gecko-dev/dom/serviceworkers/RemoteServiceWorkerRegistrationImpl.cpp

/* -*- 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 "RemoteServiceWorkerRegistrationImpl.h"

#include "ServiceWorkerRegistrationChild.h"

namespace mozilla {
namespace dom {

using mozilla::ipc::IPCResult;
using mozilla::ipc::ResponseRejectReason;

RemoteServiceWorkerRegistrationImpl::~RemoteServiceWorkerRegistrationImpl()
{
  MOZ_DIAGNOSTIC_ASSERT(!mOuter);
  Shutdown();
}

void
RemoteServiceWorkerRegistrationImpl::Shutdown()
{
  if (mShutdown) {
    return;
  }
  mShutdown = true;

  if (mActor) {
    mActor->RevokeOwner(this);
    mActor->MaybeStartTeardown();
    mActor = nullptr;
  }
}

void
RemoteServiceWorkerRegistrationImpl::SetServiceWorkerRegistration(ServiceWorkerRegistration* aReg)
{
  NS_ASSERT_OWNINGTHREAD(RemoteServiceWorkerRegistrationImpl);
  MOZ_DIAGNOSTIC_ASSERT(!mOuter);
  MOZ_DIAGNOSTIC_ASSERT(aReg);
  mOuter = aReg;
}

void
RemoteServiceWorkerRegistrationImpl::ClearServiceWorkerRegistration(ServiceWorkerRegistration* aReg)
{
  NS_ASSERT_OWNINGTHREAD(RemoteServiceWorkerRegistrationImpl);
  MOZ_DIAGNOSTIC_ASSERT(mOuter);
  MOZ_DIAGNOSTIC_ASSERT(aReg == mOuter);
  mOuter = nullptr;
}

void
RemoteServiceWorkerRegistrationImpl::Update(ServiceWorkerRegistrationCallback&& aSuccessCB,
                                            ServiceWorkerFailureCallback&& aFailureCB)
{
  if (!mActor) {
    aFailureCB(CopyableErrorResult(NS_ERROR_DOM_INVALID_STATE_ERR));
    return;
  }

  mActor->SendUpdate(
    [successCB = std::move(aSuccessCB), aFailureCB]
    (const IPCServiceWorkerRegistrationDescriptorOrCopyableErrorResult& aResult) {
      if (aResult.type() == IPCServiceWorkerRegistrationDescriptorOrCopyableErrorResult::TCopyableErrorResult) {
        // application layer error
        auto& rv = aResult.get_CopyableErrorResult();
        MOZ_DIAGNOSTIC_ASSERT(rv.Failed());
        aFailureCB(CopyableErrorResult(rv));
        return;
      }
      // success
      auto& ipcDesc = aResult.get_IPCServiceWorkerRegistrationDescriptor();
      successCB(ServiceWorkerRegistrationDescriptor(ipcDesc));
    }, [aFailureCB] (ResponseRejectReason aReason) {
      // IPC layer error
      aFailureCB(CopyableErrorResult(NS_ERROR_DOM_INVALID_STATE_ERR));
    });
}

void
RemoteServiceWorkerRegistrationImpl::Unregister(ServiceWorkerBoolCallback&& aSuccessCB,
                                                ServiceWorkerFailureCallback&& aFailureCB)
{
  if (!mActor) {
    aFailureCB(CopyableErrorResult(NS_ERROR_DOM_INVALID_STATE_ERR));
    return;
  }

  mActor->SendUnregister(
    [successCB = std::move(aSuccessCB), aFailureCB]
    (Tuple<bool, CopyableErrorResult>&& aResult) {
    if (Get<1>(aResult).Failed()) {
      // application layer error
      aFailureCB(Get<1>(aResult));
      return;
    }
    // success
    successCB(Get<0>(aResult));
  }, [aFailureCB] (ResponseRejectReason aReason) {
    // IPC layer error
    aFailureCB(CopyableErrorResult(NS_ERROR_DOM_INVALID_STATE_ERR));
  });
}

RemoteServiceWorkerRegistrationImpl::RemoteServiceWorkerRegistrationImpl(const ServiceWorkerRegistrationDescriptor& aDescriptor)
  : mActor(nullptr)
  , mOuter(nullptr)
  , mShutdown(false)
{
  PBackgroundChild* parentActor = BackgroundChild::GetOrCreateForCurrentThread();
  if (NS_WARN_IF(!parentActor)) {
    Shutdown();
    return;
  }

  RefPtr<WorkerHolderToken> workerHolderToken;
  if (!NS_IsMainThread()) {
    WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
    MOZ_DIAGNOSTIC_ASSERT(workerPrivate);

    workerHolderToken =
      WorkerHolderToken::Create(workerPrivate, Canceling,
                                WorkerHolderToken::AllowIdleShutdownStart);

    if (NS_WARN_IF(!workerHolderToken)) {
      Shutdown();
      return;
    }
  }

  ServiceWorkerRegistrationChild* actor =
    new ServiceWorkerRegistrationChild(workerHolderToken);
  PServiceWorkerRegistrationChild* sentActor =
    parentActor->SendPServiceWorkerRegistrationConstructor(actor, aDescriptor.ToIPC());
  if (NS_WARN_IF(!sentActor)) {
    Shutdown();
    return;
  }
  MOZ_DIAGNOSTIC_ASSERT(sentActor == actor);

  mActor = actor;
  mActor->SetOwner(this);
}

void
RemoteServiceWorkerRegistrationImpl::RevokeActor(ServiceWorkerRegistrationChild* aActor)
{
  MOZ_DIAGNOSTIC_ASSERT(mActor);
  MOZ_DIAGNOSTIC_ASSERT(mActor == aActor);
  mActor->RevokeOwner(this);
  mActor = nullptr;

  mShutdown = true;

  if (mOuter) {
    mOuter->RegistrationRemoved();
  }
}

void
RemoteServiceWorkerRegistrationImpl::UpdateState(const ServiceWorkerRegistrationDescriptor& aDescriptor)
{
  if (mOuter) {
    mOuter->UpdateState(aDescriptor);
  }
}

} // namespace dom
} // namespace mozilla