gecko-dev/dom/workers/ServiceWorkerPeriodicUpdate...

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/* -*- 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 "ServiceWorkerPeriodicUpdater.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/unused.h"
#include "mozilla/Services.h"
#include "mozilla/Preferences.h"
#include "mozilla/dom/ContentParent.h"
#include "nsIServiceWorkerManager.h"
#define OBSERVER_TOPIC_IDLE_DAILY "idle-daily"
namespace mozilla {
namespace dom {
namespace workers {
NS_IMPL_ISUPPORTS(ServiceWorkerPeriodicUpdater, nsIObserver)
StaticRefPtr<ServiceWorkerPeriodicUpdater>
ServiceWorkerPeriodicUpdater::sInstance;
bool
ServiceWorkerPeriodicUpdater::sPeriodicUpdatesEnabled = true;
already_AddRefed<ServiceWorkerPeriodicUpdater>
ServiceWorkerPeriodicUpdater::GetSingleton()
{
MOZ_ASSERT(XRE_GetProcessType() == GeckoProcessType_Default);
if (!sInstance) {
sInstance = new ServiceWorkerPeriodicUpdater();
ClearOnShutdown(&sInstance);
}
nsRefPtr<ServiceWorkerPeriodicUpdater> copy(sInstance.get());
return copy.forget();
}
ServiceWorkerPeriodicUpdater::ServiceWorkerPeriodicUpdater()
{
Preferences::AddBoolVarCache(&sPeriodicUpdatesEnabled,
"dom.serviceWorkers.periodic-updates.enabled",
true);
}
ServiceWorkerPeriodicUpdater::~ServiceWorkerPeriodicUpdater()
{
}
NS_IMETHODIMP
ServiceWorkerPeriodicUpdater::Observe(nsISupports* aSubject,
const char* aTopic,
const char16_t* aData)
{
// In tests, the pref is set to false so that the idle-daily service does not
// trigger updates leading to intermittent failures.
// We're called from SpecialPowers inside tests, in which case we need to
// update during the test run, for which we use a non-empty aData.
NS_NAMED_LITERAL_STRING(CallerSpecialPowers, "Caller:SpecialPowers");
if (strcmp(aTopic, OBSERVER_TOPIC_IDLE_DAILY) == 0 &&
(sPeriodicUpdatesEnabled || (aData && CallerSpecialPowers.Equals(aData)))) {
// First, update all registrations in the parent process.
nsCOMPtr<nsIServiceWorkerManager> swm =
mozilla::services::GetServiceWorkerManager();
if (swm) {
swm->UpdateAllRegistrations();
}
// Now, tell all child processes to update their registrations as well.
nsTArray<ContentParent*> children;
ContentParent::GetAll(children);
for (uint32_t i = 0; i < children.Length(); i++) {
unused << children[i]->SendUpdateServiceWorkerRegistrations();
}
}
return NS_OK;
}
} // namespace workers
} // namespace dom
} // namespace mozilla