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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 "MLSFallback.h"
#include "GeolocationPosition.h"
#include "mozilla/Logging.h"
#include "mozilla/glean/DomGeolocationMetrics.h"
#include "nsComponentManagerUtils.h"
#include "nsIGeolocationProvider.h"
#include "nsServiceManagerUtils.h"
extern mozilla::LazyLogModule gGeolocationLog;
NS_IMPL_ISUPPORTS(MLSFallback, nsITimerCallback, nsINamed)
MLSFallback::MLSFallback(uint32_t delay) : mDelayMs(delay) {}
MLSFallback::~MLSFallback() = default;
mozilla::glean::geolocation::FallbackLabel MapReasonToLabel(
MLSFallback::FallbackReason aReason) {
switch (aReason) {
case MLSFallback::FallbackReason::Error:
return mozilla::glean::geolocation::FallbackLabel::eOnError;
case MLSFallback::FallbackReason::Timeout:
return mozilla::glean::geolocation::FallbackLabel::eOnTimeout;
default:
MOZ_CRASH("Unexpected fallback reason");
return mozilla::glean::geolocation::FallbackLabel::eOnError;
}
}
nsresult MLSFallback::Startup(nsIGeolocationUpdate* aWatcher,
FallbackReason aReason) {
if (mHandoffTimer || mMLSFallbackProvider) {
return NS_OK;
}
mUpdateWatcher = aWatcher;
// No need to schedule a timer callback if there is no startup delay.
if (mDelayMs == 0) {
mozilla::glean::geolocation::fallback.EnumGet(MapReasonToLabel(aReason))
.Add();
return CreateMLSFallbackProvider();
}
return NS_NewTimerWithCallback(getter_AddRefs(mHandoffTimer), this, mDelayMs,
nsITimer::TYPE_ONE_SHOT);
}
nsresult MLSFallback::Shutdown(ShutdownReason aReason) {
if (aReason == ShutdownReason::ProviderResponded) {
mozilla::glean::geolocation::fallback
.EnumGet(mozilla::glean::geolocation::FallbackLabel::eNone)
.Add();
}
mUpdateWatcher = nullptr;
if (mHandoffTimer) {
mHandoffTimer->Cancel();
mHandoffTimer = nullptr;
}
nsresult rv = NS_OK;
if (mMLSFallbackProvider) {
rv = mMLSFallbackProvider->Shutdown();
mMLSFallbackProvider = nullptr;
}
return rv;
}
NS_IMETHODIMP
MLSFallback::Notify(nsITimer* aTimer) {
mozilla::glean::geolocation::fallback
.EnumGet(mozilla::glean::geolocation::FallbackLabel::eOnTimeout)
.Add();
return CreateMLSFallbackProvider();
}
NS_IMETHODIMP
MLSFallback::GetName(nsACString& aName) {
aName.AssignLiteral("MLSFallback");
return NS_OK;
}
nsresult MLSFallback::CreateMLSFallbackProvider() {
if (mMLSFallbackProvider || !mUpdateWatcher) {
return NS_OK;
}
MOZ_LOG(gGeolocationLog, mozilla::LogLevel::Debug,
("Falling back to NetworkLocationProvider"));
nsresult rv;
mMLSFallbackProvider =
do_CreateInstance("@mozilla.org/geolocation/mls-provider;1", &rv);
NS_ENSURE_SUCCESS(rv, rv);
if (mMLSFallbackProvider) {
rv = mMLSFallbackProvider->Startup();
if (NS_SUCCEEDED(rv)) {
MOZ_LOG(gGeolocationLog, mozilla::LogLevel::Debug,
("Successfully started up NetworkLocationProvider"));
mMLSFallbackProvider->Watch(mUpdateWatcher);
}
}
mUpdateWatcher = nullptr;
return rv;
}
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