content/browser/service_worker/service_worker_registration.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_registration.h"
   6
   7 #include "content/browser/service_worker/service_worker_context_core.h"
   8 #include "content/browser/service_worker/service_worker_info.h"
   9 #include "content/browser/service_worker/service_worker_register_job.h"
  10 #include "content/browser/service_worker/service_worker_utils.h"
  11 #include "content/public/browser/browser_thread.h"
  12
  13 namespace content {
  14
  15 namespace {
  16
  17 ServiceWorkerVersionInfo GetVersionInfo(ServiceWorkerVersion* version) {
  18   if (!version)
  19     return ServiceWorkerVersionInfo();
  20   return version->GetInfo();
  21 }
  22
  23 }  // namespace
  24
  25 ServiceWorkerRegistration::ServiceWorkerRegistration(
  26     const GURL& pattern,
  27     int64 registration_id,
  28     base::WeakPtr<ServiceWorkerContextCore> context)
  29     : pattern_(pattern),
  30       registration_id_(registration_id),
  31       is_deleted_(false),
  32       is_uninstalling_(false),
  33       is_uninstalled_(false),
  34       should_activate_when_ready_(false),
  35       resources_total_size_bytes_(0),
  36       context_(context) {
  37   DCHECK_CURRENTLY_ON(BrowserThread::IO);
  38   DCHECK(context_);
  39   context_->AddLiveRegistration(this);
  40 }
  41
  42 ServiceWorkerRegistration::~ServiceWorkerRegistration() {
  43   DCHECK_CURRENTLY_ON(BrowserThread::IO);
  44   DCHECK(!listeners_.might_have_observers());
  45   if (context_)
  46     context_->RemoveLiveRegistration(registration_id_);
  47   if (active_version())
  48     active_version()->RemoveListener(this);
  49 }
  50
  51 ServiceWorkerVersion* ServiceWorkerRegistration::GetNewestVersion() const {
  52   if (installing_version())
  53     return installing_version();
  54   if (waiting_version())
  55     return waiting_version();
  56   return active_version();
  57 }
  58
  59 void ServiceWorkerRegistration::AddListener(Listener* listener) {
  60   listeners_.AddObserver(listener);
  61 }
  62
  63 void ServiceWorkerRegistration::RemoveListener(Listener* listener) {
  64   listeners_.RemoveObserver(listener);
  65 }
  66
  67 void ServiceWorkerRegistration::NotifyRegistrationFailed() {
  68   FOR_EACH_OBSERVER(Listener, listeners_, OnRegistrationFailed(this));
  69 }
  70
  71 void ServiceWorkerRegistration::NotifyUpdateFound() {
  72   FOR_EACH_OBSERVER(Listener, listeners_, OnUpdateFound(this));
  73 }
  74
  75 ServiceWorkerRegistrationInfo ServiceWorkerRegistration::GetInfo() {
  76   DCHECK_CURRENTLY_ON(BrowserThread::IO);
  77   return ServiceWorkerRegistrationInfo(
  78       pattern(), registration_id_,
  79       is_deleted_ ? ServiceWorkerRegistrationInfo::IS_DELETED
  80                   : ServiceWorkerRegistrationInfo::IS_NOT_DELETED,
  81       GetVersionInfo(active_version_.get()),
  82       GetVersionInfo(waiting_version_.get()),
  83       GetVersionInfo(installing_version_.get()), resources_total_size_bytes_);
  84 }
  85
  86 void ServiceWorkerRegistration::SetActiveVersion(
  87     ServiceWorkerVersion* version) {
  88   should_activate_when_ready_ = false;
  89   SetVersionInternal(version, &active_version_,
  90                      ChangedVersionAttributesMask::ACTIVE_VERSION);
  91 }
  92
  93 void ServiceWorkerRegistration::SetWaitingVersion(
  94     ServiceWorkerVersion* version) {
  95   should_activate_when_ready_ = false;
  96   SetVersionInternal(version, &waiting_version_,
  97                      ChangedVersionAttributesMask::WAITING_VERSION);
  98 }
  99
 100 void ServiceWorkerRegistration::SetInstallingVersion(
 101     ServiceWorkerVersion* version) {
 102   SetVersionInternal(version, &installing_version_,
 103                      ChangedVersionAttributesMask::INSTALLING_VERSION);
 104 }
 105
 106 void ServiceWorkerRegistration::UnsetVersion(ServiceWorkerVersion* version) {
 107   if (!version)
 108     return;
 109   ChangedVersionAttributesMask mask;
 110   UnsetVersionInternal(version, &mask);
 111   if (mask.changed()) {
 112     ServiceWorkerRegistrationInfo info = GetInfo();
 113     FOR_EACH_OBSERVER(Listener, listeners_,
 114                       OnVersionAttributesChanged(this, mask, info));
 115   }
 116 }
 117
 118 void ServiceWorkerRegistration::SetVersionInternal(
 119     ServiceWorkerVersion* version,
 120     scoped_refptr<ServiceWorkerVersion>* data_member,
 121     int change_flag) {
 122   if (version == data_member->get())
 123     return;
 124   scoped_refptr<ServiceWorkerVersion> protect(version);
 125   ChangedVersionAttributesMask mask;
 126   if (version)
 127     UnsetVersionInternal(version, &mask);
 128   if (*data_member && *data_member == active_version_)
 129     active_version_->RemoveListener(this);
 130   *data_member = version;
 131   if (active_version_.get() && active_version_.get() == version)
 132     active_version_->AddListener(this);
 133   mask.add(change_flag);
 134   ServiceWorkerRegistrationInfo info = GetInfo();
 135   FOR_EACH_OBSERVER(Listener, listeners_,
 136                     OnVersionAttributesChanged(this, mask, info));
 137 }
 138
 139 void ServiceWorkerRegistration::UnsetVersionInternal(
 140     ServiceWorkerVersion* version,
 141     ChangedVersionAttributesMask* mask) {
 142   DCHECK(version);
 143   if (installing_version_.get() == version) {
 144     installing_version_ = NULL;
 145     mask->add(ChangedVersionAttributesMask::INSTALLING_VERSION);
 146   } else if (waiting_version_.get() == version) {
 147     waiting_version_ = NULL;
 148     mask->add(ChangedVersionAttributesMask::WAITING_VERSION);
 149   } else if (active_version_.get() == version) {
 150     active_version_->RemoveListener(this);
 151     active_version_ = NULL;
 152     mask->add(ChangedVersionAttributesMask::ACTIVE_VERSION);
 153   }
 154 }
 155
 156 void ServiceWorkerRegistration::ActivateWaitingVersionWhenReady() {
 157   DCHECK(waiting_version());
 158   should_activate_when_ready_ = true;
 159
 160   if (!active_version() || !active_version()->HasControllee() ||
 161       waiting_version()->skip_waiting())
 162     ActivateWaitingVersion();
 163 }
 164
 165 void ServiceWorkerRegistration::ClaimClients() {
 166   DCHECK(context_);
 167   DCHECK(active_version());
 168
 169   for (scoped_ptr<ServiceWorkerContextCore::ProviderHostIterator> it =
 170            context_->GetProviderHostIterator();
 171        !it->IsAtEnd(); it->Advance()) {
 172     ServiceWorkerProviderHost* host = it->GetProviderHost();
 173     if (host->IsHostToRunningServiceWorker())
 174       continue;
 175     if (host->controlling_version() == active_version())
 176       continue;
 177     if (host->MatchRegistration() == this)
 178       host->ClaimedByRegistration(this);
 179   }
 180 }
 181
 182 void ServiceWorkerRegistration::ClearWhenReady() {
 183   DCHECK(context_);
 184   if (is_uninstalling_)
 185     return;
 186   is_uninstalling_ = true;
 187
 188   context_->storage()->NotifyUninstallingRegistration(this);
 189   context_->storage()->DeleteRegistration(
 190       id(),
 191       pattern().GetOrigin(),
 192       base::Bind(&ServiceWorkerUtils::NoOpStatusCallback));
 193
 194   if (!active_version() || !active_version()->HasControllee())
 195     Clear();
 196 }
 197
 198 void ServiceWorkerRegistration::AbortPendingClear(
 199     const StatusCallback& callback) {
 200   DCHECK(context_);
 201   if (!is_uninstalling()) {
 202     callback.Run(SERVICE_WORKER_OK);
 203     return;
 204   }
 205   is_uninstalling_ = false;
 206   context_->storage()->NotifyDoneUninstallingRegistration(this);
 207
 208   scoped_refptr<ServiceWorkerVersion> most_recent_version =
 209       waiting_version() ? waiting_version() : active_version();
 210   DCHECK(most_recent_version.get());
 211   context_->storage()->NotifyInstallingRegistration(this);
 212   context_->storage()->StoreRegistration(
 213       this,
 214       most_recent_version.get(),
 215       base::Bind(&ServiceWorkerRegistration::OnRestoreFinished,
 216                  this,
 217                  callback,
 218                  most_recent_version));
 219 }
 220
 221 void ServiceWorkerRegistration::GetUserData(
 222     const std::string& key,
 223     const GetUserDataCallback& callback) {
 224   DCHECK(context_);
 225   context_->storage()->GetUserData(registration_id_, key, callback);
 226 }
 227
 228 void ServiceWorkerRegistration::StoreUserData(
 229     const std::string& key,
 230     const std::string& data,
 231     const StatusCallback& callback) {
 232   DCHECK(context_);
 233   context_->storage()->StoreUserData(
 234       registration_id_, pattern().GetOrigin(), key, data, callback);
 235 }
 236
 237 void ServiceWorkerRegistration::ClearUserData(
 238     const std::string& key,
 239     const StatusCallback& callback) {
 240   DCHECK(context_);
 241   context_->storage()->ClearUserData(registration_id_, key, callback);
 242 }
 243
 244 void ServiceWorkerRegistration::OnNoControllees(ServiceWorkerVersion* version) {
 245   DCHECK_EQ(active_version(), version);
 246   if (is_uninstalling_)
 247     Clear();
 248   else if (should_activate_when_ready_)
 249     ActivateWaitingVersion();
 250   is_uninstalling_ = false;
 251   should_activate_when_ready_ = false;
 252 }
 253
 254 void ServiceWorkerRegistration::ActivateWaitingVersion() {
 255   DCHECK(context_);
 256   DCHECK(waiting_version());
 257   DCHECK(should_activate_when_ready_);
 258   should_activate_when_ready_ = false;
 259   scoped_refptr<ServiceWorkerVersion> activating_version = waiting_version();
 260   scoped_refptr<ServiceWorkerVersion> exiting_version = active_version();
 261
 262   if (activating_version->is_redundant())
 263     return;  // Activation is no longer relevant.
 264
 265   // "5. If exitingWorker is not null,
 266   if (exiting_version.get()) {
 267     // TODO(michaeln): should wait for events to be complete
 268     // "1. Wait for exitingWorker to finish handling any in-progress requests."
 269     // "2. Terminate exitingWorker."
 270     exiting_version->StopWorker(
 271         base::Bind(&ServiceWorkerUtils::NoOpStatusCallback));
 272     // "3. Run the [[UpdateState]] algorithm passing exitingWorker and
 273     // "redundant" as the arguments."
 274     exiting_version->SetStatus(ServiceWorkerVersion::REDUNDANT);
 275   }
 276
 277   // "6. Set serviceWorkerRegistration.activeWorker to activatingWorker."
 278   // "7. Set serviceWorkerRegistration.waitingWorker to null."
 279   SetActiveVersion(activating_version.get());
 280
 281   // "8. Run the [[UpdateState]] algorithm passing registration.activeWorker and
 282   // "activating" as arguments."
 283   activating_version->SetStatus(ServiceWorkerVersion::ACTIVATING);
 284   // "9. Fire a simple event named controllerchange..."
 285   if (activating_version->skip_waiting())
 286     FOR_EACH_OBSERVER(Listener, listeners_, OnSkippedWaiting(this));
 287
 288   // "10. Queue a task to fire an event named activate..."
 289   activating_version->DispatchActivateEvent(
 290       base::Bind(&ServiceWorkerRegistration::OnActivateEventFinished,
 291                  this, activating_version));
 292 }
 293
 294 void ServiceWorkerRegistration::OnActivateEventFinished(
 295     ServiceWorkerVersion* activating_version,
 296     ServiceWorkerStatusCode status) {
 297   if (!context_ || activating_version != active_version())
 298     return;
 299   // "If activateFailed is true, then:..."
 300   if (status != SERVICE_WORKER_OK) {
 301     // "Set registration's active worker to null." (The spec's step order may
 302     // differ. It's OK because the other steps queue a task.)
 303     UnsetVersion(activating_version);
 304
 305     // "Run the Update State algorithm passing registration's active worker and
 306     // 'redundant' as the arguments."
 307     activating_version->SetStatus(ServiceWorkerVersion::REDUNDANT);
 308
 309     // "For each service worker client client whose active worker is
 310     // registration's active worker..." set the active worker to null.
 311     for (scoped_ptr<ServiceWorkerContextCore::ProviderHostIterator> it =
 312              context_->GetProviderHostIterator();
 313          !it->IsAtEnd(); it->Advance()) {
 314       ServiceWorkerProviderHost* host = it->GetProviderHost();
 315       if (host->controlling_version() == activating_version)
 316         host->NotifyControllerActivationFailed();
 317     }
 318
 319     activating_version->Doom();
 320     if (!waiting_version()) {
 321       // Delete the records from the db.
 322       context_->storage()->DeleteRegistration(
 323           id(), pattern().GetOrigin(),
 324           base::Bind(&ServiceWorkerRegistration::OnDeleteFinished, this));
 325       // But not from memory if there is a version in the pipeline.
 326       if (installing_version()) {
 327         is_deleted_ = false;
 328       } else {
 329         is_uninstalled_ = true;
 330         FOR_EACH_OBSERVER(Listener, listeners_, OnRegistrationFailed(this));
 331       }
 332     }
 333     return;
 334   }
 335
 336   // "Run the Update State algorithm passing registration's active worker and
 337   // 'activated' as the arguments."
 338   activating_version->SetStatus(ServiceWorkerVersion::ACTIVATED);
 339   if (context_) {
 340     context_->storage()->UpdateToActiveState(
 341         this,
 342         base::Bind(&ServiceWorkerUtils::NoOpStatusCallback));
 343   }
 344 }
 345
 346 void ServiceWorkerRegistration::OnDeleteFinished(
 347     ServiceWorkerStatusCode status) {
 348   // Intentionally empty completion callback, used to prevent
 349   // |this| from being deleted until the storage method completes.
 350 }
 351
 352 void ServiceWorkerRegistration::Clear() {
 353   is_uninstalling_ = false;
 354   is_uninstalled_ = true;
 355   if (context_)
 356     context_->storage()->NotifyDoneUninstallingRegistration(this);
 357
 358   ChangedVersionAttributesMask mask;
 359   if (installing_version_.get()) {
 360     installing_version_->Doom();
 361     installing_version_ = NULL;
 362     mask.add(ChangedVersionAttributesMask::INSTALLING_VERSION);
 363   }
 364   if (waiting_version_.get()) {
 365     waiting_version_->Doom();
 366     waiting_version_ = NULL;
 367     mask.add(ChangedVersionAttributesMask::WAITING_VERSION);
 368   }
 369   if (active_version_.get()) {
 370     active_version_->Doom();
 371     active_version_->RemoveListener(this);
 372     active_version_ = NULL;
 373     mask.add(ChangedVersionAttributesMask::ACTIVE_VERSION);
 374   }
 375   if (mask.changed()) {
 376     ServiceWorkerRegistrationInfo info = GetInfo();
 377     FOR_EACH_OBSERVER(Listener, listeners_,
 378                       OnVersionAttributesChanged(this, mask, info));
 379   }
 380
 381   FOR_EACH_OBSERVER(
 382       Listener, listeners_, OnRegistrationFinishedUninstalling(this));
 383 }
 384
 385 void ServiceWorkerRegistration::OnRestoreFinished(
 386     const StatusCallback& callback,
 387     scoped_refptr<ServiceWorkerVersion> version,
 388     ServiceWorkerStatusCode status) {
 389   if (!context_) {
 390     callback.Run(SERVICE_WORKER_ERROR_ABORT);
 391     return;
 392   }
 393   context_->storage()->NotifyDoneInstallingRegistration(
 394       this, version.get(), status);
 395   callback.Run(status);
 396 }
 397
 398 }  // namespace content