| | | 1 | | // Copyright (c) ZeroC, Inc. |
| | | 2 | | |
| | | 3 | | using System.Diagnostics; |
| | | 4 | | |
| | | 5 | | namespace Ice.Internal; |
| | | 6 | | |
| | | 7 | | public sealed class LocatorInfo : IEquatable<LocatorInfo> |
| | | 8 | | { |
| | | 9 | | public interface GetEndpointsCallback |
| | | 10 | | { |
| | | 11 | | void setEndpoints(EndpointI[] endpoints, bool cached); |
| | | 12 | | |
| | | 13 | | void setException(Ice.LocalException ex); |
| | | 14 | | } |
| | | 15 | | |
| | | 16 | | private class RequestCallback |
| | | 17 | | { |
| | | 18 | | public void |
| | | 19 | | response(LocatorInfo locatorInfo, Ice.ObjectPrx proxy) |
| | | 20 | | { |
| | | 21 | | EndpointI[] endpoints = null; |
| | | 22 | | if (proxy != null) |
| | | 23 | | { |
| | | 24 | | Reference r = ((Ice.ObjectPrxHelperBase)proxy).iceReference(); |
| | | 25 | | if (_ref.isWellKnown() && !Protocol.isSupported(_ref.getEncoding(), r.getEncoding())) |
| | | 26 | | { |
| | | 27 | | // |
| | | 28 | | // If a well-known proxy and the returned |
| | | 29 | | // proxy encoding isn't supported, we're done: |
| | | 30 | | // there's no compatible endpoint we can use. |
| | | 31 | | // |
| | | 32 | | } |
| | | 33 | | else if (!r.isIndirect()) |
| | | 34 | | { |
| | | 35 | | endpoints = r.getEndpoints(); |
| | | 36 | | } |
| | | 37 | | else if (_ref.isWellKnown() && !r.isWellKnown()) |
| | | 38 | | { |
| | | 39 | | // |
| | | 40 | | // We're resolving the endpoints of a well-known object and the proxy returned |
| | | 41 | | // by the locator is an indirect proxy. We now need to resolve the endpoints |
| | | 42 | | // of this indirect proxy. |
| | | 43 | | // |
| | | 44 | | if (_ref.getInstance().traceLevels().location >= 1) |
| | | 45 | | { |
| | | 46 | | locatorInfo.trace( |
| | | 47 | | "retrieved adapter for well-known object from locator, adding to locator cache", |
| | | 48 | | _ref, |
| | | 49 | | r); |
| | | 50 | | } |
| | | 51 | | locatorInfo.getEndpoints(r, _ref, _ttl, _callback); |
| | | 52 | | return; |
| | | 53 | | } |
| | | 54 | | } |
| | | 55 | | |
| | | 56 | | if (_ref.getInstance().traceLevels().location >= 1) |
| | | 57 | | { |
| | | 58 | | locatorInfo.getEndpointsTrace(_ref, endpoints, false); |
| | | 59 | | } |
| | | 60 | | _callback?.setEndpoints(endpoints ?? [], false); |
| | | 61 | | } |
| | | 62 | | |
| | | 63 | | public void |
| | | 64 | | exception(LocatorInfo locatorInfo, Ice.Exception exc) |
| | | 65 | | { |
| | | 66 | | try |
| | | 67 | | { |
| | | 68 | | locatorInfo.getEndpointsException(_ref, exc); // This throws. |
| | | 69 | | } |
| | | 70 | | catch (Ice.LocalException ex) |
| | | 71 | | { |
| | | 72 | | _callback?.setException(ex); |
| | | 73 | | } |
| | | 74 | | } |
| | | 75 | | |
| | | 76 | | public |
| | | 77 | | RequestCallback(Reference @ref, TimeSpan ttl, GetEndpointsCallback cb) |
| | | 78 | | { |
| | | 79 | | _ref = @ref; |
| | | 80 | | _ttl = ttl; |
| | | 81 | | _callback = cb; |
| | | 82 | | } |
| | | 83 | | |
| | | 84 | | private readonly Reference _ref; |
| | | 85 | | private readonly TimeSpan _ttl; |
| | | 86 | | private readonly GetEndpointsCallback _callback; |
| | | 87 | | } |
| | | 88 | | |
| | | 89 | | private abstract class Request |
| | | 90 | | { |
| | | 91 | | public void |
| | | 92 | | addCallback(Reference @ref, Reference wellKnownRef, TimeSpan ttl, GetEndpointsCallback cb) |
| | | 93 | | { |
| | 1 | 94 | | var callback = new RequestCallback(@ref, ttl, cb); |
| | 1 | 95 | | lock (_mutex) |
| | | 96 | | { |
| | 1 | 97 | | if (!_response && _exception == null) |
| | | 98 | | { |
| | 1 | 99 | | _callbacks.Add(callback); |
| | 1 | 100 | | if (wellKnownRef != null) |
| | | 101 | | { |
| | | 102 | | // This request is to resolve the endpoints of a cached well-known object ref |
| | 1 | 103 | | _wellKnownRefs.Add(wellKnownRef); |
| | | 104 | | } |
| | 1 | 105 | | if (!_sent) |
| | | 106 | | { |
| | 1 | 107 | | _sent = true; |
| | 1 | 108 | | send(); |
| | | 109 | | } |
| | 1 | 110 | | return; |
| | | 111 | | } |
| | 1 | 112 | | } |
| | | 113 | | |
| | 1 | 114 | | if (_response) |
| | | 115 | | { |
| | 1 | 116 | | callback.response(_locatorInfo, _proxy); |
| | | 117 | | } |
| | | 118 | | else |
| | | 119 | | { |
| | | 120 | | Debug.Assert(_exception != null); |
| | 1 | 121 | | callback.exception(_locatorInfo, _exception); |
| | | 122 | | } |
| | 1 | 123 | | } |
| | | 124 | | |
| | 1 | 125 | | public Request(LocatorInfo locatorInfo, Reference @ref) |
| | | 126 | | { |
| | 1 | 127 | | _locatorInfo = locatorInfo; |
| | 1 | 128 | | _ref = @ref; |
| | 1 | 129 | | _sent = false; |
| | 1 | 130 | | _response = false; |
| | 1 | 131 | | } |
| | | 132 | | |
| | | 133 | | public void |
| | | 134 | | response(Ice.ObjectPrx proxy) |
| | | 135 | | { |
| | 1 | 136 | | lock (_mutex) |
| | | 137 | | { |
| | 1 | 138 | | _locatorInfo.finishRequest(_ref, _wellKnownRefs, proxy, false); |
| | 1 | 139 | | _response = true; |
| | 1 | 140 | | _proxy = proxy; |
| | 1 | 141 | | Monitor.PulseAll(_mutex); |
| | 1 | 142 | | } |
| | 1 | 143 | | foreach (RequestCallback callback in _callbacks) |
| | | 144 | | { |
| | 1 | 145 | | callback.response(_locatorInfo, proxy); |
| | | 146 | | } |
| | 1 | 147 | | } |
| | | 148 | | |
| | | 149 | | public void |
| | | 150 | | exception(Ice.Exception ex) |
| | | 151 | | { |
| | 1 | 152 | | lock (_mutex) |
| | | 153 | | { |
| | 1 | 154 | | _locatorInfo.finishRequest(_ref, _wellKnownRefs, null, ex is Ice.UserException); |
| | 1 | 155 | | _exception = ex; |
| | 1 | 156 | | Monitor.PulseAll(_mutex); |
| | 1 | 157 | | } |
| | | 158 | | |
| | 1 | 159 | | foreach (RequestCallback callback in _callbacks) |
| | | 160 | | { |
| | 1 | 161 | | callback.exception(_locatorInfo, ex); |
| | | 162 | | } |
| | 1 | 163 | | } |
| | | 164 | | |
| | | 165 | | protected abstract void send(); |
| | | 166 | | |
| | | 167 | | protected readonly LocatorInfo _locatorInfo; |
| | | 168 | | protected readonly Reference _ref; |
| | | 169 | | |
| | 1 | 170 | | private readonly List<RequestCallback> _callbacks = new List<RequestCallback>(); |
| | 1 | 171 | | private readonly List<Reference> _wellKnownRefs = new List<Reference>(); |
| | | 172 | | private bool _sent; |
| | | 173 | | private bool _response; |
| | | 174 | | private Ice.ObjectPrx _proxy; |
| | | 175 | | private Ice.Exception _exception; |
| | 1 | 176 | | private readonly object _mutex = new(); |
| | | 177 | | } |
| | | 178 | | |
| | | 179 | | private class ObjectRequest : Request |
| | | 180 | | { |
| | | 181 | | public ObjectRequest(LocatorInfo locatorInfo, Reference reference) |
| | | 182 | | : base(locatorInfo, reference) |
| | | 183 | | { |
| | | 184 | | } |
| | | 185 | | |
| | | 186 | | protected override void |
| | | 187 | | send() |
| | | 188 | | { |
| | | 189 | | _ = Task.Run( |
| | | 190 | | async () => |
| | | 191 | | { |
| | | 192 | | try |
| | | 193 | | { |
| | | 194 | | LocatorPrx locator = _locatorInfo.getLocator(); |
| | | 195 | | ObjectPrx proxy = await locator.findObjectByIdAsync(_ref.getIdentity()).ConfigureAwait(false); |
| | | 196 | | response(proxy); |
| | | 197 | | } |
| | | 198 | | catch (Ice.Exception ex) |
| | | 199 | | { |
| | | 200 | | exception(ex); |
| | | 201 | | } |
| | | 202 | | }); |
| | | 203 | | } |
| | | 204 | | } |
| | | 205 | | |
| | | 206 | | private class AdapterRequest : Request |
| | | 207 | | { |
| | | 208 | | public AdapterRequest(LocatorInfo locatorInfo, Reference reference) |
| | | 209 | | : base(locatorInfo, reference) |
| | | 210 | | { |
| | | 211 | | } |
| | | 212 | | |
| | | 213 | | protected override void |
| | | 214 | | send() |
| | | 215 | | { |
| | | 216 | | _ = Task.Run( |
| | | 217 | | async () => |
| | | 218 | | { |
| | | 219 | | try |
| | | 220 | | { |
| | | 221 | | LocatorPrx locator = _locatorInfo.getLocator(); |
| | | 222 | | ObjectPrx proxy = |
| | | 223 | | await locator.findAdapterByIdAsync(_ref.getAdapterId()).ConfigureAwait(false); |
| | | 224 | | response(proxy); |
| | | 225 | | } |
| | | 226 | | catch (Ice.Exception ex) |
| | | 227 | | { |
| | | 228 | | exception(ex); |
| | | 229 | | } |
| | | 230 | | }); |
| | | 231 | | } |
| | | 232 | | } |
| | | 233 | | |
| | | 234 | | internal LocatorInfo(Ice.LocatorPrx locator, LocatorTable table, bool background) |
| | | 235 | | { |
| | | 236 | | _locator = locator; |
| | | 237 | | _table = table; |
| | | 238 | | _background = background; |
| | | 239 | | } |
| | | 240 | | |
| | | 241 | | public void destroy() |
| | | 242 | | { |
| | | 243 | | lock (_mutex) |
| | | 244 | | { |
| | | 245 | | _locatorRegistry = null; |
| | | 246 | | _table.clear(); |
| | | 247 | | } |
| | | 248 | | } |
| | | 249 | | |
| | | 250 | | public static bool operator ==(LocatorInfo lhs, LocatorInfo rhs) => lhs is not null ? lhs.Equals(rhs) : rhs is null; |
| | | 251 | | |
| | | 252 | | public static bool operator !=(LocatorInfo lhs, LocatorInfo rhs) => !(lhs == rhs); |
| | | 253 | | |
| | | 254 | | public bool Equals(LocatorInfo other) => |
| | | 255 | | ReferenceEquals(this, other) || (other is not null && _locator.Equals(other._locator)); |
| | | 256 | | |
| | | 257 | | public override bool Equals(object obj) => Equals(obj as LocatorInfo); |
| | | 258 | | |
| | | 259 | | public override int GetHashCode() => _locator.GetHashCode(); |
| | | 260 | | |
| | | 261 | | public Ice.LocatorPrx getLocator() => |
| | | 262 | | // |
| | | 263 | | // No synchronization necessary, _locator is immutable. |
| | | 264 | | // |
| | | 265 | | _locator; |
| | | 266 | | |
| | | 267 | | public Ice.LocatorRegistryPrx getLocatorRegistry() |
| | | 268 | | { |
| | | 269 | | lock (_mutex) |
| | | 270 | | { |
| | | 271 | | if (_locatorRegistry != null) |
| | | 272 | | { |
| | | 273 | | return _locatorRegistry; |
| | | 274 | | } |
| | | 275 | | } |
| | | 276 | | |
| | | 277 | | // |
| | | 278 | | // Do not make locator calls from within sync. |
| | | 279 | | // |
| | | 280 | | Ice.LocatorRegistryPrx locatorRegistry = _locator.getRegistry(); |
| | | 281 | | if (locatorRegistry == null) |
| | | 282 | | { |
| | | 283 | | return null; |
| | | 284 | | } |
| | | 285 | | |
| | | 286 | | lock (_mutex) |
| | | 287 | | { |
| | | 288 | | // |
| | | 289 | | // The locator registry can't be located. We use ordered |
| | | 290 | | // endpoint selection in case the locator returned a proxy |
| | | 291 | | // with some endpoints which are preferred to be tried first. |
| | | 292 | | // |
| | | 293 | | _locatorRegistry = (Ice.LocatorRegistryPrx)locatorRegistry.ice_locator(null).ice_endpointSelection( |
| | | 294 | | Ice.EndpointSelectionType.Ordered); |
| | | 295 | | return _locatorRegistry; |
| | | 296 | | } |
| | | 297 | | } |
| | | 298 | | |
| | | 299 | | public void |
| | | 300 | | getEndpoints(Reference @ref, TimeSpan ttl, GetEndpointsCallback callback) => |
| | | 301 | | getEndpoints(@ref, null, ttl, callback); |
| | | 302 | | |
| | | 303 | | public void |
| | | 304 | | getEndpoints(Reference @ref, Reference wellKnownRef, TimeSpan ttl, GetEndpointsCallback callback) |
| | | 305 | | { |
| | | 306 | | Debug.Assert(@ref.isIndirect()); |
| | | 307 | | EndpointI[] endpoints = null; |
| | | 308 | | bool cached; |
| | | 309 | | if (!@ref.isWellKnown()) |
| | | 310 | | { |
| | | 311 | | endpoints = _table.getAdapterEndpoints(@ref.getAdapterId(), ttl, out cached); |
| | | 312 | | if (!cached) |
| | | 313 | | { |
| | | 314 | | if (_background && endpoints != null) |
| | | 315 | | { |
| | | 316 | | getAdapterRequest(@ref).addCallback(@ref, wellKnownRef, ttl, null); |
| | | 317 | | } |
| | | 318 | | else |
| | | 319 | | { |
| | | 320 | | getAdapterRequest(@ref).addCallback(@ref, wellKnownRef, ttl, callback); |
| | | 321 | | return; |
| | | 322 | | } |
| | | 323 | | } |
| | | 324 | | } |
| | | 325 | | else |
| | | 326 | | { |
| | | 327 | | Reference r = _table.getObjectReference(@ref.getIdentity(), ttl, out cached); |
| | | 328 | | if (!cached) |
| | | 329 | | { |
| | | 330 | | if (_background && r != null) |
| | | 331 | | { |
| | | 332 | | getObjectRequest(@ref).addCallback(@ref, null, ttl, null); |
| | | 333 | | } |
| | | 334 | | else |
| | | 335 | | { |
| | | 336 | | getObjectRequest(@ref).addCallback(@ref, null, ttl, callback); |
| | | 337 | | return; |
| | | 338 | | } |
| | | 339 | | } |
| | | 340 | | |
| | | 341 | | if (!r.isIndirect()) |
| | | 342 | | { |
| | | 343 | | endpoints = r.getEndpoints(); |
| | | 344 | | } |
| | | 345 | | else if (!r.isWellKnown()) |
| | | 346 | | { |
| | | 347 | | if (@ref.getInstance().traceLevels().location >= 1) |
| | | 348 | | { |
| | | 349 | | trace("found adapter for well-known object in locator cache", @ref, r); |
| | | 350 | | } |
| | | 351 | | getEndpoints(r, @ref, ttl, callback); |
| | | 352 | | return; |
| | | 353 | | } |
| | | 354 | | } |
| | | 355 | | |
| | | 356 | | Debug.Assert(endpoints != null); |
| | | 357 | | if (@ref.getInstance().traceLevels().location >= 1) |
| | | 358 | | { |
| | | 359 | | getEndpointsTrace(@ref, endpoints, true); |
| | | 360 | | } |
| | | 361 | | callback?.setEndpoints(endpoints, true); |
| | | 362 | | } |
| | | 363 | | |
| | | 364 | | public void clearCache(Reference rf) |
| | | 365 | | { |
| | | 366 | | Debug.Assert(rf.isIndirect()); |
| | | 367 | | if (!rf.isWellKnown()) |
| | | 368 | | { |
| | | 369 | | EndpointI[] endpoints = _table.removeAdapterEndpoints(rf.getAdapterId()); |
| | | 370 | | |
| | | 371 | | if (endpoints != null && rf.getInstance().traceLevels().location >= 2) |
| | | 372 | | { |
| | | 373 | | trace("removed endpoints for adapter from locator cache", rf, endpoints); |
| | | 374 | | } |
| | | 375 | | } |
| | | 376 | | else |
| | | 377 | | { |
| | | 378 | | Reference r = _table.removeObjectReference(rf.getIdentity()); |
| | | 379 | | if (r != null) |
| | | 380 | | { |
| | | 381 | | if (!r.isIndirect()) |
| | | 382 | | { |
| | | 383 | | if (rf.getInstance().traceLevels().location >= 2) |
| | | 384 | | { |
| | | 385 | | trace("removed endpoints for well-known object from locator cache", rf, r.getEndpoints()); |
| | | 386 | | } |
| | | 387 | | } |
| | | 388 | | else if (!r.isWellKnown()) |
| | | 389 | | { |
| | | 390 | | if (rf.getInstance().traceLevels().location >= 2) |
| | | 391 | | { |
| | | 392 | | trace("removed adapter for well-known object from locator cache", rf, r); |
| | | 393 | | } |
| | | 394 | | clearCache(r); |
| | | 395 | | } |
| | | 396 | | } |
| | | 397 | | } |
| | | 398 | | } |
| | | 399 | | |
| | | 400 | | private void trace(string msg, Reference r, EndpointI[] endpoints) |
| | | 401 | | { |
| | | 402 | | var s = new System.Text.StringBuilder(); |
| | | 403 | | s.Append(msg + "\n"); |
| | | 404 | | if (r.getAdapterId().Length > 0) |
| | | 405 | | { |
| | | 406 | | s.Append("adapter = " + r.getAdapterId() + "\n"); |
| | | 407 | | } |
| | | 408 | | else |
| | | 409 | | { |
| | | 410 | | s.Append("well-known proxy = " + r.ToString() + "\n"); |
| | | 411 | | } |
| | | 412 | | |
| | | 413 | | s.Append("endpoints = "); |
| | | 414 | | int sz = endpoints.Length; |
| | | 415 | | for (int i = 0; i < sz; i++) |
| | | 416 | | { |
| | | 417 | | s.Append(endpoints[i].ToString()); |
| | | 418 | | if (i + 1 < sz) |
| | | 419 | | { |
| | | 420 | | s.Append(':'); |
| | | 421 | | } |
| | | 422 | | } |
| | | 423 | | |
| | | 424 | | r.getInstance().initializationData().logger.trace(r.getInstance().traceLevels().locationCat, s.ToString()); |
| | | 425 | | } |
| | | 426 | | |
| | | 427 | | private void trace(string msg, Reference r, Reference resolved) |
| | | 428 | | { |
| | | 429 | | Debug.Assert(r.isWellKnown()); |
| | | 430 | | |
| | | 431 | | var s = new System.Text.StringBuilder(); |
| | | 432 | | s.Append(msg); |
| | | 433 | | s.Append('\n'); |
| | | 434 | | s.Append("well-known proxy = "); |
| | | 435 | | s.Append(r.ToString()); |
| | | 436 | | s.Append('\n'); |
| | | 437 | | s.Append("adapter = "); |
| | | 438 | | s.Append(resolved.getAdapterId()); |
| | | 439 | | |
| | | 440 | | r.getInstance().initializationData().logger.trace(r.getInstance().traceLevels().locationCat, s.ToString()); |
| | | 441 | | } |
| | | 442 | | |
| | | 443 | | private void getEndpointsException(Reference @ref, System.Exception exc) |
| | | 444 | | { |
| | | 445 | | try |
| | | 446 | | { |
| | | 447 | | throw exc; |
| | | 448 | | } |
| | | 449 | | catch (Ice.AdapterNotFoundException) |
| | | 450 | | { |
| | | 451 | | Instance instance = @ref.getInstance(); |
| | | 452 | | if (instance.traceLevels().location >= 1) |
| | | 453 | | { |
| | | 454 | | var s = new System.Text.StringBuilder(); |
| | | 455 | | s.Append("adapter not found\n"); |
| | | 456 | | s.Append("adapter = " + @ref.getAdapterId()); |
| | | 457 | | instance.initializationData().logger.trace(instance.traceLevels().locationCat, s.ToString()); |
| | | 458 | | } |
| | | 459 | | |
| | | 460 | | throw new NotRegisteredException("object adapter", @ref.getAdapterId()); |
| | | 461 | | } |
| | | 462 | | catch (Ice.ObjectNotFoundException) |
| | | 463 | | { |
| | | 464 | | Instance instance = @ref.getInstance(); |
| | | 465 | | if (instance.traceLevels().location >= 1) |
| | | 466 | | { |
| | | 467 | | var s = new System.Text.StringBuilder(); |
| | | 468 | | s.Append("object not found\n"); |
| | | 469 | | s.Append("object = " + Ice.Util.identityToString(@ref.getIdentity(), instance.toStringMode())); |
| | | 470 | | instance.initializationData().logger.trace(instance.traceLevels().locationCat, s.ToString()); |
| | | 471 | | } |
| | | 472 | | |
| | | 473 | | throw new NotRegisteredException( |
| | | 474 | | "object", |
| | | 475 | | Ice.Util.identityToString(@ref.getIdentity(), instance.toStringMode())); |
| | | 476 | | } |
| | | 477 | | catch (Ice.NotRegisteredException) |
| | | 478 | | { |
| | | 479 | | throw; |
| | | 480 | | } |
| | | 481 | | catch (Ice.LocalException ex) |
| | | 482 | | { |
| | | 483 | | Instance instance = @ref.getInstance(); |
| | | 484 | | if (instance.traceLevels().location >= 1) |
| | | 485 | | { |
| | | 486 | | var s = new System.Text.StringBuilder(); |
| | | 487 | | s.Append("couldn't contact the locator to retrieve endpoints\n"); |
| | | 488 | | if (@ref.getAdapterId().Length > 0) |
| | | 489 | | { |
| | | 490 | | s.Append("adapter = " + @ref.getAdapterId() + "\n"); |
| | | 491 | | } |
| | | 492 | | else |
| | | 493 | | { |
| | | 494 | | s.Append("well-known proxy = " + @ref.ToString() + "\n"); |
| | | 495 | | } |
| | | 496 | | s.Append("reason = " + ex); |
| | | 497 | | instance.initializationData().logger.trace(instance.traceLevels().locationCat, s.ToString()); |
| | | 498 | | } |
| | | 499 | | throw; |
| | | 500 | | } |
| | | 501 | | catch (System.Exception) |
| | | 502 | | { |
| | | 503 | | Debug.Assert(false); |
| | | 504 | | } |
| | | 505 | | } |
| | | 506 | | |
| | | 507 | | private void getEndpointsTrace(Reference @ref, EndpointI[] endpoints, bool cached) |
| | | 508 | | { |
| | | 509 | | if (endpoints != null && endpoints.Length > 0) |
| | | 510 | | { |
| | | 511 | | if (cached) |
| | | 512 | | { |
| | | 513 | | if (@ref.isWellKnown()) |
| | | 514 | | { |
| | | 515 | | trace("found endpoints for well-known proxy in locator cache", @ref, endpoints); |
| | | 516 | | } |
| | | 517 | | else |
| | | 518 | | { |
| | | 519 | | trace("found endpoints for adapter in locator cache", @ref, endpoints); |
| | | 520 | | } |
| | | 521 | | } |
| | | 522 | | else |
| | | 523 | | { |
| | | 524 | | if (@ref.isWellKnown()) |
| | | 525 | | { |
| | | 526 | | trace( |
| | | 527 | | "retrieved endpoints for well-known proxy from locator, adding to locator cache", |
| | | 528 | | @ref, |
| | | 529 | | endpoints); |
| | | 530 | | } |
| | | 531 | | else |
| | | 532 | | { |
| | | 533 | | trace( |
| | | 534 | | "retrieved endpoints for adapter from locator, adding to locator cache", |
| | | 535 | | @ref, |
| | | 536 | | endpoints); |
| | | 537 | | } |
| | | 538 | | } |
| | | 539 | | } |
| | | 540 | | else |
| | | 541 | | { |
| | | 542 | | Instance instance = @ref.getInstance(); |
| | | 543 | | var s = new System.Text.StringBuilder(); |
| | | 544 | | s.Append("no endpoints configured for "); |
| | | 545 | | if (@ref.getAdapterId().Length > 0) |
| | | 546 | | { |
| | | 547 | | s.Append("adapter\n"); |
| | | 548 | | s.Append("adapter = " + @ref.getAdapterId()); |
| | | 549 | | } |
| | | 550 | | else |
| | | 551 | | { |
| | | 552 | | s.Append("well-known object\n"); |
| | | 553 | | s.Append("well-known proxy = " + @ref.ToString()); |
| | | 554 | | } |
| | | 555 | | instance.initializationData().logger.trace(instance.traceLevels().locationCat, s.ToString()); |
| | | 556 | | } |
| | | 557 | | } |
| | | 558 | | |
| | | 559 | | private Request |
| | | 560 | | getAdapterRequest(Reference @ref) |
| | | 561 | | { |
| | | 562 | | if (@ref.getInstance().traceLevels().location >= 1) |
| | | 563 | | { |
| | | 564 | | Instance instance = @ref.getInstance(); |
| | | 565 | | var s = new System.Text.StringBuilder(); |
| | | 566 | | s.Append("searching for adapter by id\nadapter = "); |
| | | 567 | | s.Append(@ref.getAdapterId()); |
| | | 568 | | instance.initializationData().logger.trace(instance.traceLevels().locationCat, s.ToString()); |
| | | 569 | | } |
| | | 570 | | |
| | | 571 | | lock (_mutex) |
| | | 572 | | { |
| | | 573 | | if (_adapterRequests.TryGetValue(@ref.getAdapterId(), out Request request)) |
| | | 574 | | { |
| | | 575 | | return request; |
| | | 576 | | } |
| | | 577 | | |
| | | 578 | | request = new AdapterRequest(this, @ref); |
| | | 579 | | _adapterRequests.Add(@ref.getAdapterId(), request); |
| | | 580 | | return request; |
| | | 581 | | } |
| | | 582 | | } |
| | | 583 | | |
| | | 584 | | private Request |
| | | 585 | | getObjectRequest(Reference @ref) |
| | | 586 | | { |
| | | 587 | | if (@ref.getInstance().traceLevels().location >= 1) |
| | | 588 | | { |
| | | 589 | | Instance instance = @ref.getInstance(); |
| | | 590 | | var s = new System.Text.StringBuilder(); |
| | | 591 | | s.Append("searching for well-known object\nwell-known proxy = "); |
| | | 592 | | s.Append(@ref.ToString()); |
| | | 593 | | instance.initializationData().logger.trace(instance.traceLevels().locationCat, s.ToString()); |
| | | 594 | | } |
| | | 595 | | |
| | | 596 | | lock (_mutex) |
| | | 597 | | { |
| | | 598 | | if (_objectRequests.TryGetValue(@ref.getIdentity(), out Request request)) |
| | | 599 | | { |
| | | 600 | | return request; |
| | | 601 | | } |
| | | 602 | | |
| | | 603 | | request = new ObjectRequest(this, @ref); |
| | | 604 | | _objectRequests.Add(@ref.getIdentity(), request); |
| | | 605 | | return request; |
| | | 606 | | } |
| | | 607 | | } |
| | | 608 | | |
| | | 609 | | private void |
| | | 610 | | finishRequest(Reference @ref, List<Reference> wellKnownRefs, Ice.ObjectPrx proxy, bool notRegistered) |
| | | 611 | | { |
| | | 612 | | var @base = proxy as Ice.ObjectPrxHelperBase; |
| | | 613 | | if (proxy == null || @base.iceReference().isIndirect()) |
| | | 614 | | { |
| | | 615 | | // |
| | | 616 | | // Remove the cached references of well-known objects for which we tried |
| | | 617 | | // to resolved the endpoints if these endpoints are empty. |
| | | 618 | | // |
| | | 619 | | foreach (Reference r in wellKnownRefs) |
| | | 620 | | { |
| | | 621 | | _table.removeObjectReference(r.getIdentity()); |
| | | 622 | | } |
| | | 623 | | } |
| | | 624 | | |
| | | 625 | | if (!@ref.isWellKnown()) |
| | | 626 | | { |
| | | 627 | | if (proxy != null && !@base.iceReference().isIndirect()) |
| | | 628 | | { |
| | | 629 | | // Cache the adapter endpoints. |
| | | 630 | | _table.addAdapterEndpoints(@ref.getAdapterId(), @base.iceReference().getEndpoints()); |
| | | 631 | | } |
| | | 632 | | else if (notRegistered) // If the adapter isn't registered anymore, remove it from the cache. |
| | | 633 | | { |
| | | 634 | | _table.removeAdapterEndpoints(@ref.getAdapterId()); |
| | | 635 | | } |
| | | 636 | | |
| | | 637 | | lock (_mutex) |
| | | 638 | | { |
| | | 639 | | Debug.Assert(_adapterRequests.ContainsKey(@ref.getAdapterId())); |
| | | 640 | | _adapterRequests.Remove(@ref.getAdapterId()); |
| | | 641 | | } |
| | | 642 | | } |
| | | 643 | | else |
| | | 644 | | { |
| | | 645 | | if (proxy != null && !@base.iceReference().isWellKnown()) |
| | | 646 | | { |
| | | 647 | | // Cache the well-known object reference. |
| | | 648 | | _table.addObjectReference(@ref.getIdentity(), @base.iceReference()); |
| | | 649 | | } |
| | | 650 | | else if (notRegistered) // If the well-known object isn't registered anymore, remove it from the cache. |
| | | 651 | | { |
| | | 652 | | _table.removeObjectReference(@ref.getIdentity()); |
| | | 653 | | } |
| | | 654 | | |
| | | 655 | | lock (_mutex) |
| | | 656 | | { |
| | | 657 | | Debug.Assert(_objectRequests.ContainsKey(@ref.getIdentity())); |
| | | 658 | | _objectRequests.Remove(@ref.getIdentity()); |
| | | 659 | | } |
| | | 660 | | } |
| | | 661 | | } |
| | | 662 | | |
| | | 663 | | private readonly Ice.LocatorPrx _locator; |
| | | 664 | | private Ice.LocatorRegistryPrx _locatorRegistry; |
| | | 665 | | private readonly LocatorTable _table; |
| | | 666 | | private readonly bool _background; |
| | | 667 | | |
| | | 668 | | private readonly Dictionary<string, Request> _adapterRequests = new Dictionary<string, Request>(); |
| | | 669 | | private readonly Dictionary<Ice.Identity, Request> _objectRequests = new Dictionary<Ice.Identity, Request>(); |
| | | 670 | | private readonly object _mutex = new(); |
| | | 671 | | } |
| | | 672 | | |
| | | 673 | | public sealed class LocatorManager |
| | | 674 | | { |
| | | 675 | | private struct LocatorKey |
| | | 676 | | { |
| | | 677 | | public LocatorKey(Ice.LocatorPrx prx) |
| | | 678 | | { |
| | | 679 | | Reference r = ((Ice.ObjectPrxHelperBase)prx).iceReference(); |
| | | 680 | | _id = r.getIdentity(); |
| | | 681 | | _encoding = r.getEncoding(); |
| | | 682 | | } |
| | | 683 | | |
| | | 684 | | public override bool Equals(object o) |
| | | 685 | | { |
| | | 686 | | var k = (LocatorKey)o; |
| | | 687 | | if (!k._id.Equals(_id)) |
| | | 688 | | { |
| | | 689 | | return false; |
| | | 690 | | } |
| | | 691 | | if (!k._encoding.Equals(_encoding)) |
| | | 692 | | { |
| | | 693 | | return false; |
| | | 694 | | } |
| | | 695 | | return true; |
| | | 696 | | } |
| | | 697 | | |
| | | 698 | | public override int GetHashCode() => HashCode.Combine(_id, _encoding); |
| | | 699 | | |
| | | 700 | | private readonly Ice.Identity _id; |
| | | 701 | | private Ice.EncodingVersion _encoding; |
| | | 702 | | } |
| | | 703 | | |
| | | 704 | | internal LocatorManager(Ice.Properties properties) |
| | | 705 | | { |
| | | 706 | | _table = new Dictionary<Ice.LocatorPrx, LocatorInfo>(); |
| | | 707 | | _locatorTables = new Dictionary<LocatorKey, LocatorTable>(); |
| | | 708 | | _background = properties.getIcePropertyAsInt("Ice.BackgroundLocatorCacheUpdates") > 0; |
| | | 709 | | } |
| | | 710 | | |
| | | 711 | | internal void destroy() |
| | | 712 | | { |
| | | 713 | | lock (_mutex) |
| | | 714 | | { |
| | | 715 | | foreach (LocatorInfo info in _table.Values) |
| | | 716 | | { |
| | | 717 | | info.destroy(); |
| | | 718 | | } |
| | | 719 | | _table.Clear(); |
| | | 720 | | _locatorTables.Clear(); |
| | | 721 | | } |
| | | 722 | | } |
| | | 723 | | |
| | | 724 | | // |
| | | 725 | | // Returns locator info for a given locator. Automatically creates |
| | | 726 | | // the locator info if it doesn't exist yet. |
| | | 727 | | // |
| | | 728 | | public LocatorInfo get(Ice.LocatorPrx loc) |
| | | 729 | | { |
| | | 730 | | if (loc == null) |
| | | 731 | | { |
| | | 732 | | return null; |
| | | 733 | | } |
| | | 734 | | |
| | | 735 | | // |
| | | 736 | | // The locator can't be located. |
| | | 737 | | // |
| | | 738 | | Ice.LocatorPrx locator = Ice.LocatorPrxHelper.uncheckedCast(loc.ice_locator(null)); |
| | | 739 | | |
| | | 740 | | // |
| | | 741 | | // TODO: reap unused locator info objects? |
| | | 742 | | // |
| | | 743 | | lock (_mutex) |
| | | 744 | | { |
| | | 745 | | if (!_table.TryGetValue(locator, out LocatorInfo info)) |
| | | 746 | | { |
| | | 747 | | // |
| | | 748 | | // Rely on locator identity for the adapter table. We want to |
| | | 749 | | // have only one table per locator (not one per locator |
| | | 750 | | // proxy). |
| | | 751 | | // |
| | | 752 | | var key = new LocatorKey(locator); |
| | | 753 | | if (!_locatorTables.TryGetValue(key, out LocatorTable table)) |
| | | 754 | | { |
| | | 755 | | table = new LocatorTable(); |
| | | 756 | | _locatorTables[key] = table; |
| | | 757 | | } |
| | | 758 | | |
| | | 759 | | info = new LocatorInfo(locator, table, _background); |
| | | 760 | | _table[locator] = info; |
| | | 761 | | } |
| | | 762 | | |
| | | 763 | | return info; |
| | | 764 | | } |
| | | 765 | | } |
| | | 766 | | |
| | | 767 | | private readonly Dictionary<Ice.LocatorPrx, LocatorInfo> _table; |
| | | 768 | | private readonly Dictionary<LocatorKey, LocatorTable> _locatorTables; |
| | | 769 | | private readonly bool _background; |
| | | 770 | | private readonly object _mutex = new(); |
| | | 771 | | } |
| | | 772 | | |
| | | 773 | | internal sealed class LocatorTable |
| | | 774 | | { |
| | | 775 | | internal LocatorTable() |
| | | 776 | | { |
| | | 777 | | _adapterEndpointsTable = new Dictionary<string, EndpointTableEntry>(); |
| | | 778 | | _objectTable = new Dictionary<Ice.Identity, ReferenceTableEntry>(); |
| | | 779 | | } |
| | | 780 | | |
| | | 781 | | internal void clear() |
| | | 782 | | { |
| | | 783 | | lock (_mutex) |
| | | 784 | | { |
| | | 785 | | _adapterEndpointsTable.Clear(); |
| | | 786 | | _objectTable.Clear(); |
| | | 787 | | } |
| | | 788 | | } |
| | | 789 | | |
| | | 790 | | internal EndpointI[] getAdapterEndpoints(string adapter, TimeSpan ttl, out bool cached) |
| | | 791 | | { |
| | | 792 | | if (ttl == TimeSpan.Zero) // Locator cache disabled. |
| | | 793 | | { |
| | | 794 | | cached = false; |
| | | 795 | | return null; |
| | | 796 | | } |
| | | 797 | | |
| | | 798 | | lock (_mutex) |
| | | 799 | | { |
| | | 800 | | if (_adapterEndpointsTable.TryGetValue(adapter, out EndpointTableEntry entry)) |
| | | 801 | | { |
| | | 802 | | cached = checkTTL(entry.time, ttl); |
| | | 803 | | return entry.endpoints; |
| | | 804 | | } |
| | | 805 | | cached = false; |
| | | 806 | | return null; |
| | | 807 | | } |
| | | 808 | | } |
| | | 809 | | |
| | | 810 | | internal void addAdapterEndpoints(string adapter, EndpointI[] endpoints) |
| | | 811 | | { |
| | | 812 | | lock (_mutex) |
| | | 813 | | { |
| | | 814 | | _adapterEndpointsTable[adapter] = |
| | | 815 | | new EndpointTableEntry(Time.currentMonotonicTimeMillis(), endpoints); |
| | | 816 | | } |
| | | 817 | | } |
| | | 818 | | |
| | | 819 | | internal EndpointI[] removeAdapterEndpoints(string adapter) |
| | | 820 | | { |
| | | 821 | | lock (_mutex) |
| | | 822 | | { |
| | | 823 | | if (_adapterEndpointsTable.TryGetValue(adapter, out EndpointTableEntry entry)) |
| | | 824 | | { |
| | | 825 | | _adapterEndpointsTable.Remove(adapter); |
| | | 826 | | return entry.endpoints; |
| | | 827 | | } |
| | | 828 | | return null; |
| | | 829 | | } |
| | | 830 | | } |
| | | 831 | | |
| | | 832 | | internal Reference getObjectReference(Ice.Identity id, TimeSpan ttl, out bool cached) |
| | | 833 | | { |
| | | 834 | | if (ttl == TimeSpan.Zero) // Locator cache disabled. |
| | | 835 | | { |
| | | 836 | | cached = false; |
| | | 837 | | return null; |
| | | 838 | | } |
| | | 839 | | |
| | | 840 | | lock (_mutex) |
| | | 841 | | { |
| | | 842 | | if (_objectTable.TryGetValue(id, out ReferenceTableEntry entry)) |
| | | 843 | | { |
| | | 844 | | cached = checkTTL(entry.time, ttl); |
| | | 845 | | return entry.reference; |
| | | 846 | | } |
| | | 847 | | cached = false; |
| | | 848 | | return null; |
| | | 849 | | } |
| | | 850 | | } |
| | | 851 | | |
| | | 852 | | internal void addObjectReference(Ice.Identity id, Reference reference) |
| | | 853 | | { |
| | | 854 | | lock (_mutex) |
| | | 855 | | { |
| | | 856 | | _objectTable[id] = new ReferenceTableEntry(Time.currentMonotonicTimeMillis(), reference); |
| | | 857 | | } |
| | | 858 | | } |
| | | 859 | | |
| | | 860 | | internal Reference removeObjectReference(Ice.Identity id) |
| | | 861 | | { |
| | | 862 | | lock (_mutex) |
| | | 863 | | { |
| | | 864 | | if (_objectTable.TryGetValue(id, out ReferenceTableEntry entry)) |
| | | 865 | | { |
| | | 866 | | _objectTable.Remove(id); |
| | | 867 | | return entry.reference; |
| | | 868 | | } |
| | | 869 | | return null; |
| | | 870 | | } |
| | | 871 | | } |
| | | 872 | | |
| | | 873 | | private bool checkTTL(long time, TimeSpan ttl) |
| | | 874 | | { |
| | | 875 | | Debug.Assert(ttl != TimeSpan.Zero); |
| | | 876 | | if (ttl < TimeSpan.Zero) // TTL = infinite |
| | | 877 | | { |
| | | 878 | | return true; |
| | | 879 | | } |
| | | 880 | | else |
| | | 881 | | { |
| | | 882 | | return Time.currentMonotonicTimeMillis() - time <= ttl.TotalMilliseconds; |
| | | 883 | | } |
| | | 884 | | } |
| | | 885 | | |
| | | 886 | | private sealed class EndpointTableEntry |
| | | 887 | | { |
| | | 888 | | public EndpointTableEntry(long time, EndpointI[] endpoints) |
| | | 889 | | { |
| | | 890 | | this.time = time; |
| | | 891 | | this.endpoints = endpoints; |
| | | 892 | | } |
| | | 893 | | |
| | | 894 | | public long time; |
| | | 895 | | public EndpointI[] endpoints; |
| | | 896 | | } |
| | | 897 | | |
| | | 898 | | private sealed class ReferenceTableEntry |
| | | 899 | | { |
| | | 900 | | public ReferenceTableEntry(long time, Reference reference) |
| | | 901 | | { |
| | | 902 | | this.time = time; |
| | | 903 | | this.reference = reference; |
| | | 904 | | } |
| | | 905 | | |
| | | 906 | | public long time; |
| | | 907 | | public Reference reference; |
| | | 908 | | } |
| | | 909 | | |
| | | 910 | | private readonly Dictionary<string, EndpointTableEntry> _adapterEndpointsTable; |
| | | 911 | | private readonly Dictionary<Ice.Identity, ReferenceTableEntry> _objectTable; |
| | | 912 | | private readonly object _mutex = new(); |
| | | 913 | | } |