Quelle ServiceWorkerRegistrationProxy.cpp Sprache: C

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "ServiceWorkerRegistrationProxy.h"

#include "mozilla/SchedulerGroup.h"
#include "mozilla/ScopeExit.h"
#include "mozilla/ipc/BackgroundParent.h"
#include "ServiceWorkerManager.h"
#include "ServiceWorkerRegistrationParent.h"
#include "ServiceWorkerUnregisterCallback.h"

namespace mozilla::dom {

using mozilla::ipc::AssertIsOnBackgroundThread;

class ServiceWorkerRegistrationProxy::DelayedUpdate final
    : public nsITimerCallback,
      public nsINamed {
  RefPtr<ServiceWorkerRegistrationProxy> mProxy;
  RefPtr<ServiceWorkerRegistrationPromise::Private> mPromise;
  nsCOMPtr<nsITimer> mTimer;
  nsCString mNewestWorkerScriptUrl;

  ~DelayedUpdate() = default;

public:
  NS_DECL_THREADSAFE_ISUPPORTS
  NS_DECL_NSITIMERCALLBACK
  NS_DECL_NSINAMED

  DelayedUpdate(RefPtr<ServiceWorkerRegistrationProxy>&& aProxy,
                RefPtr<ServiceWorkerRegistrationPromise::Private>&& aPromise,
                nsCString&& aNewestWorkerScriptUrl, uint32_t delay);

  void ChainTo(RefPtr<ServiceWorkerRegistrationPromise::Private> aPromise);

  void Reject();

  void SetNewestWorkerScriptUrl(nsCString&& aNewestWorkerScriptUrl);
};

ServiceWorkerRegistrationProxy::~ServiceWorkerRegistrationProxy() {
  // Any thread
  MOZ_DIAGNOSTIC_ASSERT(!mActor);
  MOZ_DIAGNOSTIC_ASSERT(!mReg);
}

void ServiceWorkerRegistrationProxy::MaybeShutdownOnBGThread() {
  AssertIsOnBackgroundThread();
  if (!mActor) {
    return;
  }
  mActor->MaybeSendDelete();
}

void ServiceWorkerRegistrationProxy::UpdateStateOnBGThread(
    const ServiceWorkerRegistrationDescriptor& aDescriptor) {
  AssertIsOnBackgroundThread();
  if (!mActor) {
    return;
  }
  Unused << mActor->SendUpdateState(aDescriptor.ToIPC());
}

void ServiceWorkerRegistrationProxy::FireUpdateFoundOnBGThread() {
  AssertIsOnBackgroundThread();
  if (!mActor) {
    return;
  }
  Unused << mActor->SendFireUpdateFound();
}

void ServiceWorkerRegistrationProxy::InitOnMainThread() {
  AssertIsOnMainThread();

  auto scopeExit = MakeScopeExit([&] { MaybeShutdownOnMainThread(); });

  RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
  NS_ENSURE_TRUE_VOID(swm);

  RefPtr<ServiceWorkerRegistrationInfo> reg =
      swm->GetRegistration(mDescriptor.PrincipalInfo(), mDescriptor.Scope());
  NS_ENSURE_TRUE_VOID(reg);

  if (reg->Id() != mDescriptor.Id()) {
    // This registration has already been replaced by another one.
    return;
  }

  scopeExit.release();

  mReg = new nsMainThreadPtrHolder<ServiceWorkerRegistrationInfo>(
      "ServiceWorkerRegistrationProxy::mInfo", reg);

  mReg->AddInstance(this, mDescriptor);
}

void ServiceWorkerRegistrationProxy::MaybeShutdownOnMainThread() {
  AssertIsOnMainThread();

  if (mDelayedUpdate) {
    mDelayedUpdate->Reject();
    mDelayedUpdate = nullptr;
  }
  nsCOMPtr<nsIRunnable> r = NewRunnableMethod(
      __func__, this, &ServiceWorkerRegistrationProxy::MaybeShutdownOnBGThread);

  MOZ_ALWAYS_SUCCEEDS(mEventTarget->Dispatch(r.forget(), NS_DISPATCH_NORMAL));
}

void ServiceWorkerRegistrationProxy::StopListeningOnMainThread() {
  AssertIsOnMainThread();

  if (!mReg) {
    return;
  }

  mReg->RemoveInstance(this);
  mReg = nullptr;
}

void ServiceWorkerRegistrationProxy::UpdateState(
    const ServiceWorkerRegistrationDescriptor& aDescriptor) {
  AssertIsOnMainThread();

  if (mDescriptor == aDescriptor) {
    return;
  }
  mDescriptor = aDescriptor;

  nsCOMPtr<nsIRunnable> r =
      NewRunnableMethod<ServiceWorkerRegistrationDescriptor>(
          __func__, this,
          &ServiceWorkerRegistrationProxy::UpdateStateOnBGThread, aDescriptor);

  MOZ_ALWAYS_SUCCEEDS(mEventTarget->Dispatch(r.forget(), NS_DISPATCH_NORMAL));
}

void ServiceWorkerRegistrationProxy::FireUpdateFound() {
  AssertIsOnMainThread();

  nsCOMPtr<nsIRunnable> r = NewRunnableMethod(
      __func__, this,
      &ServiceWorkerRegistrationProxy::FireUpdateFoundOnBGThread);

  MOZ_ALWAYS_SUCCEEDS(mEventTarget->Dispatch(r.forget(), NS_DISPATCH_NORMAL));
}

void ServiceWorkerRegistrationProxy::RegistrationCleared() {
  MaybeShutdownOnMainThread();
}

void ServiceWorkerRegistrationProxy::GetScope(nsAString& aScope) const {
  CopyUTF8toUTF16(mDescriptor.Scope(), aScope);
}

bool ServiceWorkerRegistrationProxy::MatchesDescriptor(
    const ServiceWorkerRegistrationDescriptor& aDescriptor) {
  AssertIsOnMainThread();
  return aDescriptor.Id() == mDescriptor.Id() &&
         aDescriptor.PrincipalInfo() == mDescriptor.PrincipalInfo() &&
         aDescriptor.Scope() == mDescriptor.Scope();
}

ServiceWorkerRegistrationProxy::ServiceWorkerRegistrationProxy(
    const ServiceWorkerRegistrationDescriptor& aDescriptor,
    const ClientInfo& aForClient)
    : mEventTarget(GetCurrentSerialEventTarget()),
      mDescriptor(aDescriptor),
      mListeningClientInfo(aForClient) {}

void ServiceWorkerRegistrationProxy::Init(
    ServiceWorkerRegistrationParent* aActor) {
  AssertIsOnBackgroundThread();
  MOZ_DIAGNOSTIC_ASSERT(aActor);
  MOZ_DIAGNOSTIC_ASSERT(!mActor);
  MOZ_DIAGNOSTIC_ASSERT(mEventTarget);

  mActor = aActor;

  // Note, this must be done from a separate Init() method and not in
  // the constructor.  If done from the constructor the runnable can
  // execute, complete, and release its reference before the constructor
  // returns.
  nsCOMPtr<nsIRunnable> r =
      NewRunnableMethod("ServiceWorkerRegistrationProxy::Init", this,
                        &ServiceWorkerRegistrationProxy::InitOnMainThread);
  MOZ_ALWAYS_SUCCEEDS(SchedulerGroup::Dispatch(r.forget()));
}

void ServiceWorkerRegistrationProxy::RevokeActor(
    ServiceWorkerRegistrationParent* aActor) {
  AssertIsOnBackgroundThread();
  MOZ_DIAGNOSTIC_ASSERT(mActor);
  MOZ_DIAGNOSTIC_ASSERT(mActor == aActor);
  mActor = nullptr;

  nsCOMPtr<nsIRunnable> r = NewRunnableMethod(
      __func__, this,
      &ServiceWorkerRegistrationProxy::StopListeningOnMainThread);
  MOZ_ALWAYS_SUCCEEDS(SchedulerGroup::Dispatch(r.forget()));
}

RefPtr<GenericPromise> ServiceWorkerRegistrationProxy::Unregister() {
  AssertIsOnBackgroundThread();

  RefPtr<ServiceWorkerRegistrationProxy> self = this;
  RefPtr<GenericPromise::Private> promise =
      new GenericPromise::Private(__func__);

  nsCOMPtr<nsIRunnable> r =
      NS_NewRunnableFunction(__func__, [self, promise]() mutable {
        nsresult rv = NS_ERROR_DOM_INVALID_STATE_ERR;
        auto scopeExit = MakeScopeExit([&] { promise->Reject(rv, __func__); });

        NS_ENSURE_TRUE_VOID(self->mReg);

        RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
        NS_ENSURE_TRUE_VOID(swm);

        RefPtr<UnregisterCallback> cb = new UnregisterCallback(promise);

        rv = swm->Unregister(self->mReg->Principal(), cb,
                             NS_ConvertUTF8toUTF16(self->mReg->Scope()));
        NS_ENSURE_SUCCESS_VOID(rv);

        scopeExit.release();
      });

  MOZ_ALWAYS_SUCCEEDS(SchedulerGroup::Dispatch(r.forget()));

  return promise;
}

namespace {

class UpdateCallback final : public ServiceWorkerUpdateFinishCallback {
  RefPtr<ServiceWorkerRegistrationPromise::Private> mPromise;

  ~UpdateCallback() = default;

public:
  explicit UpdateCallback(
      RefPtr<ServiceWorkerRegistrationPromise::Private>&& aPromise)
      : mPromise(std::move(aPromise)) {
    MOZ_DIAGNOSTIC_ASSERT(mPromise);
  }

  void UpdateSucceeded(ServiceWorkerRegistrationInfo* aInfo) override {
    mPromise->Resolve(aInfo->Descriptor(), __func__);
  }

  void UpdateFailed(ErrorResult& aResult) override {
    mPromise->Reject(CopyableErrorResult(aResult), __func__);
  }
};

}  // anonymous namespace

NS_IMPL_ISUPPORTS(ServiceWorkerRegistrationProxy::DelayedUpdate,
                  nsITimerCallback, nsINamed)

ServiceWorkerRegistrationProxy::DelayedUpdate::DelayedUpdate(
    RefPtr<ServiceWorkerRegistrationProxy>&& aProxy,
    RefPtr<ServiceWorkerRegistrationPromise::Private>&& aPromise,
    nsCString&& aNewestWorkerScriptUrl, uint32_t delay)
    : mProxy(std::move(aProxy)),
      mPromise(std::move(aPromise)),
      mNewestWorkerScriptUrl(std::move(aNewestWorkerScriptUrl)) {
  MOZ_DIAGNOSTIC_ASSERT(mProxy);
  MOZ_DIAGNOSTIC_ASSERT(mPromise);
  MOZ_ASSERT(!mNewestWorkerScriptUrl.IsEmpty());
  mProxy->mDelayedUpdate = this;
  Result<nsCOMPtr<nsITimer>, nsresult> result =
      NS_NewTimerWithCallback(this, delay, nsITimer::TYPE_ONE_SHOT);
  mTimer = result.unwrapOr(nullptr);
  MOZ_DIAGNOSTIC_ASSERT(mTimer);
}

void ServiceWorkerRegistrationProxy::DelayedUpdate::ChainTo(
    RefPtr<ServiceWorkerRegistrationPromise::Private> aPromise) {
  AssertIsOnMainThread();
  MOZ_ASSERT(mProxy->mDelayedUpdate == this);
  MOZ_ASSERT(mPromise);

  mPromise->ChainTo(aPromise.forget(), __func__);
}

void ServiceWorkerRegistrationProxy::DelayedUpdate::Reject() {
  MOZ_DIAGNOSTIC_ASSERT(mPromise);
  if (mTimer) {
    mTimer->Cancel();
    mTimer = nullptr;
  }
  mPromise->Reject(NS_ERROR_DOM_INVALID_STATE_ERR, __func__);
}

void ServiceWorkerRegistrationProxy::DelayedUpdate::SetNewestWorkerScriptUrl(
    nsCString&& aNewestWorkerScriptUrl) {
  MOZ_ASSERT(NS_IsMainThread());
  mNewestWorkerScriptUrl = std::move(aNewestWorkerScriptUrl);
}

NS_IMETHODIMP
ServiceWorkerRegistrationProxy::DelayedUpdate::Notify(nsITimer* aTimer) {
  // Already shutting down.
  if (mProxy->mDelayedUpdate != this) {
    return NS_OK;
  }

  auto scopeExit = MakeScopeExit(
      [&] { mPromise->Reject(NS_ERROR_DOM_INVALID_STATE_ERR, __func__); });

  NS_ENSURE_TRUE(mProxy->mReg, NS_ERROR_FAILURE);

  RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
  NS_ENSURE_TRUE(swm, NS_ERROR_FAILURE);

  RefPtr<UpdateCallback> cb = new UpdateCallback(std::move(mPromise));
  swm->Update(mProxy->mListeningClientInfo, mProxy->mReg->Principal(),
              mProxy->mReg->Scope(), std::move(mNewestWorkerScriptUrl), cb);

  mTimer = nullptr;
  mProxy->mDelayedUpdate = nullptr;

  scopeExit.release();
  return NS_OK;
}

NS_IMETHODIMP
ServiceWorkerRegistrationProxy::DelayedUpdate::GetName(nsACString& aName) {
  aName.AssignLiteral("ServiceWorkerRegistrationProxy::DelayedUpdate");
  return NS_OK;
}

RefPtr<ServiceWorkerRegistrationPromise> ServiceWorkerRegistrationProxy::Update(
    const nsACString& aNewestWorkerScriptUrl) {
  AssertIsOnBackgroundThread();

  RefPtr<ServiceWorkerRegistrationProxy> self = this;
  RefPtr<ServiceWorkerRegistrationPromise::Private> promise =
      new ServiceWorkerRegistrationPromise::Private(__func__);

  nsCOMPtr<nsIRunnable> r = NS_NewRunnableFunction(
      __func__,
      [self, promise,
       newestWorkerScriptUrl = nsCString(aNewestWorkerScriptUrl)]() mutable {
        auto scopeExit = MakeScopeExit(
            [&] { promise->Reject(NS_ERROR_DOM_INVALID_STATE_ERR, __func__); });

        // Get the delay value for the update
        NS_ENSURE_TRUE_VOID(self->mReg);
        uint32_t delay = self->mReg->GetUpdateDelay(false);

        // If the delay value does not equal to 0, create a timer and a timer
        // callback to perform the delayed update. Otherwise, update directly.
        if (delay) {
          if (self->mDelayedUpdate) {
            // NOTE: if we `ChainTo(),` there will ultimately be a single
            // update, and this update will resolve all promises that were
            // issued while the update's timer was ticking down.
            self->mDelayedUpdate->ChainTo(std::move(promise));

            // Use the "newest newest worker"'s script URL.
            self->mDelayedUpdate->SetNewestWorkerScriptUrl(
                std::move(newestWorkerScriptUrl));
          } else {
            RefPtr<ServiceWorkerRegistrationProxy::DelayedUpdate> du =
                new ServiceWorkerRegistrationProxy::DelayedUpdate(
                    std::move(self), std::move(promise),
                    std::move(newestWorkerScriptUrl), delay);
          }
        } else {
          RefPtr<ServiceWorkerManager> swm =
              ServiceWorkerManager::GetInstance();
          NS_ENSURE_TRUE_VOID(swm);

          RefPtr<UpdateCallback> cb = new UpdateCallback(std::move(promise));
          swm->Update(self->mListeningClientInfo, self->mReg->Principal(),
                      self->mReg->Scope(), std::move(newestWorkerScriptUrl),
                      cb);
        }
        scopeExit.release();
      });

  MOZ_ALWAYS_SUCCEEDS(SchedulerGroup::Dispatch(r.forget()));

  return promise;
}

RefPtr<GenericPromise>
ServiceWorkerRegistrationProxy::SetNavigationPreloadEnabled(
    const bool& aEnabled) {
  AssertIsOnBackgroundThread();

  RefPtr<ServiceWorkerRegistrationProxy> self = this;
  RefPtr<GenericPromise::Private> promise =
      new GenericPromise::Private(__func__);

  nsCOMPtr<nsIRunnable> r =
      NS_NewRunnableFunction(__func__, [aEnabled, self, promise]() mutable {
        nsresult rv = NS_ERROR_DOM_INVALID_STATE_ERR;
        auto scopeExit = MakeScopeExit([&] { promise->Reject(rv, __func__); });

        NS_ENSURE_TRUE_VOID(self->mReg);
        NS_ENSURE_TRUE_VOID(self->mReg->GetActive());

        auto reg = self->mReg;
        reg->SetNavigationPreloadEnabled(aEnabled);

        RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
        NS_ENSURE_TRUE_VOID(swm);
        swm->StoreRegistration(reg->Principal(), reg);

        scopeExit.release();

        promise->Resolve(true, __func__);
      });

  MOZ_ALWAYS_SUCCEEDS(SchedulerGroup::Dispatch(r.forget()));

  return promise;
}

RefPtr<GenericPromise>
ServiceWorkerRegistrationProxy::SetNavigationPreloadHeader(
    const nsACString& aHeader) {
  AssertIsOnBackgroundThread();

  RefPtr<ServiceWorkerRegistrationProxy> self = this;
  RefPtr<GenericPromise::Private> promise =
      new GenericPromise::Private(__func__);

  nsCOMPtr<nsIRunnable> r = NS_NewRunnableFunction(
      __func__, [aHeader = nsCString(aHeader), self, promise]() mutable {
        nsresult rv = NS_ERROR_DOM_INVALID_STATE_ERR;
        auto scopeExit = MakeScopeExit([&] { promise->Reject(rv, __func__); });

        NS_ENSURE_TRUE_VOID(self->mReg);
        NS_ENSURE_TRUE_VOID(self->mReg->GetActive());

        auto reg = self->mReg;
        reg->SetNavigationPreloadHeader(aHeader);

        RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
        NS_ENSURE_TRUE_VOID(swm);
        swm->StoreRegistration(reg->Principal(), reg);

        scopeExit.release();

        promise->Resolve(true, __func__);
      });

  MOZ_ALWAYS_SUCCEEDS(SchedulerGroup::Dispatch(r.forget()));

  return promise;
}

RefPtr<NavigationPreloadStatePromise>
ServiceWorkerRegistrationProxy::GetNavigationPreloadState() {
  AssertIsOnBackgroundThread();

  RefPtr<ServiceWorkerRegistrationProxy> self = this;
  RefPtr<NavigationPreloadStatePromise::Private> promise =
      new NavigationPreloadStatePromise::Private(__func__);

  nsCOMPtr<nsIRunnable> r =
      NS_NewRunnableFunction(__func__, [self, promise]() mutable {
        nsresult rv = NS_ERROR_DOM_INVALID_STATE_ERR;
        auto scopeExit = MakeScopeExit([&] { promise->Reject(rv, __func__); });

        NS_ENSURE_TRUE_VOID(self->mReg);
        scopeExit.release();

        promise->Resolve(self->mReg->GetNavigationPreloadState(), __func__);
      });

  MOZ_ALWAYS_SUCCEEDS(SchedulerGroup::Dispatch(r.forget()));

  return promise;
}

}  // namespace mozilla::dom

quality100%

¤ Dauer der Verarbeitung: 0.15 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.