Thejaswi N K | 6a4cd00 | 2015-09-21 17:19:55 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 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.bgp.controller.impl; |
| 17 | |
| 18 | import java.util.Iterator; |
| 19 | import java.util.Map.Entry; |
| 20 | import java.util.Set; |
| 21 | import java.util.TreeMap; |
| 22 | |
| 23 | import org.onlab.packet.Ip4Address; |
| 24 | import org.onosproject.bgp.controller.BGPCfg; |
| 25 | import org.onosproject.bgp.controller.BGPPeerCfg; |
| 26 | import org.slf4j.Logger; |
| 27 | import org.slf4j.LoggerFactory; |
| 28 | |
| 29 | /** |
| 30 | * Provides BGP configuration of this BGP speaker. |
| 31 | */ |
| 32 | public class BGPConfig implements BGPCfg { |
| 33 | |
| 34 | protected static final Logger log = LoggerFactory.getLogger(BGPConfig.class); |
| 35 | |
| 36 | private static final short DEFAULT_HOLD_TIMER = 120; |
| 37 | private static final short DEFAULT_CONN_RETRY_TIME = 120; |
| 38 | private static final short DEFAULT_CONN_RETRY_COUNT = 5; |
| 39 | |
| 40 | private State state = State.INIT; |
| 41 | private int localAs; |
| 42 | private int maxSession; |
| 43 | private boolean lsCapability; |
| 44 | private short holdTime; |
| 45 | private boolean largeAs = false; |
| 46 | private int maxConnRetryTime; |
| 47 | private int maxConnRetryCount; |
| 48 | |
| 49 | private Ip4Address routerId = null; |
| 50 | private TreeMap<String, BGPPeerCfg> bgpPeerTree = new TreeMap<>(); |
| 51 | |
| 52 | /** |
| 53 | * Constructor to initialize the values. |
| 54 | */ |
| 55 | public BGPConfig() { |
| 56 | |
| 57 | this.holdTime = DEFAULT_HOLD_TIMER; |
| 58 | this.maxConnRetryTime = DEFAULT_CONN_RETRY_TIME; |
| 59 | this.maxConnRetryCount = DEFAULT_CONN_RETRY_COUNT; |
| 60 | } |
| 61 | |
| 62 | @Override |
| 63 | public State getState() { |
| 64 | return state; |
| 65 | } |
| 66 | |
| 67 | @Override |
| 68 | public void setState(State state) { |
| 69 | this.state = state; |
| 70 | } |
| 71 | |
| 72 | @Override |
| 73 | public int getAsNumber() { |
| 74 | return this.localAs; |
| 75 | } |
| 76 | |
| 77 | @Override |
| 78 | public void setAsNumber(int localAs) { |
| 79 | |
| 80 | State localState = getState(); |
| 81 | this.localAs = localAs; |
| 82 | |
| 83 | /* Set configuration state */ |
| 84 | if (localState == State.IP_CONFIGURED) { |
| 85 | setState(State.IP_AS_CONFIGURED); |
| 86 | } else { |
| 87 | setState(State.AS_CONFIGURED); |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | @Override |
| 92 | public int getMaxSession() { |
| 93 | return this.maxSession; |
| 94 | } |
| 95 | |
| 96 | @Override |
| 97 | public void setMaxSession(int maxSession) { |
| 98 | this.maxSession = maxSession; |
| 99 | } |
| 100 | |
| 101 | @Override |
| 102 | public boolean getLsCapability() { |
| 103 | return this.lsCapability; |
| 104 | } |
| 105 | |
| 106 | @Override |
| 107 | public void setLsCapability(boolean lsCapability) { |
| 108 | this.lsCapability = lsCapability; |
| 109 | } |
| 110 | |
| 111 | @Override |
| 112 | public String getRouterId() { |
| 113 | if (this.routerId != null) { |
| 114 | return this.routerId.toString(); |
| 115 | } else { |
| 116 | return null; |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | @Override |
| 121 | public void setRouterId(String routerId) { |
| 122 | State localState = getState(); |
| 123 | this.routerId = Ip4Address.valueOf(routerId); |
| 124 | |
| 125 | /* Set configuration state */ |
| 126 | if (localState == State.AS_CONFIGURED) { |
| 127 | setState(State.IP_AS_CONFIGURED); |
| 128 | } else { |
| 129 | setState(State.IP_CONFIGURED); |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | @Override |
| 134 | public boolean addPeer(String routerid, int remoteAs) { |
| 135 | return addPeer(routerid, remoteAs, DEFAULT_HOLD_TIMER); |
| 136 | } |
| 137 | |
| 138 | @Override |
| 139 | public boolean addPeer(String routerid, short holdTime) { |
| 140 | return addPeer(routerid, this.getAsNumber(), holdTime); |
| 141 | } |
| 142 | |
| 143 | @Override |
| 144 | public boolean addPeer(String routerid, int remoteAs, short holdTime) { |
| 145 | BGPPeerConfig lspeer = new BGPPeerConfig(); |
| 146 | if (this.bgpPeerTree.get(routerid) == null) { |
| 147 | |
| 148 | lspeer.setPeerRouterId(routerid); |
| 149 | lspeer.setAsNumber(remoteAs); |
| 150 | lspeer.setHoldtime(holdTime); |
| 151 | lspeer.setState(BGPPeerCfg.State.IDLE); |
| 152 | lspeer.setSelfInnitConnection(false); |
| 153 | |
| 154 | if (this.getAsNumber() == remoteAs) { |
| 155 | lspeer.setIsIBgp(true); |
| 156 | } else { |
| 157 | lspeer.setIsIBgp(false); |
| 158 | } |
| 159 | |
| 160 | this.bgpPeerTree.put(routerid, lspeer); |
| 161 | log.debug("added successfully"); |
| 162 | return true; |
| 163 | } else { |
| 164 | log.debug("already exists"); |
| 165 | return false; |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | @Override |
| 170 | public boolean connectPeer(String routerid) { |
| 171 | BGPPeerCfg lspeer = this.bgpPeerTree.get(routerid); |
| 172 | |
| 173 | if (lspeer != null) { |
| 174 | lspeer.setSelfInnitConnection(true); |
| 175 | // TODO: initiate peer connection |
| 176 | return true; |
| 177 | } |
| 178 | |
| 179 | return false; |
| 180 | } |
| 181 | |
| 182 | @Override |
| 183 | public boolean removePeer(String routerid) { |
| 184 | BGPPeerCfg lspeer = this.bgpPeerTree.get(routerid); |
| 185 | |
| 186 | if (lspeer != null) { |
| 187 | |
| 188 | //TODO DISCONNECT PEER |
| 189 | disconnectPeer(routerid); |
| 190 | lspeer.setSelfInnitConnection(false); |
| 191 | lspeer = this.bgpPeerTree.remove(routerid); |
| 192 | log.debug("Deleted : " + routerid + " successfully"); |
| 193 | |
| 194 | return true; |
| 195 | } else { |
| 196 | log.debug("Did not find : " + routerid); |
| 197 | return false; |
| 198 | } |
| 199 | } |
| 200 | |
| 201 | @Override |
| 202 | public boolean disconnectPeer(String routerid) { |
| 203 | BGPPeerCfg lspeer = this.bgpPeerTree.get(routerid); |
| 204 | |
| 205 | if (lspeer != null) { |
| 206 | |
| 207 | //TODO DISCONNECT PEER |
| 208 | lspeer.setState(BGPPeerCfg.State.IDLE); |
| 209 | lspeer.setSelfInnitConnection(false); |
| 210 | log.debug("Disconnected : " + routerid + " successfully"); |
| 211 | |
| 212 | return true; |
| 213 | } else { |
| 214 | log.debug("Did not find : " + routerid); |
| 215 | return false; |
| 216 | } |
| 217 | } |
| 218 | |
| 219 | @Override |
| 220 | public void setPeerConnState(String routerid, BGPPeerCfg.State state) { |
| 221 | BGPPeerCfg lspeer = this.bgpPeerTree.get(routerid); |
| 222 | |
| 223 | if (lspeer != null) { |
| 224 | lspeer.setState(state); |
| 225 | log.debug("Peer : " + routerid + " is not available"); |
| 226 | |
| 227 | return; |
| 228 | } else { |
| 229 | log.debug("Did not find : " + routerid); |
| 230 | return; |
| 231 | } |
| 232 | } |
| 233 | |
| 234 | @Override |
| 235 | public BGPPeerCfg.State getPeerConnState(String routerid) { |
| 236 | BGPPeerCfg lspeer = this.bgpPeerTree.get(routerid); |
| 237 | |
| 238 | if (lspeer != null) { |
| 239 | return lspeer.getState(); |
| 240 | } else { |
| 241 | return BGPPeerCfg.State.INVALID; //No instance |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | @Override |
| 246 | public boolean isPeerConnectable(String routerid) { |
| 247 | BGPPeerCfg lspeer = this.bgpPeerTree.get(routerid); |
| 248 | |
| 249 | if ((lspeer != null) && lspeer.getState().equals(BGPPeerCfg.State.IDLE)) { |
| 250 | return true; |
| 251 | } |
| 252 | |
| 253 | return false; |
| 254 | } |
| 255 | |
| 256 | @Override |
| 257 | public TreeMap<String, BGPPeerCfg> getPeerTree() { |
| 258 | return this.bgpPeerTree; |
| 259 | } |
| 260 | |
| 261 | @Override |
| 262 | public TreeMap<String, BGPPeerCfg> displayPeers() { |
| 263 | if (this.bgpPeerTree.isEmpty()) { |
| 264 | log.debug("There are no BGP peers"); |
| 265 | } else { |
| 266 | Set<Entry<String, BGPPeerCfg>> set = this.bgpPeerTree.entrySet(); |
| 267 | Iterator<Entry<String, BGPPeerCfg>> list = set.iterator(); |
| 268 | BGPPeerCfg lspeer; |
| 269 | |
| 270 | while (list.hasNext()) { |
| 271 | Entry<String, BGPPeerCfg> me = list.next(); |
| 272 | lspeer = me.getValue(); |
| 273 | log.debug("Peer neighbor IP :" + me.getKey()); |
| 274 | log.debug(", AS Number : " + lspeer.getAsNumber()); |
| 275 | log.debug(", Hold Timer : " + lspeer.getHoldtime()); |
| 276 | log.debug(", Is iBGP : " + lspeer.getIsIBgp()); |
| 277 | } |
| 278 | } |
| 279 | return null; |
| 280 | } |
| 281 | |
| 282 | @Override |
| 283 | public BGPPeerCfg displayPeers(String routerid) { |
| 284 | |
| 285 | if (this.bgpPeerTree.isEmpty()) { |
| 286 | log.debug("There are no BGP peers"); |
| 287 | } else { |
| 288 | return this.bgpPeerTree.get(routerid); |
| 289 | } |
| 290 | return null; |
| 291 | } |
| 292 | |
| 293 | @Override |
| 294 | public void setHoldTime(short holdTime) { |
| 295 | this.holdTime = holdTime; |
| 296 | } |
| 297 | |
| 298 | @Override |
| 299 | public short getHoldTime() { |
| 300 | return this.holdTime; |
| 301 | } |
| 302 | |
| 303 | @Override |
| 304 | public boolean getLargeASCapability() { |
| 305 | return this.largeAs; |
| 306 | } |
| 307 | |
| 308 | @Override |
| 309 | public void setLargeASCapability(boolean largeAs) { |
| 310 | this.largeAs = largeAs; |
| 311 | } |
| 312 | |
| 313 | @Override |
| 314 | public boolean isPeerConfigured(String routerid) { |
| 315 | BGPPeerCfg lspeer = this.bgpPeerTree.get(routerid); |
| 316 | return (lspeer != null) ? true : false; |
| 317 | } |
| 318 | |
| 319 | @Override |
| 320 | public boolean isPeerConnected(String routerid) { |
| 321 | // TODO: is peer connected |
| 322 | return true; |
| 323 | } |
| 324 | |
| 325 | @Override |
| 326 | public int getMaxConnRetryCount() { |
| 327 | return this.maxConnRetryCount; |
| 328 | } |
| 329 | |
| 330 | @Override |
| 331 | public void setMaxConnRetryCout(int retryCount) { |
| 332 | this.maxConnRetryCount = retryCount; |
| 333 | } |
| 334 | |
| 335 | @Override |
| 336 | public int getMaxConnRetryTime() { |
| 337 | return this.maxConnRetryTime; |
| 338 | } |
| 339 | |
| 340 | @Override |
| 341 | public void setMaxConnRetryTime(int retryTime) { |
| 342 | this.maxConnRetryTime = retryTime; |
| 343 | } |
| 344 | } |