| 1 | // Copyright 2004-2007 Jean-Francois Poilpret |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | package net.sourceforge.hiveboard.facade; |
| 16 | |
| 17 | import java.util.ArrayList; |
| 18 | import java.util.Date; |
| 19 | import java.util.HashSet; |
| 20 | import java.util.Iterator; |
| 21 | import java.util.List; |
| 22 | import java.util.Set; |
| 23 | |
| 24 | import org.apache.hivemind.Discardable; |
| 25 | |
| 26 | import net.sourceforge.hiveboard.Account; |
| 27 | import net.sourceforge.hiveboard.Board; |
| 28 | import net.sourceforge.hiveboard.Event; |
| 29 | import net.sourceforge.hiveboard.ServerSettings; |
| 30 | import net.sourceforge.hiveboard.Snapshot; |
| 31 | import net.sourceforge.hiveboard.WhiteBoardUserService; |
| 32 | import net.sourceforge.hiveboard.business.WhiteBoardManager; |
| 33 | import net.sourceforge.hiveboard.security.HiveBoardPrincipal; |
| 34 | import net.sourceforge.hiveevents.Channel; |
| 35 | import net.sourceforge.hiveevents.Filter; |
| 36 | import net.sourceforge.hivelock.SecurityService; |
| 37 | |
| 38 | public class WhiteBoardUserServiceImpl |
| 39 | implements WhiteBoardUserService, |
| 40 | Discardable |
| 41 | { |
| 42 | public WhiteBoardUserServiceImpl( SecurityService security, |
| 43 | WhiteBoardManager manager, |
| 44 | Channel<Event> channel, |
| 45 | long pullTimeout) |
| 46 | { |
| 47 | _manager = manager; |
| 48 | _security = security; |
| 49 | _channel = channel; |
| 50 | _pullTimeout = pullTimeout; |
| 51 | HiveBoardPrincipal user = (HiveBoardPrincipal) security.getCurrentUser(); |
| 52 | _idUser = user.getId(); |
| 53 | |
| 54 | // Listen to channel |
| 55 | _channel.block(); |
| 56 | |
| 57 | // Get all initial events (create accounts and create board) |
| 58 | List<Event> events = _manager.login(_idUser); |
| 59 | Iterator<Event> i = events.iterator(); |
| 60 | while (i.hasNext()) |
| 61 | { |
| 62 | if (!mustPassEvent(i.next())) |
| 63 | { |
| 64 | i.remove(); |
| 65 | } |
| 66 | } |
| 67 | _specificEvents.addAll(events); |
| 68 | |
| 69 | Filter<Event> filter = new Filter<Event>() |
| 70 | { |
| 71 | public boolean passEvent(Event event) |
| 72 | { |
| 73 | return mustPassEvent(event); |
| 74 | } |
| 75 | }; |
| 76 | _idConsumer = _channel.registerPullConsumer(filter); |
| 77 | _channel.unblock(); |
| 78 | } |
| 79 | |
| 80 | public void threadDidDiscardService() |
| 81 | { |
| 82 | _channel.unregisterConsumer(_idConsumer); |
| 83 | } |
| 84 | |
| 85 | protected boolean mustPassEvent(Event event) |
| 86 | { |
| 87 | if (mustPassAccountEvent(event)) |
| 88 | { |
| 89 | return true; |
| 90 | } |
| 91 | if (mustPassBoardManagementEvent(event)) |
| 92 | { |
| 93 | return true; |
| 94 | } |
| 95 | if (mustPassParticipantsManagementEvent(event)) |
| 96 | { |
| 97 | return true; |
| 98 | } |
| 99 | if (mustPassBoardLifeCycleEvent(event)) |
| 100 | { |
| 101 | return true; |
| 102 | } |
| 103 | if (mustPassBoardActionEvent(event)) |
| 104 | { |
| 105 | return true; |
| 106 | } |
| 107 | return false; |
| 108 | } |
| 109 | |
| 110 | protected boolean mustPassAccountEvent(Event event) |
| 111 | { |
| 112 | switch (event.getType()) |
| 113 | { |
| 114 | case EVT_LOGIN: |
| 115 | // Fall through |
| 116 | |
| 117 | case EVT_LOGOUT: |
| 118 | // Fall through |
| 119 | |
| 120 | case EVT_CREATE_ACCOUNT: |
| 121 | // Fall through |
| 122 | |
| 123 | case EVT_MODIFY_ACCOUNT: |
| 124 | // Fall through |
| 125 | |
| 126 | case EVT_DESTROY_ACCOUNT: |
| 127 | // These events are always forwarded to everybody |
| 128 | return true; |
| 129 | |
| 130 | default: |
| 131 | return false; |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | protected boolean mustPassBoardManagementEvent(Event event) |
| 136 | { |
| 137 | Integer where = new Integer(event.getWhere()); |
| 138 | |
| 139 | switch (event.getType()) |
| 140 | { |
| 141 | case EVT_CREATE_BOARD: |
| 142 | // Forward only to board participants |
| 143 | if (event.getBoard().getParticipants().contains(_idUser)) |
| 144 | { |
| 145 | // Add this board to the list of user participated boards |
| 146 | _participateInBoards.add(where); |
| 147 | if (event.getBoard().getInitiator() == _idUser) |
| 148 | { |
| 149 | _initiatorOfBoards.add(where); |
| 150 | } |
| 151 | return true; |
| 152 | } |
| 153 | return false; |
| 154 | |
| 155 | case EVT_MODIFY_BOARD: |
| 156 | if (event.getBoard().getParticipants().contains(_idUser)) |
| 157 | { |
| 158 | // Forward to board participants (new or previous participants) |
| 159 | _participateInBoards.add(where); |
| 160 | if (event.getBoard().getInitiator() == _idUser) |
| 161 | { |
| 162 | _initiatorOfBoards.add(where); |
| 163 | } |
| 164 | else |
| 165 | { |
| 166 | _initiatorOfBoards.remove(where); |
| 167 | } |
| 168 | return true; |
| 169 | } |
| 170 | // Forward only if previously board participant |
| 171 | _presentInBoards.remove(where); |
| 172 | return _participateInBoards.remove(where); |
| 173 | |
| 174 | case EVT_DESTROY_BOARD: |
| 175 | // Forward only to board participants (and remove form participated boards) |
| 176 | _initiatorOfBoards.remove(where); |
| 177 | _presentInBoards.remove(where); |
| 178 | return _participateInBoards.remove(where); |
| 179 | |
| 180 | default: |
| 181 | return false; |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | protected boolean mustPassParticipantsManagementEvent(Event event) |
| 186 | { |
| 187 | Integer where = new Integer(event.getWhere()); |
| 188 | |
| 189 | switch (event.getType()) |
| 190 | { |
| 191 | case EVT_BOARD_ADD_PARTICIPANT: |
| 192 | if (event.getWho() == _idUser) |
| 193 | { |
| 194 | // Add this board to the list of user participated boards |
| 195 | _participateInBoards.add(where); |
| 196 | return (event.getBoard() != null); |
| 197 | } |
| 198 | // Forward only to board participants |
| 199 | return ((event.getBoard() == null) && _participateInBoards.contains(where)); |
| 200 | |
| 201 | case EVT_BOARD_DEL_PARTICIPANT: |
| 202 | if (event.getWho() == _idUser) |
| 203 | { |
| 204 | // Remove this board from the list of user participated boards |
| 205 | _participateInBoards.remove(where); |
| 206 | _presentInBoards.remove(where); |
| 207 | return true; |
| 208 | } |
| 209 | // Forward only to board participants |
| 210 | return _participateInBoards.contains(where); |
| 211 | |
| 212 | default: |
| 213 | return false; |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | protected boolean mustPassBoardLifeCycleEvent(Event event) |
| 218 | { |
| 219 | Integer where = new Integer(event.getWhere()); |
| 220 | |
| 221 | switch (event.getType()) |
| 222 | { |
| 223 | case EVT_JOIN_BOARD: |
| 224 | // Forward only to board participants |
| 225 | if (!_participateInBoards.contains(where)) |
| 226 | { |
| 227 | return false; |
| 228 | } |
| 229 | boolean hasRaster = (event.getRaster() != null); |
| 230 | if (event.getWho() == _idUser) |
| 231 | { |
| 232 | _presentInBoards.add(where); |
| 233 | // Only let pass the one with non-null bulk |
| 234 | return hasRaster; |
| 235 | } |
| 236 | // Only let pass the one with null bulk |
| 237 | return !hasRaster; |
| 238 | |
| 239 | case EVT_LEAVE_BOARD: |
| 240 | // Forward only to board participants |
| 241 | if (!_participateInBoards.contains(where)) |
| 242 | { |
| 243 | return false; |
| 244 | } |
| 245 | if (event.getWho() == _idUser) |
| 246 | { |
| 247 | _presentInBoards.remove(where); |
| 248 | } |
| 249 | return true; |
| 250 | |
| 251 | default: |
| 252 | return false; |
| 253 | } |
| 254 | } |
| 255 | |
| 256 | protected boolean mustPassBoardActionEvent(Event event) |
| 257 | { |
| 258 | Integer where = new Integer(event.getWhere()); |
| 259 | |
| 260 | switch (event.getType()) |
| 261 | { |
| 262 | case EVT_GIVE_TOKEN: |
| 263 | // Forward only to board participants |
| 264 | return _participateInBoards.contains(where); |
| 265 | |
| 266 | case EVT_SEND_DRAWING: |
| 267 | // Fall through |
| 268 | |
| 269 | case EVT_SEND_COMMENT: |
| 270 | // Check that current user is inside board |
| 271 | return _presentInBoards.contains(where); |
| 272 | |
| 273 | case EVT_REQUEST_TOKEN: |
| 274 | // Check that current user is inside board (or is the initiator of that board) |
| 275 | return _presentInBoards.contains(where) |
| 276 | || _initiatorOfBoards.contains(where); |
| 277 | |
| 278 | default: |
| 279 | return false; |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | // Current Account management |
| 284 | public Account getSelfAccount() |
| 285 | { |
| 286 | return _manager.getAccount(_idUser); |
| 287 | } |
| 288 | |
| 289 | public ServerSettings getServerSettings() |
| 290 | { |
| 291 | return _manager.getServerSettings(_idUser); |
| 292 | } |
| 293 | |
| 294 | public void logout() |
| 295 | { |
| 296 | _channel.unblockPullConsumer(_idConsumer); |
| 297 | _security.logout(); |
| 298 | } |
| 299 | |
| 300 | public void changePassword(String password) |
| 301 | { |
| 302 | _manager.changePassword(_idUser, password); |
| 303 | } |
| 304 | |
| 305 | public void join(int board) |
| 306 | { |
| 307 | _manager.join(_idUser, board); |
| 308 | } |
| 309 | |
| 310 | public void comment(int board, String comment) |
| 311 | { |
| 312 | _manager.comment(_idUser, board, comment); |
| 313 | } |
| 314 | |
| 315 | public void draw(int board, byte[] drawing) |
| 316 | { |
| 317 | _manager.draw(_idUser, board, drawing); |
| 318 | } |
| 319 | |
| 320 | public void requestToken(int board) |
| 321 | { |
| 322 | _manager.requestToken(_idUser, board); |
| 323 | } |
| 324 | |
| 325 | public void leave(int board) |
| 326 | { |
| 327 | _manager.leave(_idUser, board); |
| 328 | } |
| 329 | |
| 330 | public void takeSnapshot(int board) |
| 331 | { |
| 332 | _manager.takeSnapshot(_idUser, board); |
| 333 | } |
| 334 | |
| 335 | public void giveToken(int board, int account) |
| 336 | { |
| 337 | _manager.giveToken(_idUser, board, account); |
| 338 | } |
| 339 | |
| 340 | public void addParticipant(int board, int account) |
| 341 | { |
| 342 | _manager.addParticipant(_idUser, board, account); |
| 343 | } |
| 344 | |
| 345 | public void removeParticipant(int board, int account) |
| 346 | { |
| 347 | _manager.removeParticipant(_idUser, board, account); |
| 348 | } |
| 349 | |
| 350 | public void createBoard(Board board) |
| 351 | { |
| 352 | _manager.createBoard(_idUser, board); |
| 353 | } |
| 354 | |
| 355 | public void modifyBoard(Board board) |
| 356 | { |
| 357 | _manager.modifyBoard(_idUser, board); |
| 358 | } |
| 359 | |
| 360 | public void closeBoard(int board) |
| 361 | { |
| 362 | _manager.closeBoard(_idUser, board); |
| 363 | } |
| 364 | |
| 365 | // Events pulling from server |
| 366 | public Event[] pull() |
| 367 | { |
| 368 | Event[] events = getSpecificEvents(); |
| 369 | if (events != null) |
| 370 | { |
| 371 | return events; |
| 372 | } |
| 373 | else |
| 374 | { |
| 375 | return _channel.pull(_idConsumer, _pullTimeout); |
| 376 | } |
| 377 | } |
| 378 | |
| 379 | public void createAccount(Account account) |
| 380 | { |
| 381 | _manager.createAccount(_idUser, account); |
| 382 | } |
| 383 | |
| 384 | public void modifyAccount(Account account) |
| 385 | { |
| 386 | _manager.modifyAccount(_idUser, account); |
| 387 | } |
| 388 | |
| 389 | public void changeAccountPassword(int id, String password) |
| 390 | { |
| 391 | _manager.changeAccountPassword(_idUser, id, password); |
| 392 | } |
| 393 | |
| 394 | public void removeAccount(int idAccount) |
| 395 | { |
| 396 | _manager.removeAccount(_idUser, idAccount); |
| 397 | } |
| 398 | |
| 399 | public Event[] getBoardComments(int board, Date after, Date until) |
| 400 | { |
| 401 | List<Event> events = _manager.getBoardComments(_idUser, board, after, until); |
| 402 | return events.toArray(new Event[events.size()]); |
| 403 | } |
| 404 | |
| 405 | public Snapshot[] getSnapshots(int board) |
| 406 | { |
| 407 | List<Snapshot> snapshots = _manager.getSnapshots(_idUser, board); |
| 408 | return snapshots.toArray(new Snapshot[snapshots.size()]); |
| 409 | } |
| 410 | |
| 411 | public byte[] getSnapshot(int idSnapshot) |
| 412 | { |
| 413 | return _manager.getSnapshot(_idUser, idSnapshot); |
| 414 | } |
| 415 | |
| 416 | protected Event[] getSpecificEvents() |
| 417 | { |
| 418 | synchronized (_specificEvents) |
| 419 | { |
| 420 | if (_specificEvents.isEmpty()) |
| 421 | { |
| 422 | return null; |
| 423 | } |
| 424 | |
| 425 | Event[] events = _specificEvents.toArray(new Event[_specificEvents.size()]); |
| 426 | _specificEvents.clear(); |
| 427 | return events; |
| 428 | } |
| 429 | } |
| 430 | |
| 431 | private final WhiteBoardManager _manager; |
| 432 | private final SecurityService _security; |
| 433 | private final Channel<Event> _channel; |
| 434 | private final int _idConsumer; |
| 435 | private final long _pullTimeout; |
| 436 | private final int _idUser; |
| 437 | private final Set<Integer> _presentInBoards = new HashSet<Integer>(); |
| 438 | private final Set<Integer> _participateInBoards = new HashSet<Integer>(); |
| 439 | private final Set<Integer> _initiatorOfBoards = new HashSet<Integer>(); |
| 440 | private final List<Event> _specificEvents = new ArrayList<Event>(); |
| 441 | } |