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annotate src/org/eclipse/jetty/server/AsyncContinuation.java @ 892:093460816905
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| author | Franklin Schmidt <fschmidt@gmail.com> |
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| date | Thu, 06 Oct 2016 23:33:35 -0600 |
| parents | b9aa175d9a29 |
| children | 1fc8ee20cb18 |
| rev | line source |
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1 // |
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2 // ======================================================================== |
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3 // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd. |
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4 // ------------------------------------------------------------------------ |
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5 // All rights reserved. This program and the accompanying materials |
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6 // are made available under the terms of the Eclipse Public License v1.0 |
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7 // and Apache License v2.0 which accompanies this distribution. |
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8 // |
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9 // The Eclipse Public License is available at |
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10 // http://www.eclipse.org/legal/epl-v10.html |
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11 // |
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12 // The Apache License v2.0 is available at |
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13 // http://www.opensource.org/licenses/apache2.0.php |
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14 // |
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15 // You may elect to redistribute this code under either of these licenses. |
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16 // ======================================================================== |
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17 // |
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18 |
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19 package org.eclipse.jetty.server; |
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20 |
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21 import javax.servlet.AsyncContext; |
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22 import javax.servlet.AsyncEvent; |
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23 import javax.servlet.AsyncListener; |
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24 import javax.servlet.RequestDispatcher; |
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25 import javax.servlet.ServletException; |
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26 |
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27 import java.util.ArrayList; |
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28 import java.util.List; |
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29 |
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30 import javax.servlet.ServletContext; |
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31 import javax.servlet.ServletRequest; |
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32 import javax.servlet.ServletResponse; |
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33 import javax.servlet.http.HttpServletRequest; |
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34 |
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35 import org.eclipse.jetty.continuation.Continuation; |
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36 import org.eclipse.jetty.continuation.ContinuationThrowable; |
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37 import org.eclipse.jetty.continuation.ContinuationListener; |
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38 import org.eclipse.jetty.io.AsyncEndPoint; |
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39 import org.eclipse.jetty.io.EndPoint; |
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40 import org.eclipse.jetty.server.handler.ContextHandler; |
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41 import org.eclipse.jetty.server.handler.ContextHandler.Context; |
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42 import org.eclipse.jetty.util.URIUtil; |
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43 import org.slf4j.Logger; |
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44 import org.slf4j.LoggerFactory; |
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45 import org.eclipse.jetty.util.thread.Timeout; |
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46 |
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47 /* ------------------------------------------------------------ */ |
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48 /** Implementation of Continuation and AsyncContext interfaces |
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49 * |
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50 */ |
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51 public class AsyncContinuation implements AsyncContext, Continuation |
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52 { |
| 865 | 53 private static final Logger LOG = LoggerFactory.getLogger(AsyncContinuation.class); |
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54 |
| 865 | 55 private final static long DEFAULT_TIMEOUT=30000L; |
| 56 | |
| 57 private final static ContinuationThrowable __exception = new ContinuationThrowable(); | |
| 58 | |
| 59 // STATES: | |
| 60 // handling() suspend() unhandle() resume() complete() doComplete() | |
| 61 // startAsync() dispatch() | |
| 62 // IDLE DISPATCHED | |
| 63 // DISPATCHED ASYNCSTARTED UNCOMPLETED | |
| 64 // ASYNCSTARTED ASYNCWAIT REDISPATCHING COMPLETING | |
| 65 // REDISPATCHING REDISPATCHED | |
| 66 // ASYNCWAIT REDISPATCH COMPLETING | |
| 67 // REDISPATCH REDISPATCHED | |
| 68 // REDISPATCHED ASYNCSTARTED UNCOMPLETED | |
| 69 // COMPLETING UNCOMPLETED UNCOMPLETED | |
| 70 // UNCOMPLETED COMPLETED | |
| 71 // COMPLETED | |
| 72 private static final int __IDLE=0; // Idle request | |
| 73 private static final int __DISPATCHED=1; // Request dispatched to filter/servlet | |
| 74 private static final int __ASYNCSTARTED=2; // Suspend called, but not yet returned to container | |
| 75 private static final int __REDISPATCHING=3;// resumed while dispatched | |
| 76 private static final int __ASYNCWAIT=4; // Suspended and parked | |
| 77 private static final int __REDISPATCH=5; // Has been scheduled | |
| 78 private static final int __REDISPATCHED=6; // Request redispatched to filter/servlet | |
| 79 private static final int __COMPLETING=7; // complete while dispatched | |
| 80 private static final int __UNCOMPLETED=8; // Request is completable | |
| 81 private static final int __COMPLETED=9; // Request is complete | |
| 82 | |
| 83 /* ------------------------------------------------------------ */ | |
| 84 protected AbstractHttpConnection _connection; | |
| 85 private List<AsyncListener> _lastAsyncListeners; | |
| 86 private List<AsyncListener> _asyncListeners; | |
| 87 private List<ContinuationListener> _continuationListeners; | |
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88 |
| 865 | 89 /* ------------------------------------------------------------ */ |
| 90 private int _state; | |
| 91 private boolean _initial; | |
| 92 private boolean _resumed; | |
| 93 private boolean _expired; | |
| 94 private volatile boolean _responseWrapped; | |
| 95 private long _timeoutMs=DEFAULT_TIMEOUT; | |
| 96 private AsyncEventState _event; | |
| 97 private volatile long _expireAt; | |
| 98 private volatile boolean _continuation; | |
| 99 | |
| 100 /* ------------------------------------------------------------ */ | |
| 101 protected AsyncContinuation() | |
| 102 { | |
| 103 _state=__IDLE; | |
| 104 _initial=true; | |
| 105 } | |
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106 |
| 865 | 107 /* ------------------------------------------------------------ */ |
| 108 protected void setConnection(final AbstractHttpConnection connection) | |
| 109 { | |
| 110 synchronized(this) | |
| 111 { | |
| 112 _connection=connection; | |
| 113 } | |
| 114 } | |
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115 |
| 865 | 116 /* ------------------------------------------------------------ */ |
| 117 public void addListener(AsyncListener listener) | |
| 118 { | |
| 119 synchronized(this) | |
| 120 { | |
| 121 if (_asyncListeners==null) | |
| 122 _asyncListeners=new ArrayList<AsyncListener>(); | |
| 123 _asyncListeners.add(listener); | |
| 124 } | |
| 125 } | |
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126 |
| 865 | 127 /* ------------------------------------------------------------ */ |
| 128 public void addListener(AsyncListener listener,ServletRequest request, ServletResponse response) | |
| 129 { | |
| 130 synchronized(this) | |
| 131 { | |
| 132 // TODO handle the request/response ??? | |
| 133 if (_asyncListeners==null) | |
| 134 _asyncListeners=new ArrayList<AsyncListener>(); | |
| 135 _asyncListeners.add(listener); | |
| 136 } | |
| 137 } | |
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138 |
| 865 | 139 /* ------------------------------------------------------------ */ |
| 140 public void addContinuationListener(ContinuationListener listener) | |
| 141 { | |
| 142 synchronized(this) | |
| 143 { | |
| 144 if (_continuationListeners==null) | |
| 145 _continuationListeners=new ArrayList<ContinuationListener>(); | |
| 146 _continuationListeners.add(listener); | |
| 147 } | |
| 148 } | |
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149 |
| 865 | 150 /* ------------------------------------------------------------ */ |
| 151 public void setTimeout(long ms) | |
| 152 { | |
| 153 synchronized(this) | |
| 154 { | |
| 155 _timeoutMs=ms; | |
| 156 } | |
| 157 } | |
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158 |
| 865 | 159 /* ------------------------------------------------------------ */ |
| 160 public long getTimeout() | |
| 161 { | |
| 162 synchronized(this) | |
| 163 { | |
| 164 return _timeoutMs; | |
| 165 } | |
| 166 } | |
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167 |
| 865 | 168 /* ------------------------------------------------------------ */ |
| 169 public AsyncEventState getAsyncEventState() | |
| 170 { | |
| 171 synchronized(this) | |
| 172 { | |
| 173 return _event; | |
| 174 } | |
| 175 } | |
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176 |
| 865 | 177 /* ------------------------------------------------------------ */ |
| 178 /** | |
| 179 * @see org.eclipse.jetty.continuation.Continuation#keepWrappers() | |
| 180 */ | |
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181 |
| 865 | 182 /* ------------------------------------------------------------ */ |
| 183 /** | |
| 184 * @see org.eclipse.jetty.continuation.Continuation#isResponseWrapped() | |
| 185 */ | |
| 186 public boolean isResponseWrapped() | |
| 187 { | |
| 188 return _responseWrapped; | |
| 189 } | |
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190 |
| 865 | 191 /* ------------------------------------------------------------ */ |
| 192 /* (non-Javadoc) | |
| 193 * @see javax.servlet.ServletRequest#isInitial() | |
| 194 */ | |
| 195 public boolean isInitial() | |
| 196 { | |
| 197 synchronized(this) | |
| 198 { | |
| 199 return _initial; | |
| 200 } | |
| 201 } | |
| 202 | |
| 203 public boolean isContinuation() | |
| 204 { | |
| 205 return _continuation; | |
| 206 } | |
| 207 | |
| 208 /* ------------------------------------------------------------ */ | |
| 209 /* (non-Javadoc) | |
| 210 * @see javax.servlet.ServletRequest#isSuspended() | |
| 211 */ | |
| 212 public boolean isSuspended() | |
| 213 { | |
| 214 synchronized(this) | |
| 215 { | |
| 216 switch(_state) | |
| 217 { | |
| 218 case __ASYNCSTARTED: | |
| 219 case __REDISPATCHING: | |
| 220 case __COMPLETING: | |
| 221 case __ASYNCWAIT: | |
| 222 return true; | |
| 223 | |
| 224 default: | |
| 225 return false; | |
| 226 } | |
| 227 } | |
| 228 } | |
| 229 | |
| 230 /* ------------------------------------------------------------ */ | |
| 231 public boolean isSuspending() | |
| 232 { | |
| 233 synchronized(this) | |
| 234 { | |
| 235 switch(_state) | |
| 236 { | |
| 237 case __ASYNCSTARTED: | |
| 238 case __ASYNCWAIT: | |
| 239 return true; | |
| 240 | |
| 241 default: | |
| 242 return false; | |
| 243 } | |
| 244 } | |
| 245 } | |
| 246 | |
| 247 /* ------------------------------------------------------------ */ | |
| 248 public boolean isDispatchable() | |
| 249 { | |
| 250 synchronized(this) | |
| 251 { | |
| 252 switch(_state) | |
| 253 { | |
| 254 case __REDISPATCH: | |
| 255 case __REDISPATCHED: | |
| 256 case __REDISPATCHING: | |
| 257 case __COMPLETING: | |
| 258 return true; | |
| 259 | |
| 260 default: | |
| 261 return false; | |
| 262 } | |
| 263 } | |
| 264 } | |
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265 |
| 865 | 266 /* ------------------------------------------------------------ */ |
| 267 @Override | |
| 268 public String toString() | |
| 269 { | |
| 270 synchronized (this) | |
| 271 { | |
| 272 return super.toString()+"@"+getStatusString(); | |
| 273 } | |
| 274 } | |
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275 |
| 865 | 276 /* ------------------------------------------------------------ */ |
| 277 public String getStatusString() | |
| 278 { | |
| 279 synchronized (this) | |
| 280 { | |
| 281 return | |
| 282 ((_state==__IDLE)?"IDLE": | |
| 283 (_state==__DISPATCHED)?"DISPATCHED": | |
| 284 (_state==__ASYNCSTARTED)?"ASYNCSTARTED": | |
| 285 (_state==__ASYNCWAIT)?"ASYNCWAIT": | |
| 286 (_state==__REDISPATCHING)?"REDISPATCHING": | |
| 287 (_state==__REDISPATCH)?"REDISPATCH": | |
| 288 (_state==__REDISPATCHED)?"REDISPATCHED": | |
| 289 (_state==__COMPLETING)?"COMPLETING": | |
| 290 (_state==__UNCOMPLETED)?"UNCOMPLETED": | |
| 291 (_state==__COMPLETED)?"COMPLETE": | |
| 292 ("UNKNOWN?"+_state))+ | |
| 293 (_initial?",initial":"")+ | |
| 294 (_resumed?",resumed":"")+ | |
| 295 (_expired?",expired":""); | |
| 296 } | |
| 297 } | |
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298 |
| 865 | 299 /* ------------------------------------------------------------ */ |
| 300 /** | |
| 301 * @return false if the handling of the request should not proceed | |
| 302 */ | |
| 303 protected boolean handling() | |
| 304 { | |
| 305 synchronized (this) | |
| 306 { | |
| 307 _continuation=false; | |
| 308 | |
| 309 switch(_state) | |
| 310 { | |
| 311 case __IDLE: | |
| 312 _initial=true; | |
| 313 _state=__DISPATCHED; | |
| 314 if (_lastAsyncListeners!=null) | |
| 315 _lastAsyncListeners.clear(); | |
| 316 if (_asyncListeners!=null) | |
| 317 _asyncListeners.clear(); | |
| 318 else | |
| 319 { | |
| 320 _asyncListeners=_lastAsyncListeners; | |
| 321 _lastAsyncListeners=null; | |
| 322 } | |
| 323 return true; | |
| 324 | |
| 325 case __COMPLETING: | |
| 326 _state=__UNCOMPLETED; | |
| 327 return false; | |
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328 |
| 865 | 329 case __ASYNCWAIT: |
| 330 return false; | |
| 331 | |
| 332 case __REDISPATCH: | |
| 333 _state=__REDISPATCHED; | |
| 334 return true; | |
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335 |
| 865 | 336 default: |
| 337 throw new IllegalStateException(this.getStatusString()); | |
| 338 } | |
| 339 } | |
| 340 } | |
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341 |
| 865 | 342 /* ------------------------------------------------------------ */ |
| 343 /* (non-Javadoc) | |
| 344 * @see javax.servlet.ServletRequest#suspend(long) | |
| 345 */ | |
| 346 private void doSuspend(final ServletContext context, | |
| 347 final ServletRequest request, | |
| 348 final ServletResponse response) | |
| 349 { | |
| 350 synchronized (this) | |
| 351 { | |
| 352 switch(_state) | |
| 353 { | |
| 354 case __DISPATCHED: | |
| 355 case __REDISPATCHED: | |
| 356 _resumed=false; | |
| 357 _expired=false; | |
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358 |
| 865 | 359 if (_event==null || request!=_event.getSuppliedRequest() || response != _event.getSuppliedResponse() || context != _event.getServletContext()) |
| 360 _event=new AsyncEventState(context,request,response); | |
| 361 else | |
| 362 { | |
| 363 _event._dispatchContext=null; | |
| 364 _event._pathInContext=null; | |
| 365 } | |
| 366 _state=__ASYNCSTARTED; | |
| 367 List<AsyncListener> recycle=_lastAsyncListeners; | |
| 368 _lastAsyncListeners=_asyncListeners; | |
| 369 _asyncListeners=recycle; | |
| 370 if (_asyncListeners!=null) | |
| 371 _asyncListeners.clear(); | |
| 372 break; | |
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373 |
| 865 | 374 default: |
| 375 throw new IllegalStateException(this.getStatusString()); | |
| 376 } | |
| 377 } | |
| 378 | |
| 379 if (_lastAsyncListeners!=null) | |
| 380 { | |
| 381 for (AsyncListener listener : _lastAsyncListeners) | |
| 382 { | |
| 383 try | |
| 384 { | |
| 385 listener.onStartAsync(_event); | |
| 386 } | |
| 387 catch(Exception e) | |
| 388 { | |
| 389 LOG.warn("",e); | |
| 390 } | |
| 391 } | |
| 392 } | |
| 393 } | |
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394 |
| 865 | 395 /* ------------------------------------------------------------ */ |
| 396 /** | |
| 397 * Signal that the HttpConnection has finished handling the request. | |
| 398 * For blocking connectors, this call may block if the request has | |
| 399 * been suspended (startAsync called). | |
| 400 * @return true if handling is complete, false if the request should | |
| 401 * be handled again (eg because of a resume that happened before unhandle was called) | |
| 402 */ | |
| 403 protected boolean unhandle() | |
| 404 { | |
| 405 synchronized (this) | |
| 406 { | |
| 407 switch(_state) | |
| 408 { | |
| 409 case __REDISPATCHED: | |
| 410 case __DISPATCHED: | |
| 411 _state=__UNCOMPLETED; | |
| 412 return true; | |
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413 |
| 865 | 414 case __IDLE: |
| 415 throw new IllegalStateException(this.getStatusString()); | |
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416 |
| 865 | 417 case __ASYNCSTARTED: |
| 418 _initial=false; | |
| 419 _state=__ASYNCWAIT; | |
| 420 scheduleTimeout(); // could block and change state. | |
| 421 if (_state==__ASYNCWAIT) | |
| 422 return true; | |
| 423 else if (_state==__COMPLETING) | |
| 424 { | |
| 425 _state=__UNCOMPLETED; | |
| 426 return true; | |
| 427 } | |
| 428 _initial=false; | |
| 429 _state=__REDISPATCHED; | |
| 430 return false; | |
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431 |
| 865 | 432 case __REDISPATCHING: |
| 433 _initial=false; | |
| 434 _state=__REDISPATCHED; | |
| 435 return false; | |
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436 |
| 865 | 437 case __COMPLETING: |
| 438 _initial=false; | |
| 439 _state=__UNCOMPLETED; | |
| 440 return true; | |
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441 |
| 865 | 442 default: |
| 443 throw new IllegalStateException(this.getStatusString()); | |
| 444 } | |
| 445 } | |
| 446 } | |
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447 |
| 865 | 448 /* ------------------------------------------------------------ */ |
| 449 public void dispatch() | |
| 450 { | |
| 451 boolean dispatch=false; | |
| 452 synchronized (this) | |
| 453 { | |
| 454 switch(_state) | |
| 455 { | |
| 456 case __ASYNCSTARTED: | |
| 457 _state=__REDISPATCHING; | |
| 458 _resumed=true; | |
| 459 return; | |
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460 |
| 865 | 461 case __ASYNCWAIT: |
| 462 dispatch=!_expired; | |
| 463 _state=__REDISPATCH; | |
| 464 _resumed=true; | |
| 465 break; | |
| 466 | |
| 467 case __REDISPATCH: | |
| 468 return; | |
| 469 | |
| 470 default: | |
| 471 throw new IllegalStateException(this.getStatusString()); | |
| 472 } | |
| 473 } | |
| 474 | |
| 475 if (dispatch) | |
| 476 { | |
| 477 cancelTimeout(); | |
| 478 scheduleDispatch(); | |
| 479 } | |
| 480 } | |
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481 |
| 865 | 482 /* ------------------------------------------------------------ */ |
| 483 protected void expired() | |
| 484 { | |
| 485 final List<ContinuationListener> cListeners; | |
| 486 final List<AsyncListener> aListeners; | |
| 487 synchronized (this) | |
| 488 { | |
| 489 switch(_state) | |
| 490 { | |
| 491 case __ASYNCSTARTED: | |
| 492 case __ASYNCWAIT: | |
| 493 cListeners=_continuationListeners; | |
| 494 aListeners=_asyncListeners; | |
| 495 break; | |
| 496 default: | |
| 497 cListeners=null; | |
| 498 aListeners=null; | |
| 499 return; | |
| 500 } | |
| 501 _expired=true; | |
| 502 } | |
| 503 | |
| 504 if (aListeners!=null) | |
| 505 { | |
| 506 for (AsyncListener listener : aListeners) | |
| 507 { | |
| 508 try | |
| 509 { | |
| 510 listener.onTimeout(_event); | |
| 511 } | |
| 512 catch(Exception e) | |
| 513 { | |
| 514 LOG.debug("",e); | |
| 515 _connection.getRequest().setAttribute(RequestDispatcher.ERROR_EXCEPTION,e); | |
| 516 break; | |
| 517 } | |
| 518 } | |
| 519 } | |
| 520 if (cListeners!=null) | |
| 521 { | |
| 522 for (ContinuationListener listener : cListeners) | |
| 523 { | |
| 524 try | |
| 525 { | |
| 526 listener.onTimeout(this); | |
| 527 } | |
| 528 catch(Exception e) | |
| 529 { | |
| 530 LOG.warn("",e); | |
| 531 } | |
| 532 } | |
| 533 } | |
| 534 | |
| 535 synchronized (this) | |
| 536 { | |
| 537 switch(_state) | |
| 538 { | |
| 539 case __ASYNCSTARTED: | |
| 540 case __ASYNCWAIT: | |
| 541 dispatch(); | |
| 542 break; | |
| 543 | |
| 544 default: | |
| 545 if (!_continuation) | |
| 546 _expired=false; | |
| 547 } | |
| 548 } | |
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549 |
| 865 | 550 scheduleDispatch(); |
| 551 } | |
| 552 | |
| 553 /* ------------------------------------------------------------ */ | |
| 554 /* (non-Javadoc) | |
| 555 * @see javax.servlet.ServletRequest#complete() | |
| 556 */ | |
| 557 public void complete() | |
| 558 { | |
| 559 // just like resume, except don't set _resumed=true; | |
| 560 boolean dispatch=false; | |
| 561 synchronized (this) | |
| 562 { | |
| 563 switch(_state) | |
| 564 { | |
| 565 case __DISPATCHED: | |
| 566 case __REDISPATCHED: | |
| 567 throw new IllegalStateException(this.getStatusString()); | |
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568 |
| 865 | 569 case __ASYNCSTARTED: |
| 570 _state=__COMPLETING; | |
| 571 return; | |
| 572 | |
| 573 case __ASYNCWAIT: | |
| 574 _state=__COMPLETING; | |
| 575 dispatch=!_expired; | |
| 576 break; | |
| 577 | |
| 578 default: | |
| 579 throw new IllegalStateException(this.getStatusString()); | |
| 580 } | |
| 581 } | |
| 582 | |
| 583 if (dispatch) | |
| 584 { | |
| 585 cancelTimeout(); | |
| 586 scheduleDispatch(); | |
| 587 } | |
| 588 } | |
| 589 | |
| 590 /* ------------------------------------------------------------ */ | |
| 591 /* (non-Javadoc) | |
| 592 * @see javax.servlet.ServletRequest#complete() | |
| 593 */ | |
| 594 public void errorComplete() | |
| 595 { | |
| 596 // just like complete except can overrule a prior dispatch call; | |
| 597 synchronized (this) | |
| 598 { | |
| 599 switch(_state) | |
| 600 { | |
| 601 case __REDISPATCHING: | |
| 602 case __ASYNCSTARTED: | |
| 603 _state=__COMPLETING; | |
| 604 _resumed=false; | |
| 605 return; | |
| 606 | |
| 607 case __COMPLETING: | |
| 608 return; | |
| 609 | |
| 610 default: | |
| 611 throw new IllegalStateException(this.getStatusString()); | |
| 612 } | |
| 613 } | |
| 614 } | |
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615 |
| 865 | 616 /* ------------------------------------------------------------ */ |
| 617 @Override | |
| 618 public <T extends AsyncListener> T createListener(Class<T> clazz) throws ServletException | |
| 619 { | |
| 620 try | |
| 621 { | |
| 622 // TODO inject | |
| 623 return clazz.newInstance(); | |
| 624 } | |
| 625 catch(Exception e) | |
| 626 { | |
| 627 throw new ServletException(e); | |
| 628 } | |
| 629 } | |
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630 |
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631 |
| 865 | 632 /* ------------------------------------------------------------ */ |
| 633 /* (non-Javadoc) | |
| 634 * @see javax.servlet.ServletRequest#complete() | |
| 635 */ | |
| 636 protected void doComplete(Throwable ex) | |
| 637 { | |
| 638 final List<ContinuationListener> cListeners; | |
| 639 final List<AsyncListener> aListeners; | |
| 640 synchronized (this) | |
| 641 { | |
| 642 switch(_state) | |
| 643 { | |
| 644 case __UNCOMPLETED: | |
| 645 _state=__COMPLETED; | |
| 646 cListeners=_continuationListeners; | |
| 647 aListeners=_asyncListeners; | |
| 648 break; | |
| 649 | |
| 650 default: | |
| 651 cListeners=null; | |
| 652 aListeners=null; | |
| 653 throw new IllegalStateException(this.getStatusString()); | |
| 654 } | |
| 655 } | |
| 656 | |
| 657 if (aListeners!=null) | |
| 658 { | |
| 659 for (AsyncListener listener : aListeners) | |
| 660 { | |
| 661 try | |
| 662 { | |
| 663 if (ex!=null) | |
| 664 { | |
| 665 _event.getSuppliedRequest().setAttribute(RequestDispatcher.ERROR_EXCEPTION,ex); | |
| 666 _event.getSuppliedRequest().setAttribute(RequestDispatcher.ERROR_MESSAGE,ex.getMessage()); | |
| 667 listener.onError(_event); | |
| 668 } | |
| 669 else | |
| 670 listener.onComplete(_event); | |
| 671 } | |
| 672 catch(Exception e) | |
| 673 { | |
| 674 LOG.warn("",e); | |
| 675 } | |
| 676 } | |
| 677 } | |
| 678 if (cListeners!=null) | |
| 679 { | |
| 680 for (ContinuationListener listener : cListeners) | |
| 681 { | |
| 682 try | |
| 683 { | |
| 684 listener.onComplete(this); | |
| 685 } | |
| 686 catch(Exception e) | |
| 687 { | |
| 688 LOG.warn("",e); | |
| 689 } | |
| 690 } | |
| 691 } | |
| 692 } | |
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|
693 |
| 865 | 694 /* ------------------------------------------------------------ */ |
| 695 protected void recycle() | |
| 696 { | |
| 697 synchronized (this) | |
| 698 { | |
| 699 switch(_state) | |
| 700 { | |
| 701 case __DISPATCHED: | |
| 702 case __REDISPATCHED: | |
| 703 throw new IllegalStateException(getStatusString()); | |
| 704 default: | |
| 705 _state=__IDLE; | |
| 706 } | |
| 707 _initial = true; | |
| 708 _resumed=false; | |
| 709 _expired=false; | |
| 710 _responseWrapped=false; | |
| 711 cancelTimeout(); | |
| 712 _timeoutMs=DEFAULT_TIMEOUT; | |
| 713 _continuationListeners=null; | |
| 714 } | |
| 715 } | |
| 716 | |
| 717 /* ------------------------------------------------------------ */ | |
| 718 public void cancel() | |
| 719 { | |
| 720 synchronized (this) | |
| 721 { | |
| 722 cancelTimeout(); | |
| 723 _continuationListeners=null; | |
| 724 } | |
| 725 } | |
|
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|
726 |
| 865 | 727 /* ------------------------------------------------------------ */ |
| 728 protected void scheduleDispatch() | |
| 729 { | |
| 730 EndPoint endp=_connection.getEndPoint(); | |
| 731 if (!endp.isBlocking()) | |
| 732 { | |
| 733 ((AsyncEndPoint)endp).asyncDispatch(); | |
| 734 } | |
| 735 } | |
|
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|
736 |
| 865 | 737 /* ------------------------------------------------------------ */ |
| 738 protected void scheduleTimeout() | |
| 739 { | |
| 740 EndPoint endp=_connection.getEndPoint(); | |
| 741 if (_timeoutMs>0) | |
| 742 { | |
| 743 if (endp.isBlocking()) | |
| 744 { | |
| 745 synchronized(this) | |
| 746 { | |
| 747 _expireAt = System.currentTimeMillis()+_timeoutMs; | |
| 748 long wait=_timeoutMs; | |
| 749 while (_expireAt>0 && wait>0 && _connection.getServer().isRunning()) | |
| 750 { | |
| 751 try | |
| 752 { | |
| 753 this.wait(wait); | |
| 754 } | |
| 755 catch (InterruptedException e) | |
| 756 { | |
| 757 LOG.trace("",e); | |
| 758 } | |
| 759 wait=_expireAt-System.currentTimeMillis(); | |
| 760 } | |
|
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|
761 |
| 865 | 762 if (_expireAt>0 && wait<=0 && _connection.getServer().isRunning()) |
| 763 { | |
| 764 expired(); | |
| 765 } | |
| 766 } | |
| 767 } | |
| 768 else | |
| 769 { | |
| 770 ((AsyncEndPoint)endp).scheduleTimeout(_event._timeout,_timeoutMs); | |
| 771 } | |
| 772 } | |
| 773 } | |
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|
774 |
| 865 | 775 /* ------------------------------------------------------------ */ |
| 776 protected void cancelTimeout() | |
| 777 { | |
| 778 EndPoint endp=_connection.getEndPoint(); | |
| 779 if (endp.isBlocking()) | |
| 780 { | |
| 781 synchronized(this) | |
| 782 { | |
| 783 _expireAt=0; | |
| 784 this.notifyAll(); | |
| 785 } | |
| 786 } | |
| 787 else | |
| 788 { | |
| 789 final AsyncEventState event=_event; | |
| 790 if (event!=null) | |
| 791 { | |
| 792 ((AsyncEndPoint)endp).cancelTimeout(event._timeout); | |
| 793 } | |
| 794 } | |
| 795 } | |
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|
796 |
| 865 | 797 /* ------------------------------------------------------------ */ |
| 798 public boolean isCompleting() | |
| 799 { | |
| 800 synchronized (this) | |
| 801 { | |
| 802 return _state==__COMPLETING; | |
| 803 } | |
| 804 } | |
| 805 | |
| 806 /* ------------------------------------------------------------ */ | |
| 807 boolean isUncompleted() | |
| 808 { | |
| 809 synchronized (this) | |
| 810 { | |
| 811 return _state==__UNCOMPLETED; | |
| 812 } | |
| 813 } | |
| 814 | |
| 815 /* ------------------------------------------------------------ */ | |
| 816 public boolean isComplete() | |
| 817 { | |
| 818 synchronized (this) | |
| 819 { | |
| 820 return _state==__COMPLETED; | |
| 821 } | |
| 822 } | |
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|
823 |
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|
824 |
| 865 | 825 /* ------------------------------------------------------------ */ |
| 826 public boolean isAsyncStarted() | |
| 827 { | |
| 828 synchronized (this) | |
| 829 { | |
| 830 switch(_state) | |
| 831 { | |
| 832 case __ASYNCSTARTED: | |
| 833 case __REDISPATCHING: | |
| 834 case __REDISPATCH: | |
| 835 case __ASYNCWAIT: | |
| 836 return true; | |
|
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|
837 |
| 865 | 838 default: |
| 839 return false; | |
| 840 } | |
| 841 } | |
| 842 } | |
|
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|
843 |
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|
844 |
| 865 | 845 /* ------------------------------------------------------------ */ |
| 846 public boolean isAsync() | |
| 847 { | |
| 848 synchronized (this) | |
| 849 { | |
| 850 switch(_state) | |
| 851 { | |
| 852 case __IDLE: | |
| 853 case __DISPATCHED: | |
| 854 case __UNCOMPLETED: | |
| 855 case __COMPLETED: | |
| 856 return false; | |
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|
857 |
| 865 | 858 default: |
| 859 return true; | |
| 860 } | |
| 861 } | |
| 862 } | |
|
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|
863 |
| 865 | 864 /* ------------------------------------------------------------ */ |
| 865 public void dispatch(ServletContext context, String path) | |
| 866 { | |
| 867 _event._dispatchContext=context; | |
| 868 _event.setPath(path); | |
| 869 dispatch(); | |
| 870 } | |
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|
871 |
| 865 | 872 /* ------------------------------------------------------------ */ |
| 873 public void dispatch(String path) | |
| 874 { | |
| 875 _event.setPath(path); | |
| 876 dispatch(); | |
| 877 } | |
|
802
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|
878 |
| 865 | 879 /* ------------------------------------------------------------ */ |
| 880 public Request getBaseRequest() | |
| 881 { | |
| 882 return _connection.getRequest(); | |
| 883 } | |
| 884 | |
| 885 /* ------------------------------------------------------------ */ | |
| 886 public ServletRequest getRequest() | |
| 887 { | |
| 888 if (_event!=null) | |
| 889 return _event.getSuppliedRequest(); | |
| 890 return _connection.getRequest(); | |
| 891 } | |
|
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changeset
|
892 |
| 865 | 893 /* ------------------------------------------------------------ */ |
| 894 public ServletResponse getResponse() | |
| 895 { | |
| 896 if (_responseWrapped && _event!=null && _event.getSuppliedResponse()!=null) | |
| 897 return _event.getSuppliedResponse(); | |
| 898 return _connection.getResponse(); | |
| 899 } | |
|
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|
900 |
| 865 | 901 /* ------------------------------------------------------------ */ |
| 902 public void start(final Runnable run) | |
| 903 { | |
| 904 final AsyncEventState event=_event; | |
| 905 if (event!=null) | |
| 906 { | |
|
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|
907 _connection.getServer().threadPool.execute(new Runnable() |
| 865 | 908 { |
| 909 public void run() | |
| 910 { | |
| 911 ((Context)event.getServletContext()).getContextHandler().handle(run); | |
| 912 } | |
| 913 }); | |
| 914 } | |
| 915 } | |
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|
916 |
| 865 | 917 /* ------------------------------------------------------------ */ |
| 918 public boolean hasOriginalRequestAndResponse() | |
| 919 { | |
| 920 synchronized (this) | |
| 921 { | |
| 922 return (_event!=null && _event.getSuppliedRequest()==_connection._request && _event.getSuppliedResponse()==_connection._response); | |
| 923 } | |
| 924 } | |
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|
925 |
| 865 | 926 /* ------------------------------------------------------------ */ |
| 927 public ContextHandler getContextHandler() | |
| 928 { | |
| 929 final AsyncEventState event=_event; | |
| 930 if (event!=null) | |
| 931 return ((Context)event.getServletContext()).getContextHandler(); | |
| 932 return null; | |
| 933 } | |
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|
934 |
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|
935 |
| 865 | 936 /* ------------------------------------------------------------ */ |
| 937 /** | |
| 938 * @see Continuation#isResumed() | |
| 939 */ | |
| 940 public boolean isResumed() | |
| 941 { | |
| 942 synchronized (this) | |
| 943 { | |
| 944 return _resumed; | |
| 945 } | |
| 946 } | |
| 947 /* ------------------------------------------------------------ */ | |
| 948 /** | |
| 949 * @see Continuation#isExpired() | |
| 950 */ | |
| 951 public boolean isExpired() | |
| 952 { | |
| 953 synchronized (this) | |
| 954 { | |
| 955 return _expired; | |
| 956 } | |
| 957 } | |
|
802
3428c60d7cfc
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|
958 |
| 865 | 959 /* ------------------------------------------------------------ */ |
| 960 /** | |
| 961 * @see Continuation#resume() | |
| 962 */ | |
| 963 public void resume() | |
| 964 { | |
| 965 dispatch(); | |
| 966 } | |
| 967 | |
|
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|
968 |
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|
969 |
| 865 | 970 /* ------------------------------------------------------------ */ |
| 971 protected void startAsync(final ServletContext context, | |
| 972 final ServletRequest request, | |
| 973 final ServletResponse response) | |
| 974 { | |
| 975 synchronized (this) | |
| 976 { | |
| 977 _responseWrapped=!(response instanceof Response); | |
| 978 doSuspend(context,request,response); | |
| 979 if (request instanceof HttpServletRequest) | |
| 980 { | |
| 981 _event._pathInContext = URIUtil.addPaths(((HttpServletRequest)request).getServletPath(),((HttpServletRequest)request).getPathInfo()); | |
| 982 } | |
| 983 } | |
| 984 } | |
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985 |
| 865 | 986 /* ------------------------------------------------------------ */ |
| 987 protected void startAsync() | |
| 988 { | |
| 989 _responseWrapped=false; | |
| 990 _continuation=false; | |
| 991 doSuspend(_connection.getRequest().getServletContext(),_connection.getRequest(),_connection.getResponse()); | |
| 992 } | |
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993 |
| 865 | 994 |
| 995 /* ------------------------------------------------------------ */ | |
| 996 /** | |
| 997 * @see Continuation#suspend() | |
| 998 */ | |
| 999 public void suspend(ServletResponse response) | |
| 1000 { | |
| 1001 _continuation=true; | |
| 1002 _responseWrapped=!(response instanceof Response); | |
| 1003 doSuspend(_connection.getRequest().getServletContext(),_connection.getRequest(),response); | |
| 1004 } | |
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1005 |
| 865 | 1006 /* ------------------------------------------------------------ */ |
| 1007 /** | |
| 1008 * @see Continuation#suspend() | |
| 1009 */ | |
| 1010 public void suspend() | |
| 1011 { | |
| 1012 _responseWrapped=false; | |
| 1013 _continuation=true; | |
| 1014 doSuspend(_connection.getRequest().getServletContext(),_connection.getRequest(),_connection.getResponse()); | |
| 1015 } | |
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1016 |
| 865 | 1017 /* ------------------------------------------------------------ */ |
| 1018 /** | |
| 1019 * @see org.eclipse.jetty.continuation.Continuation#getServletResponse() | |
| 1020 */ | |
| 1021 public ServletResponse getServletResponse() | |
| 1022 { | |
| 1023 if (_responseWrapped && _event!=null && _event.getSuppliedResponse()!=null) | |
| 1024 return _event.getSuppliedResponse(); | |
| 1025 return _connection.getResponse(); | |
| 1026 } | |
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1027 |
| 865 | 1028 /* ------------------------------------------------------------ */ |
| 1029 /** | |
| 1030 * @see org.eclipse.jetty.continuation.Continuation#getAttribute(java.lang.String) | |
| 1031 */ | |
| 1032 public Object getAttribute(String name) | |
| 1033 { | |
| 1034 return _connection.getRequest().getAttribute(name); | |
| 1035 } | |
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1036 |
| 865 | 1037 /* ------------------------------------------------------------ */ |
| 1038 /** | |
| 1039 * @see org.eclipse.jetty.continuation.Continuation#removeAttribute(java.lang.String) | |
| 1040 */ | |
| 1041 public void removeAttribute(String name) | |
| 1042 { | |
| 1043 _connection.getRequest().removeAttribute(name); | |
| 1044 } | |
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1045 |
| 865 | 1046 /* ------------------------------------------------------------ */ |
| 1047 /** | |
| 1048 * @see org.eclipse.jetty.continuation.Continuation#setAttribute(java.lang.String, java.lang.Object) | |
| 1049 */ | |
| 1050 public void setAttribute(String name, Object attribute) | |
| 1051 { | |
| 1052 _connection.getRequest().setAttribute(name,attribute); | |
| 1053 } | |
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1054 |
| 865 | 1055 /* ------------------------------------------------------------ */ |
| 1056 /** | |
| 1057 * @see org.eclipse.jetty.continuation.Continuation#undispatch() | |
| 1058 */ | |
| 1059 public void undispatch() | |
| 1060 { | |
| 1061 if (isSuspended()) | |
| 1062 { | |
| 1063 if (LOG.isDebugEnabled()) | |
| 1064 throw new ContinuationThrowable(); | |
| 1065 else | |
| 1066 throw __exception; | |
| 1067 } | |
| 1068 throw new IllegalStateException("!suspended"); | |
| 1069 } | |
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1070 |
| 865 | 1071 /* ------------------------------------------------------------ */ |
| 1072 /* ------------------------------------------------------------ */ | |
| 1073 public class AsyncTimeout extends Timeout.Task implements Runnable | |
| 1074 { | |
| 1075 @Override | |
| 1076 public void expired() | |
| 1077 { | |
| 1078 AsyncContinuation.this.expired(); | |
| 1079 } | |
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1080 |
| 865 | 1081 @Override |
| 1082 public void run() | |
| 1083 { | |
| 1084 AsyncContinuation.this.expired(); | |
| 1085 } | |
| 1086 } | |
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1087 |
| 865 | 1088 /* ------------------------------------------------------------ */ |
| 1089 /* ------------------------------------------------------------ */ | |
| 1090 public class AsyncEventState extends AsyncEvent | |
| 1091 { | |
| 1092 private final ServletContext _suspendedContext; | |
| 1093 private ServletContext _dispatchContext; | |
| 1094 private String _pathInContext; | |
| 1095 private Timeout.Task _timeout= new AsyncTimeout(); | |
| 1096 | |
| 1097 public AsyncEventState(ServletContext context, ServletRequest request, ServletResponse response) | |
| 1098 { | |
| 1099 super(AsyncContinuation.this, request,response); | |
| 1100 _suspendedContext=context; | |
| 1101 // Get the base request So we can remember the initial paths | |
| 1102 Request r=_connection.getRequest(); | |
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1103 |
| 865 | 1104 // If we haven't been async dispatched before |
| 1105 if (r.getAttribute(AsyncContext.ASYNC_REQUEST_URI)==null) | |
| 1106 { | |
| 1107 // We are setting these attributes during startAsync, when the spec implies that | |
| 1108 // they are only available after a call to AsyncContext.dispatch(...); | |
| 1109 | |
| 1110 // have we been forwarded before? | |
| 1111 String uri=(String)r.getAttribute(RequestDispatcher.FORWARD_REQUEST_URI); | |
| 1112 if (uri!=null) | |
| 1113 { | |
| 1114 r.setAttribute(AsyncContext.ASYNC_REQUEST_URI,uri); | |
| 1115 r.setAttribute(AsyncContext.ASYNC_CONTEXT_PATH,r.getAttribute(RequestDispatcher.FORWARD_CONTEXT_PATH)); | |
| 1116 r.setAttribute(AsyncContext.ASYNC_SERVLET_PATH,r.getAttribute(RequestDispatcher.FORWARD_SERVLET_PATH)); | |
| 1117 r.setAttribute(AsyncContext.ASYNC_PATH_INFO,r.getAttribute(RequestDispatcher.FORWARD_PATH_INFO)); | |
| 1118 r.setAttribute(AsyncContext.ASYNC_QUERY_STRING,r.getAttribute(RequestDispatcher.FORWARD_QUERY_STRING)); | |
| 1119 } | |
| 1120 else | |
| 1121 { | |
| 1122 r.setAttribute(AsyncContext.ASYNC_REQUEST_URI,r.getRequestURI()); | |
| 1123 r.setAttribute(AsyncContext.ASYNC_CONTEXT_PATH,r.getContextPath()); | |
| 1124 r.setAttribute(AsyncContext.ASYNC_SERVLET_PATH,r.getServletPath()); | |
| 1125 r.setAttribute(AsyncContext.ASYNC_PATH_INFO,r.getPathInfo()); | |
| 1126 r.setAttribute(AsyncContext.ASYNC_QUERY_STRING,r.getQueryString()); | |
| 1127 } | |
| 1128 } | |
| 1129 } | |
| 1130 | |
| 1131 public ServletContext getSuspendedContext() | |
| 1132 { | |
| 1133 return _suspendedContext; | |
| 1134 } | |
| 1135 | |
| 1136 public ServletContext getDispatchContext() | |
| 1137 { | |
| 1138 return _dispatchContext; | |
| 1139 } | |
| 1140 | |
| 1141 public ServletContext getServletContext() | |
| 1142 { | |
| 1143 return _dispatchContext==null?_suspendedContext:_dispatchContext; | |
| 1144 } | |
| 1145 | |
| 1146 public void setPath(String path) | |
| 1147 { | |
| 1148 _pathInContext=path; | |
| 1149 } | |
| 1150 | |
| 1151 /* ------------------------------------------------------------ */ | |
| 1152 /** | |
| 1153 * @return The path in the context | |
| 1154 */ | |
| 1155 public String getPath() | |
| 1156 { | |
| 1157 return _pathInContext; | |
| 1158 } | |
| 1159 } | |
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1160 } |