Jian Li | 55648ed | 2017-05-01 02:20:55 +0900 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2017-present Open Networking Laboratory |
| 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 | */ |
| 16 | package org.onosproject.provider.lisp.mapping.util; |
| 17 | |
| 18 | import org.onlab.packet.IpAddress; |
| 19 | import org.onlab.packet.IpPrefix; |
| 20 | import org.onlab.packet.MacAddress; |
| 21 | import org.onosproject.lisp.ctl.ExtensionMappingAddressInterpreter; |
| 22 | import org.onosproject.lisp.msg.types.LispAfiAddress; |
| 23 | import org.onosproject.lisp.msg.types.LispAsAddress; |
| 24 | import org.onosproject.lisp.msg.types.LispDistinguishedNameAddress; |
| 25 | import org.onosproject.lisp.msg.types.LispIpv4Address; |
| 26 | import org.onosproject.lisp.msg.types.LispIpv6Address; |
| 27 | import org.onosproject.lisp.msg.types.LispMacAddress; |
| 28 | import org.onosproject.lisp.msg.types.lcaf.LispLcafAddress; |
| 29 | import org.onosproject.mapping.addresses.ExtensionMappingAddress; |
| 30 | import org.onosproject.mapping.addresses.MappingAddress; |
| 31 | import org.onosproject.mapping.addresses.MappingAddresses; |
| 32 | import org.onosproject.net.Device; |
| 33 | import org.onosproject.net.DeviceId; |
| 34 | import org.onosproject.net.device.DeviceService; |
| 35 | import org.slf4j.Logger; |
| 36 | import org.slf4j.LoggerFactory; |
| 37 | |
| 38 | import static org.onosproject.mapping.addresses.ExtensionMappingAddressType.ExtensionMappingAddressTypes.*; |
| 39 | |
| 40 | /** |
| 41 | * Mapping address builder class. |
| 42 | */ |
| 43 | public final class MappingAddressBuilder { |
| 44 | |
| 45 | private static final Logger log = |
| 46 | LoggerFactory.getLogger(MappingAddressBuilder.class); |
| 47 | |
| 48 | private static final int IPV4_PREFIX_LENGTH = 32; |
| 49 | private static final int IPV6_PREFIX_LENGTH = 128; |
| 50 | |
| 51 | // prevent from instantiation |
| 52 | private MappingAddressBuilder() { |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * Converts LispAfiAddress into abstracted mapping address. |
| 57 | * |
| 58 | * @param deviceService device service |
| 59 | * @param deviceId device identifier |
| 60 | * @param address LispAfiAddress |
| 61 | * @return abstracted mapping address |
| 62 | */ |
| 63 | protected static MappingAddress getAddress(DeviceService deviceService, |
| 64 | DeviceId deviceId, |
| 65 | LispAfiAddress address) { |
| 66 | |
| 67 | if (address == null) { |
| 68 | log.warn("Address is not specified."); |
| 69 | return null; |
| 70 | } |
| 71 | |
| 72 | switch (address.getAfi()) { |
| 73 | case IP4: |
| 74 | return afi2mapping(address); |
| 75 | case IP6: |
| 76 | return afi2mapping(address); |
| 77 | case AS: |
| 78 | int asNum = ((LispAsAddress) address).getASNum(); |
| 79 | return MappingAddresses.asMappingAddress(String.valueOf(asNum)); |
| 80 | case DISTINGUISHED_NAME: |
| 81 | String dn = ((LispDistinguishedNameAddress) |
| 82 | address).getDistinguishedName(); |
| 83 | return MappingAddresses.dnMappingAddress(dn); |
| 84 | case MAC: |
| 85 | MacAddress macAddress = ((LispMacAddress) address).getAddress(); |
| 86 | return MappingAddresses.ethMappingAddress(macAddress); |
| 87 | case LCAF: |
| 88 | return deviceService == null ? null : |
| 89 | lcaf2extension(deviceService, deviceId, (LispLcafAddress) address); |
| 90 | default: |
| 91 | log.warn("Unsupported address type {}", address.getAfi()); |
| 92 | break; |
| 93 | } |
| 94 | |
| 95 | return null; |
| 96 | } |
| 97 | |
| 98 | /** |
| 99 | * Converts AFI address to generalized mapping address. |
| 100 | * |
| 101 | * @param afiAddress IP typed AFI address |
| 102 | * @return generalized mapping address |
| 103 | */ |
| 104 | private static MappingAddress afi2mapping(LispAfiAddress afiAddress) { |
| 105 | switch (afiAddress.getAfi()) { |
| 106 | case IP4: |
| 107 | IpAddress ipv4Address = ((LispIpv4Address) afiAddress).getAddress(); |
| 108 | IpPrefix ipv4Prefix = IpPrefix.valueOf(ipv4Address, IPV4_PREFIX_LENGTH); |
| 109 | return MappingAddresses.ipv4MappingAddress(ipv4Prefix); |
| 110 | case IP6: |
| 111 | IpAddress ipv6Address = ((LispIpv6Address) afiAddress).getAddress(); |
| 112 | IpPrefix ipv6Prefix = IpPrefix.valueOf(ipv6Address, IPV6_PREFIX_LENGTH); |
| 113 | return MappingAddresses.ipv6MappingAddress(ipv6Prefix); |
| 114 | default: |
| 115 | log.warn("Only support to convert IP address type"); |
| 116 | break; |
| 117 | } |
| 118 | return null; |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * Converts LCAF address to extension mapping address. |
| 123 | * |
| 124 | * @param deviceService device service |
| 125 | * @param deviceId device identifier |
| 126 | * @param lcaf LCAF address |
| 127 | * @return extension mapping address |
| 128 | */ |
| 129 | private static MappingAddress lcaf2extension(DeviceService deviceService, |
| 130 | DeviceId deviceId, |
| 131 | LispLcafAddress lcaf) { |
| 132 | |
| 133 | Device device = deviceService.getDevice(deviceId); |
| 134 | |
| 135 | ExtensionMappingAddressInterpreter addressInterpreter; |
| 136 | ExtensionMappingAddress mappingAddress = null; |
| 137 | if (device.is(ExtensionMappingAddressInterpreter.class)) { |
| 138 | addressInterpreter = device.as(ExtensionMappingAddressInterpreter.class); |
| 139 | } else { |
| 140 | addressInterpreter = null; |
| 141 | } |
| 142 | |
| 143 | switch (lcaf.getType()) { |
| 144 | case LIST: |
| 145 | if (addressInterpreter != null && |
| 146 | addressInterpreter.supported(LIST_ADDRESS.type())) { |
| 147 | mappingAddress = addressInterpreter.mapLcafAddress(lcaf); |
| 148 | } |
| 149 | break; |
| 150 | case SEGMENT: |
| 151 | if (addressInterpreter != null && |
| 152 | addressInterpreter.supported(SEGMENT_ADDRESS.type())) { |
| 153 | mappingAddress = addressInterpreter.mapLcafAddress(lcaf); |
| 154 | } |
| 155 | break; |
| 156 | case AS: |
| 157 | if (addressInterpreter != null && |
| 158 | addressInterpreter.supported(AS_ADDRESS.type())) { |
| 159 | mappingAddress = addressInterpreter.mapLcafAddress(lcaf); |
| 160 | } |
| 161 | break; |
| 162 | case APPLICATION_DATA: |
| 163 | if (addressInterpreter != null && |
| 164 | addressInterpreter.supported(APPLICATION_DATA_ADDRESS.type())) { |
| 165 | mappingAddress = addressInterpreter.mapLcafAddress(lcaf); |
| 166 | } |
| 167 | break; |
| 168 | case GEO_COORDINATE: |
| 169 | if (addressInterpreter != null && |
| 170 | addressInterpreter.supported(GEO_COORDINATE_ADDRESS.type())) { |
| 171 | mappingAddress = addressInterpreter.mapLcafAddress(lcaf); |
| 172 | } |
| 173 | break; |
| 174 | case NAT: |
| 175 | if (addressInterpreter != null && |
| 176 | addressInterpreter.supported(NAT_ADDRESS.type())) { |
| 177 | mappingAddress = addressInterpreter.mapLcafAddress(lcaf); |
| 178 | } |
| 179 | break; |
| 180 | case NONCE: |
| 181 | if (addressInterpreter != null && |
| 182 | addressInterpreter.supported(NONCE_ADDRESS.type())) { |
| 183 | mappingAddress = addressInterpreter.mapLcafAddress(lcaf); |
| 184 | } |
| 185 | break; |
| 186 | case MULTICAST: |
| 187 | if (addressInterpreter != null && |
| 188 | addressInterpreter.supported(MULTICAST_ADDRESS.type())) { |
| 189 | mappingAddress = addressInterpreter.mapLcafAddress(lcaf); |
| 190 | } |
| 191 | break; |
| 192 | case TRAFFIC_ENGINEERING: |
| 193 | if (addressInterpreter != null && |
| 194 | addressInterpreter.supported(TRAFFIC_ENGINEERING_ADDRESS.type())) { |
| 195 | mappingAddress = addressInterpreter.mapLcafAddress(lcaf); |
| 196 | } |
| 197 | break; |
| 198 | case SOURCE_DEST: |
| 199 | if (addressInterpreter != null && |
| 200 | addressInterpreter.supported(SOURCE_DEST_ADDRESS.type())) { |
| 201 | mappingAddress = addressInterpreter.mapLcafAddress(lcaf); |
| 202 | } |
| 203 | break; |
| 204 | default: |
| 205 | log.warn("Unsupported extension mapping address type {}", lcaf.getType()); |
| 206 | break; |
| 207 | } |
| 208 | |
| 209 | return mappingAddress != null ? |
| 210 | MappingAddresses.extensionMappingAddressWrapper(mappingAddress, deviceId) : null; |
| 211 | } |
| 212 | } |