | import com.fasterxml.jackson.databind.node.ObjectNode; |
| 19 | import com.google.common.collect.Maps; |
| 20 | import org.onlab.packet.IpPrefix; |
| 21 | import org.onlab.packet.MacAddress; |
| 22 | import org.onosproject.mapping.addresses.MappingAddress; |
| 23 | import org.onosproject.mapping.addresses.MappingAddresses; |
| 24 | |
| 25 | import java.util.Map; |
| 26 | |
| 27 | import static org.onlab.util.Tools.nullIsIllegal; |
| 28 | |
| 29 | /** |
| 30 | * Decode portion of the mapping address codec. |
| 31 | */ |
| 32 | public final class DecodeMappingAddressCodecHelper { |
| 33 | |
| 34 | private final ObjectNode json; |
| 35 | |
| 36 | protected static final String MISSING_MEMBER_MESSAGE = |
| 37 | " member is required in Mapping Address"; |
| 38 | |
| 39 | private final Map<String, MappingAddressDecoder> decoderMap; |
| 40 | |
| 41 | /** |
| 42 | * Creates a decode mapping address codec object. |
| 43 | * Initializes the lookup map for mapping address subclass decoders. |
| 44 | * |
| 45 | * @param json JSON object to decode |
| 46 | */ |
| 47 | public DecodeMappingAddressCodecHelper(ObjectNode json) { |
| 48 | this.json = json; |
| 49 | decoderMap = Maps.newHashMap(); |
| 50 | |
| 51 | decoderMap.put(MappingAddress.Type.IPV4.name(), new Ipv4TypeDecoder()); |
| 52 | decoderMap.put(MappingAddress.Type.IPV6.name(), new Ipv6TypeDecoder()); |
| 53 | decoderMap.put(MappingAddress.Type.AS.name(), new AsTypeDecoder()); |
| 54 | decoderMap.put(MappingAddress.Type.DN.name(), new DnTypeDecoder()); |
| 55 | decoderMap.put(MappingAddress.Type.ETH.name(), new EthTypeDecoder()); |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * An interface of mapping address type decoder. |
| 60 | */ |
| 61 | private interface MappingAddressDecoder { |
| 62 | MappingAddress decodeMappingAddress(ObjectNode json); |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * Implementation of IPv4 mapping address decoder. |
| 67 | */ |
| 68 | private class Ipv4TypeDecoder implements MappingAddressDecoder { |
| 69 | |
| 70 | @Override |
| 71 | public MappingAddress decodeMappingAddress(ObjectNode json) { |
| 72 | String ip = nullIsIllegal(json.get(MappingAddressCodec.IPV4), |
| 73 | MappingAddressCodec.IPV4 + MISSING_MEMBER_MESSAGE).asText(); |
| 74 | return MappingAddresses.ipv4MappingAddress(IpPrefix.valueOf(ip)); |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | /** |
| 79 | * Implementation of IPv6 mapping address decoder. |
| 80 | */ |
| 81 | private class Ipv6TypeDecoder implements MappingAddressDecoder { |
| 82 | |
| 83 | @Override |
| 84 | public MappingAddress decodeMappingAddress(ObjectNode json) { |
| 85 | String ip = nullIsIllegal(json.get(MappingAddressCodec.IPV6), |
| 86 | MappingAddressCodec.IPV6 + MISSING_MEMBER_MESSAGE).asText(); |
| 87 | return MappingAddresses.ipv6MappingAddress(IpPrefix.valueOf(ip)); |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | /** |
| 92 | * Implementation of AS mapping address decoder. |
| 93 | */ |
| 94 | private class AsTypeDecoder implements MappingAddressDecoder { |
| 95 | |
| 96 | @Override |
| 97 | public MappingAddress decodeMappingAddress(ObjectNode json) { |
| 98 | String as = nullIsIllegal(json.get(MappingAddressCodec.AS), |
| 99 | MappingAddressCodec.AS + MISSING_MEMBER_MESSAGE).asText(); |
| 100 | return MappingAddresses.asMappingAddress(as); |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * Implementation of DN mapping address decoder. |
| 106 | */ |
| 107 | private class DnTypeDecoder implements MappingAddressDecoder { |
| 108 | |
| 109 | @Override |
| 110 | public MappingAddress decodeMappingAddress(ObjectNode json) { |
| 111 | String dn = nullIsIllegal(json.get(MappingAddressCodec.DN), |
| 112 | MappingAddressCodec.DN + MISSING_MEMBER_MESSAGE).asText(); |
| 113 | return MappingAddresses.dnMappingAddress(dn); |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * Implementation of Ethernet mapping address decoder. |
| 119 | */ |
| 120 | private class EthTypeDecoder implements MappingAddressDecoder { |
| 121 | |
| 122 | @Override |
| 123 | public MappingAddress decodeMappingAddress(ObjectNode json) { |
| 124 | MacAddress mac = MacAddress.valueOf(nullIsIllegal(json.get(MappingAddressCodec.MAC), |
| 125 | MappingAddressCodec.MAC + MISSING_MEMBER_MESSAGE).asText()); |
| 126 | return MappingAddresses.ethMappingAddress(mac); |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * Decodes the JSON into a mapping address object. |
| 132 | * |
| 133 | * @return MappingAddress object |
| 134 | * @throws IllegalArgumentException if the JSON is invalid |
| 135 | */ |
| 136 | public MappingAddress decode() { |
| 137 | String type = |
| 138 | nullIsIllegal(json.get(MappingAddressCodec.TYPE), |
| 139 | "Type not specified").asText(); |
| 140 | |
| 141 | MappingAddressDecoder decoder = decoderMap.get(type); |
| 142 | if (decoder != null) { |
| 143 | return decoder.decodeMappingAddress(json); |
| 144 | } |
| 145 | |
| 146 | throw new IllegalArgumentException("Type " + type + " is unknown"); |
| 147 | } |
| 148 | } |