/* -*- 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 "mozilla/glean/bindings/Ping.h"
#include "mozilla/AppShutdown.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/Components.h"
#include "nsIClassInfoImpl.h"
#include "nsTHashMap.h"
#include "nsString.h"
namespace mozilla::glean {
namespace impl {
using CallbackMapType = nsTHashMap<uint32_t, FalliblePingTestCallback>;
using MetricIdToCallbackMutex = StaticDataMutex<UniquePtr<CallbackMapType>>;
static Maybe<MetricIdToCallbackMutex::AutoLock> GetCallbackMapLock() {
static MetricIdToCallbackMutex sCallbacks(
"sCallbacks");
auto lock = sCallbacks.Lock();
// Test callbacks will continue to work until the end of AppShutdownTelemetry
if (AppShutdown::IsInOrBeyond(ShutdownPhase::XPCOMWillShutdown)) {
return Nothing();
}
if (!*lock) {
*lock = MakeUnique<CallbackMapType>();
RunOnShutdown(
[&] {
auto lock = sCallbacks.Lock();
*lock = nullptr;
// deletes, see UniquePtr.h
},
ShutdownPhase::XPCOMWillShutdown);
}
return Some(std::move(lock));
}
void Ping::Submit(
const nsACString& aReason)
const {
(
void)SubmitInternal(aReason);
}
nsresult Ping::SubmitInternal(
const nsACString& aReason)
const {
nsresult rv = NS_OK;
{
auto callback = Maybe<FalliblePingTestCallback>();
GetCallbackMapLock().apply(
[&](
const auto& lock) { callback = lock.ref()->Extract(mId); });
// Calling the callback outside of the lock allows it to register a new
// callback itself.
if (callback) {
rv = callback.extract()(aReason);
}
}
fog_submit_ping_by_id(mId, &aReason);
return rv;
}
void Ping::SetEnabled(
bool aValue)
const {
fog_set_ping_enabled_by_id(mId, aValue);
}
void Ping::TestBeforeNextSubmit(PingTestCallback&& aCallback)
const {
TestBeforeNextSubmitFallible(
[callback = std::move(aCallback)](
const nsACString& aReason) -> nsresult {
callback(aReason);
return NS_OK;
});
}
void Ping::TestBeforeNextSubmitFallible(
FalliblePingTestCallback&& aCallback)
const {
{
GetCallbackMapLock().apply(
[&](
const auto& lock) { lock.ref()->InsertOrUpdate(mId, aCallb
ack); });
}
}
} // namespace impl
NS_IMPL_CLASSINFO(GleanPing, nullptr, 0, {0})
NS_IMPL_ISUPPORTS_CI(GleanPing, nsIGleanPing)
NS_IMETHODIMP
GleanPing::Submit(const nsACString& aReason) {
return mPing.SubmitInternal(aReason);
}
NS_IMETHODIMP
GleanPing::SetEnabled(bool aValue) {
mPing.SetEnabled(aValue);
return NS_OK;
}
NS_IMETHODIMP
GleanPing::TestBeforeNextSubmit(nsIGleanPingTestCallback* aCallback) {
if (NS_WARN_IF(!aCallback)) {
return NS_ERROR_INVALID_ARG;
}
// Throw the bare ptr into a COM ptr to keep it around in the lambda.
mPing.TestBeforeNextSubmitFallible(
[callback = nsCOMPtr(aCallback)](const nsACString& aReason) -> nsresult {
return callback->Call(aReason);
});
return NS_OK;
}
} // namespace mozilla::glean