content/browser/service_worker/service_worker_version.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/browser/service_worker/service_worker_version.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/memory/ref_counted.h"
   9 #include "base/metrics/histogram_macros.h"
  10 #include "base/stl_util.h"
  11 #include "base/strings/string16.h"
  12 #include "base/strings/utf_string_conversions.h"
  13 #include "base/time/time.h"
  14 #include "content/browser/bad_message.h"
  15 #include "content/browser/child_process_security_policy_impl.h"
  16 #include "content/browser/message_port_message_filter.h"
  17 #include "content/browser/message_port_service.h"
  18 #include "content/browser/service_worker/embedded_worker_instance.h"
  19 #include "content/browser/service_worker/embedded_worker_registry.h"
  20 #include "content/browser/service_worker/service_worker_context_core.h"
  21 #include "content/browser/service_worker/service_worker_context_wrapper.h"
  22 #include "content/browser/service_worker/service_worker_metrics.h"
  23 #include "content/browser/service_worker/service_worker_registration.h"
  24 #include "content/browser/service_worker/service_worker_utils.h"
  25 #include "content/browser/storage_partition_impl.h"
  26 #include "content/common/service_worker/service_worker_messages.h"
  27 #include "content/public/browser/browser_thread.h"
  28 #include "content/public/browser/content_browser_client.h"
  29 #include "content/public/browser/page_navigator.h"
  30 #include "content/public/browser/render_frame_host.h"
  31 #include "content/public/browser/render_process_host.h"
  32 #include "content/public/browser/web_contents.h"
  33 #include "content/public/browser/web_contents_observer.h"
  34 #include "content/public/common/child_process_host.h"
  35 #include "content/public/common/content_client.h"
  36 #include "content/public/common/content_switches.h"
  37 #include "content/public/common/result_codes.h"
  38 #include "net/http/http_response_headers.h"
  39 #include "net/http/http_response_info.h"
  40
  41 namespace content {
  42
  43 using StatusCallback = ServiceWorkerVersion::StatusCallback;
  44 using ServiceWorkerClients = std::vector<ServiceWorkerClientInfo>;
  45 using GetClientsCallback =
  46     base::Callback<void(scoped_ptr<ServiceWorkerClients>)>;
  47
  48 namespace {
  49
  50 // Delay between the timeout timer firing.
  51 const int kTimeoutTimerDelaySeconds = 30;
  52
  53 // Time to wait until stopping an idle worker.
  54 const int kIdleWorkerTimeoutSeconds = 30;
  55
  56 // Default delay for scheduled update.
  57 const int kUpdateDelaySeconds = 1;
  58
  59 // Timeout for waiting for a response to a ping.
  60 const int kPingTimeoutSeconds = 30;
  61
  62 // If the SW was destructed while starting up, how many seconds it
  63 // had to start up for this to be considered a timeout occurrence.
  64 const int kDestructedStartingWorkerTimeoutThresholdSeconds = 5;
  65
  66 const char kClaimClientsStateErrorMesage[] =
  67     "Only the active worker can claim clients.";
  68
  69 const char kClaimClientsShutdownErrorMesage[] =
  70     "Failed to claim clients due to Service Worker system shutdown.";
  71
  72 void RunSoon(const base::Closure& callback) {
  73   if (!callback.is_null())
  74     base::MessageLoop::current()->PostTask(FROM_HERE, callback);
  75 }
  76
  77 template <typename CallbackArray, typename Arg>
  78 void RunCallbacks(ServiceWorkerVersion* version,
  79                   CallbackArray* callbacks_ptr,
  80                   const Arg& arg) {
  81   CallbackArray callbacks;
  82   callbacks.swap(*callbacks_ptr);
  83   scoped_refptr<ServiceWorkerVersion> protect(version);
  84   for (const auto& callback : callbacks)
  85     callback.Run(arg);
  86 }
  87
  88 template <typename IDMAP, typename... Params>
  89 void RunIDMapCallbacks(IDMAP* callbacks, const Params&... params) {
  90   typename IDMAP::iterator iter(callbacks);
  91   while (!iter.IsAtEnd()) {
  92     iter.GetCurrentValue()->Run(params...);
  93     iter.Advance();
  94   }
  95   callbacks->Clear();
  96 }
  97
  98 template <typename CallbackType, typename... Params>
  99 bool RunIDMapCallback(IDMap<CallbackType, IDMapOwnPointer>* callbacks,
 100                       int request_id,
 101                       const Params&... params) {
 102   CallbackType* callback = callbacks->Lookup(request_id);
 103   if (!callback)
 104     return false;
 105
 106   callback->Run(params...);
 107   callbacks->Remove(request_id);
 108   return true;
 109 }
 110
 111 void RunStartWorkerCallback(
 112     const StatusCallback& callback,
 113     scoped_refptr<ServiceWorkerRegistration> protect,
 114     ServiceWorkerStatusCode status) {
 115   callback.Run(status);
 116 }
 117
 118 // A callback adapter to start a |task| after StartWorker.
 119 void RunTaskAfterStartWorker(
 120     base::WeakPtr<ServiceWorkerVersion> version,
 121     const StatusCallback& error_callback,
 122     const base::Closure& task,
 123     ServiceWorkerStatusCode status) {
 124   if (status != SERVICE_WORKER_OK) {
 125     if (!error_callback.is_null())
 126       error_callback.Run(status);
 127     return;
 128   }
 129   if (version->running_status() != ServiceWorkerVersion::RUNNING) {
 130     // We've tried to start the worker (and it has succeeded), but
 131     // it looks it's not running yet.
 132     NOTREACHED() << "The worker's not running after successful StartWorker";
 133     if (!error_callback.is_null())
 134       error_callback.Run(SERVICE_WORKER_ERROR_START_WORKER_FAILED);
 135     return;
 136   }
 137   task.Run();
 138 }
 139
 140 void RunErrorFetchCallback(const ServiceWorkerVersion::FetchCallback& callback,
 141                            ServiceWorkerStatusCode status) {
 142   callback.Run(status,
 143                SERVICE_WORKER_FETCH_EVENT_RESULT_FALLBACK,
 144                ServiceWorkerResponse());
 145 }
 146
 147 void RunErrorMessageCallback(
 148     const std::vector<TransferredMessagePort>& sent_message_ports,
 149     const ServiceWorkerVersion::StatusCallback& callback,
 150     ServiceWorkerStatusCode status) {
 151   // Transfering the message ports failed, so destroy the ports.
 152   for (const TransferredMessagePort& port : sent_message_ports) {
 153     MessagePortService::GetInstance()->ClosePort(port.id);
 154   }
 155   callback.Run(status);
 156 }
 157
 158 void RunErrorCrossOriginConnectCallback(
 159     const ServiceWorkerVersion::CrossOriginConnectCallback& callback,
 160     ServiceWorkerStatusCode status) {
 161   callback.Run(status, false /* accept_connection */);
 162 }
 163
 164 using WindowOpenedCallback = base::Callback<void(int, int)>;
 165
 166 // The WindowOpenedObserver class is a WebContentsObserver that will wait for a
 167 // new Window's WebContents to be initialized, run the |callback| passed to its
 168 // constructor then self destroy.
 169 // The callback will receive the process and frame ids. If something went wrong
 170 // those will be (kInvalidUniqueID, MSG_ROUTING_NONE).
 171 // The callback will be called in the IO thread.
 172 class WindowOpenedObserver : public WebContentsObserver {
 173  public:
 174   WindowOpenedObserver(WebContents* web_contents,
 175                        const WindowOpenedCallback& callback)
 176     : WebContentsObserver(web_contents),
 177       callback_(callback)
 178   {}
 179
 180   void DidCommitProvisionalLoadForFrame(
 181       RenderFrameHost* render_frame_host,
 182       const GURL& validated_url,
 183       ui::PageTransition transition_type) override {
 184     DCHECK(web_contents());
 185
 186     if (render_frame_host != web_contents()->GetMainFrame())
 187       return;
 188
 189     RunCallback(render_frame_host->GetProcess()->GetID(),
 190                 render_frame_host->GetRoutingID());
 191   }
 192
 193   void RenderProcessGone(base::TerminationStatus status) override {
 194     RunCallback(ChildProcessHost::kInvalidUniqueID, MSG_ROUTING_NONE);
 195   }
 196
 197   void WebContentsDestroyed() override {
 198     RunCallback(ChildProcessHost::kInvalidUniqueID, MSG_ROUTING_NONE);
 199   }
 200
 201  private:
 202   void RunCallback(int render_process_id, int render_frame_id) {
 203     // After running the callback, |this| will stop observing, thus
 204     // web_contents() should return nullptr and |RunCallback| should no longer
 205     // be called. Then, |this| will self destroy.
 206     DCHECK(web_contents());
 207
 208     BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
 209                             base::Bind(callback_,
 210                                        render_process_id,
 211                                        render_frame_id));
 212     Observe(nullptr);
 213     base::MessageLoop::current()->DeleteSoon(FROM_HERE, this);
 214   }
 215
 216   const WindowOpenedCallback callback_;
 217
 218   DISALLOW_COPY_AND_ASSIGN(WindowOpenedObserver);
 219 };
 220
 221 void DidOpenURL(const WindowOpenedCallback& callback,
 222                 WebContents* web_contents) {
 223   DCHECK(web_contents);
 224
 225   new WindowOpenedObserver(web_contents, callback);
 226 }
 227
 228 void OpenWindowOnUI(
 229     const GURL& url,
 230     const GURL& script_url,
 231     int process_id,
 232     const scoped_refptr<ServiceWorkerContextWrapper>& context_wrapper,
 233     const WindowOpenedCallback& callback) {
 234   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 235
 236   BrowserContext* browser_context = context_wrapper->storage_partition()
 237       ? context_wrapper->storage_partition()->browser_context()
 238       : nullptr;
 239   // We are shutting down.
 240   if (!browser_context)
 241     return;
 242
 243   RenderProcessHost* render_process_host =
 244       RenderProcessHost::FromID(process_id);
 245   if (render_process_host->IsIsolatedGuest()) {
 246     BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
 247                             base::Bind(callback,
 248                                        ChildProcessHost::kInvalidUniqueID,
 249                                        MSG_ROUTING_NONE));
 250     return;
 251   }
 252
 253   OpenURLParams params(
 254       url, Referrer::SanitizeForRequest(
 255                url, Referrer(script_url, blink::WebReferrerPolicyDefault)),
 256       NEW_FOREGROUND_TAB, ui::PAGE_TRANSITION_AUTO_TOPLEVEL,
 257       true /* is_renderer_initiated */);
 258
 259   GetContentClient()->browser()->OpenURL(
 260       browser_context, params,
 261       base::Bind(&DidOpenURL, callback));
 262 }
 263
 264 void KillEmbeddedWorkerProcess(int process_id, ResultCode code) {
 265   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 266   RenderProcessHost* render_process_host =
 267       RenderProcessHost::FromID(process_id);
 268   if (render_process_host->GetHandle() != base::kNullProcessHandle) {
 269     bad_message::ReceivedBadMessage(render_process_host,
 270                                     bad_message::SERVICE_WORKER_BAD_URL);
 271   }
 272 }
 273
 274 void ClearTick(base::TimeTicks* time) {
 275   *time = base::TimeTicks();
 276 }
 277
 278 void RestartTick(base::TimeTicks* time) {
 279   *time = base::TimeTicks().Now();
 280 }
 281
 282 base::TimeDelta GetTickDuration(const base::TimeTicks& time) {
 283   if (time.is_null())
 284     return base::TimeDelta();
 285   return base::TimeTicks().Now() - time;
 286 }
 287
 288 void OnGetWindowClientsFromUI(
 289     // The tuple contains process_id, frame_id, client_uuid.
 290     const std::vector<Tuple<int, int, std::string>>& clients_info,
 291     const GURL& script_url,
 292     const GetClientsCallback& callback) {
 293   scoped_ptr<ServiceWorkerClients> clients(new ServiceWorkerClients);
 294
 295   for (const auto& it : clients_info) {
 296     ServiceWorkerClientInfo info =
 297         ServiceWorkerProviderHost::GetWindowClientInfoOnUI(get<0>(it),
 298                                                            get<1>(it));
 299
 300     // If the request to the provider_host returned an empty
 301     // ServiceWorkerClientInfo, that means that it wasn't possible to associate
 302     // it with a valid RenderFrameHost. It might be because the frame was killed
 303     // or navigated in between.
 304     if (info.IsEmpty())
 305       continue;
 306
 307     // We can get info for a frame that was navigating end ended up with a
 308     // different URL than expected. In such case, we should make sure to not
 309     // expose cross-origin WindowClient.
 310     if (info.url.GetOrigin() != script_url.GetOrigin())
 311       continue;
 312
 313     info.client_uuid = get<2>(it);
 314     clients->push_back(info);
 315   }
 316
 317   BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
 318                           base::Bind(callback, base::Passed(&clients)));
 319 }
 320
 321 void AddWindowClient(ServiceWorkerProviderHost* host,
 322                      std::vector<Tuple<int, int, std::string>>* client_info) {
 323   if (host->client_type() != blink::WebServiceWorkerClientTypeWindow)
 324     return;
 325   client_info->push_back(
 326       MakeTuple(host->process_id(), host->frame_id(), host->client_uuid()));
 327 }
 328
 329 void AddNonWindowClient(ServiceWorkerProviderHost* host,
 330                         const ServiceWorkerClientQueryOptions& options,
 331                         ServiceWorkerClients* clients) {
 332   blink::WebServiceWorkerClientType host_client_type = host->client_type();
 333   if (host_client_type == blink::WebServiceWorkerClientTypeWindow)
 334     return;
 335   if (options.client_type != blink::WebServiceWorkerClientTypeAll &&
 336       options.client_type != host_client_type)
 337     return;
 338
 339   ServiceWorkerClientInfo client_info(
 340       blink::WebPageVisibilityStateHidden,
 341       false,  // is_focused
 342       host->document_url(), REQUEST_CONTEXT_FRAME_TYPE_NONE, host_client_type);
 343   client_info.client_uuid = host->client_uuid();
 344   clients->push_back(client_info);
 345 }
 346
 347 bool IsInstalled(ServiceWorkerVersion::Status status) {
 348   switch (status) {
 349     case ServiceWorkerVersion::NEW:
 350     case ServiceWorkerVersion::INSTALLING:
 351     case ServiceWorkerVersion::REDUNDANT:
 352       return false;
 353     case ServiceWorkerVersion::INSTALLED:
 354     case ServiceWorkerVersion::ACTIVATING:
 355     case ServiceWorkerVersion::ACTIVATED:
 356       return true;
 357   }
 358   NOTREACHED() << "Unexpected status: " << status;
 359   return false;
 360 }
 361
 362 }  // namespace
 363
 364 const int ServiceWorkerVersion::kStartWorkerTimeoutMinutes = 5;
 365 const int ServiceWorkerVersion::kRequestTimeoutMinutes = 5;
 366
 367 ServiceWorkerVersion::ServiceWorkerVersion(
 368     ServiceWorkerRegistration* registration,
 369     const GURL& script_url,
 370     int64 version_id,
 371     base::WeakPtr<ServiceWorkerContextCore> context)
 372     : version_id_(version_id),
 373       registration_id_(kInvalidServiceWorkerVersionId),
 374       script_url_(script_url),
 375       status_(NEW),
 376       context_(context),
 377       script_cache_map_(this, context),
 378       ping_state_(NOT_PINGING),
 379       weak_factory_(this) {
 380   DCHECK(context_);
 381   DCHECK(registration);
 382   if (registration) {
 383     registration_id_ = registration->id();
 384     scope_ = registration->pattern();
 385   }
 386   context_->AddLiveVersion(this);
 387   embedded_worker_ = context_->embedded_worker_registry()->CreateWorker();
 388   embedded_worker_->AddListener(this);
 389 }
 390
 391 ServiceWorkerVersion::~ServiceWorkerVersion() {
 392   // The user may have closed the tab waiting for SW to start up.
 393   if (GetTickDuration(start_time_) >
 394       base::TimeDelta::FromSeconds(
 395           kDestructedStartingWorkerTimeoutThresholdSeconds)) {
 396     DCHECK(timeout_timer_.IsRunning());
 397     DCHECK(!embedded_worker_->devtools_attached());
 398     RecordStartWorkerResult(SERVICE_WORKER_ERROR_TIMEOUT);
 399   }
 400
 401   embedded_worker_->RemoveListener(this);
 402   if (context_)
 403     context_->RemoveLiveVersion(version_id_);
 404   // EmbeddedWorker's dtor sends StopWorker if it's still running.
 405 }
 406
 407 void ServiceWorkerVersion::SetStatus(Status status) {
 408   if (status_ == status)
 409     return;
 410
 411   status_ = status;
 412
 413   if (skip_waiting_ && status_ == ACTIVATED) {
 414     for (int request_id : pending_skip_waiting_requests_)
 415       DidSkipWaiting(request_id);
 416     pending_skip_waiting_requests_.clear();
 417   }
 418
 419   std::vector<base::Closure> callbacks;
 420   callbacks.swap(status_change_callbacks_);
 421   for (const auto& callback : callbacks)
 422     callback.Run();
 423
 424   FOR_EACH_OBSERVER(Listener, listeners_, OnVersionStateChanged(this));
 425 }
 426
 427 void ServiceWorkerVersion::RegisterStatusChangeCallback(
 428     const base::Closure& callback) {
 429   status_change_callbacks_.push_back(callback);
 430 }
 431
 432 ServiceWorkerVersionInfo ServiceWorkerVersion::GetInfo() {
 433   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 434   ServiceWorkerVersionInfo info(
 435       running_status(), status(), script_url(), registration_id(), version_id(),
 436       embedded_worker()->process_id(), embedded_worker()->thread_id(),
 437       embedded_worker()->worker_devtools_agent_route_id());
 438   if (!main_script_http_info_)
 439     return info;
 440   info.script_response_time = main_script_http_info_->response_time;
 441   if (main_script_http_info_->headers)
 442     main_script_http_info_->headers->GetLastModifiedValue(
 443         &info.script_last_modified);
 444   return info;
 445 }
 446
 447 void ServiceWorkerVersion::StartWorker(const StatusCallback& callback) {
 448   StartWorker(false, callback);
 449 }
 450
 451 void ServiceWorkerVersion::StartWorker(
 452     bool pause_after_download,
 453     const StatusCallback& callback) {
 454   if (!context_) {
 455     RunSoon(base::Bind(callback, SERVICE_WORKER_ERROR_ABORT));
 456     return;
 457   }
 458
 459   // Ensure the live registration during starting worker so that the worker can
 460   // get associated with it in SWDispatcherHost::OnSetHostedVersionId().
 461   context_->storage()->FindRegistrationForId(
 462       registration_id_,
 463       scope_.GetOrigin(),
 464       base::Bind(&ServiceWorkerVersion::DidEnsureLiveRegistrationForStartWorker,
 465                  weak_factory_.GetWeakPtr(),
 466                  pause_after_download,
 467                  callback));
 468 }
 469
 470 void ServiceWorkerVersion::StopWorker(const StatusCallback& callback) {
 471   if (running_status() == STOPPED) {
 472     RunSoon(base::Bind(callback, SERVICE_WORKER_OK));
 473     return;
 474   }
 475   if (stop_callbacks_.empty()) {
 476     ServiceWorkerStatusCode status = embedded_worker_->Stop();
 477     if (status != SERVICE_WORKER_OK) {
 478       RunSoon(base::Bind(callback, status));
 479       return;
 480     }
 481   }
 482   stop_callbacks_.push_back(callback);
 483 }
 484
 485 void ServiceWorkerVersion::ScheduleUpdate() {
 486   if (update_timer_.IsRunning()) {
 487     update_timer_.Reset();
 488     return;
 489   }
 490   update_timer_.Start(
 491       FROM_HERE, base::TimeDelta::FromSeconds(kUpdateDelaySeconds),
 492       base::Bind(&ServiceWorkerVersion::StartUpdate,
 493                  weak_factory_.GetWeakPtr()));
 494 }
 495
 496 void ServiceWorkerVersion::DeferScheduledUpdate() {
 497   if (update_timer_.IsRunning())
 498     update_timer_.Reset();
 499 }
 500
 501 void ServiceWorkerVersion::StartUpdate() {
 502   update_timer_.Stop();
 503   if (!context_)
 504     return;
 505   ServiceWorkerRegistration* registration =
 506       context_->GetLiveRegistration(registration_id_);
 507   if (!registration || !registration->GetNewestVersion())
 508     return;
 509   context_->UpdateServiceWorker(registration, false /* force_bypass_cache */);
 510 }
 511
 512 void ServiceWorkerVersion::DispatchMessageEvent(
 513     const base::string16& message,
 514     const std::vector<TransferredMessagePort>& sent_message_ports,
 515     const StatusCallback& callback) {
 516   for (const TransferredMessagePort& port : sent_message_ports) {
 517     MessagePortService::GetInstance()->HoldMessages(port.id);
 518   }
 519
 520   DispatchMessageEventInternal(message, sent_message_ports, callback);
 521 }
 522
 523 void ServiceWorkerVersion::DispatchMessageEventInternal(
 524     const base::string16& message,
 525     const std::vector<TransferredMessagePort>& sent_message_ports,
 526     const StatusCallback& callback) {
 527   if (running_status() != RUNNING) {
 528     // Schedule calling this method after starting the worker.
 529     StartWorker(base::Bind(
 530         &RunTaskAfterStartWorker, weak_factory_.GetWeakPtr(),
 531         base::Bind(&RunErrorMessageCallback, sent_message_ports, callback),
 532         base::Bind(&self::DispatchMessageEventInternal,
 533                    weak_factory_.GetWeakPtr(), message, sent_message_ports,
 534                    callback)));
 535     return;
 536   }
 537
 538   MessagePortMessageFilter* filter =
 539       embedded_worker_->message_port_message_filter();
 540   std::vector<int> new_routing_ids;
 541   filter->UpdateMessagePortsWithNewRoutes(sent_message_ports, &new_routing_ids);
 542   ServiceWorkerStatusCode status =
 543       embedded_worker_->SendMessage(ServiceWorkerMsg_MessageToWorker(
 544           message, sent_message_ports, new_routing_ids));
 545   RunSoon(base::Bind(callback, status));
 546 }
 547
 548 void ServiceWorkerVersion::DispatchInstallEvent(
 549     const StatusCallback& callback) {
 550   DCHECK_EQ(INSTALLING, status()) << status();
 551
 552   if (running_status() != RUNNING) {
 553     // Schedule calling this method after starting the worker.
 554     StartWorker(
 555         base::Bind(&RunTaskAfterStartWorker,
 556                    weak_factory_.GetWeakPtr(),
 557                    callback,
 558                    base::Bind(&self::DispatchInstallEventAfterStartWorker,
 559                               weak_factory_.GetWeakPtr(),
 560                               callback)));
 561   } else {
 562     DispatchInstallEventAfterStartWorker(callback);
 563   }
 564 }
 565
 566 void ServiceWorkerVersion::DispatchActivateEvent(
 567     const StatusCallback& callback) {
 568   DCHECK_EQ(ACTIVATING, status()) << status();
 569
 570   if (running_status() != RUNNING) {
 571     // Schedule calling this method after starting the worker.
 572     StartWorker(
 573         base::Bind(&RunTaskAfterStartWorker,
 574                    weak_factory_.GetWeakPtr(),
 575                    callback,
 576                    base::Bind(&self::DispatchActivateEventAfterStartWorker,
 577                               weak_factory_.GetWeakPtr(),
 578                               callback)));
 579   } else {
 580     DispatchActivateEventAfterStartWorker(callback);
 581   }
 582 }
 583
 584 void ServiceWorkerVersion::DispatchFetchEvent(
 585     const ServiceWorkerFetchRequest& request,
 586     const base::Closure& prepare_callback,
 587     const FetchCallback& fetch_callback) {
 588   DCHECK_EQ(ACTIVATED, status()) << status();
 589
 590   if (running_status() != RUNNING) {
 591     // Schedule calling this method after starting the worker.
 592     StartWorker(base::Bind(&RunTaskAfterStartWorker,
 593                            weak_factory_.GetWeakPtr(),
 594                            base::Bind(&RunErrorFetchCallback, fetch_callback),
 595                            base::Bind(&self::DispatchFetchEvent,
 596                                       weak_factory_.GetWeakPtr(),
 597                                       request,
 598                                       prepare_callback,
 599                                       fetch_callback)));
 600     return;
 601   }
 602
 603   prepare_callback.Run();
 604
 605   int request_id = AddRequest(fetch_callback, &fetch_callbacks_, REQUEST_FETCH);
 606   ServiceWorkerStatusCode status = embedded_worker_->SendMessage(
 607       ServiceWorkerMsg_FetchEvent(request_id, request));
 608   if (status != SERVICE_WORKER_OK) {
 609     fetch_callbacks_.Remove(request_id);
 610     RunSoon(base::Bind(&RunErrorFetchCallback,
 611                        fetch_callback,
 612                        SERVICE_WORKER_ERROR_FAILED));
 613   }
 614 }
 615
 616 void ServiceWorkerVersion::DispatchSyncEvent(const StatusCallback& callback) {
 617   DCHECK_EQ(ACTIVATED, status()) << status();
 618
 619   if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
 620           switches::kEnableServiceWorkerSync)) {
 621     callback.Run(SERVICE_WORKER_ERROR_ABORT);
 622     return;
 623   }
 624
 625   if (running_status() != RUNNING) {
 626     // Schedule calling this method after starting the worker.
 627     StartWorker(base::Bind(&RunTaskAfterStartWorker,
 628                            weak_factory_.GetWeakPtr(), callback,
 629                            base::Bind(&self::DispatchSyncEvent,
 630                                       weak_factory_.GetWeakPtr(),
 631                                       callback)));
 632     return;
 633   }
 634
 635   int request_id = AddRequest(callback, &sync_callbacks_, REQUEST_SYNC);
 636   ServiceWorkerStatusCode status = embedded_worker_->SendMessage(
 637       ServiceWorkerMsg_SyncEvent(request_id));
 638   if (status != SERVICE_WORKER_OK) {
 639     sync_callbacks_.Remove(request_id);
 640     RunSoon(base::Bind(callback, status));
 641   }
 642 }
 643
 644 void ServiceWorkerVersion::DispatchNotificationClickEvent(
 645     const StatusCallback& callback,
 646     int64_t persistent_notification_id,
 647     const PlatformNotificationData& notification_data) {
 648   DCHECK_EQ(ACTIVATED, status()) << status();
 649   if (running_status() != RUNNING) {
 650     // Schedule calling this method after starting the worker.
 651     StartWorker(base::Bind(
 652         &RunTaskAfterStartWorker, weak_factory_.GetWeakPtr(), callback,
 653         base::Bind(&self::DispatchNotificationClickEvent,
 654                    weak_factory_.GetWeakPtr(), callback,
 655                    persistent_notification_id, notification_data)));
 656     return;
 657   }
 658
 659   int request_id = AddRequest(callback, &notification_click_callbacks_,
 660                               REQUEST_NOTIFICATION_CLICK);
 661   ServiceWorkerStatusCode status =
 662       embedded_worker_->SendMessage(ServiceWorkerMsg_NotificationClickEvent(
 663           request_id, persistent_notification_id, notification_data));
 664   if (status != SERVICE_WORKER_OK) {
 665     notification_click_callbacks_.Remove(request_id);
 666     RunSoon(base::Bind(callback, status));
 667   }
 668 }
 669
 670 void ServiceWorkerVersion::DispatchPushEvent(const StatusCallback& callback,
 671                                              const std::string& data) {
 672   DCHECK_EQ(ACTIVATED, status()) << status();
 673   if (running_status() != RUNNING) {
 674     // Schedule calling this method after starting the worker.
 675     StartWorker(base::Bind(&RunTaskAfterStartWorker,
 676                            weak_factory_.GetWeakPtr(), callback,
 677                            base::Bind(&self::DispatchPushEvent,
 678                                       weak_factory_.GetWeakPtr(),
 679                                       callback, data)));
 680     return;
 681   }
 682
 683   int request_id = AddRequest(callback, &push_callbacks_, REQUEST_PUSH);
 684   ServiceWorkerStatusCode status = embedded_worker_->SendMessage(
 685       ServiceWorkerMsg_PushEvent(request_id, data));
 686   if (status != SERVICE_WORKER_OK) {
 687     push_callbacks_.Remove(request_id);
 688     RunSoon(base::Bind(callback, status));
 689   }
 690 }
 691
 692 void ServiceWorkerVersion::DispatchGeofencingEvent(
 693     const StatusCallback& callback,
 694     blink::WebGeofencingEventType event_type,
 695     const std::string& region_id,
 696     const blink::WebCircularGeofencingRegion& region) {
 697   DCHECK_EQ(ACTIVATED, status()) << status();
 698
 699   if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
 700           switches::kEnableExperimentalWebPlatformFeatures)) {
 701     callback.Run(SERVICE_WORKER_ERROR_ABORT);
 702     return;
 703   }
 704
 705   if (running_status() != RUNNING) {
 706     // Schedule calling this method after starting the worker.
 707     StartWorker(base::Bind(&RunTaskAfterStartWorker,
 708                            weak_factory_.GetWeakPtr(),
 709                            callback,
 710                            base::Bind(&self::DispatchGeofencingEvent,
 711                                       weak_factory_.GetWeakPtr(),
 712                                       callback,
 713                                       event_type,
 714                                       region_id,
 715                                       region)));
 716     return;
 717   }
 718
 719   int request_id =
 720       AddRequest(callback, &geofencing_callbacks_, REQUEST_GEOFENCING);
 721   ServiceWorkerStatusCode status =
 722       embedded_worker_->SendMessage(ServiceWorkerMsg_GeofencingEvent(
 723           request_id, event_type, region_id, region));
 724   if (status != SERVICE_WORKER_OK) {
 725     geofencing_callbacks_.Remove(request_id);
 726     RunSoon(base::Bind(callback, status));
 727   }
 728 }
 729
 730 void ServiceWorkerVersion::DispatchCrossOriginConnectEvent(
 731     const CrossOriginConnectCallback& callback,
 732     const NavigatorConnectClient& client) {
 733   DCHECK_EQ(ACTIVATED, status()) << status();
 734
 735   if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
 736           switches::kEnableExperimentalWebPlatformFeatures)) {
 737     callback.Run(SERVICE_WORKER_ERROR_ABORT, false);
 738     return;
 739   }
 740
 741   if (running_status() != RUNNING) {
 742     // Schedule calling this method after starting the worker.
 743     StartWorker(
 744         base::Bind(&RunTaskAfterStartWorker, weak_factory_.GetWeakPtr(),
 745                    base::Bind(&RunErrorCrossOriginConnectCallback, callback),
 746                    base::Bind(&self::DispatchCrossOriginConnectEvent,
 747                               weak_factory_.GetWeakPtr(), callback, client)));
 748     return;
 749   }
 750
 751   int request_id = AddRequest(callback, &cross_origin_connect_callbacks_,
 752                               REQUEST_CROSS_ORIGIN_CONNECT);
 753   ServiceWorkerStatusCode status = embedded_worker_->SendMessage(
 754       ServiceWorkerMsg_CrossOriginConnectEvent(request_id, client));
 755   if (status != SERVICE_WORKER_OK) {
 756     cross_origin_connect_callbacks_.Remove(request_id);
 757     RunSoon(base::Bind(callback, status, false));
 758   }
 759 }
 760
 761 void ServiceWorkerVersion::DispatchCrossOriginMessageEvent(
 762     const NavigatorConnectClient& client,
 763     const base::string16& message,
 764     const std::vector<TransferredMessagePort>& sent_message_ports,
 765     const StatusCallback& callback) {
 766   // Unlike in the case of DispatchMessageEvent, here the caller is assumed to
 767   // have already put all the sent message ports on hold. So no need to do that
 768   // here again.
 769
 770   if (running_status() != RUNNING) {
 771     // Schedule calling this method after starting the worker.
 772     StartWorker(base::Bind(
 773         &RunTaskAfterStartWorker, weak_factory_.GetWeakPtr(),
 774         base::Bind(&RunErrorMessageCallback, sent_message_ports, callback),
 775         base::Bind(&self::DispatchCrossOriginMessageEvent,
 776                    weak_factory_.GetWeakPtr(), client, message,
 777                    sent_message_ports, callback)));
 778     return;
 779   }
 780
 781   MessagePortMessageFilter* filter =
 782       embedded_worker_->message_port_message_filter();
 783   std::vector<int> new_routing_ids;
 784   filter->UpdateMessagePortsWithNewRoutes(sent_message_ports, &new_routing_ids);
 785   ServiceWorkerStatusCode status =
 786       embedded_worker_->SendMessage(ServiceWorkerMsg_CrossOriginMessageToWorker(
 787           client, message, sent_message_ports, new_routing_ids));
 788   RunSoon(base::Bind(callback, status));
 789 }
 790
 791 void ServiceWorkerVersion::AddControllee(
 792     ServiceWorkerProviderHost* provider_host) {
 793   const std::string& uuid = provider_host->client_uuid();
 794   CHECK(!provider_host->client_uuid().empty());
 795   DCHECK(!ContainsKey(controllee_map_, uuid));
 796   controllee_map_[uuid] = provider_host;
 797   // Keep the worker alive a bit longer right after a new controllee is added.
 798   RestartTick(&idle_time_);
 799 }
 800
 801 void ServiceWorkerVersion::RemoveControllee(
 802     ServiceWorkerProviderHost* provider_host) {
 803   const std::string& uuid = provider_host->client_uuid();
 804   DCHECK(ContainsKey(controllee_map_, uuid));
 805   controllee_map_.erase(uuid);
 806   if (HasControllee())
 807     return;
 808   FOR_EACH_OBSERVER(Listener, listeners_, OnNoControllees(this));
 809 }
 810
 811 void ServiceWorkerVersion::AddStreamingURLRequestJob(
 812     const ServiceWorkerURLRequestJob* request_job) {
 813   DCHECK(streaming_url_request_jobs_.find(request_job) ==
 814          streaming_url_request_jobs_.end());
 815   streaming_url_request_jobs_.insert(request_job);
 816 }
 817
 818 void ServiceWorkerVersion::RemoveStreamingURLRequestJob(
 819     const ServiceWorkerURLRequestJob* request_job) {
 820   streaming_url_request_jobs_.erase(request_job);
 821   if (is_redundant())
 822     StopWorkerIfIdle();
 823 }
 824
 825 void ServiceWorkerVersion::AddListener(Listener* listener) {
 826   listeners_.AddObserver(listener);
 827 }
 828
 829 void ServiceWorkerVersion::RemoveListener(Listener* listener) {
 830   listeners_.RemoveObserver(listener);
 831 }
 832
 833 void ServiceWorkerVersion::ReportError(ServiceWorkerStatusCode status,
 834                                        const std::string& status_message) {
 835   if (status_message.empty()) {
 836     OnReportException(base::UTF8ToUTF16(ServiceWorkerStatusToString(status)),
 837                       -1, -1, GURL());
 838   } else {
 839     OnReportException(base::UTF8ToUTF16(status_message), -1, -1, GURL());
 840   }
 841 }
 842
 843 void ServiceWorkerVersion::Doom() {
 844   DCHECK(!HasControllee());
 845   SetStatus(REDUNDANT);
 846   StopWorkerIfIdle();
 847   if (!context_)
 848     return;
 849   std::vector<ServiceWorkerDatabase::ResourceRecord> resources;
 850   script_cache_map_.GetResources(&resources);
 851   context_->storage()->PurgeResources(resources);
 852 }
 853
 854 void ServiceWorkerVersion::SetDevToolsAttached(bool attached) {
 855   embedded_worker()->set_devtools_attached(attached);
 856   if (attached) {
 857     // TODO(falken): Canceling the timeouts when debugging could cause
 858     // heisenbugs; we should instead run them as normal show an educational
 859     // message in DevTools when they occur. crbug.com/470419
 860
 861     // Don't record the startup time metric once DevTools is attached.
 862     ClearTick(&start_time_);
 863     skip_recording_startup_time_ = true;
 864
 865     // Cancel request timeouts.
 866     SetAllRequestTimes(base::TimeTicks());
 867     return;
 868   }
 869   if (!start_callbacks_.empty()) {
 870     // Reactivate the timer for start timeout.
 871     DCHECK(timeout_timer_.IsRunning());
 872     DCHECK(running_status() == STARTING || running_status() == STOPPING)
 873         << running_status();
 874     RestartTick(&start_time_);
 875   }
 876
 877   // Reactivate request timeouts.
 878   SetAllRequestTimes(base::TimeTicks::Now());
 879 }
 880
 881 void ServiceWorkerVersion::SetMainScriptHttpResponseInfo(
 882     const net::HttpResponseInfo& http_info) {
 883   main_script_http_info_.reset(new net::HttpResponseInfo(http_info));
 884   FOR_EACH_OBSERVER(Listener, listeners_,
 885                     OnMainScriptHttpResponseInfoSet(this));
 886 }
 887
 888 const net::HttpResponseInfo*
 889 ServiceWorkerVersion::GetMainScriptHttpResponseInfo() {
 890   return main_script_http_info_.get();
 891 }
 892
 893 ServiceWorkerVersion::RequestInfo::RequestInfo(int id, RequestType type)
 894     : id(id), type(type), time(base::TimeTicks::Now()) {
 895 }
 896
 897 ServiceWorkerVersion::RequestInfo::~RequestInfo() {
 898 }
 899
 900 void ServiceWorkerVersion::OnScriptLoaded() {
 901   DCHECK_EQ(STARTING, running_status());
 902   // Activate ping/pong now that JavaScript execution will start.
 903   ping_state_ = PINGING;
 904 }
 905
 906 void ServiceWorkerVersion::OnStarting() {
 907   FOR_EACH_OBSERVER(Listener, listeners_, OnRunningStateChanged(this));
 908 }
 909
 910 void ServiceWorkerVersion::OnStarted() {
 911   DCHECK_EQ(RUNNING, running_status());
 912   RestartTick(&idle_time_);
 913
 914   // Fire all start callbacks.
 915   scoped_refptr<ServiceWorkerVersion> protect(this);
 916   RunCallbacks(this, &start_callbacks_, SERVICE_WORKER_OK);
 917   FOR_EACH_OBSERVER(Listener, listeners_, OnRunningStateChanged(this));
 918 }
 919
 920 void ServiceWorkerVersion::OnStopping() {
 921   FOR_EACH_OBSERVER(Listener, listeners_, OnRunningStateChanged(this));
 922 }
 923
 924 void ServiceWorkerVersion::OnStopped(
 925     EmbeddedWorkerInstance::Status old_status) {
 926   DCHECK_EQ(STOPPED, running_status());
 927   scoped_refptr<ServiceWorkerVersion> protect(this);
 928
 929   bool should_restart = !is_redundant() && !start_callbacks_.empty() &&
 930                         (old_status != EmbeddedWorkerInstance::STARTING);
 931
 932   StopTimeoutTimer();
 933   if (ping_state_ == PING_TIMED_OUT)
 934     should_restart = false;
 935
 936   // Fire all stop callbacks.
 937   RunCallbacks(this, &stop_callbacks_, SERVICE_WORKER_OK);
 938
 939   if (!should_restart) {
 940     // Let all start callbacks fail.
 941     RunCallbacks(this, &start_callbacks_,
 942                  DeduceStartWorkerFailureReason(
 943                      SERVICE_WORKER_ERROR_START_WORKER_FAILED));
 944   }
 945
 946   // Let all message callbacks fail (this will also fire and clear all
 947   // callbacks for events).
 948   // TODO(kinuko): Consider if we want to add queue+resend mechanism here.
 949   RunIDMapCallbacks(&activate_callbacks_,
 950                     SERVICE_WORKER_ERROR_ACTIVATE_WORKER_FAILED);
 951   RunIDMapCallbacks(&install_callbacks_,
 952                     SERVICE_WORKER_ERROR_INSTALL_WORKER_FAILED);
 953   RunIDMapCallbacks(&fetch_callbacks_,
 954                     SERVICE_WORKER_ERROR_FAILED,
 955                     SERVICE_WORKER_FETCH_EVENT_RESULT_FALLBACK,
 956                     ServiceWorkerResponse());
 957   RunIDMapCallbacks(&sync_callbacks_,
 958                     SERVICE_WORKER_ERROR_FAILED);
 959   RunIDMapCallbacks(&notification_click_callbacks_,
 960                     SERVICE_WORKER_ERROR_FAILED);
 961   RunIDMapCallbacks(&push_callbacks_,
 962                     SERVICE_WORKER_ERROR_FAILED);
 963   RunIDMapCallbacks(&geofencing_callbacks_,
 964                     SERVICE_WORKER_ERROR_FAILED);
 965   RunIDMapCallbacks(&cross_origin_connect_callbacks_,
 966                     SERVICE_WORKER_ERROR_FAILED,
 967                     false);
 968
 969   streaming_url_request_jobs_.clear();
 970
 971   FOR_EACH_OBSERVER(Listener, listeners_, OnRunningStateChanged(this));
 972
 973   if (should_restart)
 974     StartWorkerInternal(false /* pause_after_download */);
 975 }
 976
 977 void ServiceWorkerVersion::OnReportException(
 978     const base::string16& error_message,
 979     int line_number,
 980     int column_number,
 981     const GURL& source_url) {
 982   FOR_EACH_OBSERVER(
 983       Listener,
 984       listeners_,
 985       OnErrorReported(
 986           this, error_message, line_number, column_number, source_url));
 987 }
 988
 989 void ServiceWorkerVersion::OnReportConsoleMessage(int source_identifier,
 990                                                   int message_level,
 991                                                   const base::string16& message,
 992                                                   int line_number,
 993                                                   const GURL& source_url) {
 994   FOR_EACH_OBSERVER(Listener,
 995                     listeners_,
 996                     OnReportConsoleMessage(this,
 997                                            source_identifier,
 998                                            message_level,
 999                                            message,
1000                                            line_number,
1001                                            source_url));
1002 }
1003
1004 bool ServiceWorkerVersion::OnMessageReceived(const IPC::Message& message) {
1005   bool handled = true;
1006   IPC_BEGIN_MESSAGE_MAP(ServiceWorkerVersion, message)
1007     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_GetClients,
1008                         OnGetClients)
1009     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_ActivateEventFinished,
1010                         OnActivateEventFinished)
1011     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_InstallEventFinished,
1012                         OnInstallEventFinished)
1013     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_FetchEventFinished,
1014                         OnFetchEventFinished)
1015     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_SyncEventFinished,
1016                         OnSyncEventFinished)
1017     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_NotificationClickEventFinished,
1018                         OnNotificationClickEventFinished)
1019     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_PushEventFinished,
1020                         OnPushEventFinished)
1021     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_GeofencingEventFinished,
1022                         OnGeofencingEventFinished)
1023     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_CrossOriginConnectEventFinished,
1024                         OnCrossOriginConnectEventFinished)
1025     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_OpenWindow,
1026                         OnOpenWindow)
1027     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_SetCachedMetadata,
1028                         OnSetCachedMetadata)
1029     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_ClearCachedMetadata,
1030                         OnClearCachedMetadata)
1031     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_PostMessageToClient,
1032                         OnPostMessageToClient)
1033     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_FocusClient,
1034                         OnFocusClient)
1035     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_SkipWaiting,
1036                         OnSkipWaiting)
1037     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_ClaimClients,
1038                         OnClaimClients)
1039     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_Pong, OnPongFromWorker)
1040     IPC_MESSAGE_UNHANDLED(handled = false)
1041   IPC_END_MESSAGE_MAP()
1042   return handled;
1043 }
1044
1045 void ServiceWorkerVersion::OnStartSentAndScriptEvaluated(
1046     ServiceWorkerStatusCode status) {
1047   if (status != SERVICE_WORKER_OK) {
1048     RunCallbacks(this, &start_callbacks_,
1049                  DeduceStartWorkerFailureReason(status));
1050   }
1051 }
1052
1053 void ServiceWorkerVersion::DispatchInstallEventAfterStartWorker(
1054     const StatusCallback& callback) {
1055   DCHECK_EQ(RUNNING, running_status())
1056       << "Worker stopped too soon after it was started.";
1057
1058   int request_id = AddRequest(callback, &install_callbacks_, REQUEST_INSTALL);
1059   ServiceWorkerStatusCode status = embedded_worker_->SendMessage(
1060       ServiceWorkerMsg_InstallEvent(request_id));
1061   if (status != SERVICE_WORKER_OK) {
1062     install_callbacks_.Remove(request_id);
1063     RunSoon(base::Bind(callback, status));
1064   }
1065 }
1066
1067 void ServiceWorkerVersion::DispatchActivateEventAfterStartWorker(
1068     const StatusCallback& callback) {
1069   DCHECK_EQ(RUNNING, running_status())
1070       << "Worker stopped too soon after it was started.";
1071
1072   int request_id = AddRequest(callback, &activate_callbacks_, REQUEST_ACTIVATE);
1073   ServiceWorkerStatusCode status =
1074       embedded_worker_->SendMessage(ServiceWorkerMsg_ActivateEvent(request_id));
1075   if (status != SERVICE_WORKER_OK) {
1076     activate_callbacks_.Remove(request_id);
1077     RunSoon(base::Bind(callback, status));
1078   }
1079 }
1080
1081 void ServiceWorkerVersion::OnGetClients(
1082     int request_id,
1083     const ServiceWorkerClientQueryOptions& options) {
1084   TRACE_EVENT_ASYNC_BEGIN2(
1085       "ServiceWorker", "ServiceWorkerVersion::OnGetClients", request_id,
1086       "client_type", options.client_type, "include_uncontrolled",
1087       options.include_uncontrolled);
1088
1089   if (controllee_map_.empty() && !options.include_uncontrolled) {
1090     OnGetClientsFinished(request_id, std::vector<ServiceWorkerClientInfo>());
1091     return;
1092   }
1093
1094   // For Window clients we want to query the info on the UI thread first.
1095   if (options.client_type == blink::WebServiceWorkerClientTypeWindow ||
1096       options.client_type == blink::WebServiceWorkerClientTypeAll) {
1097     GetWindowClients(request_id, options);
1098     return;
1099   }
1100
1101   ServiceWorkerClients clients;
1102   GetNonWindowClients(request_id, options, &clients);
1103   OnGetClientsFinished(request_id, clients);
1104 }
1105
1106 void ServiceWorkerVersion::OnGetClientsFinished(
1107     int request_id,
1108     const ServiceWorkerClients& clients) {
1109   DCHECK_CURRENTLY_ON(BrowserThread::IO);
1110   TRACE_EVENT_ASYNC_END1("ServiceWorker", "ServiceWorkerVersion::OnGetClients",
1111                          request_id, "The number of clients", clients.size());
1112
1113   if (running_status() != RUNNING)
1114     return;
1115   embedded_worker_->SendMessage(
1116       ServiceWorkerMsg_DidGetClients(request_id, clients));
1117 }
1118
1119 void ServiceWorkerVersion::OnActivateEventFinished(
1120     int request_id,
1121     blink::WebServiceWorkerEventResult result) {
1122   DCHECK(ACTIVATING == status() ||
1123          REDUNDANT == status()) << status();
1124   TRACE_EVENT0("ServiceWorker",
1125                "ServiceWorkerVersion::OnActivateEventFinished");
1126
1127   StatusCallback* callback = activate_callbacks_.Lookup(request_id);
1128   if (!callback) {
1129     NOTREACHED() << "Got unexpected message: " << request_id;
1130     return;
1131   }
1132   ServiceWorkerStatusCode rv = SERVICE_WORKER_OK;
1133   if (result == blink::WebServiceWorkerEventResultRejected ||
1134       status() != ACTIVATING) {
1135     rv = SERVICE_WORKER_ERROR_ACTIVATE_WORKER_FAILED;
1136   }
1137
1138   scoped_refptr<ServiceWorkerVersion> protect(this);
1139   callback->Run(rv);
1140   RemoveCallbackAndStopIfRedundant(&activate_callbacks_, request_id);
1141 }
1142
1143 void ServiceWorkerVersion::OnInstallEventFinished(
1144     int request_id,
1145     blink::WebServiceWorkerEventResult result) {
1146   // Status is REDUNDANT if the worker was doomed while handling the install
1147   // event, and finished handling before being terminated.
1148   DCHECK(status() == INSTALLING || status() == REDUNDANT) << status();
1149   TRACE_EVENT0("ServiceWorker",
1150                "ServiceWorkerVersion::OnInstallEventFinished");
1151
1152   StatusCallback* callback = install_callbacks_.Lookup(request_id);
1153   if (!callback) {
1154     NOTREACHED() << "Got unexpected message: " << request_id;
1155     return;
1156   }
1157   ServiceWorkerStatusCode status = SERVICE_WORKER_OK;
1158   if (result == blink::WebServiceWorkerEventResultRejected)
1159     status = SERVICE_WORKER_ERROR_INSTALL_WORKER_FAILED;
1160
1161   scoped_refptr<ServiceWorkerVersion> protect(this);
1162   callback->Run(status);
1163   RemoveCallbackAndStopIfRedundant(&install_callbacks_, request_id);
1164 }
1165
1166 void ServiceWorkerVersion::OnFetchEventFinished(
1167     int request_id,
1168     ServiceWorkerFetchEventResult result,
1169     const ServiceWorkerResponse& response) {
1170   TRACE_EVENT1("ServiceWorker",
1171                "ServiceWorkerVersion::OnFetchEventFinished",
1172                "Request id", request_id);
1173   FetchCallback* callback = fetch_callbacks_.Lookup(request_id);
1174   if (!callback) {
1175     NOTREACHED() << "Got unexpected message: " << request_id;
1176     return;
1177   }
1178
1179   scoped_refptr<ServiceWorkerVersion> protect(this);
1180   callback->Run(SERVICE_WORKER_OK, result, response);
1181   RemoveCallbackAndStopIfRedundant(&fetch_callbacks_, request_id);
1182 }
1183
1184 void ServiceWorkerVersion::OnSyncEventFinished(
1185     int request_id) {
1186   TRACE_EVENT1("ServiceWorker",
1187                "ServiceWorkerVersion::OnSyncEventFinished",
1188                "Request id", request_id);
1189   StatusCallback* callback = sync_callbacks_.Lookup(request_id);
1190   if (!callback) {
1191     NOTREACHED() << "Got unexpected message: " << request_id;
1192     return;
1193   }
1194
1195   scoped_refptr<ServiceWorkerVersion> protect(this);
1196   callback->Run(SERVICE_WORKER_OK);
1197   RemoveCallbackAndStopIfRedundant(&sync_callbacks_, request_id);
1198 }
1199
1200 void ServiceWorkerVersion::OnNotificationClickEventFinished(
1201     int request_id) {
1202   TRACE_EVENT1("ServiceWorker",
1203                "ServiceWorkerVersion::OnNotificationClickEventFinished",
1204                "Request id", request_id);
1205   StatusCallback* callback = notification_click_callbacks_.Lookup(request_id);
1206   if (!callback) {
1207     NOTREACHED() << "Got unexpected message: " << request_id;
1208     return;
1209   }
1210
1211   scoped_refptr<ServiceWorkerVersion> protect(this);
1212   callback->Run(SERVICE_WORKER_OK);
1213   RemoveCallbackAndStopIfRedundant(&notification_click_callbacks_, request_id);
1214 }
1215
1216 void ServiceWorkerVersion::OnPushEventFinished(
1217     int request_id,
1218     blink::WebServiceWorkerEventResult result) {
1219   TRACE_EVENT1("ServiceWorker",
1220                "ServiceWorkerVersion::OnPushEventFinished",
1221                "Request id", request_id);
1222   StatusCallback* callback = push_callbacks_.Lookup(request_id);
1223   if (!callback) {
1224     NOTREACHED() << "Got unexpected message: " << request_id;
1225     return;
1226   }
1227   ServiceWorkerStatusCode status = SERVICE_WORKER_OK;
1228   if (result == blink::WebServiceWorkerEventResultRejected)
1229     status = SERVICE_WORKER_ERROR_EVENT_WAITUNTIL_REJECTED;
1230
1231   scoped_refptr<ServiceWorkerVersion> protect(this);
1232   callback->Run(status);
1233   RemoveCallbackAndStopIfRedundant(&push_callbacks_, request_id);
1234 }
1235
1236 void ServiceWorkerVersion::OnGeofencingEventFinished(int request_id) {
1237   TRACE_EVENT1("ServiceWorker",
1238                "ServiceWorkerVersion::OnGeofencingEventFinished",
1239                "Request id",
1240                request_id);
1241   StatusCallback* callback = geofencing_callbacks_.Lookup(request_id);
1242   if (!callback) {
1243     NOTREACHED() << "Got unexpected message: " << request_id;
1244     return;
1245   }
1246
1247   scoped_refptr<ServiceWorkerVersion> protect(this);
1248   callback->Run(SERVICE_WORKER_OK);
1249   RemoveCallbackAndStopIfRedundant(&geofencing_callbacks_, request_id);
1250 }
1251
1252 void ServiceWorkerVersion::OnCrossOriginConnectEventFinished(
1253     int request_id,
1254     bool accept_connection) {
1255   TRACE_EVENT1("ServiceWorker",
1256                "ServiceWorkerVersion::OnCrossOriginConnectEventFinished",
1257                "Request id", request_id);
1258   CrossOriginConnectCallback* callback =
1259       cross_origin_connect_callbacks_.Lookup(request_id);
1260   if (!callback) {
1261     NOTREACHED() << "Got unexpected message: " << request_id;
1262     return;
1263   }
1264
1265   scoped_refptr<ServiceWorkerVersion> protect(this);
1266   callback->Run(SERVICE_WORKER_OK, accept_connection);
1267   RemoveCallbackAndStopIfRedundant(&cross_origin_connect_callbacks_,
1268                                    request_id);
1269 }
1270
1271 void ServiceWorkerVersion::OnOpenWindow(int request_id, GURL url) {
1272   // Just abort if we are shutting down.
1273   if (!context_)
1274     return;
1275
1276   if (!url.is_valid()) {
1277     DVLOG(1) << "Received unexpected invalid URL from renderer process.";
1278     BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
1279                             base::Bind(&KillEmbeddedWorkerProcess,
1280                                        embedded_worker_->process_id(),
1281                                        RESULT_CODE_KILLED_BAD_MESSAGE));
1282     return;
1283   }
1284
1285   // The renderer treats all URLs in the about: scheme as being about:blank.
1286   // Canonicalize about: URLs to about:blank.
1287   if (url.SchemeIs(url::kAboutScheme))
1288     url = GURL(url::kAboutBlankURL);
1289
1290   // Reject requests for URLs that the process is not allowed to access. It's
1291   // possible to receive such requests since the renderer-side checks are
1292   // slightly different. For example, the view-source scheme will not be
1293   // filtered out by Blink.
1294   if (!ChildProcessSecurityPolicyImpl::GetInstance()->CanRequestURL(
1295           embedded_worker_->process_id(), url)) {
1296     embedded_worker_->SendMessage(ServiceWorkerMsg_OpenWindowError(
1297         request_id, url.spec() + " cannot be opened."));
1298     return;
1299   }
1300
1301   BrowserThread::PostTask(
1302       BrowserThread::UI, FROM_HERE,
1303       base::Bind(&OpenWindowOnUI,
1304                  url,
1305                  script_url_,
1306                  embedded_worker_->process_id(),
1307                  make_scoped_refptr(context_->wrapper()),
1308                  base::Bind(&ServiceWorkerVersion::DidOpenWindow,
1309                             weak_factory_.GetWeakPtr(),
1310                             request_id)));
1311 }
1312
1313 void ServiceWorkerVersion::DidOpenWindow(int request_id,
1314                                          int render_process_id,
1315                                          int render_frame_id) {
1316   DCHECK_CURRENTLY_ON(BrowserThread::IO);
1317
1318   if (running_status() != RUNNING)
1319     return;
1320
1321   if (render_process_id == ChildProcessHost::kInvalidUniqueID &&
1322       render_frame_id == MSG_ROUTING_NONE) {
1323     embedded_worker_->SendMessage(ServiceWorkerMsg_OpenWindowError(
1324         request_id, "Something went wrong while trying to open the window."));
1325     return;
1326   }
1327
1328   for (auto it =
1329            context_->GetClientProviderHostIterator(script_url_.GetOrigin());
1330        !it->IsAtEnd(); it->Advance()) {
1331     ServiceWorkerProviderHost* provider_host = it->GetProviderHost();
1332     if (provider_host->process_id() != render_process_id ||
1333         provider_host->frame_id() != render_frame_id) {
1334       continue;
1335     }
1336     provider_host->GetWindowClientInfo(base::Bind(
1337         &ServiceWorkerVersion::OnOpenWindowFinished, weak_factory_.GetWeakPtr(),
1338         request_id, provider_host->client_uuid()));
1339     return;
1340   }
1341
1342   // If here, it means that no provider_host was found, in which case, the
1343   // renderer should still be informed that the window was opened.
1344   OnOpenWindowFinished(request_id, std::string(), ServiceWorkerClientInfo());
1345 }
1346
1347 void ServiceWorkerVersion::OnOpenWindowFinished(
1348     int request_id,
1349     const std::string& client_uuid,
1350     const ServiceWorkerClientInfo& client_info) {
1351   DCHECK_CURRENTLY_ON(BrowserThread::IO);
1352
1353   if (running_status() != RUNNING)
1354     return;
1355
1356   ServiceWorkerClientInfo client(client_info);
1357
1358   // If the |client_info| is empty, it means that the opened window wasn't
1359   // controlled but the action still succeeded. The renderer process is
1360   // expecting an empty client in such case.
1361   if (!client.IsEmpty())
1362     client.client_uuid = client_uuid;
1363
1364   embedded_worker_->SendMessage(ServiceWorkerMsg_OpenWindowResponse(
1365       request_id, client));
1366 }
1367
1368 void ServiceWorkerVersion::OnSetCachedMetadata(const GURL& url,
1369                                                const std::vector<char>& data) {
1370   int64 callback_id = base::TimeTicks::Now().ToInternalValue();
1371   TRACE_EVENT_ASYNC_BEGIN1("ServiceWorker",
1372                            "ServiceWorkerVersion::OnSetCachedMetadata",
1373                            callback_id, "URL", url.spec());
1374   script_cache_map_.WriteMetadata(
1375       url, data, base::Bind(&ServiceWorkerVersion::OnSetCachedMetadataFinished,
1376                             weak_factory_.GetWeakPtr(), callback_id));
1377 }
1378
1379 void ServiceWorkerVersion::OnSetCachedMetadataFinished(int64 callback_id,
1380                                                        int result) {
1381   TRACE_EVENT_ASYNC_END1("ServiceWorker",
1382                          "ServiceWorkerVersion::OnSetCachedMetadata",
1383                          callback_id, "result", result);
1384   FOR_EACH_OBSERVER(Listener, listeners_, OnCachedMetadataUpdated(this));
1385 }
1386
1387 void ServiceWorkerVersion::OnClearCachedMetadata(const GURL& url) {
1388   int64 callback_id = base::TimeTicks::Now().ToInternalValue();
1389   TRACE_EVENT_ASYNC_BEGIN1("ServiceWorker",
1390                            "ServiceWorkerVersion::OnClearCachedMetadata",
1391                            callback_id, "URL", url.spec());
1392   script_cache_map_.ClearMetadata(
1393       url, base::Bind(&ServiceWorkerVersion::OnClearCachedMetadataFinished,
1394                       weak_factory_.GetWeakPtr(), callback_id));
1395 }
1396
1397 void ServiceWorkerVersion::OnClearCachedMetadataFinished(int64 callback_id,
1398                                                          int result) {
1399   TRACE_EVENT_ASYNC_END1("ServiceWorker",
1400                          "ServiceWorkerVersion::OnClearCachedMetadata",
1401                          callback_id, "result", result);
1402   FOR_EACH_OBSERVER(Listener, listeners_, OnCachedMetadataUpdated(this));
1403 }
1404
1405 void ServiceWorkerVersion::OnPostMessageToClient(
1406     const std::string& client_uuid,
1407     const base::string16& message,
1408     const std::vector<TransferredMessagePort>& sent_message_ports) {
1409   if (!context_)
1410     return;
1411   TRACE_EVENT1("ServiceWorker",
1412                "ServiceWorkerVersion::OnPostMessageToDocument",
1413                "Client id", client_uuid);
1414   ServiceWorkerProviderHost* provider_host =
1415       context_->GetProviderHostByClientID(client_uuid);
1416   if (!provider_host) {
1417     // The client may already have been closed, just ignore.
1418     return;
1419   }
1420   if (provider_host->document_url().GetOrigin() != script_url_.GetOrigin()) {
1421     // The client does not belong to the same origin as this ServiceWorker,
1422     // possibly due to timing issue or bad message.
1423     return;
1424   }
1425   provider_host->PostMessage(message, sent_message_ports);
1426 }
1427
1428 void ServiceWorkerVersion::OnFocusClient(int request_id,
1429                                          const std::string& client_uuid) {
1430   if (!context_)
1431     return;
1432   TRACE_EVENT2("ServiceWorker",
1433                "ServiceWorkerVersion::OnFocusClient",
1434                "Request id", request_id,
1435                "Client id", client_uuid);
1436   ServiceWorkerProviderHost* provider_host =
1437       context_->GetProviderHostByClientID(client_uuid);
1438   if (!provider_host) {
1439     // The client may already have been closed, just ignore.
1440     return;
1441   }
1442   if (provider_host->document_url().GetOrigin() != script_url_.GetOrigin()) {
1443     // The client does not belong to the same origin as this ServiceWorker,
1444     // possibly due to timing issue or bad message.
1445     return;
1446   }
1447   provider_host->Focus(base::Bind(&ServiceWorkerVersion::OnFocusClientFinished,
1448                                   weak_factory_.GetWeakPtr(), request_id,
1449                                   client_uuid));
1450 }
1451
1452 void ServiceWorkerVersion::OnFocusClientFinished(
1453     int request_id,
1454     const std::string& client_uuid,
1455     const ServiceWorkerClientInfo& client) {
1456   DCHECK_CURRENTLY_ON(BrowserThread::IO);
1457
1458   if (running_status() != RUNNING)
1459     return;
1460
1461   ServiceWorkerClientInfo client_info(client);
1462   client_info.client_uuid = client_uuid;
1463
1464   embedded_worker_->SendMessage(ServiceWorkerMsg_FocusClientResponse(
1465       request_id, client_info));
1466 }
1467
1468 void ServiceWorkerVersion::OnSkipWaiting(int request_id) {
1469   skip_waiting_ = true;
1470   if (status_ != INSTALLED)
1471     return DidSkipWaiting(request_id);
1472
1473   if (!context_)
1474     return;
1475   ServiceWorkerRegistration* registration =
1476       context_->GetLiveRegistration(registration_id_);
1477   if (!registration)
1478     return;
1479   pending_skip_waiting_requests_.push_back(request_id);
1480   if (pending_skip_waiting_requests_.size() == 1)
1481     registration->ActivateWaitingVersionWhenReady();
1482 }
1483
1484 void ServiceWorkerVersion::DidSkipWaiting(int request_id) {
1485   if (running_status() == STARTING || running_status() == RUNNING)
1486     embedded_worker_->SendMessage(ServiceWorkerMsg_DidSkipWaiting(request_id));
1487 }
1488
1489 void ServiceWorkerVersion::OnClaimClients(int request_id) {
1490   if (status_ != ACTIVATING && status_ != ACTIVATED) {
1491     embedded_worker_->SendMessage(ServiceWorkerMsg_ClaimClientsError(
1492         request_id, blink::WebServiceWorkerError::ErrorTypeState,
1493         base::ASCIIToUTF16(kClaimClientsStateErrorMesage)));
1494     return;
1495   }
1496   if (context_) {
1497     if (ServiceWorkerRegistration* registration =
1498             context_->GetLiveRegistration(registration_id_)) {
1499       registration->ClaimClients();
1500       embedded_worker_->SendMessage(
1501           ServiceWorkerMsg_DidClaimClients(request_id));
1502       return;
1503     }
1504   }
1505
1506   embedded_worker_->SendMessage(ServiceWorkerMsg_ClaimClientsError(
1507       request_id, blink::WebServiceWorkerError::ErrorTypeAbort,
1508       base::ASCIIToUTF16(kClaimClientsShutdownErrorMesage)));
1509 }
1510
1511 void ServiceWorkerVersion::OnPongFromWorker() {
1512   ClearTick(&ping_time_);
1513 }
1514
1515 void ServiceWorkerVersion::DidEnsureLiveRegistrationForStartWorker(
1516     bool pause_after_download,
1517     const StatusCallback& callback,
1518     ServiceWorkerStatusCode status,
1519     const scoped_refptr<ServiceWorkerRegistration>& protect) {
1520   if (status != SERVICE_WORKER_OK || is_redundant()) {
1521     RecordStartWorkerResult(status);
1522     RunSoon(base::Bind(callback, SERVICE_WORKER_ERROR_START_WORKER_FAILED));
1523     return;
1524   }
1525
1526   switch (running_status()) {
1527     case RUNNING:
1528       RunSoon(base::Bind(callback, SERVICE_WORKER_OK));
1529       return;
1530     case STOPPING:
1531     case STOPPED:
1532     case STARTING:
1533       if (start_callbacks_.empty()) {
1534         start_callbacks_.push_back(
1535             base::Bind(&ServiceWorkerVersion::RecordStartWorkerResult,
1536                        weak_factory_.GetWeakPtr()));
1537       }
1538       // Keep the live registration while starting the worker.
1539       start_callbacks_.push_back(
1540           base::Bind(&RunStartWorkerCallback, callback, protect));
1541       StartWorkerInternal(pause_after_download);
1542       return;
1543   }
1544 }
1545
1546 void ServiceWorkerVersion::StartWorkerInternal(bool pause_after_download) {
1547   if (!timeout_timer_.IsRunning())
1548     StartTimeoutTimer();
1549   if (running_status() == STOPPED) {
1550     embedded_worker_->Start(
1551         version_id_, scope_, script_url_, pause_after_download,
1552         base::Bind(&ServiceWorkerVersion::OnStartSentAndScriptEvaluated,
1553                    weak_factory_.GetWeakPtr()));
1554   }
1555 }
1556
1557 void ServiceWorkerVersion::GetWindowClients(
1558     int request_id,
1559     const ServiceWorkerClientQueryOptions& options) {
1560   DCHECK(options.client_type == blink::WebServiceWorkerClientTypeWindow ||
1561          options.client_type == blink::WebServiceWorkerClientTypeAll);
1562   std::vector<Tuple<int, int, std::string>> clients_info;
1563   if (!options.include_uncontrolled) {
1564     for (auto& controllee : controllee_map_)
1565       AddWindowClient(controllee.second, &clients_info);
1566   } else {
1567     for (auto it =
1568              context_->GetClientProviderHostIterator(script_url_.GetOrigin());
1569          !it->IsAtEnd(); it->Advance()) {
1570       AddWindowClient(it->GetProviderHost(), &clients_info);
1571     }
1572   }
1573
1574   if (clients_info.empty()) {
1575     DidGetWindowClients(request_id, options,
1576                         make_scoped_ptr(new ServiceWorkerClients));
1577     return;
1578   }
1579
1580   BrowserThread::PostTask(
1581       BrowserThread::UI, FROM_HERE,
1582       base::Bind(&OnGetWindowClientsFromUI, clients_info, script_url_,
1583                  base::Bind(&ServiceWorkerVersion::DidGetWindowClients,
1584                             weak_factory_.GetWeakPtr(), request_id, options)));
1585 }
1586
1587 void ServiceWorkerVersion::DidGetWindowClients(
1588     int request_id,
1589     const ServiceWorkerClientQueryOptions& options,
1590     scoped_ptr<ServiceWorkerClients> clients) {
1591   DCHECK_CURRENTLY_ON(BrowserThread::IO);
1592   if (options.client_type == blink::WebServiceWorkerClientTypeAll)
1593     GetNonWindowClients(request_id, options, clients.get());
1594   OnGetClientsFinished(request_id, *clients);
1595 }
1596
1597 void ServiceWorkerVersion::GetNonWindowClients(
1598     int request_id,
1599     const ServiceWorkerClientQueryOptions& options,
1600     ServiceWorkerClients* clients) {
1601   if (!options.include_uncontrolled) {
1602     for (auto& controllee : controllee_map_) {
1603       AddNonWindowClient(controllee.second, options, clients);
1604     }
1605   } else {
1606     for (auto it =
1607              context_->GetClientProviderHostIterator(script_url_.GetOrigin());
1608          !it->IsAtEnd(); it->Advance()) {
1609       AddNonWindowClient(it->GetProviderHost(), options, clients);
1610     }
1611   }
1612 }
1613
1614 void ServiceWorkerVersion::StartTimeoutTimer() {
1615   DCHECK(!timeout_timer_.IsRunning());
1616
1617   if (embedded_worker_->devtools_attached()) {
1618     // Don't record the startup time metric once DevTools is attached.
1619     ClearTick(&start_time_);
1620     skip_recording_startup_time_ = true;
1621   } else {
1622     RestartTick(&start_time_);
1623     skip_recording_startup_time_ = false;
1624   }
1625
1626   ClearTick(&idle_time_);
1627   ClearTick(&ping_time_);
1628   ping_state_ = NOT_PINGING;
1629
1630   timeout_timer_.Start(FROM_HERE,
1631                        base::TimeDelta::FromSeconds(kTimeoutTimerDelaySeconds),
1632                        this, &ServiceWorkerVersion::OnTimeoutTimer);
1633 }
1634
1635 void ServiceWorkerVersion::StopTimeoutTimer() {
1636   timeout_timer_.Stop();
1637 }
1638
1639 void ServiceWorkerVersion::OnTimeoutTimer() {
1640   DCHECK(running_status() == STARTING || running_status() == RUNNING ||
1641          running_status() == STOPPING)
1642       << running_status();
1643
1644   // Starting a worker hasn't finished within a certain period.
1645   if (GetTickDuration(start_time_) >
1646       base::TimeDelta::FromMinutes(kStartWorkerTimeoutMinutes)) {
1647     DCHECK(running_status() == STARTING || running_status() == STOPPING)
1648         << running_status();
1649     scoped_refptr<ServiceWorkerVersion> protect(this);
1650     RunCallbacks(this, &start_callbacks_, SERVICE_WORKER_ERROR_TIMEOUT);
1651     if (running_status() == STARTING)
1652       embedded_worker_->Stop();
1653     return;
1654   }
1655
1656   // Requests have not finished within a certain period.
1657   bool request_timed_out = false;
1658   while (!requests_.empty()) {
1659     RequestInfo info = requests_.front();
1660     if (GetTickDuration(info.time) <
1661         base::TimeDelta::FromMinutes(kRequestTimeoutMinutes))
1662       break;
1663     if (OnRequestTimeout(info))
1664       request_timed_out = true;
1665     requests_.pop();
1666   }
1667   if (request_timed_out && running_status() != STOPPING)
1668     embedded_worker_->Stop();
1669
1670   // For the timeouts below, there are no callbacks to timeout so there is
1671   // nothing more to do if the worker is already stopping.
1672   if (running_status() == STOPPING)
1673     return;
1674
1675   // The worker has been idle for longer than a certain period.
1676   if (GetTickDuration(idle_time_) >
1677       base::TimeDelta::FromSeconds(kIdleWorkerTimeoutSeconds)) {
1678     StopWorkerIfIdle();
1679     return;
1680   }
1681
1682   // The worker hasn't responded to ping within a certain period.
1683   if (GetTickDuration(ping_time_) >
1684       base::TimeDelta::FromSeconds(kPingTimeoutSeconds)) {
1685     OnPingTimeout();
1686     return;
1687   }
1688
1689   if (ping_state_ == PINGING && ping_time_.is_null())
1690     PingWorker();
1691 }
1692
1693 void ServiceWorkerVersion::PingWorker() {
1694   DCHECK(running_status() == STARTING || running_status() == RUNNING);
1695   DCHECK_EQ(PINGING, ping_state_);
1696   ServiceWorkerStatusCode status =
1697       embedded_worker_->SendMessage(ServiceWorkerMsg_Ping());
1698   if (status != SERVICE_WORKER_OK) {
1699     // TODO(falken): Maybe try resending Ping a few times first?
1700     ping_state_ = PING_TIMED_OUT;
1701     StopWorkerIfIdle();
1702     return;
1703   }
1704   RestartTick(&ping_time_);
1705 }
1706
1707 void ServiceWorkerVersion::OnPingTimeout() {
1708   DCHECK(running_status() == STARTING || running_status() == RUNNING);
1709   ping_state_ = PING_TIMED_OUT;
1710   // TODO(falken): Show a message to the developer that the SW was stopped due
1711   // to timeout (crbug.com/457968). Also, change the error code to
1712   // SERVICE_WORKER_ERROR_TIMEOUT.
1713   StopWorkerIfIdle();
1714 }
1715
1716 void ServiceWorkerVersion::StopWorkerIfIdle() {
1717   if (HasInflightRequests() && ping_state_ != PING_TIMED_OUT)
1718     return;
1719   if (running_status() == STOPPED || running_status() == STOPPING ||
1720       !stop_callbacks_.empty()) {
1721     return;
1722   }
1723
1724   // TODO(falken): We may need to handle StopIfIdle failure and
1725   // forcibly fail pending callbacks so no one is stuck waiting
1726   // for the worker.
1727   embedded_worker_->StopIfIdle();
1728 }
1729
1730 bool ServiceWorkerVersion::HasInflightRequests() const {
1731   return
1732     !activate_callbacks_.IsEmpty() ||
1733     !install_callbacks_.IsEmpty() ||
1734     !fetch_callbacks_.IsEmpty() ||
1735     !sync_callbacks_.IsEmpty() ||
1736     !notification_click_callbacks_.IsEmpty() ||
1737     !push_callbacks_.IsEmpty() ||
1738     !geofencing_callbacks_.IsEmpty() ||
1739     !cross_origin_connect_callbacks_.IsEmpty() ||
1740     !streaming_url_request_jobs_.empty();
1741 }
1742
1743 void ServiceWorkerVersion::RecordStartWorkerResult(
1744     ServiceWorkerStatusCode status) {
1745   base::TimeTicks start_time = start_time_;
1746   ClearTick(&start_time_);
1747
1748   // Failing to start a redundant worker isn't interesting and very common when
1749   // update dooms because the script is byte-to-byte identical.
1750   if (is_redundant())
1751     return;
1752
1753   ServiceWorkerMetrics::RecordStartWorkerStatus(status, IsInstalled(status_));
1754
1755   if (status == SERVICE_WORKER_OK && !start_time.is_null() &&
1756       !skip_recording_startup_time_) {
1757     ServiceWorkerMetrics::RecordStartWorkerTime(GetTickDuration(start_time),
1758                                                 IsInstalled(status_));
1759   }
1760
1761   if (status != SERVICE_WORKER_ERROR_TIMEOUT)
1762     return;
1763   EmbeddedWorkerInstance::StartingPhase phase =
1764       EmbeddedWorkerInstance::NOT_STARTING;
1765   EmbeddedWorkerInstance::Status running_status = embedded_worker_->status();
1766   // Build an artifical JavaScript exception to show in the ServiceWorker
1767   // log for developers; it's not user-facing so it's not a localized resource.
1768   std::string message = "ServiceWorker startup timed out. ";
1769   if (running_status != EmbeddedWorkerInstance::STARTING) {
1770     message.append("The worker had unexpected status: ");
1771     message.append(EmbeddedWorkerInstance::StatusToString(running_status));
1772   } else {
1773     phase = embedded_worker_->starting_phase();
1774     message.append("The worker was in startup phase: ");
1775     message.append(EmbeddedWorkerInstance::StartingPhaseToString(phase));
1776   }
1777   message.append(".");
1778   OnReportException(base::UTF8ToUTF16(message), -1, -1, GURL());
1779   DVLOG(1) << message;
1780   UMA_HISTOGRAM_ENUMERATION("ServiceWorker.StartWorker.TimeoutPhase",
1781                             phase,
1782                             EmbeddedWorkerInstance::STARTING_PHASE_MAX_VALUE);
1783 }
1784
1785 template <typename IDMAP>
1786 void ServiceWorkerVersion::RemoveCallbackAndStopIfRedundant(IDMAP* callbacks,
1787                                                             int request_id) {
1788   RestartTick(&idle_time_);
1789   callbacks->Remove(request_id);
1790   if (is_redundant()) {
1791     // The stop should be already scheduled, but try to stop immediately, in
1792     // order to release worker resources soon.
1793     StopWorkerIfIdle();
1794   }
1795 }
1796
1797 template <typename CallbackType>
1798 int ServiceWorkerVersion::AddRequest(
1799     const CallbackType& callback,
1800     IDMap<CallbackType, IDMapOwnPointer>* callback_map,
1801     RequestType request_type) {
1802   int request_id = callback_map->Add(new CallbackType(callback));
1803   requests_.push(RequestInfo(request_id, request_type));
1804   return request_id;
1805 }
1806
1807 bool ServiceWorkerVersion::OnRequestTimeout(const RequestInfo& info) {
1808   switch (info.type) {
1809     case REQUEST_ACTIVATE:
1810       return RunIDMapCallback(&activate_callbacks_, info.id,
1811                               SERVICE_WORKER_ERROR_TIMEOUT);
1812     case REQUEST_INSTALL:
1813       return RunIDMapCallback(&install_callbacks_, info.id,
1814                               SERVICE_WORKER_ERROR_TIMEOUT);
1815     case REQUEST_FETCH:
1816       return RunIDMapCallback(
1817           &fetch_callbacks_, info.id, SERVICE_WORKER_ERROR_TIMEOUT,
1818           /* The other args are ignored for non-OK status. */
1819           SERVICE_WORKER_FETCH_EVENT_RESULT_FALLBACK, ServiceWorkerResponse());
1820     case REQUEST_SYNC:
1821       return RunIDMapCallback(&sync_callbacks_, info.id,
1822                               SERVICE_WORKER_ERROR_TIMEOUT);
1823     case REQUEST_NOTIFICATION_CLICK:
1824       return RunIDMapCallback(&notification_click_callbacks_, info.id,
1825                               SERVICE_WORKER_ERROR_TIMEOUT);
1826     case REQUEST_PUSH:
1827       return RunIDMapCallback(&push_callbacks_, info.id,
1828                               SERVICE_WORKER_ERROR_TIMEOUT);
1829     case REQUEST_GEOFENCING:
1830       return RunIDMapCallback(&geofencing_callbacks_, info.id,
1831                               SERVICE_WORKER_ERROR_TIMEOUT);
1832     case REQUEST_CROSS_ORIGIN_CONNECT:
1833       return RunIDMapCallback(&cross_origin_connect_callbacks_, info.id,
1834                               SERVICE_WORKER_ERROR_TIMEOUT,
1835                               false /* accept_connection */);
1836   }
1837   NOTREACHED() << "Got unexpected request type: " << info.type;
1838   return false;
1839 }
1840
1841 void ServiceWorkerVersion::SetAllRequestTimes(const base::TimeTicks& ticks) {
1842   std::queue<RequestInfo> new_requests;
1843   while (!requests_.empty()) {
1844     RequestInfo info = requests_.front();
1845     info.time = ticks;
1846     new_requests.push(info);
1847     requests_.pop();
1848   }
1849   requests_ = new_requests;
1850 }
1851
1852 ServiceWorkerStatusCode ServiceWorkerVersion::DeduceStartWorkerFailureReason(
1853     ServiceWorkerStatusCode default_code) {
1854   if (ping_state_ == PING_TIMED_OUT)
1855     return SERVICE_WORKER_ERROR_TIMEOUT;
1856
1857   const net::URLRequestStatus& main_script_status =
1858       script_cache_map()->main_script_status();
1859   if (main_script_status.status() != net::URLRequestStatus::SUCCESS) {
1860     switch (main_script_status.error()) {
1861       case net::ERR_INSECURE_RESPONSE:
1862       case net::ERR_UNSAFE_REDIRECT:
1863         return SERVICE_WORKER_ERROR_SECURITY;
1864       case net::ERR_ABORTED:
1865         return SERVICE_WORKER_ERROR_ABORT;
1866       default:
1867         return SERVICE_WORKER_ERROR_NETWORK;
1868     }
1869   }
1870
1871   return default_code;
1872 }
1873
1874 }  // namespace content