src/content/child/service_worker/service_worker_dispatcher.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/child/service_worker/service_worker_dispatcher.h"
   6
   7 #include "base/debug/trace_event.h"
   8 #include "base/lazy_instance.h"
   9 #include "base/stl_util.h"
  10 #include "base/threading/thread_local.h"
  11 #include "content/child/child_thread.h"
  12 #include "content/child/service_worker/service_worker_handle_reference.h"
  13 #include "content/child/service_worker/service_worker_provider_context.h"
  14 #include "content/child/service_worker/service_worker_registration_handle_reference.h"
  15 #include "content/child/service_worker/web_service_worker_impl.h"
  16 #include "content/child/service_worker/web_service_worker_registration_impl.h"
  17 #include "content/child/thread_safe_sender.h"
  18 #include "content/child/webmessageportchannel_impl.h"
  19 #include "content/common/service_worker/service_worker_messages.h"
  20 #include "content/public/common/url_utils.h"
  21 #include "third_party/WebKit/public/platform/WebServiceWorkerProviderClient.h"
  22 #include "third_party/WebKit/public/web/WebSecurityOrigin.h"
  23
  24 using blink::WebServiceWorkerError;
  25 using blink::WebServiceWorkerProvider;
  26 using base::ThreadLocalPointer;
  27
  28 namespace content {
  29
  30 namespace {
  31
  32 base::LazyInstance<ThreadLocalPointer<ServiceWorkerDispatcher> >::Leaky
  33     g_dispatcher_tls = LAZY_INSTANCE_INITIALIZER;
  34
  35 ServiceWorkerDispatcher* const kHasBeenDeleted =
  36     reinterpret_cast<ServiceWorkerDispatcher*>(0x1);
  37
  38 int CurrentWorkerId() {
  39   return WorkerTaskRunner::Instance()->CurrentWorkerId();
  40 }
  41
  42 }  // namespace
  43
  44 ServiceWorkerDispatcher::ServiceWorkerDispatcher(
  45     ThreadSafeSender* thread_safe_sender)
  46     : thread_safe_sender_(thread_safe_sender) {
  47   g_dispatcher_tls.Pointer()->Set(this);
  48 }
  49
  50 ServiceWorkerDispatcher::~ServiceWorkerDispatcher() {
  51   g_dispatcher_tls.Pointer()->Set(kHasBeenDeleted);
  52 }
  53
  54 void ServiceWorkerDispatcher::OnMessageReceived(const IPC::Message& msg) {
  55   bool handled = true;
  56   IPC_BEGIN_MESSAGE_MAP(ServiceWorkerDispatcher, msg)
  57     IPC_MESSAGE_HANDLER(ServiceWorkerMsg_AssociateRegistration,
  58                         OnAssociateRegistration)
  59     IPC_MESSAGE_HANDLER(ServiceWorkerMsg_DisassociateRegistration,
  60                         OnDisassociateRegistration)
  61     IPC_MESSAGE_HANDLER(ServiceWorkerMsg_ServiceWorkerRegistered, OnRegistered)
  62     IPC_MESSAGE_HANDLER(ServiceWorkerMsg_ServiceWorkerUnregistered,
  63                         OnUnregistered)
  64     IPC_MESSAGE_HANDLER(ServiceWorkerMsg_DidGetRegistration,
  65                         OnDidGetRegistration)
  66     IPC_MESSAGE_HANDLER(ServiceWorkerMsg_ServiceWorkerRegistrationError,
  67                         OnRegistrationError)
  68     IPC_MESSAGE_HANDLER(ServiceWorkerMsg_ServiceWorkerUnregistrationError,
  69                         OnUnregistrationError)
  70     IPC_MESSAGE_HANDLER(ServiceWorkerMsg_ServiceWorkerGetRegistrationError,
  71                         OnGetRegistrationError)
  72     IPC_MESSAGE_HANDLER(ServiceWorkerMsg_ServiceWorkerStateChanged,
  73                         OnServiceWorkerStateChanged)
  74     IPC_MESSAGE_HANDLER(ServiceWorkerMsg_SetVersionAttributes,
  75                         OnSetVersionAttributes)
  76     IPC_MESSAGE_HANDLER(ServiceWorkerMsg_UpdateFound,
  77                         OnUpdateFound)
  78     IPC_MESSAGE_HANDLER(ServiceWorkerMsg_SetControllerServiceWorker,
  79                         OnSetControllerServiceWorker)
  80     IPC_MESSAGE_HANDLER(ServiceWorkerMsg_MessageToDocument,
  81                         OnPostMessage)
  82     IPC_MESSAGE_UNHANDLED(handled = false)
  83   IPC_END_MESSAGE_MAP()
  84   DCHECK(handled) << "Unhandled message:" << msg.type();
  85 }
  86
  87 bool ServiceWorkerDispatcher::Send(IPC::Message* msg) {
  88   return thread_safe_sender_->Send(msg);
  89 }
  90
  91 void ServiceWorkerDispatcher::RegisterServiceWorker(
  92     int provider_id,
  93     const GURL& pattern,
  94     const GURL& script_url,
  95     WebServiceWorkerRegistrationCallbacks* callbacks) {
  96   DCHECK(callbacks);
  97
  98   if (pattern.possibly_invalid_spec().size() > GetMaxURLChars() ||
  99       script_url.possibly_invalid_spec().size() > GetMaxURLChars()) {
 100     scoped_ptr<WebServiceWorkerRegistrationCallbacks>
 101         owned_callbacks(callbacks);
 102     scoped_ptr<WebServiceWorkerError> error(new WebServiceWorkerError(
 103         WebServiceWorkerError::ErrorTypeSecurity, "URL too long"));
 104     callbacks->onError(error.release());
 105     return;
 106   }
 107
 108   int request_id = pending_registration_callbacks_.Add(callbacks);
 109   TRACE_EVENT_ASYNC_BEGIN2("ServiceWorker",
 110                            "ServiceWorkerDispatcher::RegisterServiceWorker",
 111                            request_id,
 112                            "Scope", pattern.spec(),
 113                            "Script URL", script_url.spec());
 114   thread_safe_sender_->Send(new ServiceWorkerHostMsg_RegisterServiceWorker(
 115       CurrentWorkerId(), request_id, provider_id, pattern, script_url));
 116 }
 117
 118 void ServiceWorkerDispatcher::UnregisterServiceWorker(
 119     int provider_id,
 120     const GURL& pattern,
 121     WebServiceWorkerUnregistrationCallbacks* callbacks) {
 122   DCHECK(callbacks);
 123
 124   if (pattern.possibly_invalid_spec().size() > GetMaxURLChars()) {
 125     scoped_ptr<WebServiceWorkerUnregistrationCallbacks>
 126         owned_callbacks(callbacks);
 127     scoped_ptr<WebServiceWorkerError> error(new WebServiceWorkerError(
 128         WebServiceWorkerError::ErrorTypeSecurity, "URL too long"));
 129     callbacks->onError(error.release());
 130     return;
 131   }
 132
 133   int request_id = pending_unregistration_callbacks_.Add(callbacks);
 134   TRACE_EVENT_ASYNC_BEGIN1("ServiceWorker",
 135                            "ServiceWorkerDispatcher::UnregisterServiceWorker",
 136                            request_id,
 137                            "Scope", pattern.spec());
 138   thread_safe_sender_->Send(new ServiceWorkerHostMsg_UnregisterServiceWorker(
 139       CurrentWorkerId(), request_id, provider_id, pattern));
 140 }
 141
 142 void ServiceWorkerDispatcher::GetRegistration(
 143     int provider_id,
 144     const GURL& document_url,
 145     WebServiceWorkerRegistrationCallbacks* callbacks) {
 146   DCHECK(callbacks);
 147
 148   if (document_url.possibly_invalid_spec().size() > GetMaxURLChars()) {
 149     scoped_ptr<WebServiceWorkerRegistrationCallbacks>
 150         owned_callbacks(callbacks);
 151     scoped_ptr<WebServiceWorkerError> error(new WebServiceWorkerError(
 152         WebServiceWorkerError::ErrorTypeSecurity, "URL too long"));
 153     callbacks->onError(error.release());
 154     return;
 155   }
 156
 157   int request_id = pending_get_registration_callbacks_.Add(callbacks);
 158   TRACE_EVENT_ASYNC_BEGIN1("ServiceWorker",
 159                            "ServiceWorkerDispatcher::GetRegistration",
 160                            request_id,
 161                            "Document URL", document_url.spec());
 162   thread_safe_sender_->Send(new ServiceWorkerHostMsg_GetRegistration(
 163       CurrentWorkerId(), request_id, provider_id, document_url));
 164 }
 165
 166 void ServiceWorkerDispatcher::AddProviderContext(
 167     ServiceWorkerProviderContext* provider_context) {
 168   DCHECK(provider_context);
 169   int provider_id = provider_context->provider_id();
 170   DCHECK(!ContainsKey(provider_contexts_, provider_id));
 171   provider_contexts_[provider_id] = provider_context;
 172 }
 173
 174 void ServiceWorkerDispatcher::RemoveProviderContext(
 175     ServiceWorkerProviderContext* provider_context) {
 176   DCHECK(provider_context);
 177   DCHECK(ContainsKey(provider_contexts_, provider_context->provider_id()));
 178   provider_contexts_.erase(provider_context->provider_id());
 179   worker_to_provider_.erase(provider_context->installing_handle_id());
 180   worker_to_provider_.erase(provider_context->waiting_handle_id());
 181   worker_to_provider_.erase(provider_context->active_handle_id());
 182   worker_to_provider_.erase(provider_context->controller_handle_id());
 183 }
 184
 185 void ServiceWorkerDispatcher::AddScriptClient(
 186     int provider_id,
 187     blink::WebServiceWorkerProviderClient* client) {
 188   DCHECK(client);
 189   DCHECK(!ContainsKey(script_clients_, provider_id));
 190   script_clients_[provider_id] = client;
 191 }
 192
 193 void ServiceWorkerDispatcher::RemoveScriptClient(int provider_id) {
 194   // This could be possibly called multiple times to ensure termination.
 195   if (ContainsKey(script_clients_, provider_id))
 196     script_clients_.erase(provider_id);
 197 }
 198
 199 ServiceWorkerDispatcher*
 200 ServiceWorkerDispatcher::GetOrCreateThreadSpecificInstance(
 201     ThreadSafeSender* thread_safe_sender) {
 202   if (g_dispatcher_tls.Pointer()->Get() == kHasBeenDeleted) {
 203     NOTREACHED() << "Re-instantiating TLS ServiceWorkerDispatcher.";
 204     g_dispatcher_tls.Pointer()->Set(NULL);
 205   }
 206   if (g_dispatcher_tls.Pointer()->Get())
 207     return g_dispatcher_tls.Pointer()->Get();
 208
 209   ServiceWorkerDispatcher* dispatcher =
 210       new ServiceWorkerDispatcher(thread_safe_sender);
 211   if (WorkerTaskRunner::Instance()->CurrentWorkerId())
 212     WorkerTaskRunner::Instance()->AddStopObserver(dispatcher);
 213   return dispatcher;
 214 }
 215
 216 ServiceWorkerDispatcher* ServiceWorkerDispatcher::GetThreadSpecificInstance() {
 217   if (g_dispatcher_tls.Pointer()->Get() == kHasBeenDeleted)
 218     return NULL;
 219   return g_dispatcher_tls.Pointer()->Get();
 220 }
 221
 222 void ServiceWorkerDispatcher::OnWorkerRunLoopStopped() {
 223   delete this;
 224 }
 225
 226 WebServiceWorkerImpl* ServiceWorkerDispatcher::GetServiceWorker(
 227     const ServiceWorkerObjectInfo& info,
 228     bool adopt_handle) {
 229   if (info.handle_id == kInvalidServiceWorkerHandleId)
 230     return NULL;
 231
 232   WorkerObjectMap::iterator existing_worker =
 233       service_workers_.find(info.handle_id);
 234
 235   if (existing_worker != service_workers_.end()) {
 236     if (adopt_handle) {
 237       // We are instructed to adopt a handle but we already have one, so
 238       // adopt and destroy a handle ref.
 239       ServiceWorkerHandleReference::Adopt(info, thread_safe_sender_.get());
 240     }
 241     return existing_worker->second;
 242   }
 243
 244   scoped_ptr<ServiceWorkerHandleReference> handle_ref =
 245       adopt_handle
 246           ? ServiceWorkerHandleReference::Adopt(info, thread_safe_sender_.get())
 247           : ServiceWorkerHandleReference::Create(info,
 248                                                  thread_safe_sender_.get());
 249   // WebServiceWorkerImpl constructor calls AddServiceWorker.
 250   return new WebServiceWorkerImpl(handle_ref.Pass(), thread_safe_sender_.get());
 251 }
 252
 253 WebServiceWorkerRegistrationImpl*
 254 ServiceWorkerDispatcher::FindServiceWorkerRegistration(
 255     const ServiceWorkerRegistrationObjectInfo& info,
 256     bool adopt_handle) {
 257   RegistrationObjectMap::iterator registration =
 258       registrations_.find(info.handle_id);
 259   if (registration == registrations_.end())
 260     return NULL;
 261   if (adopt_handle) {
 262     // We are instructed to adopt a handle but we already have one, so
 263     // adopt and destroy a handle ref.
 264     ServiceWorkerRegistrationHandleReference::Adopt(
 265         info, thread_safe_sender_.get());
 266   }
 267   return registration->second;
 268 }
 269
 270 WebServiceWorkerRegistrationImpl*
 271 ServiceWorkerDispatcher::CreateServiceWorkerRegistration(
 272     const ServiceWorkerRegistrationObjectInfo& info,
 273     bool adopt_handle) {
 274   DCHECK(!FindServiceWorkerRegistration(info, adopt_handle));
 275   if (info.handle_id == kInvalidServiceWorkerRegistrationHandleId)
 276     return NULL;
 277
 278   scoped_ptr<ServiceWorkerRegistrationHandleReference> handle_ref =
 279       adopt_handle ? ServiceWorkerRegistrationHandleReference::Adopt(
 280                          info, thread_safe_sender_.get())
 281                    : ServiceWorkerRegistrationHandleReference::Create(
 282                          info, thread_safe_sender_.get());
 283
 284   // WebServiceWorkerRegistrationImpl constructor calls
 285   // AddServiceWorkerRegistration.
 286   return new WebServiceWorkerRegistrationImpl(handle_ref.Pass());
 287 }
 288
 289 void ServiceWorkerDispatcher::OnAssociateRegistration(
 290     int thread_id,
 291     int provider_id,
 292     const ServiceWorkerRegistrationObjectInfo& info,
 293     const ServiceWorkerVersionAttributes& attrs) {
 294   ProviderContextMap::iterator provider = provider_contexts_.find(provider_id);
 295   if (provider == provider_contexts_.end())
 296     return;
 297   provider->second->OnAssociateRegistration(info, attrs);
 298   if (attrs.installing.handle_id != kInvalidServiceWorkerHandleId)
 299     worker_to_provider_[attrs.installing.handle_id] = provider->second;
 300   if (attrs.waiting.handle_id != kInvalidServiceWorkerHandleId)
 301     worker_to_provider_[attrs.waiting.handle_id] = provider->second;
 302   if (attrs.active.handle_id != kInvalidServiceWorkerHandleId)
 303     worker_to_provider_[attrs.active.handle_id] = provider->second;
 304 }
 305
 306 void ServiceWorkerDispatcher::OnDisassociateRegistration(
 307     int thread_id,
 308     int provider_id) {
 309   ProviderContextMap::iterator provider = provider_contexts_.find(provider_id);
 310   if (provider == provider_contexts_.end())
 311     return;
 312   provider->second->OnDisassociateRegistration();
 313   worker_to_provider_.erase(provider->second->installing_handle_id());
 314   worker_to_provider_.erase(provider->second->waiting_handle_id());
 315   worker_to_provider_.erase(provider->second->active_handle_id());
 316   worker_to_provider_.erase(provider->second->controller_handle_id());
 317 }
 318
 319 void ServiceWorkerDispatcher::OnRegistered(
 320     int thread_id,
 321     int request_id,
 322     const ServiceWorkerRegistrationObjectInfo& info,
 323     const ServiceWorkerVersionAttributes& attrs) {
 324   TRACE_EVENT_ASYNC_STEP_INTO0("ServiceWorker",
 325                                "ServiceWorkerDispatcher::RegisterServiceWorker",
 326                                request_id,
 327                                "OnRegistered");
 328   TRACE_EVENT_ASYNC_END0("ServiceWorker",
 329                          "ServiceWorkerDispatcher::RegisterServiceWorker",
 330                          request_id);
 331   WebServiceWorkerRegistrationCallbacks* callbacks =
 332       pending_registration_callbacks_.Lookup(request_id);
 333   DCHECK(callbacks);
 334   if (!callbacks)
 335     return;
 336
 337   callbacks->onSuccess(FindOrCreateRegistration(info, attrs));
 338   pending_registration_callbacks_.Remove(request_id);
 339 }
 340
 341 void ServiceWorkerDispatcher::OnUnregistered(int thread_id,
 342                                              int request_id,
 343                                              bool is_success) {
 344   TRACE_EVENT_ASYNC_STEP_INTO0(
 345       "ServiceWorker",
 346       "ServiceWorkerDispatcher::UnregisterServiceWorker",
 347       request_id,
 348       "OnUnregistered");
 349   TRACE_EVENT_ASYNC_END0("ServiceWorker",
 350                          "ServiceWorkerDispatcher::UnregisterServiceWorker",
 351                          request_id);
 352   WebServiceWorkerUnregistrationCallbacks* callbacks =
 353       pending_unregistration_callbacks_.Lookup(request_id);
 354   DCHECK(callbacks);
 355   if (!callbacks)
 356     return;
 357   callbacks->onSuccess(&is_success);
 358   pending_unregistration_callbacks_.Remove(request_id);
 359 }
 360
 361 void ServiceWorkerDispatcher::OnDidGetRegistration(
 362     int thread_id,
 363     int request_id,
 364     const ServiceWorkerRegistrationObjectInfo& info,
 365     const ServiceWorkerVersionAttributes& attrs) {
 366   TRACE_EVENT_ASYNC_STEP_INTO0(
 367       "ServiceWorker",
 368       "ServiceWorkerDispatcher::GetRegistration",
 369       request_id,
 370       "OnDidGetRegistration");
 371   TRACE_EVENT_ASYNC_END0("ServiceWorker",
 372                          "ServiceWorkerDispatcher::GetRegistration",
 373                          request_id);
 374   WebServiceWorkerRegistrationCallbacks* callbacks =
 375       pending_get_registration_callbacks_.Lookup(request_id);
 376   DCHECK(callbacks);
 377   if (!callbacks)
 378     return;
 379
 380   WebServiceWorkerRegistrationImpl* registration = NULL;
 381   if (info.handle_id != kInvalidServiceWorkerHandleId)
 382     registration = FindOrCreateRegistration(info, attrs);
 383
 384   callbacks->onSuccess(registration);
 385   pending_get_registration_callbacks_.Remove(request_id);
 386 }
 387
 388 void ServiceWorkerDispatcher::OnRegistrationError(
 389     int thread_id,
 390     int request_id,
 391     WebServiceWorkerError::ErrorType error_type,
 392     const base::string16& message) {
 393   TRACE_EVENT_ASYNC_STEP_INTO0("ServiceWorker",
 394                                "ServiceWorkerDispatcher::RegisterServiceWorker",
 395                                request_id,
 396                                "OnRegistrationError");
 397   TRACE_EVENT_ASYNC_END0("ServiceWorker",
 398                          "ServiceWorkerDispatcher::RegisterServiceWorker",
 399                          request_id);
 400   WebServiceWorkerRegistrationCallbacks* callbacks =
 401       pending_registration_callbacks_.Lookup(request_id);
 402   DCHECK(callbacks);
 403   if (!callbacks)
 404     return;
 405
 406   scoped_ptr<WebServiceWorkerError> error(
 407       new WebServiceWorkerError(error_type, message));
 408   callbacks->onError(error.release());
 409   pending_registration_callbacks_.Remove(request_id);
 410 }
 411
 412 void ServiceWorkerDispatcher::OnUnregistrationError(
 413     int thread_id,
 414     int request_id,
 415     WebServiceWorkerError::ErrorType error_type,
 416     const base::string16& message) {
 417   TRACE_EVENT_ASYNC_STEP_INTO0(
 418       "ServiceWorker",
 419       "ServiceWorkerDispatcher::UnregisterServiceWorker",
 420       request_id,
 421       "OnUnregistrationError");
 422   TRACE_EVENT_ASYNC_END0("ServiceWorker",
 423                          "ServiceWorkerDispatcher::UnregisterServiceWorker",
 424                          request_id);
 425   WebServiceWorkerUnregistrationCallbacks* callbacks =
 426       pending_unregistration_callbacks_.Lookup(request_id);
 427   DCHECK(callbacks);
 428   if (!callbacks)
 429     return;
 430
 431   scoped_ptr<WebServiceWorkerError> error(
 432       new WebServiceWorkerError(error_type, message));
 433   callbacks->onError(error.release());
 434   pending_unregistration_callbacks_.Remove(request_id);
 435 }
 436
 437 void ServiceWorkerDispatcher::OnGetRegistrationError(
 438     int thread_id,
 439     int request_id,
 440     WebServiceWorkerError::ErrorType error_type,
 441     const base::string16& message) {
 442   TRACE_EVENT_ASYNC_STEP_INTO0(
 443       "ServiceWorker",
 444       "ServiceWorkerDispatcher::GetRegistration",
 445       request_id,
 446       "OnGetRegistrationError");
 447   TRACE_EVENT_ASYNC_END0("ServiceWorker",
 448                          "ServiceWorkerDispatcher::GetRegistration",
 449                          request_id);
 450   WebServiceWorkerGetRegistrationCallbacks* callbacks =
 451       pending_get_registration_callbacks_.Lookup(request_id);
 452   DCHECK(callbacks);
 453   if (!callbacks)
 454     return;
 455
 456   scoped_ptr<WebServiceWorkerError> error(
 457       new WebServiceWorkerError(error_type, message));
 458   callbacks->onError(error.release());
 459   pending_get_registration_callbacks_.Remove(request_id);
 460 }
 461
 462 void ServiceWorkerDispatcher::OnServiceWorkerStateChanged(
 463     int thread_id,
 464     int handle_id,
 465     blink::WebServiceWorkerState state) {
 466   TRACE_EVENT2("ServiceWorker",
 467                "ServiceWorkerDispatcher::OnServiceWorkerStateChanged",
 468                "Thread ID", thread_id,
 469                "State", state);
 470   WorkerObjectMap::iterator worker = service_workers_.find(handle_id);
 471   if (worker != service_workers_.end())
 472     worker->second->OnStateChanged(state);
 473
 474   WorkerToProviderMap::iterator provider = worker_to_provider_.find(handle_id);
 475   if (provider != worker_to_provider_.end())
 476     provider->second->OnServiceWorkerStateChanged(handle_id, state);
 477 }
 478
 479 void ServiceWorkerDispatcher::OnSetVersionAttributes(
 480     int thread_id,
 481     int provider_id,
 482     int registration_handle_id,
 483     int changed_mask,
 484     const ServiceWorkerVersionAttributes& attributes) {
 485   TRACE_EVENT1("ServiceWorker",
 486                "ServiceWorkerDispatcher::OnSetVersionAttributes",
 487                "Thread ID", thread_id);
 488   ChangedVersionAttributesMask mask(changed_mask);
 489   if (mask.installing_changed()) {
 490     SetInstallingServiceWorker(provider_id,
 491                                registration_handle_id,
 492                                attributes.installing);
 493   }
 494   if (mask.waiting_changed()) {
 495     SetWaitingServiceWorker(provider_id,
 496                             registration_handle_id,
 497                             attributes.waiting);
 498   }
 499   if (mask.active_changed()) {
 500     SetActiveServiceWorker(provider_id,
 501                            registration_handle_id,
 502                            attributes.active);
 503     SetReadyRegistration(provider_id, registration_handle_id);
 504   }
 505 }
 506
 507 void ServiceWorkerDispatcher::OnUpdateFound(
 508     int thread_id,
 509     const ServiceWorkerRegistrationObjectInfo& info) {
 510   TRACE_EVENT0("ServiceWorker",
 511                "ServiceWorkerDispatcher::OnUpdateFound");
 512   RegistrationObjectMap::iterator found = registrations_.find(info.handle_id);
 513   if (found != registrations_.end())
 514     found->second->OnUpdateFound();
 515 }
 516
 517 void ServiceWorkerDispatcher::SetInstallingServiceWorker(
 518     int provider_id,
 519     int registration_handle_id,
 520     const ServiceWorkerObjectInfo& info) {
 521   ProviderContextMap::iterator provider = provider_contexts_.find(provider_id);
 522   if (provider != provider_contexts_.end() &&
 523       provider->second->registration_handle_id() == registration_handle_id) {
 524     int existing_installing_id = provider->second->installing_handle_id();
 525     if (existing_installing_id != info.handle_id &&
 526         existing_installing_id != kInvalidServiceWorkerHandleId) {
 527       WorkerToProviderMap::iterator associated_provider =
 528           worker_to_provider_.find(existing_installing_id);
 529       DCHECK(associated_provider != worker_to_provider_.end());
 530       DCHECK(associated_provider->second->provider_id() == provider_id);
 531       worker_to_provider_.erase(associated_provider);
 532     }
 533     provider->second->OnSetInstallingServiceWorker(
 534         registration_handle_id, info);
 535     if (info.handle_id != kInvalidServiceWorkerHandleId)
 536       worker_to_provider_[info.handle_id] = provider->second;
 537   }
 538
 539   RegistrationObjectMap::iterator found =
 540       registrations_.find(registration_handle_id);
 541   if (found != registrations_.end()) {
 542     // Populate the .installing field with the new worker object.
 543     found->second->SetInstalling(GetServiceWorker(info, false));
 544   }
 545 }
 546
 547 void ServiceWorkerDispatcher::SetWaitingServiceWorker(
 548     int provider_id,
 549     int registration_handle_id,
 550     const ServiceWorkerObjectInfo& info) {
 551   ProviderContextMap::iterator provider = provider_contexts_.find(provider_id);
 552   if (provider != provider_contexts_.end() &&
 553       provider->second->registration_handle_id() == registration_handle_id) {
 554     int existing_waiting_id = provider->second->waiting_handle_id();
 555     if (existing_waiting_id != info.handle_id &&
 556         existing_waiting_id != kInvalidServiceWorkerHandleId) {
 557       WorkerToProviderMap::iterator associated_provider =
 558           worker_to_provider_.find(existing_waiting_id);
 559       DCHECK(associated_provider != worker_to_provider_.end());
 560       DCHECK(associated_provider->second->provider_id() == provider_id);
 561       worker_to_provider_.erase(associated_provider);
 562     }
 563     provider->second->OnSetWaitingServiceWorker(registration_handle_id, info);
 564     if (info.handle_id != kInvalidServiceWorkerHandleId)
 565       worker_to_provider_[info.handle_id] = provider->second;
 566   }
 567
 568   RegistrationObjectMap::iterator found =
 569       registrations_.find(registration_handle_id);
 570   if (found != registrations_.end()) {
 571     // Populate the .waiting field with the new worker object.
 572     found->second->SetWaiting(GetServiceWorker(info, false));
 573   }
 574 }
 575
 576 void ServiceWorkerDispatcher::SetActiveServiceWorker(
 577     int provider_id,
 578     int registration_handle_id,
 579     const ServiceWorkerObjectInfo& info) {
 580   ProviderContextMap::iterator provider = provider_contexts_.find(provider_id);
 581   if (provider != provider_contexts_.end() &&
 582       provider->second->registration_handle_id() == registration_handle_id) {
 583     int existing_active_id = provider->second->active_handle_id();
 584     if (existing_active_id != info.handle_id &&
 585         existing_active_id != kInvalidServiceWorkerHandleId) {
 586       WorkerToProviderMap::iterator associated_provider =
 587           worker_to_provider_.find(existing_active_id);
 588       DCHECK(associated_provider != worker_to_provider_.end());
 589       DCHECK(associated_provider->second->provider_id() == provider_id);
 590       worker_to_provider_.erase(associated_provider);
 591     }
 592     provider->second->OnSetActiveServiceWorker(registration_handle_id, info);
 593     if (info.handle_id != kInvalidServiceWorkerHandleId)
 594       worker_to_provider_[info.handle_id] = provider->second;
 595   }
 596
 597   RegistrationObjectMap::iterator found =
 598       registrations_.find(registration_handle_id);
 599   if (found != registrations_.end()) {
 600     // Populate the .active field with the new worker object.
 601     found->second->SetActive(GetServiceWorker(info, false));
 602   }
 603 }
 604
 605 void ServiceWorkerDispatcher::SetReadyRegistration(
 606     int provider_id,
 607     int registration_handle_id) {
 608   ProviderContextMap::iterator provider = provider_contexts_.find(provider_id);
 609   if (provider == provider_contexts_.end() ||
 610       provider->second->registration_handle_id() != registration_handle_id ||
 611       provider->second->active_handle_id() == kInvalidServiceWorkerHandleId) {
 612     return;
 613   }
 614
 615   ScriptClientMap::iterator client = script_clients_.find(provider_id);
 616   if (client == script_clients_.end())
 617     return;
 618
 619   ServiceWorkerRegistrationObjectInfo info =
 620       provider->second->registration()->info();
 621   WebServiceWorkerRegistrationImpl* registration =
 622       FindServiceWorkerRegistration(info, false);
 623   if (!registration) {
 624     registration = CreateServiceWorkerRegistration(info, false);
 625     ServiceWorkerVersionAttributes attrs =
 626         provider->second->GetVersionAttributes();
 627     registration->SetInstalling(GetServiceWorker(attrs.installing, false));
 628     registration->SetWaiting(GetServiceWorker(attrs.waiting, false));
 629     registration->SetActive(GetServiceWorker(attrs.active, false));
 630   }
 631
 632   // Resolve the .ready promise with the registration object.
 633   client->second->setReadyRegistration(registration);
 634 }
 635
 636 void ServiceWorkerDispatcher::OnSetControllerServiceWorker(
 637     int thread_id,
 638     int provider_id,
 639     const ServiceWorkerObjectInfo& info) {
 640   TRACE_EVENT2("ServiceWorker",
 641                "ServiceWorkerDispatcher::OnSetControllerServiceWorker",
 642                "Thread ID", thread_id,
 643                "Provider ID", provider_id);
 644   ProviderContextMap::iterator provider = provider_contexts_.find(provider_id);
 645   if (provider != provider_contexts_.end()) {
 646     provider->second->OnSetControllerServiceWorker(
 647         provider->second->registration_handle_id(), info);
 648     worker_to_provider_[info.handle_id] = provider->second;
 649   }
 650
 651   ScriptClientMap::iterator found = script_clients_.find(provider_id);
 652   if (found != script_clients_.end()) {
 653     // Populate the .controller field with the new worker object.
 654     found->second->setController(GetServiceWorker(info, false));
 655   }
 656 }
 657
 658 void ServiceWorkerDispatcher::OnPostMessage(
 659     int thread_id,
 660     int provider_id,
 661     const base::string16& message,
 662     const std::vector<int>& sent_message_port_ids,
 663     const std::vector<int>& new_routing_ids) {
 664   // Make sure we're on the main document thread. (That must be the only
 665   // thread we get this message)
 666   DCHECK(ChildThread::current());
 667   TRACE_EVENT1("ServiceWorker",
 668                "ServiceWorkerDispatcher::OnPostMessage",
 669                "Thread ID", thread_id);
 670
 671   ScriptClientMap::iterator found = script_clients_.find(provider_id);
 672   if (found == script_clients_.end()) {
 673     // For now we do no queueing for messages sent to nonexistent / unattached
 674     // client.
 675     return;
 676   }
 677
 678   std::vector<WebMessagePortChannelImpl*> ports;
 679   if (!sent_message_port_ids.empty()) {
 680     ports.resize(sent_message_port_ids.size());
 681     for (size_t i = 0; i < sent_message_port_ids.size(); ++i) {
 682       ports[i] = new WebMessagePortChannelImpl(
 683           new_routing_ids[i], sent_message_port_ids[i],
 684           base::MessageLoopProxy::current());
 685     }
 686   }
 687
 688   found->second->dispatchMessageEvent(message, ports);
 689 }
 690
 691 void ServiceWorkerDispatcher::AddServiceWorker(
 692     int handle_id, WebServiceWorkerImpl* worker) {
 693   DCHECK(!ContainsKey(service_workers_, handle_id));
 694   service_workers_[handle_id] = worker;
 695 }
 696
 697 void ServiceWorkerDispatcher::RemoveServiceWorker(int handle_id) {
 698   DCHECK(ContainsKey(service_workers_, handle_id));
 699   service_workers_.erase(handle_id);
 700 }
 701
 702 void ServiceWorkerDispatcher::AddServiceWorkerRegistration(
 703     int registration_handle_id,
 704     WebServiceWorkerRegistrationImpl* registration) {
 705   DCHECK(!ContainsKey(registrations_, registration_handle_id));
 706   registrations_[registration_handle_id] = registration;
 707 }
 708
 709 void ServiceWorkerDispatcher::RemoveServiceWorkerRegistration(
 710     int registration_handle_id) {
 711   DCHECK(ContainsKey(registrations_, registration_handle_id));
 712   registrations_.erase(registration_handle_id);
 713 }
 714
 715 WebServiceWorkerRegistrationImpl*
 716 ServiceWorkerDispatcher::FindOrCreateRegistration(
 717     const ServiceWorkerRegistrationObjectInfo& info,
 718     const ServiceWorkerVersionAttributes& attrs) {
 719   WebServiceWorkerRegistrationImpl* registration =
 720       FindServiceWorkerRegistration(info, true);
 721   if (!registration) {
 722     registration = CreateServiceWorkerRegistration(info, true);
 723     registration->SetInstalling(GetServiceWorker(attrs.installing, true));
 724     registration->SetWaiting(GetServiceWorker(attrs.waiting, true));
 725     registration->SetActive(GetServiceWorker(attrs.active, true));
 726   } else {
 727     // |registration| must already have version attributes, so adopt and destroy
 728     // handle refs for them.
 729     ServiceWorkerHandleReference::Adopt(
 730         attrs.installing, thread_safe_sender_.get());
 731     ServiceWorkerHandleReference::Adopt(
 732         attrs.waiting, thread_safe_sender_.get());
 733     ServiceWorkerHandleReference::Adopt(
 734         attrs.active, thread_safe_sender_.get());
 735   }
 736   return registration;
 737 }
 738
 739 }  // namespace content