| | 1 | | // Copyright (c) ZeroC, Inc. |
| | 2 | |
|
| | 3 | | using System.Diagnostics; |
| | 4 | | using System.Text; |
| | 5 | |
|
| | 6 | | namespace IceDiscovery; |
| | 7 | |
|
| | 8 | | internal abstract class Request<T> |
| | 9 | | { |
| 1 | 10 | | protected Request(LookupI lookup, T id, int retryCount) |
| | 11 | | { |
| 1 | 12 | | lookup_ = lookup; |
| 1 | 13 | | retryCount_ = retryCount; |
| 1 | 14 | | _id = id; |
| 1 | 15 | | _requestId = Guid.NewGuid().ToString(); |
| 1 | 16 | | } |
| | 17 | |
|
| 1 | 18 | | public T getId() => _id; |
| | 19 | |
|
| | 20 | | public bool addCallback(TaskCompletionSource<Ice.ObjectPrx> cb) |
| | 21 | | { |
| 1 | 22 | | callbacks_.Add(cb); |
| 1 | 23 | | return callbacks_.Count == 1; |
| | 24 | | } |
| | 25 | |
|
| 0 | 26 | | public virtual bool retry() => --retryCount_ >= 0; |
| | 27 | |
|
| | 28 | | public void invoke(string domainId, Dictionary<LookupPrx, LookupReplyPrx> lookups) |
| | 29 | | { |
| 1 | 30 | | _lookupCount = lookups.Count; |
| 1 | 31 | | _failureCount = 0; |
| 1 | 32 | | var id = new Ice.Identity(_requestId, ""); |
| 1 | 33 | | foreach (KeyValuePair<LookupPrx, LookupReplyPrx> entry in lookups) |
| | 34 | | { |
| 1 | 35 | | invokeWithLookup( |
| 1 | 36 | | domainId, |
| 1 | 37 | | entry.Key, |
| 1 | 38 | | LookupReplyPrxHelper.uncheckedCast(entry.Value.ice_identity(id))); |
| | 39 | | } |
| 1 | 40 | | } |
| | 41 | |
|
| | 42 | | public bool exception() |
| | 43 | | { |
| 1 | 44 | | if (++_failureCount == _lookupCount) |
| | 45 | | { |
| 1 | 46 | | finished(null); |
| 1 | 47 | | return true; |
| | 48 | | } |
| 1 | 49 | | return false; |
| | 50 | | } |
| | 51 | |
|
| 1 | 52 | | public string getRequestId() => _requestId; |
| | 53 | |
|
| | 54 | | public abstract void finished(Ice.ObjectPrx proxy); |
| | 55 | |
|
| | 56 | | protected abstract void invokeWithLookup(string domainId, LookupPrx lookup, LookupReplyPrx lookupReply); |
| | 57 | |
|
| | 58 | | private readonly string _requestId; |
| | 59 | |
|
| | 60 | | protected LookupI lookup_; |
| | 61 | | protected int retryCount_; |
| | 62 | | protected int _lookupCount; |
| | 63 | | protected int _failureCount; |
| 1 | 64 | | protected List<TaskCompletionSource<Ice.ObjectPrx>> callbacks_ = new List<TaskCompletionSource<Ice.ObjectPrx>>(); |
| | 65 | |
|
| | 66 | | protected T _id; |
| | 67 | | } |
| | 68 | |
|
| | 69 | | internal class AdapterRequest : Request<string>, Ice.Internal.TimerTask |
| | 70 | | { |
| | 71 | | public AdapterRequest(LookupI lookup, string id, int retryCount) |
| | 72 | | : base(lookup, id, retryCount) => _start = DateTime.Now.Ticks; |
| | 73 | |
|
| | 74 | | public override bool retry() => _proxies.Count == 0 && --retryCount_ >= 0; |
| | 75 | |
|
| | 76 | | public bool response(Ice.ObjectPrx proxy, bool isReplicaGroup) |
| | 77 | | { |
| | 78 | | if (isReplicaGroup) |
| | 79 | | { |
| | 80 | | _proxies.Add(proxy); |
| | 81 | | if (_latency == 0) |
| | 82 | | { |
| | 83 | | _latency = (long)((DateTime.Now.Ticks - _start) * lookup_.latencyMultiplier() / 10000.0); |
| | 84 | | if (_latency == 0) |
| | 85 | | { |
| | 86 | | _latency = 1; // 1ms |
| | 87 | | } |
| | 88 | | lookup_.timer().cancel(this); |
| | 89 | | lookup_.timer().schedule(this, _latency); |
| | 90 | | } |
| | 91 | | return false; |
| | 92 | | } |
| | 93 | | finished(proxy); |
| | 94 | | return true; |
| | 95 | | } |
| | 96 | |
|
| | 97 | | public override void finished(Ice.ObjectPrx proxy) |
| | 98 | | { |
| | 99 | | if (proxy != null || _proxies.Count == 0) |
| | 100 | | { |
| | 101 | | sendResponse(proxy); |
| | 102 | | } |
| | 103 | | else if (_proxies.Count == 1) |
| | 104 | | { |
| | 105 | | sendResponse(_proxies.First()); |
| | 106 | | } |
| | 107 | | else |
| | 108 | | { |
| | 109 | | var endpoints = new List<Ice.Endpoint>(); |
| | 110 | | Ice.ObjectPrx result = null; |
| | 111 | | foreach (Ice.ObjectPrx prx in _proxies) |
| | 112 | | { |
| | 113 | | result ??= prx; |
| | 114 | | endpoints.AddRange(prx.ice_getEndpoints()); |
| | 115 | | } |
| | 116 | | sendResponse(result.ice_endpoints(endpoints.ToArray())); |
| | 117 | | } |
| | 118 | | } |
| | 119 | |
|
| | 120 | | public void runTimerTask() => lookup_.adapterRequestTimedOut(this); |
| | 121 | |
|
| | 122 | | protected override void invokeWithLookup(string domainId, LookupPrx lookup, LookupReplyPrx lookupReply) |
| | 123 | | { |
| | 124 | | lookup.findAdapterByIdAsync(domainId, _id, lookupReply).ContinueWith( |
| | 125 | | task => |
| | 126 | | { |
| | 127 | | try |
| | 128 | | { |
| | 129 | | task.Wait(); |
| | 130 | | } |
| | 131 | | catch (AggregateException ex) |
| | 132 | | { |
| | 133 | | lookup_.adapterRequestException(this, ex.InnerException); |
| | 134 | | } |
| | 135 | | }, |
| | 136 | | lookup.ice_scheduler()); |
| | 137 | | } |
| | 138 | |
|
| | 139 | | private void sendResponse(Ice.ObjectPrx proxy) |
| | 140 | | { |
| | 141 | | foreach (TaskCompletionSource<Ice.ObjectPrx> cb in callbacks_) |
| | 142 | | { |
| | 143 | | cb.SetResult(proxy); |
| | 144 | | } |
| | 145 | | callbacks_.Clear(); |
| | 146 | | } |
| | 147 | |
|
| | 148 | | // |
| | 149 | | // We use a HashSet because the same IceDiscovery plugin might return multiple times |
| | 150 | | // the same proxy if it's accessible through multiple network interfaces and if we |
| | 151 | | // also sent the request to multiple interfaces. |
| | 152 | | // |
| | 153 | | private readonly HashSet<Ice.ObjectPrx> _proxies = new HashSet<Ice.ObjectPrx>(); |
| | 154 | | private readonly long _start; |
| | 155 | | private long _latency; |
| | 156 | | } |
| | 157 | |
|
| | 158 | | internal class ObjectRequest : Request<Ice.Identity>, Ice.Internal.TimerTask |
| | 159 | | { |
| | 160 | | public ObjectRequest(LookupI lookup, Ice.Identity id, int retryCount) |
| | 161 | | : base(lookup, id, retryCount) |
| | 162 | | { |
| | 163 | | } |
| | 164 | |
|
| | 165 | | public void response(Ice.ObjectPrx proxy) => finished(proxy); |
| | 166 | |
|
| | 167 | | public override void finished(Ice.ObjectPrx proxy) |
| | 168 | | { |
| | 169 | | foreach (TaskCompletionSource<Ice.ObjectPrx> cb in callbacks_) |
| | 170 | | { |
| | 171 | | cb.SetResult(proxy); |
| | 172 | | } |
| | 173 | | callbacks_.Clear(); |
| | 174 | | } |
| | 175 | |
|
| | 176 | | public void runTimerTask() => lookup_.objectRequestTimedOut(this); |
| | 177 | |
|
| | 178 | | protected override void invokeWithLookup(string domainId, LookupPrx lookup, LookupReplyPrx lookupReply) |
| | 179 | | { |
| | 180 | | lookup.findObjectByIdAsync(domainId, _id, lookupReply).ContinueWith( |
| | 181 | | task => |
| | 182 | | { |
| | 183 | | try |
| | 184 | | { |
| | 185 | | task.Wait(); |
| | 186 | | } |
| | 187 | | catch (AggregateException ex) |
| | 188 | | { |
| | 189 | | lookup_.objectRequestException(this, ex.InnerException); |
| | 190 | | } |
| | 191 | | }, |
| | 192 | | lookup.ice_scheduler()); |
| | 193 | | } |
| | 194 | | } |
| | 195 | |
|
| | 196 | | internal class LookupI : LookupDisp_ |
| | 197 | | { |
| | 198 | | public LookupI(LocatorRegistryI registry, LookupPrx lookup, Ice.Properties properties) |
| | 199 | | { |
| | 200 | | _registry = registry; |
| | 201 | | _lookup = lookup; |
| | 202 | | _timeout = properties.getIcePropertyAsInt("IceDiscovery.Timeout"); |
| | 203 | | _retryCount = properties.getIcePropertyAsInt("IceDiscovery.RetryCount"); |
| | 204 | | _latencyMultiplier = properties.getIcePropertyAsInt("IceDiscovery.LatencyMultiplier"); |
| | 205 | | _domainId = properties.getIceProperty("IceDiscovery.DomainId"); |
| | 206 | | _timer = Ice.Internal.Util.getInstance(lookup.ice_getCommunicator()).timer(); |
| | 207 | |
|
| | 208 | | // |
| | 209 | | // Create one lookup proxy per endpoint from the given proxy. We want to send a multicast |
| | 210 | | // datagram on each endpoint. |
| | 211 | | // |
| | 212 | | var single = new Ice.Endpoint[1]; |
| | 213 | | foreach (Ice.Endpoint endpt in lookup.ice_getEndpoints()) |
| | 214 | | { |
| | 215 | | single[0] = endpt; |
| | 216 | | _lookups[(LookupPrx)lookup.ice_endpoints(single)] = null; |
| | 217 | | } |
| | 218 | | Debug.Assert(_lookups.Count > 0); |
| | 219 | | } |
| | 220 | |
|
| | 221 | | public void setLookupReply(LookupReplyPrx lookupReply) |
| | 222 | | { |
| | 223 | | // |
| | 224 | | // Use a lookup reply proxy whose address matches the interface used to send multicast datagrams. |
| | 225 | | // |
| | 226 | | var single = new Ice.Endpoint[1]; |
| | 227 | | foreach (LookupPrx key in new List<LookupPrx>(_lookups.Keys)) |
| | 228 | | { |
| | 229 | | var info = (Ice.UDPEndpointInfo)key.ice_getEndpoints()[0].getInfo(); |
| | 230 | | if (info.mcastInterface.Length > 0) |
| | 231 | | { |
| | 232 | | foreach (Ice.Endpoint q in lookupReply.ice_getEndpoints()) |
| | 233 | | { |
| | 234 | | Ice.EndpointInfo r = q.getInfo(); |
| | 235 | | if (r is Ice.IPEndpointInfo && |
| | 236 | | ((Ice.IPEndpointInfo)r).host.Equals(info.mcastInterface, StringComparison.Ordinal)) |
| | 237 | | { |
| | 238 | | single[0] = q; |
| | 239 | | _lookups[key] = (LookupReplyPrx)lookupReply.ice_endpoints(single); |
| | 240 | | } |
| | 241 | | } |
| | 242 | | } |
| | 243 | |
|
| | 244 | | if (_lookups[key] == null) |
| | 245 | | { |
| | 246 | | // Fallback: just use the given lookup reply proxy if no matching endpoint found. |
| | 247 | | _lookups[key] = lookupReply; |
| | 248 | | } |
| | 249 | | } |
| | 250 | | } |
| | 251 | |
|
| | 252 | | public override void findObjectById(string domainId, Ice.Identity id, LookupReplyPrx reply, Ice.Current current) |
| | 253 | | { |
| | 254 | | if (!domainId.Equals(_domainId, StringComparison.Ordinal)) |
| | 255 | | { |
| | 256 | | return; // Ignore |
| | 257 | | } |
| | 258 | |
|
| | 259 | | Ice.ObjectPrx proxy = _registry.findObject(id); |
| | 260 | | if (proxy != null) |
| | 261 | | { |
| | 262 | | // |
| | 263 | | // Reply to the multicast request using the given proxy. |
| | 264 | | // |
| | 265 | | try |
| | 266 | | { |
| | 267 | | reply.foundObjectByIdAsync(id, proxy); |
| | 268 | | } |
| | 269 | | catch (Ice.LocalException) |
| | 270 | | { |
| | 271 | | // Ignore. |
| | 272 | | } |
| | 273 | | } |
| | 274 | | } |
| | 275 | |
|
| | 276 | | public override void findAdapterById(string domainId, string adapterId, LookupReplyPrx reply, Ice.Current current) |
| | 277 | | { |
| | 278 | | if (!domainId.Equals(_domainId, StringComparison.Ordinal)) |
| | 279 | | { |
| | 280 | | return; // Ignore |
| | 281 | | } |
| | 282 | |
|
| | 283 | | Ice.ObjectPrx proxy = _registry.findAdapter(adapterId, out bool isReplicaGroup); |
| | 284 | | if (proxy != null) |
| | 285 | | { |
| | 286 | | // |
| | 287 | | // Reply to the multicast request using the given proxy. |
| | 288 | | // |
| | 289 | | try |
| | 290 | | { |
| | 291 | | reply.foundAdapterByIdAsync(adapterId, proxy, isReplicaGroup); |
| | 292 | | } |
| | 293 | | catch (Ice.LocalException) |
| | 294 | | { |
| | 295 | | // Ignore. |
| | 296 | | } |
| | 297 | | } |
| | 298 | | } |
| | 299 | |
|
| | 300 | | internal Task<Ice.ObjectPrx> findObject(Ice.Identity id) |
| | 301 | | { |
| | 302 | | lock (_mutex) |
| | 303 | | { |
| | 304 | | if (!_objectRequests.TryGetValue(id, out ObjectRequest request)) |
| | 305 | | { |
| | 306 | | request = new ObjectRequest(this, id, _retryCount); |
| | 307 | | _objectRequests.Add(id, request); |
| | 308 | | } |
| | 309 | |
|
| | 310 | | var task = new TaskCompletionSource<Ice.ObjectPrx>(TaskCreationOptions.RunContinuationsAsynchronously); |
| | 311 | | if (request.addCallback(task)) |
| | 312 | | { |
| | 313 | | try |
| | 314 | | { |
| | 315 | | request.invoke(_domainId, _lookups); |
| | 316 | | _timer.schedule(request, _timeout); |
| | 317 | | } |
| | 318 | | catch (Ice.LocalException) |
| | 319 | | { |
| | 320 | | request.finished(null); |
| | 321 | | _objectRequests.Remove(id); |
| | 322 | | } |
| | 323 | | } |
| | 324 | | return task.Task; |
| | 325 | | } |
| | 326 | | } |
| | 327 | |
|
| | 328 | | internal Task<Ice.ObjectPrx> findAdapter(string adapterId) |
| | 329 | | { |
| | 330 | | lock (_mutex) |
| | 331 | | { |
| | 332 | | if (!_adapterRequests.TryGetValue(adapterId, out AdapterRequest request)) |
| | 333 | | { |
| | 334 | | request = new AdapterRequest(this, adapterId, _retryCount); |
| | 335 | | _adapterRequests.Add(adapterId, request); |
| | 336 | | } |
| | 337 | |
|
| | 338 | | var task = new TaskCompletionSource<Ice.ObjectPrx>(TaskCreationOptions.RunContinuationsAsynchronously); |
| | 339 | | if (request.addCallback(task)) |
| | 340 | | { |
| | 341 | | try |
| | 342 | | { |
| | 343 | | request.invoke(_domainId, _lookups); |
| | 344 | | _timer.schedule(request, _timeout); |
| | 345 | | } |
| | 346 | | catch (Ice.LocalException) |
| | 347 | | { |
| | 348 | | request.finished(null); |
| | 349 | | _adapterRequests.Remove(adapterId); |
| | 350 | | } |
| | 351 | | } |
| | 352 | | return task.Task; |
| | 353 | | } |
| | 354 | | } |
| | 355 | |
|
| | 356 | | internal void foundObject(Ice.Identity id, string requestId, Ice.ObjectPrx proxy) |
| | 357 | | { |
| | 358 | | lock (_mutex) |
| | 359 | | { |
| | 360 | | if (_objectRequests.TryGetValue(id, out ObjectRequest request) && request.getRequestId() == requestId) |
| | 361 | | { |
| | 362 | | request.response(proxy); |
| | 363 | | _timer.cancel(request); |
| | 364 | | _objectRequests.Remove(id); |
| | 365 | | } |
| | 366 | | // else ignore responses from old requests |
| | 367 | | } |
| | 368 | | } |
| | 369 | |
|
| | 370 | | internal void foundAdapter(string adapterId, string requestId, Ice.ObjectPrx proxy, bool isReplicaGroup) |
| | 371 | | { |
| | 372 | | lock (_mutex) |
| | 373 | | { |
| | 374 | | if ( |
| | 375 | | _adapterRequests.TryGetValue(adapterId, out AdapterRequest request) && |
| | 376 | | request.getRequestId() == requestId) |
| | 377 | | { |
| | 378 | | if (request.response(proxy, isReplicaGroup)) |
| | 379 | | { |
| | 380 | | _timer.cancel(request); |
| | 381 | | _adapterRequests.Remove(request.getId()); |
| | 382 | | } |
| | 383 | | } |
| | 384 | | // else ignore responses from old requests |
| | 385 | | } |
| | 386 | | } |
| | 387 | |
|
| | 388 | | internal void objectRequestTimedOut(ObjectRequest request) |
| | 389 | | { |
| | 390 | | lock (_mutex) |
| | 391 | | { |
| | 392 | | if (!_objectRequests.TryGetValue(request.getId(), out ObjectRequest r) || r != request) |
| | 393 | | { |
| | 394 | | return; |
| | 395 | | } |
| | 396 | |
|
| | 397 | | if (request.retry()) |
| | 398 | | { |
| | 399 | | try |
| | 400 | | { |
| | 401 | | request.invoke(_domainId, _lookups); |
| | 402 | | _timer.schedule(request, _timeout); |
| | 403 | | return; |
| | 404 | | } |
| | 405 | | catch (Ice.LocalException) |
| | 406 | | { |
| | 407 | | } |
| | 408 | | } |
| | 409 | |
|
| | 410 | | request.finished(null); |
| | 411 | | _objectRequests.Remove(request.getId()); |
| | 412 | | _timer.cancel(request); |
| | 413 | | } |
| | 414 | | } |
| | 415 | |
|
| | 416 | | internal void objectRequestException(ObjectRequest request, Exception ex) |
| | 417 | | { |
| | 418 | | lock (_mutex) |
| | 419 | | { |
| | 420 | | if (!_objectRequests.TryGetValue(request.getId(), out ObjectRequest r) || r != request) |
| | 421 | | { |
| | 422 | | return; |
| | 423 | | } |
| | 424 | |
|
| | 425 | | if (request.exception()) |
| | 426 | | { |
| | 427 | | if (_warnOnce) |
| | 428 | | { |
| | 429 | | var s = new StringBuilder(); |
| | 430 | | s.Append("failed to lookup object `"); |
| | 431 | | s.Append(_lookup.ice_getCommunicator().identityToString(request.getId())); |
| | 432 | | s.Append("' with lookup proxy `"); |
| | 433 | | s.Append(_lookup); |
| | 434 | | s.Append("':\n"); |
| | 435 | | s.Append(ex.ToString()); |
| | 436 | | _lookup.ice_getCommunicator().getLogger().warning(s.ToString()); |
| | 437 | | _warnOnce = false; |
| | 438 | | } |
| | 439 | | _timer.cancel(request); |
| | 440 | | _objectRequests.Remove(request.getId()); |
| | 441 | | } |
| | 442 | | } |
| | 443 | | } |
| | 444 | |
|
| | 445 | | internal void adapterRequestTimedOut(AdapterRequest request) |
| | 446 | | { |
| | 447 | | lock (_mutex) |
| | 448 | | { |
| | 449 | | if (!_adapterRequests.TryGetValue(request.getId(), out AdapterRequest r) || r != request) |
| | 450 | | { |
| | 451 | | return; |
| | 452 | | } |
| | 453 | |
|
| | 454 | | if (request.retry()) |
| | 455 | | { |
| | 456 | | try |
| | 457 | | { |
| | 458 | | request.invoke(_domainId, _lookups); |
| | 459 | | _timer.schedule(request, _timeout); |
| | 460 | | return; |
| | 461 | | } |
| | 462 | | catch (Ice.LocalException) |
| | 463 | | { |
| | 464 | | } |
| | 465 | | } |
| | 466 | |
|
| | 467 | | request.finished(null); |
| | 468 | | _adapterRequests.Remove(request.getId()); |
| | 469 | | _timer.cancel(request); |
| | 470 | | } |
| | 471 | | } |
| | 472 | |
|
| | 473 | | internal void adapterRequestException(AdapterRequest request, Exception ex) |
| | 474 | | { |
| | 475 | | lock (_mutex) |
| | 476 | | { |
| | 477 | | if (!_adapterRequests.TryGetValue(request.getId(), out AdapterRequest r) || r != request) |
| | 478 | | { |
| | 479 | | return; |
| | 480 | | } |
| | 481 | |
|
| | 482 | | if (request.exception()) |
| | 483 | | { |
| | 484 | | if (_warnOnce) |
| | 485 | | { |
| | 486 | | var s = new StringBuilder(); |
| | 487 | | s.Append("failed to lookup adapter `"); |
| | 488 | | s.Append(request.getId()); |
| | 489 | | s.Append("' with lookup proxy `"); |
| | 490 | | s.Append(_lookup); |
| | 491 | | s.Append("':\n"); |
| | 492 | | s.Append(ex.ToString()); |
| | 493 | | _lookup.ice_getCommunicator().getLogger().warning(s.ToString()); |
| | 494 | | _warnOnce = false; |
| | 495 | | } |
| | 496 | | _timer.cancel(request); |
| | 497 | | _adapterRequests.Remove(request.getId()); |
| | 498 | | } |
| | 499 | | } |
| | 500 | | } |
| | 501 | |
|
| | 502 | | internal Ice.Internal.Timer timer() => _timer; |
| | 503 | |
|
| | 504 | | internal int latencyMultiplier() => _latencyMultiplier; |
| | 505 | |
|
| | 506 | | private readonly LocatorRegistryI _registry; |
| | 507 | | private readonly LookupPrx _lookup; |
| | 508 | | private readonly Dictionary<LookupPrx, LookupReplyPrx> _lookups = new Dictionary<LookupPrx, LookupReplyPrx>(); |
| | 509 | | private readonly int _timeout; |
| | 510 | | private readonly int _retryCount; |
| | 511 | | private readonly int _latencyMultiplier; |
| | 512 | | private readonly string _domainId; |
| | 513 | |
|
| | 514 | | private readonly Ice.Internal.Timer _timer; |
| | 515 | | private bool _warnOnce = true; |
| | 516 | | private readonly Dictionary<Ice.Identity, ObjectRequest> _objectRequests = |
| | 517 | | new Dictionary<Ice.Identity, ObjectRequest>(); |
| | 518 | |
|
| | 519 | | private readonly Dictionary<string, AdapterRequest> _adapterRequests = new Dictionary<string, AdapterRequest>(); |
| | 520 | | private readonly object _mutex = new(); |
| | 521 | | } |
| | 522 | |
|
| | 523 | | internal class LookupReplyI : LookupReplyDisp_ |
| | 524 | | { |
| | 525 | | public LookupReplyI(LookupI lookup) => _lookup = lookup; |
| | 526 | |
|
| | 527 | | public override void foundObjectById(Ice.Identity id, Ice.ObjectPrx proxy, Ice.Current c) => |
| | 528 | | _lookup.foundObject(id, c.id.name, proxy); |
| | 529 | |
|
| | 530 | | public override void foundAdapterById(string adapterId, Ice.ObjectPrx proxy, bool isReplicaGroup, Ice.Current c) => |
| | 531 | | _lookup.foundAdapter(adapterId, c.id.name, proxy, isReplicaGroup); |
| | 532 | |
|
| | 533 | | private readonly LookupI _lookup; |
| | 534 | | } |