| | | 1 | | // Copyright (c) ZeroC, Inc. |
| | | 2 | | |
| | | 3 | | using System.Diagnostics; |
| | | 4 | | |
| | | 5 | | namespace Ice.Internal; |
| | | 6 | | |
| | | 7 | | public interface OutgoingAsyncCompletionCallback |
| | | 8 | | { |
| | | 9 | | void init(OutgoingAsyncBase og); |
| | | 10 | | |
| | | 11 | | bool handleSent(bool done, bool alreadySent, OutgoingAsyncBase og); |
| | | 12 | | |
| | | 13 | | bool handleException(Ice.Exception ex, OutgoingAsyncBase og); |
| | | 14 | | |
| | | 15 | | bool handleResponse(bool userThread, bool ok, OutgoingAsyncBase og); |
| | | 16 | | |
| | | 17 | | void handleInvokeSent(bool sentSynchronously, bool done, bool alreadySent, OutgoingAsyncBase og); |
| | | 18 | | |
| | | 19 | | void handleInvokeException(Ice.Exception ex, OutgoingAsyncBase og); |
| | | 20 | | |
| | | 21 | | void handleInvokeResponse(bool ok, OutgoingAsyncBase og); |
| | | 22 | | } |
| | | 23 | | |
| | | 24 | | public abstract class OutgoingAsyncBase |
| | | 25 | | { |
| | | 26 | | public virtual bool sent() => sentImpl(true); |
| | | 27 | | |
| | | 28 | | public virtual bool exception(Ice.Exception ex) => exceptionImpl(ex); |
| | | 29 | | |
| | | 30 | | public virtual bool response() |
| | | 31 | | { |
| | | 32 | | Debug.Assert(false); // Must be overridden by request that can handle responses |
| | | 33 | | return false; |
| | | 34 | | } |
| | | 35 | | |
| | | 36 | | public void invokeSentAsync() |
| | | 37 | | { |
| | | 38 | | // |
| | | 39 | | // This is called when it's not safe to call the sent callback |
| | | 40 | | // synchronously from this thread. Instead the exception callback |
| | | 41 | | // is called asynchronously from the client thread pool. |
| | | 42 | | // |
| | | 43 | | try |
| | | 44 | | { |
| | | 45 | | instance_.clientThreadPool().execute(invokeSent, cachedConnection_); |
| | | 46 | | } |
| | | 47 | | catch (Ice.CommunicatorDestroyedException) |
| | | 48 | | { |
| | | 49 | | } |
| | | 50 | | } |
| | | 51 | | |
| | | 52 | | public void invokeExceptionAsync() => |
| | | 53 | | // |
| | | 54 | | // CommunicatorDestroyedCompleted is the only exception that can propagate directly |
| | | 55 | | // from this method. |
| | | 56 | | // |
| | | 57 | | instance_.clientThreadPool().execute(invokeException, cachedConnection_); |
| | | 58 | | |
| | | 59 | | public void invokeResponseAsync() => |
| | | 60 | | // |
| | | 61 | | // CommunicatorDestroyedCompleted is the only exception that can propagate directly |
| | | 62 | | // from this method. |
| | | 63 | | // |
| | | 64 | | instance_.clientThreadPool().execute(invokeResponse, cachedConnection_); |
| | | 65 | | |
| | | 66 | | public void invokeSent() |
| | | 67 | | { |
| | | 68 | | try |
| | | 69 | | { |
| | | 70 | | _completionCallback.handleInvokeSent(sentSynchronously_, _doneInSent, _alreadySent, this); |
| | | 71 | | } |
| | | 72 | | catch (System.Exception ex) |
| | | 73 | | { |
| | | 74 | | warning(ex); |
| | | 75 | | } |
| | | 76 | | |
| | | 77 | | if (observer_ != null && _doneInSent) |
| | | 78 | | { |
| | | 79 | | observer_.detach(); |
| | | 80 | | observer_ = null; |
| | | 81 | | } |
| | | 82 | | } |
| | | 83 | | |
| | | 84 | | public void invokeException() |
| | | 85 | | { |
| | | 86 | | try |
| | | 87 | | { |
| | | 88 | | try |
| | | 89 | | { |
| | | 90 | | throw _ex; |
| | | 91 | | } |
| | | 92 | | catch (Ice.Exception ex) |
| | | 93 | | { |
| | | 94 | | _completionCallback.handleInvokeException(ex, this); |
| | | 95 | | } |
| | | 96 | | } |
| | | 97 | | catch (System.Exception ex) |
| | | 98 | | { |
| | | 99 | | warning(ex); |
| | | 100 | | } |
| | | 101 | | |
| | | 102 | | observer_?.detach(); |
| | | 103 | | observer_ = null; |
| | | 104 | | } |
| | | 105 | | |
| | | 106 | | public void invokeResponse() |
| | | 107 | | { |
| | | 108 | | if (_ex != null) |
| | | 109 | | { |
| | | 110 | | invokeException(); |
| | | 111 | | return; |
| | | 112 | | } |
| | | 113 | | |
| | | 114 | | try |
| | | 115 | | { |
| | | 116 | | try |
| | | 117 | | { |
| | | 118 | | _completionCallback.handleInvokeResponse((state_ & StateOK) != 0, this); |
| | | 119 | | } |
| | | 120 | | catch (Ice.Exception ex) |
| | | 121 | | { |
| | | 122 | | if (_completionCallback.handleException(ex, this)) |
| | | 123 | | { |
| | | 124 | | _completionCallback.handleInvokeException(ex, this); |
| | | 125 | | } |
| | | 126 | | } |
| | | 127 | | catch (System.AggregateException ex) |
| | | 128 | | { |
| | | 129 | | throw ex.InnerException; |
| | | 130 | | } |
| | | 131 | | } |
| | | 132 | | catch (System.Exception ex) |
| | | 133 | | { |
| | | 134 | | warning(ex); |
| | | 135 | | } |
| | | 136 | | |
| | | 137 | | observer_?.detach(); |
| | | 138 | | observer_ = null; |
| | | 139 | | } |
| | | 140 | | |
| | | 141 | | public virtual void cancelable(CancellationHandler handler) |
| | | 142 | | { |
| | | 143 | | lock (mutex_) |
| | | 144 | | { |
| | | 145 | | if (_cancellationException != null) |
| | | 146 | | { |
| | | 147 | | try |
| | | 148 | | { |
| | | 149 | | throw _cancellationException; |
| | | 150 | | } |
| | | 151 | | catch (Ice.LocalException) |
| | | 152 | | { |
| | | 153 | | _cancellationException = null; |
| | | 154 | | throw; |
| | | 155 | | } |
| | | 156 | | } |
| | | 157 | | _cancellationHandler = handler; |
| | | 158 | | } |
| | | 159 | | } |
| | | 160 | | |
| | | 161 | | public void cancel() => cancel(new Ice.InvocationCanceledException()); |
| | | 162 | | |
| | | 163 | | public void attachRemoteObserver(Ice.ConnectionInfo info, Ice.Endpoint endpt, int requestId) |
| | | 164 | | { |
| | | 165 | | Ice.Instrumentation.InvocationObserver observer = getObserver(); |
| | | 166 | | if (observer != null) |
| | | 167 | | { |
| | | 168 | | int size = os_.size() - Protocol.headerSize - 4; |
| | | 169 | | childObserver_ = observer.getRemoteObserver(info, endpt, requestId, size); |
| | | 170 | | childObserver_?.attach(); |
| | | 171 | | } |
| | | 172 | | } |
| | | 173 | | |
| | | 174 | | public void attachCollocatedObserver(Ice.ObjectAdapter adapter, int requestId) |
| | | 175 | | { |
| | | 176 | | Ice.Instrumentation.InvocationObserver observer = getObserver(); |
| | | 177 | | if (observer != null) |
| | | 178 | | { |
| | | 179 | | int size = os_.size() - Protocol.headerSize - 4; |
| | | 180 | | childObserver_ = observer.getCollocatedObserver(adapter, requestId, size); |
| | | 181 | | childObserver_?.attach(); |
| | | 182 | | } |
| | | 183 | | } |
| | | 184 | | |
| | | 185 | | public Ice.OutputStream getOs() => os_; |
| | | 186 | | |
| | | 187 | | public Ice.InputStream getIs() => is_; |
| | | 188 | | |
| | | 189 | | public virtual void throwUserException() |
| | | 190 | | { |
| | | 191 | | } |
| | | 192 | | |
| | | 193 | | public virtual void cacheMessageBuffers() |
| | | 194 | | { |
| | | 195 | | } |
| | | 196 | | |
| | | 197 | | public bool isSynchronous() => synchronous_; |
| | | 198 | | |
| | | 199 | | protected OutgoingAsyncBase( |
| | | 200 | | Instance instance, |
| | | 201 | | OutgoingAsyncCompletionCallback completionCallback, |
| | | 202 | | Ice.OutputStream os = null, |
| | | 203 | | Ice.InputStream iss = null) |
| | | 204 | | { |
| | | 205 | | instance_ = instance; |
| | | 206 | | sentSynchronously_ = false; |
| | | 207 | | synchronous_ = false; |
| | | 208 | | _doneInSent = false; |
| | | 209 | | _alreadySent = false; |
| | | 210 | | state_ = 0; |
| | | 211 | | os_ = os ?? new OutputStream(Protocol.currentProtocolEncoding, instance.defaultsAndOverrides().defaultFormat); |
| | | 212 | | is_ = iss ?? new Ice.InputStream(instance, Protocol.currentProtocolEncoding); |
| | | 213 | | _completionCallback = completionCallback; |
| | | 214 | | _completionCallback?.init(this); |
| | | 215 | | } |
| | | 216 | | |
| | | 217 | | protected virtual bool sentImpl(bool done) |
| | | 218 | | { |
| | | 219 | | lock (mutex_) |
| | | 220 | | { |
| | | 221 | | _alreadySent = (state_ & StateSent) > 0; |
| | | 222 | | state_ |= StateSent; |
| | | 223 | | if (done) |
| | | 224 | | { |
| | | 225 | | _doneInSent = true; |
| | | 226 | | childObserver_?.detach(); |
| | | 227 | | childObserver_ = null; |
| | | 228 | | _cancellationHandler = null; |
| | | 229 | | |
| | | 230 | | // |
| | | 231 | | // For oneway requests after the data has been sent |
| | | 232 | | // the buffers can be reused unless this is a |
| | | 233 | | // collocated invocation. For collocated invocations |
| | | 234 | | // the buffer won't be reused because it has already |
| | | 235 | | // been marked as cached in invokeCollocated. |
| | | 236 | | // |
| | | 237 | | cacheMessageBuffers(); |
| | | 238 | | } |
| | | 239 | | |
| | | 240 | | bool invoke = _completionCallback.handleSent(done, _alreadySent, this); |
| | | 241 | | if (!invoke && _doneInSent && observer_ != null) |
| | | 242 | | { |
| | | 243 | | observer_.detach(); |
| | | 244 | | observer_ = null; |
| | | 245 | | } |
| | | 246 | | return invoke; |
| | | 247 | | } |
| | | 248 | | } |
| | | 249 | | |
| | | 250 | | protected virtual bool exceptionImpl(Ice.Exception ex) |
| | | 251 | | { |
| | | 252 | | lock (mutex_) |
| | | 253 | | { |
| | | 254 | | _ex = ex; |
| | | 255 | | if (childObserver_ != null) |
| | | 256 | | { |
| | | 257 | | childObserver_.failed(ex.ice_id()); |
| | | 258 | | childObserver_.detach(); |
| | | 259 | | childObserver_ = null; |
| | | 260 | | } |
| | | 261 | | _cancellationHandler = null; |
| | | 262 | | |
| | | 263 | | observer_?.failed(ex.ice_id()); |
| | | 264 | | bool invoke = _completionCallback.handleException(ex, this); |
| | | 265 | | if (!invoke && observer_ != null) |
| | | 266 | | { |
| | | 267 | | observer_.detach(); |
| | | 268 | | observer_ = null; |
| | | 269 | | } |
| | | 270 | | return invoke; |
| | | 271 | | } |
| | | 272 | | } |
| | | 273 | | |
| | | 274 | | protected virtual bool responseImpl(bool userThread, bool ok, bool invoke) |
| | | 275 | | { |
| | | 276 | | lock (mutex_) |
| | | 277 | | { |
| | | 278 | | if (ok) |
| | | 279 | | { |
| | | 280 | | state_ |= StateOK; |
| | | 281 | | } |
| | | 282 | | |
| | | 283 | | _cancellationHandler = null; |
| | | 284 | | |
| | | 285 | | try |
| | | 286 | | { |
| | | 287 | | invoke &= _completionCallback.handleResponse(userThread, ok, this); |
| | | 288 | | } |
| | | 289 | | catch (Ice.Exception ex) |
| | | 290 | | { |
| | | 291 | | _ex = ex; |
| | | 292 | | invoke = _completionCallback.handleException(ex, this); |
| | | 293 | | } |
| | | 294 | | if (!invoke && observer_ != null) |
| | | 295 | | { |
| | | 296 | | observer_.detach(); |
| | | 297 | | observer_ = null; |
| | | 298 | | } |
| | | 299 | | return invoke; |
| | | 300 | | } |
| | | 301 | | } |
| | | 302 | | |
| | | 303 | | protected void cancel(Ice.LocalException ex) |
| | | 304 | | { |
| | | 305 | | CancellationHandler handler; |
| | | 306 | | { |
| | | 307 | | lock (mutex_) |
| | | 308 | | { |
| | | 309 | | if (_cancellationHandler == null) |
| | | 310 | | { |
| | | 311 | | _cancellationException = ex; |
| | | 312 | | return; |
| | | 313 | | } |
| | | 314 | | handler = _cancellationHandler; |
| | | 315 | | } |
| | | 316 | | } |
| | | 317 | | handler.asyncRequestCanceled(this, ex); |
| | | 318 | | } |
| | | 319 | | |
| | | 320 | | private void warning(System.Exception ex) |
| | | 321 | | { |
| | | 322 | | if (instance_.initializationData().properties.getIcePropertyAsInt("Ice.Warn.AMICallback") > 0) |
| | | 323 | | { |
| | | 324 | | instance_.initializationData().logger.warning("exception raised by AMI callback:\n" + ex); |
| | | 325 | | } |
| | | 326 | | } |
| | | 327 | | |
| | | 328 | | // |
| | | 329 | | // This virtual method is necessary for the communicator flush |
| | | 330 | | // batch requests implementation. |
| | | 331 | | // |
| | | 332 | | protected virtual Ice.Instrumentation.InvocationObserver getObserver() => observer_; |
| | | 333 | | |
| | | 334 | | public bool sentSynchronously() => sentSynchronously_; |
| | | 335 | | |
| | | 336 | | protected Instance instance_; |
| | | 337 | | protected Ice.Connection cachedConnection_; |
| | | 338 | | protected bool sentSynchronously_; |
| | | 339 | | protected bool synchronous_; |
| | | 340 | | protected int state_; |
| | | 341 | | |
| | | 342 | | protected Ice.Instrumentation.InvocationObserver observer_; |
| | | 343 | | protected Ice.Instrumentation.ChildInvocationObserver childObserver_; |
| | | 344 | | |
| | | 345 | | protected Ice.OutputStream os_; |
| | | 346 | | protected Ice.InputStream is_; |
| | | 347 | | |
| | | 348 | | protected readonly object mutex_ = new(); |
| | | 349 | | |
| | | 350 | | private bool _doneInSent; |
| | | 351 | | private bool _alreadySent; |
| | | 352 | | private Ice.Exception _ex; |
| | | 353 | | private Ice.LocalException _cancellationException; |
| | | 354 | | private CancellationHandler _cancellationHandler; |
| | | 355 | | private readonly OutgoingAsyncCompletionCallback _completionCallback; |
| | | 356 | | |
| | | 357 | | protected const int StateOK = 0x1; |
| | | 358 | | protected const int StateDone = 0x2; |
| | | 359 | | protected const int StateSent = 0x4; |
| | | 360 | | protected const int StateEndCalled = 0x8; |
| | | 361 | | protected const int StateCachedBuffers = 0x10; |
| | | 362 | | |
| | | 363 | | public const int AsyncStatusQueued = 0; |
| | | 364 | | public const int AsyncStatusSent = 1; |
| | | 365 | | public const int AsyncStatusInvokeSentCallback = 2; |
| | | 366 | | } |
| | | 367 | | |
| | | 368 | | // |
| | | 369 | | // Base class for proxy based invocations. This class handles the |
| | | 370 | | // retry for proxy invocations. It also ensures the child observer is |
| | | 371 | | // correct notified of failures and make sure the retry task is |
| | | 372 | | // correctly canceled when the invocation completes. |
| | | 373 | | // |
| | | 374 | | public abstract class ProxyOutgoingAsyncBase : OutgoingAsyncBase, TimerTask |
| | | 375 | | { |
| | | 376 | | public abstract int invokeRemote(Ice.ConnectionI connection, bool compress, bool response); |
| | | 377 | | |
| | | 378 | | public abstract int invokeCollocated(CollocatedRequestHandler handler); |
| | | 379 | | |
| | | 380 | | public override bool exception(Ice.Exception ex) |
| | | 381 | | { |
| | 1 | 382 | | if (childObserver_ != null) |
| | | 383 | | { |
| | 1 | 384 | | childObserver_.failed(ex.ice_id()); |
| | 1 | 385 | | childObserver_.detach(); |
| | 1 | 386 | | childObserver_ = null; |
| | | 387 | | } |
| | | 388 | | |
| | 1 | 389 | | cachedConnection_ = null; |
| | | 390 | | |
| | | 391 | | // |
| | | 392 | | // NOTE: at this point, synchronization isn't needed, no other threads should be |
| | | 393 | | // calling on the callback. |
| | | 394 | | // |
| | | 395 | | try |
| | | 396 | | { |
| | | 397 | | // |
| | | 398 | | // It's important to let the retry queue do the retry even if |
| | | 399 | | // the retry interval is 0. This method can be called with the |
| | | 400 | | // connection locked so we can't just retry here. |
| | | 401 | | // |
| | 1 | 402 | | instance_.retryQueue().add(this, handleRetryAfterException(ex)); |
| | 1 | 403 | | return false; |
| | | 404 | | } |
| | 1 | 405 | | catch (Ice.Exception retryEx) |
| | | 406 | | { |
| | 1 | 407 | | return exceptionImpl(retryEx); // No retries, we're done |
| | | 408 | | } |
| | 1 | 409 | | } |
| | | 410 | | |
| | | 411 | | public void retryException() |
| | | 412 | | { |
| | | 413 | | try |
| | | 414 | | { |
| | | 415 | | // It's important to let the retry queue do the retry. This is |
| | | 416 | | // called from the connect request handler and the retry might |
| | | 417 | | // require could end up waiting for the flush of the |
| | | 418 | | // connection to be done. |
| | | 419 | | |
| | 0 | 420 | | proxy_.iceGetRequestHandlerCache().clearCachedRequestHandler(handler_); |
| | 0 | 421 | | instance_.retryQueue().add(this, 0); |
| | 0 | 422 | | } |
| | 0 | 423 | | catch (Ice.Exception ex) |
| | | 424 | | { |
| | 0 | 425 | | if (exception(ex)) |
| | | 426 | | { |
| | 0 | 427 | | invokeExceptionAsync(); |
| | | 428 | | } |
| | 0 | 429 | | } |
| | 0 | 430 | | } |
| | | 431 | | |
| | 1 | 432 | | public void retry() => invokeImpl(false); |
| | | 433 | | |
| | | 434 | | public void abort(Ice.Exception ex) |
| | | 435 | | { |
| | | 436 | | Debug.Assert(childObserver_ == null); |
| | 1 | 437 | | if (exceptionImpl(ex)) |
| | | 438 | | { |
| | 1 | 439 | | invokeExceptionAsync(); |
| | | 440 | | } |
| | 1 | 441 | | else if (ex is Ice.CommunicatorDestroyedException) |
| | | 442 | | { |
| | | 443 | | // |
| | | 444 | | // If it's a communicator destroyed exception, swallow |
| | | 445 | | // it but instead notify the user thread. Even if no callback |
| | | 446 | | // was provided. |
| | | 447 | | // |
| | 0 | 448 | | throw ex; |
| | | 449 | | } |
| | 1 | 450 | | } |
| | | 451 | | |
| | | 452 | | protected ProxyOutgoingAsyncBase( |
| | | 453 | | Ice.ObjectPrxHelperBase prx, |
| | | 454 | | OutgoingAsyncCompletionCallback completionCallback, |
| | | 455 | | Ice.OutputStream os = null, |
| | | 456 | | Ice.InputStream iss = null) |
| | 1 | 457 | | : base(prx.iceReference().getInstance(), completionCallback, os, iss) |
| | | 458 | | { |
| | 1 | 459 | | proxy_ = prx; |
| | 1 | 460 | | mode_ = Ice.OperationMode.Normal; |
| | 1 | 461 | | _cnt = 0; |
| | 1 | 462 | | _sent = false; |
| | 1 | 463 | | } |
| | | 464 | | |
| | | 465 | | protected void invokeImpl(bool userThread) |
| | | 466 | | { |
| | | 467 | | try |
| | | 468 | | { |
| | 1 | 469 | | if (userThread) |
| | | 470 | | { |
| | 1 | 471 | | TimeSpan invocationTimeout = proxy_.iceReference().getInvocationTimeout(); |
| | 1 | 472 | | if (invocationTimeout > TimeSpan.Zero) |
| | | 473 | | { |
| | 1 | 474 | | instance_.timer().schedule(this, (long)invocationTimeout.TotalMilliseconds); |
| | | 475 | | } |
| | | 476 | | } |
| | | 477 | | else |
| | | 478 | | { |
| | 1 | 479 | | observer_?.retried(); |
| | | 480 | | } |
| | | 481 | | |
| | | 482 | | while (true) |
| | | 483 | | { |
| | | 484 | | try |
| | | 485 | | { |
| | 1 | 486 | | _sent = false; |
| | 1 | 487 | | handler_ = proxy_.iceGetRequestHandlerCache().requestHandler; |
| | 1 | 488 | | int status = handler_.sendAsyncRequest(this); |
| | 1 | 489 | | if ((status & AsyncStatusSent) != 0) |
| | | 490 | | { |
| | 1 | 491 | | if (userThread) |
| | | 492 | | { |
| | 1 | 493 | | sentSynchronously_ = true; |
| | 1 | 494 | | if ((status & AsyncStatusInvokeSentCallback) != 0) |
| | | 495 | | { |
| | 1 | 496 | | invokeSent(); // Call the sent callback from the user thread. |
| | | 497 | | } |
| | | 498 | | } |
| | | 499 | | else |
| | | 500 | | { |
| | 1 | 501 | | if ((status & AsyncStatusInvokeSentCallback) != 0) |
| | | 502 | | { |
| | 0 | 503 | | invokeSentAsync(); // Call the sent callback from a client thread pool thread. |
| | | 504 | | } |
| | | 505 | | } |
| | | 506 | | } |
| | 1 | 507 | | return; // We're done! |
| | | 508 | | } |
| | 1 | 509 | | catch (RetryException) |
| | | 510 | | { |
| | | 511 | | // Clear request handler and always retry. |
| | 1 | 512 | | proxy_.iceGetRequestHandlerCache().clearCachedRequestHandler(handler_); |
| | 1 | 513 | | } |
| | 1 | 514 | | catch (Ice.Exception ex) |
| | | 515 | | { |
| | 1 | 516 | | if (childObserver_ != null) |
| | | 517 | | { |
| | 0 | 518 | | childObserver_.failed(ex.ice_id()); |
| | 0 | 519 | | childObserver_.detach(); |
| | 0 | 520 | | childObserver_ = null; |
| | | 521 | | } |
| | 1 | 522 | | int interval = handleRetryAfterException(ex); |
| | 1 | 523 | | if (interval > 0) |
| | | 524 | | { |
| | 0 | 525 | | instance_.retryQueue().add(this, interval); |
| | 0 | 526 | | return; |
| | | 527 | | } |
| | | 528 | | else |
| | | 529 | | { |
| | 1 | 530 | | observer_?.retried(); |
| | | 531 | | } |
| | 1 | 532 | | } |
| | | 533 | | } |
| | | 534 | | } |
| | 1 | 535 | | catch (Ice.Exception ex) |
| | | 536 | | { |
| | | 537 | | // If called from the user thread we re-throw, the exception will caught by the caller and handled using |
| | | 538 | | // abort. |
| | 1 | 539 | | if (userThread) |
| | | 540 | | { |
| | 1 | 541 | | throw; |
| | | 542 | | } |
| | 1 | 543 | | else if (exceptionImpl(ex)) // No retries, we're done |
| | | 544 | | { |
| | 0 | 545 | | invokeExceptionAsync(); |
| | | 546 | | } |
| | 1 | 547 | | } |
| | 1 | 548 | | } |
| | | 549 | | |
| | | 550 | | protected override bool sentImpl(bool done) |
| | | 551 | | { |
| | 1 | 552 | | _sent = true; |
| | 1 | 553 | | if (done) |
| | | 554 | | { |
| | 1 | 555 | | if (proxy_.iceReference().getInvocationTimeout() > TimeSpan.Zero) |
| | | 556 | | { |
| | 0 | 557 | | instance_.timer().cancel(this); |
| | | 558 | | } |
| | | 559 | | } |
| | 1 | 560 | | return base.sentImpl(done); |
| | | 561 | | } |
| | | 562 | | |
| | | 563 | | protected override bool exceptionImpl(Ice.Exception ex) |
| | | 564 | | { |
| | 1 | 565 | | if (proxy_.iceReference().getInvocationTimeout() > TimeSpan.Zero) |
| | | 566 | | { |
| | 1 | 567 | | instance_.timer().cancel(this); |
| | | 568 | | } |
| | 1 | 569 | | return base.exceptionImpl(ex); |
| | | 570 | | } |
| | | 571 | | |
| | | 572 | | protected override bool responseImpl(bool userThread, bool ok, bool invoke) |
| | | 573 | | { |
| | 1 | 574 | | if (proxy_.iceReference().getInvocationTimeout() > TimeSpan.Zero) |
| | | 575 | | { |
| | 1 | 576 | | instance_.timer().cancel(this); |
| | | 577 | | } |
| | 1 | 578 | | return base.responseImpl(userThread, ok, invoke); |
| | | 579 | | } |
| | | 580 | | |
| | 1 | 581 | | public void runTimerTask() => cancel(new Ice.InvocationTimeoutException()); |
| | | 582 | | |
| | | 583 | | private int handleRetryAfterException(Ice.Exception ex) |
| | | 584 | | { |
| | | 585 | | // Clear the request handler |
| | 1 | 586 | | proxy_.iceGetRequestHandlerCache().clearCachedRequestHandler(handler_); |
| | | 587 | | |
| | | 588 | | // We only retry local exception. |
| | | 589 | | // |
| | | 590 | | // A CloseConnectionException indicates graceful server shutdown, and is therefore |
| | | 591 | | // always repeatable without violating "at-most-once". That's because by sending a |
| | | 592 | | // close connection message, the server guarantees that all outstanding requests |
| | | 593 | | // can safely be repeated. |
| | | 594 | | // |
| | | 595 | | // An ObjectNotExistException can always be retried as well without violating |
| | | 596 | | // "at-most-once" (see the implementation of the checkRetryAfterException method |
| | | 597 | | // below for the reasons why it can be useful). |
| | | 598 | | // |
| | | 599 | | // If the request didn't get sent or if it's non-mutating or idempotent it can |
| | | 600 | | // also always be retried if the retry count isn't reached. |
| | 1 | 601 | | bool shouldRetry = ex is LocalException && (!_sent || |
| | 1 | 602 | | mode_ is not OperationMode.Normal || |
| | 1 | 603 | | ex is CloseConnectionException || |
| | 1 | 604 | | ex is ObjectNotExistException); |
| | | 605 | | |
| | 1 | 606 | | if (shouldRetry) |
| | | 607 | | { |
| | | 608 | | try |
| | | 609 | | { |
| | 1 | 610 | | return checkRetryAfterException((LocalException)ex); |
| | | 611 | | } |
| | 1 | 612 | | catch (CommunicatorDestroyedException) |
| | | 613 | | { |
| | 1 | 614 | | throw ex; // The communicator is already destroyed, so we cannot retry. |
| | | 615 | | } |
| | | 616 | | } |
| | | 617 | | else |
| | | 618 | | { |
| | 1 | 619 | | throw ex; // Retry could break at-most-once semantics, don't retry. |
| | | 620 | | } |
| | 1 | 621 | | } |
| | | 622 | | |
| | | 623 | | private int checkRetryAfterException(Ice.LocalException ex) |
| | | 624 | | { |
| | 1 | 625 | | Reference @ref = proxy_.iceReference(); |
| | 1 | 626 | | Instance instance = @ref.getInstance(); |
| | | 627 | | |
| | 1 | 628 | | TraceLevels traceLevels = instance.traceLevels(); |
| | 1 | 629 | | Ice.Logger logger = instance.initializationData().logger!; |
| | | 630 | | |
| | | 631 | | // We don't retry batch requests because the exception might have caused |
| | | 632 | | // the all the requests batched with the connection to be aborted and we |
| | | 633 | | // want the application to be notified. |
| | 1 | 634 | | if (@ref.getMode() == Reference.Mode.ModeBatchOneway || @ref.getMode() == Reference.Mode.ModeBatchDatagram) |
| | | 635 | | { |
| | 1 | 636 | | throw ex; |
| | | 637 | | } |
| | | 638 | | |
| | | 639 | | // If it's a fixed proxy, retrying isn't useful as the proxy is tied to |
| | | 640 | | // the connection and the request will fail with the exception. |
| | 1 | 641 | | if (@ref is FixedReference) |
| | | 642 | | { |
| | 1 | 643 | | throw ex; |
| | | 644 | | } |
| | | 645 | | |
| | 1 | 646 | | var one = ex as Ice.ObjectNotExistException; |
| | 1 | 647 | | if (one is not null) |
| | | 648 | | { |
| | 1 | 649 | | if (@ref.getRouterInfo() != null && one.operation == "ice_add_proxy") |
| | | 650 | | { |
| | | 651 | | // If we have a router, an ObjectNotExistException with an |
| | | 652 | | // operation name "ice_add_proxy" indicates to the client |
| | | 653 | | // that the router isn't aware of the proxy (for example, |
| | | 654 | | // because it was evicted by the router). In this case, we |
| | | 655 | | // must *always* retry, so that the missing proxy is added |
| | | 656 | | // to the router. |
| | | 657 | | |
| | 0 | 658 | | @ref.getRouterInfo().clearCache(@ref); |
| | | 659 | | |
| | 0 | 660 | | if (traceLevels.retry >= 1) |
| | | 661 | | { |
| | 0 | 662 | | string s = "retrying operation call to add proxy to router\n" + ex; |
| | 0 | 663 | | logger.trace(traceLevels.retryCat, s); |
| | | 664 | | } |
| | 0 | 665 | | return 0; // We must always retry, so we don't look at the retry count. |
| | | 666 | | } |
| | 1 | 667 | | else if (@ref.isIndirect()) |
| | | 668 | | { |
| | | 669 | | // We retry ObjectNotExistException if the reference is indirect. |
| | | 670 | | |
| | 1 | 671 | | if (@ref.isWellKnown()) |
| | | 672 | | { |
| | 1 | 673 | | LocatorInfo li = @ref.getLocatorInfo(); |
| | 1 | 674 | | li?.clearCache(@ref); |
| | | 675 | | } |
| | | 676 | | } |
| | | 677 | | else |
| | | 678 | | { |
| | | 679 | | // For all other cases, we don't retry ObjectNotExistException. |
| | 1 | 680 | | throw ex; |
| | | 681 | | } |
| | | 682 | | } |
| | 1 | 683 | | else if (ex is Ice.RequestFailedException) |
| | | 684 | | { |
| | 1 | 685 | | throw ex; |
| | | 686 | | } |
| | | 687 | | |
| | | 688 | | // There is no point in retrying an operation that resulted in a |
| | | 689 | | // MarshalException. This must have been raised locally (because if |
| | | 690 | | // it happened in a server it would result in an UnknownLocalException |
| | | 691 | | // instead), which means there was a problem in this process that will |
| | | 692 | | // not change if we try again. |
| | | 693 | | // |
| | | 694 | | // A likely cause for a MarshalException is exceeding the |
| | | 695 | | // maximum message size. For example, a client can attempt to send a |
| | | 696 | | // message that exceeds the maximum memory size, or accumulate enough |
| | | 697 | | // batch requests without flushing that the maximum size is reached. |
| | | 698 | | // |
| | | 699 | | // This latter case is especially problematic, because if we were to |
| | | 700 | | // retry a batch request after a MarshalException, we would in fact |
| | | 701 | | // silently discard the accumulated requests and allow new batch |
| | | 702 | | // requests to accumulate. If the subsequent batched requests do not |
| | | 703 | | // exceed the maximum message size, it appears to the client that all |
| | | 704 | | // of the batched requests were accepted, when in reality only the |
| | | 705 | | // last few are actually sent. |
| | 1 | 706 | | if (ex is Ice.MarshalException) |
| | | 707 | | { |
| | 0 | 708 | | throw ex; |
| | | 709 | | } |
| | | 710 | | |
| | | 711 | | // Don't retry if the communicator is destroyed, object adapter is deactivated, |
| | | 712 | | // or connection is closed by the application. |
| | 1 | 713 | | if (ex is CommunicatorDestroyedException || |
| | 1 | 714 | | ex is ObjectAdapterDeactivatedException || |
| | 1 | 715 | | ex is ObjectAdapterDestroyedException || |
| | 1 | 716 | | (ex is ConnectionAbortedException connectionAbortedException && |
| | 1 | 717 | | connectionAbortedException.closedByApplication) || |
| | 1 | 718 | | (ex is ConnectionClosedException connectionClosedException && |
| | 1 | 719 | | connectionClosedException.closedByApplication)) |
| | | 720 | | { |
| | 1 | 721 | | throw ex; |
| | | 722 | | } |
| | | 723 | | |
| | | 724 | | // Don't retry invocation timeouts. |
| | 1 | 725 | | if (ex is Ice.InvocationTimeoutException || ex is Ice.InvocationCanceledException) |
| | | 726 | | { |
| | 1 | 727 | | throw ex; |
| | | 728 | | } |
| | | 729 | | |
| | 1 | 730 | | ++_cnt; |
| | | 731 | | Debug.Assert(_cnt > 0); |
| | | 732 | | |
| | 1 | 733 | | int[] retryIntervals = instance.retryIntervals; |
| | | 734 | | |
| | | 735 | | int interval; |
| | 1 | 736 | | if (_cnt == (retryIntervals.Length + 1) && ex is Ice.CloseConnectionException) |
| | | 737 | | { |
| | | 738 | | // A close connection exception is always retried at least once, even if the retry |
| | | 739 | | // limit is reached. |
| | 0 | 740 | | interval = 0; |
| | | 741 | | } |
| | 1 | 742 | | else if (_cnt > retryIntervals.Length) |
| | | 743 | | { |
| | 1 | 744 | | if (traceLevels.retry >= 1) |
| | | 745 | | { |
| | 1 | 746 | | string s = "cannot retry operation call because retry limit has been exceeded\n" + ex; |
| | 1 | 747 | | logger.trace(traceLevels.retryCat, s); |
| | | 748 | | } |
| | 1 | 749 | | throw ex; |
| | | 750 | | } |
| | | 751 | | else |
| | | 752 | | { |
| | 1 | 753 | | interval = retryIntervals[_cnt - 1]; |
| | | 754 | | } |
| | | 755 | | |
| | 1 | 756 | | if (traceLevels.retry >= 1) |
| | | 757 | | { |
| | 1 | 758 | | string s = "retrying operation call"; |
| | 1 | 759 | | if (interval > 0) |
| | | 760 | | { |
| | 1 | 761 | | s += " in " + interval + "ms"; |
| | | 762 | | } |
| | 1 | 763 | | s += " because of exception\n" + ex; |
| | 1 | 764 | | logger.trace(traceLevels.retryCat, s); |
| | | 765 | | } |
| | | 766 | | |
| | 1 | 767 | | return interval; |
| | | 768 | | } |
| | | 769 | | |
| | | 770 | | protected readonly Ice.ObjectPrxHelperBase proxy_; |
| | | 771 | | protected RequestHandler handler_; |
| | | 772 | | protected Ice.OperationMode mode_; |
| | | 773 | | |
| | | 774 | | private int _cnt; |
| | | 775 | | private bool _sent; |
| | | 776 | | } |
| | | 777 | | |
| | | 778 | | // |
| | | 779 | | // Class for handling Slice operation invocations |
| | | 780 | | // |
| | | 781 | | public class OutgoingAsync : ProxyOutgoingAsyncBase |
| | | 782 | | { |
| | | 783 | | public OutgoingAsync( |
| | | 784 | | Ice.ObjectPrxHelperBase prx, |
| | | 785 | | OutgoingAsyncCompletionCallback completionCallback, |
| | | 786 | | Ice.OutputStream os = null, |
| | | 787 | | Ice.InputStream iss = null) |
| | | 788 | | : base(prx, completionCallback, os, iss) |
| | | 789 | | { |
| | | 790 | | encoding_ = proxy_.iceReference().getEncoding(); |
| | | 791 | | synchronous_ = false; |
| | | 792 | | } |
| | | 793 | | |
| | | 794 | | public void prepare(string operation, Ice.OperationMode mode, Dictionary<string, string> context) |
| | | 795 | | { |
| | | 796 | | if (proxy_.iceReference().getProtocol() != Protocol.currentProtocol) |
| | | 797 | | { |
| | | 798 | | throw new FeatureNotSupportedException( |
| | | 799 | | $"Cannot send request using protocol version {proxy_.iceReference().getProtocol()}."); |
| | | 800 | | } |
| | | 801 | | |
| | | 802 | | mode_ = mode; |
| | | 803 | | |
| | | 804 | | observer_ = ObserverHelper.get(proxy_, operation, context); |
| | | 805 | | |
| | | 806 | | if (proxy_.iceReference().isBatch) |
| | | 807 | | { |
| | | 808 | | proxy_.iceReference().batchRequestQueue.prepareBatchRequest(os_); |
| | | 809 | | } |
| | | 810 | | else |
| | | 811 | | { |
| | | 812 | | os_.writeBlob(Protocol.requestHdr); |
| | | 813 | | } |
| | | 814 | | |
| | | 815 | | Reference rf = proxy_.iceReference(); |
| | | 816 | | |
| | | 817 | | Identity.ice_write(os_, rf.getIdentity()); |
| | | 818 | | |
| | | 819 | | // |
| | | 820 | | // For compatibility with the old FacetPath. |
| | | 821 | | // |
| | | 822 | | string facet = rf.getFacet(); |
| | | 823 | | if (facet == null || facet.Length == 0) |
| | | 824 | | { |
| | | 825 | | os_.writeStringSeq(null); |
| | | 826 | | } |
| | | 827 | | else |
| | | 828 | | { |
| | | 829 | | string[] facetPath = { facet }; |
| | | 830 | | os_.writeStringSeq(facetPath); |
| | | 831 | | } |
| | | 832 | | |
| | | 833 | | os_.writeString(operation); |
| | | 834 | | |
| | | 835 | | os_.writeByte((byte)mode); |
| | | 836 | | |
| | | 837 | | if (context != null) |
| | | 838 | | { |
| | | 839 | | // |
| | | 840 | | // Explicit context |
| | | 841 | | // |
| | | 842 | | Ice.ContextHelper.write(os_, context); |
| | | 843 | | } |
| | | 844 | | else |
| | | 845 | | { |
| | | 846 | | // |
| | | 847 | | // Implicit context |
| | | 848 | | // |
| | | 849 | | Ice.ImplicitContextI implicitContext = rf.getInstance().getImplicitContext(); |
| | | 850 | | Dictionary<string, string> prxContext = rf.getContext(); |
| | | 851 | | |
| | | 852 | | if (implicitContext == null) |
| | | 853 | | { |
| | | 854 | | Ice.ContextHelper.write(os_, prxContext); |
| | | 855 | | } |
| | | 856 | | else |
| | | 857 | | { |
| | | 858 | | implicitContext.write(prxContext, os_); |
| | | 859 | | } |
| | | 860 | | } |
| | | 861 | | } |
| | | 862 | | |
| | | 863 | | public override bool sent() => sentImpl(!proxy_.ice_isTwoway()); // done = true if it's not a two-way proxy |
| | | 864 | | |
| | | 865 | | public override bool response() |
| | | 866 | | { |
| | | 867 | | // |
| | | 868 | | // NOTE: this method is called from ConnectionI.parseMessage |
| | | 869 | | // with the connection locked. Therefore, it must not invoke |
| | | 870 | | // any user callbacks. |
| | | 871 | | // |
| | | 872 | | Debug.Assert(proxy_.ice_isTwoway()); // Can only be called for twoways. |
| | | 873 | | |
| | | 874 | | if (childObserver_ != null) |
| | | 875 | | { |
| | | 876 | | childObserver_.reply(is_.size() - Protocol.headerSize - 4); |
| | | 877 | | childObserver_.detach(); |
| | | 878 | | childObserver_ = null; |
| | | 879 | | } |
| | | 880 | | |
| | | 881 | | try |
| | | 882 | | { |
| | | 883 | | // We can't (shouldn't) use the generated code to unmarshal a possibly unknown reply status. |
| | | 884 | | var replyStatus = (ReplyStatus)is_.readByte(); |
| | | 885 | | |
| | | 886 | | switch (replyStatus) |
| | | 887 | | { |
| | | 888 | | case ReplyStatus.Ok: |
| | | 889 | | break; |
| | | 890 | | |
| | | 891 | | case ReplyStatus.UserException: |
| | | 892 | | observer_?.userException(); |
| | | 893 | | break; |
| | | 894 | | |
| | | 895 | | case ReplyStatus.ObjectNotExist: |
| | | 896 | | case ReplyStatus.FacetNotExist: |
| | | 897 | | case ReplyStatus.OperationNotExist: |
| | | 898 | | { |
| | | 899 | | var ident = new Ice.Identity(is_); |
| | | 900 | | |
| | | 901 | | // |
| | | 902 | | // For compatibility with the old FacetPath. |
| | | 903 | | // |
| | | 904 | | string[] facetPath = is_.readStringSeq(); |
| | | 905 | | string facet; |
| | | 906 | | if (facetPath.Length > 0) |
| | | 907 | | { |
| | | 908 | | if (facetPath.Length > 1) |
| | | 909 | | { |
| | | 910 | | throw new MarshalException( |
| | | 911 | | $"Received invalid facet path with {facetPath.Length} elements."); |
| | | 912 | | } |
| | | 913 | | facet = facetPath[0]; |
| | | 914 | | } |
| | | 915 | | else |
| | | 916 | | { |
| | | 917 | | facet = ""; |
| | | 918 | | } |
| | | 919 | | |
| | | 920 | | string operation = is_.readString(); |
| | | 921 | | throw replyStatus switch |
| | | 922 | | { |
| | | 923 | | ReplyStatus.ObjectNotExist => new ObjectNotExistException(ident, facet, operation), |
| | | 924 | | ReplyStatus.FacetNotExist => new FacetNotExistException(ident, facet, operation), |
| | | 925 | | _ => new OperationNotExistException(ident, facet, operation) |
| | | 926 | | }; |
| | | 927 | | } |
| | | 928 | | |
| | | 929 | | default: |
| | | 930 | | { |
| | | 931 | | string message = is_.readString(); |
| | | 932 | | throw replyStatus switch |
| | | 933 | | { |
| | | 934 | | ReplyStatus.UnknownException => new UnknownException(message), |
| | | 935 | | ReplyStatus.UnknownLocalException => new UnknownLocalException(message), |
| | | 936 | | ReplyStatus.UnknownUserException => new UnknownUserException(message), |
| | | 937 | | _ => new DispatchException(replyStatus, message), |
| | | 938 | | }; |
| | | 939 | | } |
| | | 940 | | } |
| | | 941 | | |
| | | 942 | | return responseImpl(false, replyStatus == ReplyStatus.Ok, true); |
| | | 943 | | } |
| | | 944 | | catch (Ice.Exception ex) |
| | | 945 | | { |
| | | 946 | | return exception(ex); |
| | | 947 | | } |
| | | 948 | | } |
| | | 949 | | |
| | | 950 | | public override int invokeRemote(Ice.ConnectionI connection, bool compress, bool response) |
| | | 951 | | { |
| | | 952 | | cachedConnection_ = connection; |
| | | 953 | | return connection.sendAsyncRequest(this, compress, response, 0); |
| | | 954 | | } |
| | | 955 | | |
| | | 956 | | public override int invokeCollocated(CollocatedRequestHandler handler) |
| | | 957 | | { |
| | | 958 | | // The stream cannot be cached if the proxy is not a twoway or there is an invocation timeout set. |
| | | 959 | | if (!proxy_.ice_isTwoway() || proxy_.iceReference().getInvocationTimeout() > TimeSpan.Zero) |
| | | 960 | | { |
| | | 961 | | // Disable caching by marking the streams as cached! |
| | | 962 | | state_ |= StateCachedBuffers; |
| | | 963 | | } |
| | | 964 | | return handler.invokeAsyncRequest(this, 0, synchronous_); |
| | | 965 | | } |
| | | 966 | | |
| | | 967 | | public new void abort(Ice.Exception ex) |
| | | 968 | | { |
| | | 969 | | if (proxy_.iceReference().isBatch) |
| | | 970 | | { |
| | | 971 | | proxy_.iceReference().batchRequestQueue.abortBatchRequest(os_); |
| | | 972 | | } |
| | | 973 | | |
| | | 974 | | base.abort(ex); |
| | | 975 | | } |
| | | 976 | | |
| | | 977 | | protected void invoke(string operation, bool synchronous) |
| | | 978 | | { |
| | | 979 | | synchronous_ = synchronous; |
| | | 980 | | if (proxy_.iceReference().isBatch) |
| | | 981 | | { |
| | | 982 | | sentSynchronously_ = true; |
| | | 983 | | proxy_.iceReference().batchRequestQueue.finishBatchRequest(os_, proxy_, operation); |
| | | 984 | | responseImpl(true, true, false); // Don't call sent/completed callback for batch AMI requests |
| | | 985 | | return; |
| | | 986 | | } |
| | | 987 | | |
| | | 988 | | // invokeImpl can throw |
| | | 989 | | invokeImpl(true); // userThread = true |
| | | 990 | | } |
| | | 991 | | |
| | | 992 | | public void invoke( |
| | | 993 | | string operation, |
| | | 994 | | Ice.OperationMode mode, |
| | | 995 | | Ice.FormatType? format, |
| | | 996 | | Dictionary<string, string> context, |
| | | 997 | | bool synchronous, |
| | | 998 | | System.Action<Ice.OutputStream> write) |
| | | 999 | | { |
| | | 1000 | | try |
| | | 1001 | | { |
| | | 1002 | | prepare(operation, mode, context); |
| | | 1003 | | if (write != null) |
| | | 1004 | | { |
| | | 1005 | | os_.startEncapsulation(encoding_, format); |
| | | 1006 | | write(os_); |
| | | 1007 | | os_.endEncapsulation(); |
| | | 1008 | | } |
| | | 1009 | | else |
| | | 1010 | | { |
| | | 1011 | | os_.writeEmptyEncapsulation(encoding_); |
| | | 1012 | | } |
| | | 1013 | | invoke(operation, synchronous); |
| | | 1014 | | } |
| | | 1015 | | catch (Ice.Exception ex) |
| | | 1016 | | { |
| | | 1017 | | abort(ex); |
| | | 1018 | | } |
| | | 1019 | | } |
| | | 1020 | | |
| | | 1021 | | public override void throwUserException() |
| | | 1022 | | { |
| | | 1023 | | try |
| | | 1024 | | { |
| | | 1025 | | is_.startEncapsulation(); |
| | | 1026 | | is_.throwException(); |
| | | 1027 | | } |
| | | 1028 | | catch (UserException ex) |
| | | 1029 | | { |
| | | 1030 | | is_.endEncapsulation(); |
| | | 1031 | | userException_?.Invoke(ex); |
| | | 1032 | | throw UnknownUserException.fromTypeId(ex.ice_id()); |
| | | 1033 | | } |
| | | 1034 | | } |
| | | 1035 | | |
| | | 1036 | | public override void cacheMessageBuffers() |
| | | 1037 | | { |
| | | 1038 | | if (proxy_.iceReference().getInstance().cacheMessageBuffers() > 0) |
| | | 1039 | | { |
| | | 1040 | | lock (mutex_) |
| | | 1041 | | { |
| | | 1042 | | if ((state_ & StateCachedBuffers) > 0) |
| | | 1043 | | { |
| | | 1044 | | return; |
| | | 1045 | | } |
| | | 1046 | | state_ |= StateCachedBuffers; |
| | | 1047 | | } |
| | | 1048 | | |
| | | 1049 | | is_?.reset(); |
| | | 1050 | | os_.reset(); |
| | | 1051 | | |
| | | 1052 | | proxy_.cacheMessageBuffers(is_, os_); |
| | | 1053 | | |
| | | 1054 | | is_ = null; |
| | | 1055 | | os_ = null; |
| | | 1056 | | } |
| | | 1057 | | } |
| | | 1058 | | |
| | | 1059 | | protected readonly Ice.EncodingVersion encoding_; |
| | | 1060 | | protected System.Action<Ice.UserException> userException_; |
| | | 1061 | | } |
| | | 1062 | | |
| | | 1063 | | public class OutgoingAsyncT<T> : OutgoingAsync |
| | | 1064 | | { |
| | | 1065 | | public OutgoingAsyncT( |
| | | 1066 | | Ice.ObjectPrxHelperBase prx, |
| | | 1067 | | OutgoingAsyncCompletionCallback completionCallback, |
| | | 1068 | | Ice.OutputStream os = null, |
| | | 1069 | | Ice.InputStream iss = null) |
| | | 1070 | | : base(prx, completionCallback, os, iss) |
| | | 1071 | | { |
| | | 1072 | | } |
| | | 1073 | | |
| | | 1074 | | public void invoke( |
| | | 1075 | | string operation, |
| | | 1076 | | Ice.OperationMode mode, |
| | | 1077 | | Ice.FormatType? format, |
| | | 1078 | | Dictionary<string, string> context, |
| | | 1079 | | bool synchronous, |
| | | 1080 | | System.Action<Ice.OutputStream> write = null, |
| | | 1081 | | System.Action<Ice.UserException> userException = null, |
| | | 1082 | | System.Func<Ice.InputStream, T> read = null) |
| | | 1083 | | { |
| | | 1084 | | read_ = read; |
| | | 1085 | | userException_ = userException; |
| | | 1086 | | base.invoke(operation, mode, format, context, synchronous, write); |
| | | 1087 | | } |
| | | 1088 | | |
| | | 1089 | | public T getResult(bool ok) |
| | | 1090 | | { |
| | | 1091 | | try |
| | | 1092 | | { |
| | | 1093 | | if (ok) |
| | | 1094 | | { |
| | | 1095 | | if (read_ == null) |
| | | 1096 | | { |
| | | 1097 | | if (is_ == null || is_.isEmpty()) |
| | | 1098 | | { |
| | | 1099 | | // |
| | | 1100 | | // If there's no response (oneway, batch-oneway proxies), we just set the result |
| | | 1101 | | // on completion without reading anything from the input stream. This is required for |
| | | 1102 | | // batch invocations. |
| | | 1103 | | // |
| | | 1104 | | } |
| | | 1105 | | else |
| | | 1106 | | { |
| | | 1107 | | is_.skipEmptyEncapsulation(); |
| | | 1108 | | } |
| | | 1109 | | return default; |
| | | 1110 | | } |
| | | 1111 | | else |
| | | 1112 | | { |
| | | 1113 | | is_.startEncapsulation(); |
| | | 1114 | | T r = read_(is_); |
| | | 1115 | | is_.endEncapsulation(); |
| | | 1116 | | return r; |
| | | 1117 | | } |
| | | 1118 | | } |
| | | 1119 | | else |
| | | 1120 | | { |
| | | 1121 | | throwUserException(); |
| | | 1122 | | return default; // make compiler happy |
| | | 1123 | | } |
| | | 1124 | | } |
| | | 1125 | | finally |
| | | 1126 | | { |
| | | 1127 | | cacheMessageBuffers(); |
| | | 1128 | | } |
| | | 1129 | | } |
| | | 1130 | | |
| | | 1131 | | protected System.Func<Ice.InputStream, T> read_; |
| | | 1132 | | } |
| | | 1133 | | |
| | | 1134 | | // |
| | | 1135 | | // Class for handling the proxy's begin_ice_flushBatchRequest request. |
| | | 1136 | | // |
| | | 1137 | | internal class ProxyFlushBatchAsync : ProxyOutgoingAsyncBase |
| | | 1138 | | { |
| | | 1139 | | public ProxyFlushBatchAsync(Ice.ObjectPrxHelperBase prx, OutgoingAsyncCompletionCallback completionCallback) |
| | | 1140 | | : base(prx, completionCallback) |
| | | 1141 | | { |
| | | 1142 | | } |
| | | 1143 | | |
| | | 1144 | | public override int invokeRemote(Ice.ConnectionI connection, bool compress, bool response) |
| | | 1145 | | { |
| | | 1146 | | if (_batchRequestNum == 0) |
| | | 1147 | | { |
| | | 1148 | | if (sent()) |
| | | 1149 | | { |
| | | 1150 | | return AsyncStatusSent | AsyncStatusInvokeSentCallback; |
| | | 1151 | | } |
| | | 1152 | | else |
| | | 1153 | | { |
| | | 1154 | | return AsyncStatusSent; |
| | | 1155 | | } |
| | | 1156 | | } |
| | | 1157 | | cachedConnection_ = connection; |
| | | 1158 | | return connection.sendAsyncRequest(this, compress, false, _batchRequestNum); |
| | | 1159 | | } |
| | | 1160 | | |
| | | 1161 | | public override int invokeCollocated(CollocatedRequestHandler handler) |
| | | 1162 | | { |
| | | 1163 | | if (_batchRequestNum == 0) |
| | | 1164 | | { |
| | | 1165 | | if (sent()) |
| | | 1166 | | { |
| | | 1167 | | return AsyncStatusSent | AsyncStatusInvokeSentCallback; |
| | | 1168 | | } |
| | | 1169 | | else |
| | | 1170 | | { |
| | | 1171 | | return AsyncStatusSent; |
| | | 1172 | | } |
| | | 1173 | | } |
| | | 1174 | | return handler.invokeAsyncRequest(this, _batchRequestNum, false); |
| | | 1175 | | } |
| | | 1176 | | |
| | | 1177 | | public void invoke(string operation, bool synchronous) |
| | | 1178 | | { |
| | | 1179 | | if (proxy_.iceReference().getProtocol().major != Protocol.currentProtocol.major) |
| | | 1180 | | { |
| | | 1181 | | throw new FeatureNotSupportedException( |
| | | 1182 | | $"Cannot send request using protocol version {proxy_.iceReference().getProtocol()}."); |
| | | 1183 | | } |
| | | 1184 | | try |
| | | 1185 | | { |
| | | 1186 | | synchronous_ = synchronous; |
| | | 1187 | | observer_ = ObserverHelper.get(proxy_, operation, null); |
| | | 1188 | | // Not used for proxy flush batch requests. |
| | | 1189 | | _batchRequestNum = proxy_.iceReference().batchRequestQueue.swap(os_, out _); |
| | | 1190 | | invokeImpl(true); // userThread = true |
| | | 1191 | | } |
| | | 1192 | | catch (Ice.Exception ex) |
| | | 1193 | | { |
| | | 1194 | | abort(ex); |
| | | 1195 | | } |
| | | 1196 | | } |
| | | 1197 | | |
| | | 1198 | | private int _batchRequestNum; |
| | | 1199 | | } |
| | | 1200 | | |
| | | 1201 | | // |
| | | 1202 | | // Class for handling the proxy's begin_ice_getConnection request. |
| | | 1203 | | // |
| | | 1204 | | internal class ProxyGetConnection : ProxyOutgoingAsyncBase |
| | | 1205 | | { |
| | | 1206 | | public ProxyGetConnection(Ice.ObjectPrxHelperBase prx, OutgoingAsyncCompletionCallback completionCallback) |
| | | 1207 | | : base(prx, completionCallback) |
| | | 1208 | | { |
| | | 1209 | | } |
| | | 1210 | | |
| | | 1211 | | public override int invokeRemote(Ice.ConnectionI connection, bool compress, bool response) |
| | | 1212 | | { |
| | | 1213 | | cachedConnection_ = connection; |
| | | 1214 | | if (responseImpl(false, true, true)) |
| | | 1215 | | { |
| | | 1216 | | invokeResponseAsync(); |
| | | 1217 | | } |
| | | 1218 | | return AsyncStatusSent; |
| | | 1219 | | } |
| | | 1220 | | |
| | | 1221 | | public override int invokeCollocated(CollocatedRequestHandler handler) |
| | | 1222 | | { |
| | | 1223 | | if (responseImpl(false, true, true)) |
| | | 1224 | | { |
| | | 1225 | | invokeResponseAsync(); |
| | | 1226 | | } |
| | | 1227 | | return AsyncStatusSent; |
| | | 1228 | | } |
| | | 1229 | | |
| | | 1230 | | public Ice.Connection getConnection() => cachedConnection_; |
| | | 1231 | | |
| | | 1232 | | public void invoke(string operation, bool synchronous) |
| | | 1233 | | { |
| | | 1234 | | try |
| | | 1235 | | { |
| | | 1236 | | synchronous_ = synchronous; |
| | | 1237 | | observer_ = ObserverHelper.get(proxy_, operation, null); |
| | | 1238 | | invokeImpl(true); // userThread = true |
| | | 1239 | | } |
| | | 1240 | | catch (Ice.Exception ex) |
| | | 1241 | | { |
| | | 1242 | | abort(ex); |
| | | 1243 | | } |
| | | 1244 | | } |
| | | 1245 | | } |
| | | 1246 | | |
| | | 1247 | | internal class ConnectionFlushBatchAsync : OutgoingAsyncBase |
| | | 1248 | | { |
| | | 1249 | | public ConnectionFlushBatchAsync( |
| | | 1250 | | Ice.ConnectionI connection, |
| | | 1251 | | Instance instance, |
| | | 1252 | | OutgoingAsyncCompletionCallback completionCallback) |
| | | 1253 | | : base(instance, completionCallback) => _connection = connection; |
| | | 1254 | | |
| | | 1255 | | public void invoke(string operation, Ice.CompressBatch compressBatch, bool synchronous) |
| | | 1256 | | { |
| | | 1257 | | synchronous_ = synchronous; |
| | | 1258 | | observer_ = ObserverHelper.get(instance_, operation); |
| | | 1259 | | try |
| | | 1260 | | { |
| | | 1261 | | int status; |
| | | 1262 | | int batchRequestNum = _connection.getBatchRequestQueue().swap(os_, out bool compress); |
| | | 1263 | | if (batchRequestNum == 0) |
| | | 1264 | | { |
| | | 1265 | | status = AsyncStatusSent; |
| | | 1266 | | if (sent()) |
| | | 1267 | | { |
| | | 1268 | | status |= AsyncStatusInvokeSentCallback; |
| | | 1269 | | } |
| | | 1270 | | } |
| | | 1271 | | else |
| | | 1272 | | { |
| | | 1273 | | bool comp; |
| | | 1274 | | if (compressBatch == Ice.CompressBatch.Yes) |
| | | 1275 | | { |
| | | 1276 | | comp = true; |
| | | 1277 | | } |
| | | 1278 | | else if (compressBatch == Ice.CompressBatch.No) |
| | | 1279 | | { |
| | | 1280 | | comp = false; |
| | | 1281 | | } |
| | | 1282 | | else |
| | | 1283 | | { |
| | | 1284 | | comp = compress; |
| | | 1285 | | } |
| | | 1286 | | status = _connection.sendAsyncRequest(this, comp, false, batchRequestNum); |
| | | 1287 | | } |
| | | 1288 | | |
| | | 1289 | | if ((status & AsyncStatusSent) != 0) |
| | | 1290 | | { |
| | | 1291 | | sentSynchronously_ = true; |
| | | 1292 | | if ((status & AsyncStatusInvokeSentCallback) != 0) |
| | | 1293 | | { |
| | | 1294 | | invokeSent(); |
| | | 1295 | | } |
| | | 1296 | | } |
| | | 1297 | | } |
| | | 1298 | | catch (RetryException ex) |
| | | 1299 | | { |
| | | 1300 | | try |
| | | 1301 | | { |
| | | 1302 | | throw ex.get(); |
| | | 1303 | | } |
| | | 1304 | | catch (Ice.LocalException ee) |
| | | 1305 | | { |
| | | 1306 | | if (exception(ee)) |
| | | 1307 | | { |
| | | 1308 | | invokeExceptionAsync(); |
| | | 1309 | | } |
| | | 1310 | | } |
| | | 1311 | | } |
| | | 1312 | | catch (Ice.Exception ex) |
| | | 1313 | | { |
| | | 1314 | | if (exception(ex)) |
| | | 1315 | | { |
| | | 1316 | | invokeExceptionAsync(); |
| | | 1317 | | } |
| | | 1318 | | } |
| | | 1319 | | } |
| | | 1320 | | |
| | | 1321 | | private readonly Ice.ConnectionI _connection; |
| | | 1322 | | } |
| | | 1323 | | |
| | | 1324 | | public class CommunicatorFlushBatchAsync : OutgoingAsyncBase |
| | | 1325 | | { |
| | | 1326 | | private class FlushBatch : OutgoingAsyncBase |
| | | 1327 | | { |
| | | 1328 | | public FlushBatch( |
| | | 1329 | | CommunicatorFlushBatchAsync outAsync, |
| | | 1330 | | Instance instance, |
| | | 1331 | | Ice.Instrumentation.InvocationObserver observer) |
| | | 1332 | | : base(instance, null) |
| | | 1333 | | { |
| | | 1334 | | _outAsync = outAsync; |
| | | 1335 | | _observer = observer; |
| | | 1336 | | } |
| | | 1337 | | |
| | | 1338 | | public override bool |
| | | 1339 | | sent() |
| | | 1340 | | { |
| | | 1341 | | childObserver_?.detach(); |
| | | 1342 | | childObserver_ = null; |
| | | 1343 | | _outAsync.check(false); |
| | | 1344 | | return false; |
| | | 1345 | | } |
| | | 1346 | | |
| | | 1347 | | public override bool |
| | | 1348 | | exception(Ice.Exception ex) |
| | | 1349 | | { |
| | | 1350 | | if (childObserver_ != null) |
| | | 1351 | | { |
| | | 1352 | | childObserver_.failed(ex.ice_id()); |
| | | 1353 | | childObserver_.detach(); |
| | | 1354 | | childObserver_ = null; |
| | | 1355 | | } |
| | | 1356 | | _outAsync.check(false); |
| | | 1357 | | return false; |
| | | 1358 | | } |
| | | 1359 | | |
| | | 1360 | | protected override Ice.Instrumentation.InvocationObserver |
| | | 1361 | | getObserver() => _observer; |
| | | 1362 | | |
| | | 1363 | | private readonly CommunicatorFlushBatchAsync _outAsync; |
| | | 1364 | | private readonly Ice.Instrumentation.InvocationObserver _observer; |
| | | 1365 | | } |
| | | 1366 | | |
| | | 1367 | | public CommunicatorFlushBatchAsync(Instance instance, OutgoingAsyncCompletionCallback callback) |
| | | 1368 | | : base(instance, callback) => |
| | | 1369 | | // |
| | | 1370 | | // _useCount is initialized to 1 to prevent premature callbacks. |
| | | 1371 | | // The caller must invoke ready() after all flush requests have |
| | | 1372 | | // been initiated. |
| | | 1373 | | // |
| | | 1374 | | _useCount = 1; |
| | | 1375 | | |
| | | 1376 | | internal void flushConnection(Ice.ConnectionI con, Ice.CompressBatch compressBatch) |
| | | 1377 | | { |
| | | 1378 | | lock (mutex_) |
| | | 1379 | | { |
| | | 1380 | | ++_useCount; |
| | | 1381 | | } |
| | | 1382 | | |
| | | 1383 | | try |
| | | 1384 | | { |
| | | 1385 | | var flushBatch = new FlushBatch(this, instance_, observer_); |
| | | 1386 | | int batchRequestNum = con.getBatchRequestQueue().swap(flushBatch.getOs(), out bool compress); |
| | | 1387 | | if (batchRequestNum == 0) |
| | | 1388 | | { |
| | | 1389 | | flushBatch.sent(); |
| | | 1390 | | } |
| | | 1391 | | else |
| | | 1392 | | { |
| | | 1393 | | bool comp; |
| | | 1394 | | if (compressBatch == Ice.CompressBatch.Yes) |
| | | 1395 | | { |
| | | 1396 | | comp = true; |
| | | 1397 | | } |
| | | 1398 | | else if (compressBatch == Ice.CompressBatch.No) |
| | | 1399 | | { |
| | | 1400 | | comp = false; |
| | | 1401 | | } |
| | | 1402 | | else |
| | | 1403 | | { |
| | | 1404 | | comp = compress; |
| | | 1405 | | } |
| | | 1406 | | con.sendAsyncRequest(flushBatch, comp, false, batchRequestNum); |
| | | 1407 | | } |
| | | 1408 | | } |
| | | 1409 | | catch (Ice.LocalException) |
| | | 1410 | | { |
| | | 1411 | | check(false); |
| | | 1412 | | throw; |
| | | 1413 | | } |
| | | 1414 | | } |
| | | 1415 | | |
| | | 1416 | | public void invoke(string operation, Ice.CompressBatch compressBatch, bool synchronous) |
| | | 1417 | | { |
| | | 1418 | | synchronous_ = synchronous; |
| | | 1419 | | observer_ = ObserverHelper.get(instance_, operation); |
| | | 1420 | | instance_.outgoingConnectionFactory().flushAsyncBatchRequests(compressBatch, this); |
| | | 1421 | | instance_.objectAdapterFactory().flushAsyncBatchRequests(compressBatch, this); |
| | | 1422 | | check(true); |
| | | 1423 | | } |
| | | 1424 | | |
| | | 1425 | | public void check(bool userThread) |
| | | 1426 | | { |
| | | 1427 | | lock (mutex_) |
| | | 1428 | | { |
| | | 1429 | | Debug.Assert(_useCount > 0); |
| | | 1430 | | if (--_useCount > 0) |
| | | 1431 | | { |
| | | 1432 | | return; |
| | | 1433 | | } |
| | | 1434 | | } |
| | | 1435 | | |
| | | 1436 | | if (sentImpl(true)) |
| | | 1437 | | { |
| | | 1438 | | if (userThread) |
| | | 1439 | | { |
| | | 1440 | | sentSynchronously_ = true; |
| | | 1441 | | invokeSent(); |
| | | 1442 | | } |
| | | 1443 | | else |
| | | 1444 | | { |
| | | 1445 | | invokeSentAsync(); |
| | | 1446 | | } |
| | | 1447 | | } |
| | | 1448 | | } |
| | | 1449 | | |
| | | 1450 | | private int _useCount; |
| | | 1451 | | } |
| | | 1452 | | |
| | | 1453 | | public abstract class TaskCompletionCallback<T> : TaskCompletionSource<T>, OutgoingAsyncCompletionCallback |
| | | 1454 | | { |
| | | 1455 | | protected TaskCompletionCallback(System.IProgress<bool> progress, CancellationToken cancellationToken) |
| | | 1456 | | : base(TaskCreationOptions.RunContinuationsAsynchronously) |
| | | 1457 | | { |
| | | 1458 | | progress_ = progress; |
| | | 1459 | | _cancellationToken = cancellationToken; |
| | | 1460 | | } |
| | | 1461 | | |
| | | 1462 | | public void init(OutgoingAsyncBase og) |
| | | 1463 | | { |
| | | 1464 | | if (_cancellationToken.CanBeCanceled) |
| | | 1465 | | { |
| | | 1466 | | _cancellationToken.Register(og.cancel); |
| | | 1467 | | } |
| | | 1468 | | } |
| | | 1469 | | |
| | | 1470 | | public bool handleSent(bool done, bool alreadySent, OutgoingAsyncBase og) |
| | | 1471 | | { |
| | | 1472 | | if (done && og.isSynchronous()) |
| | | 1473 | | { |
| | | 1474 | | Debug.Assert(progress_ == null); |
| | | 1475 | | handleInvokeSent(false, done, alreadySent, og); |
| | | 1476 | | return false; |
| | | 1477 | | } |
| | | 1478 | | return done || (progress_ != null && !alreadySent); // Invoke the sent callback only if not already invoked. |
| | | 1479 | | } |
| | | 1480 | | |
| | | 1481 | | public bool handleException(Ice.Exception ex, OutgoingAsyncBase og) |
| | | 1482 | | { |
| | | 1483 | | // |
| | | 1484 | | // If this is a synchronous call, we can notify the task from this thread to avoid |
| | | 1485 | | // the thread context switch. We know there aren't any continuations setup with the |
| | | 1486 | | // task. |
| | | 1487 | | // |
| | | 1488 | | if (og.isSynchronous()) |
| | | 1489 | | { |
| | | 1490 | | handleInvokeException(ex, og); |
| | | 1491 | | return false; |
| | | 1492 | | } |
| | | 1493 | | else |
| | | 1494 | | { |
| | | 1495 | | return true; |
| | | 1496 | | } |
| | | 1497 | | } |
| | | 1498 | | |
| | | 1499 | | public bool handleResponse(bool userThread, bool ok, OutgoingAsyncBase og) |
| | | 1500 | | { |
| | | 1501 | | // |
| | | 1502 | | // If called from the user thread (only the case for batch requests) or if this |
| | | 1503 | | // is a synchronous call, we can notify the task from this thread to avoid the |
| | | 1504 | | // thread context switch. We know there aren't any continuations setup with the |
| | | 1505 | | // task. |
| | | 1506 | | // |
| | | 1507 | | if (userThread || og.isSynchronous()) |
| | | 1508 | | { |
| | | 1509 | | handleInvokeResponse(ok, og); |
| | | 1510 | | return false; |
| | | 1511 | | } |
| | | 1512 | | else |
| | | 1513 | | { |
| | | 1514 | | return true; |
| | | 1515 | | } |
| | | 1516 | | } |
| | | 1517 | | |
| | | 1518 | | public virtual void handleInvokeSent(bool sentSynchronously, bool done, bool alreadySent, OutgoingAsyncBase og) |
| | | 1519 | | { |
| | | 1520 | | if (progress_ != null && !alreadySent) |
| | | 1521 | | { |
| | | 1522 | | progress_.Report(sentSynchronously); |
| | | 1523 | | } |
| | | 1524 | | if (done) |
| | | 1525 | | { |
| | | 1526 | | SetResult(default); |
| | | 1527 | | } |
| | | 1528 | | } |
| | | 1529 | | |
| | | 1530 | | public void handleInvokeException(Ice.Exception ex, OutgoingAsyncBase og) => SetException(ex); |
| | | 1531 | | |
| | | 1532 | | public abstract void handleInvokeResponse(bool ok, OutgoingAsyncBase og); |
| | | 1533 | | |
| | | 1534 | | private readonly CancellationToken _cancellationToken; |
| | | 1535 | | |
| | | 1536 | | protected readonly System.IProgress<bool> progress_; |
| | | 1537 | | } |
| | | 1538 | | |
| | | 1539 | | public class OperationTaskCompletionCallback<T> : TaskCompletionCallback<T> |
| | | 1540 | | { |
| | | 1541 | | public OperationTaskCompletionCallback(System.IProgress<bool> progress, CancellationToken cancellationToken) |
| | | 1542 | | : base(progress, cancellationToken) |
| | | 1543 | | { |
| | | 1544 | | } |
| | | 1545 | | |
| | | 1546 | | public override void handleInvokeResponse(bool ok, OutgoingAsyncBase og) => |
| | | 1547 | | SetResult(((OutgoingAsyncT<T>)og).getResult(ok)); |
| | | 1548 | | } |
| | | 1549 | | |
| | | 1550 | | public class FlushBatchTaskCompletionCallback : TaskCompletionCallback<object> |
| | | 1551 | | { |
| | | 1552 | | public FlushBatchTaskCompletionCallback( |
| | | 1553 | | IProgress<bool> progress = null, |
| | | 1554 | | CancellationToken cancellationToken = default) |
| | | 1555 | | : base(progress, cancellationToken) |
| | | 1556 | | { |
| | | 1557 | | } |
| | | 1558 | | |
| | | 1559 | | public override void handleInvokeResponse(bool ok, OutgoingAsyncBase og) => SetResult(null); |
| | | 1560 | | } |