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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/metrics/network_quality_estimator_provider_impl.h"
#include "base/functional/bind.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/single_thread_task_runner.h"
#include "build/build_config.h"
#include "chrome/browser/browser_process.h"
#include "content/public/browser/browser_thread.h"
namespace metrics {
NetworkQualityEstimatorProviderImpl::NetworkQualityEstimatorProviderImpl() {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
}
NetworkQualityEstimatorProviderImpl::~NetworkQualityEstimatorProviderImpl() {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
if (callback_) {
g_browser_process->network_quality_tracker()
->RemoveEffectiveConnectionTypeObserver(this);
}
}
void NetworkQualityEstimatorProviderImpl::PostReplyOnNetworkQualityChanged(
base::RepeatingCallback<void(net::EffectiveConnectionType)> callback) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
if (!content::BrowserThread::IsThreadInitialized(
content::BrowserThread::IO)) {
// IO thread is not yet initialized. Try again in the next message pump.
bool task_posted =
base::SingleThreadTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE, base::BindOnce(&NetworkQualityEstimatorProviderImpl::
PostReplyOnNetworkQualityChanged,
weak_ptr_factory_.GetWeakPtr(),
std::move(callback)));
DCHECK(task_posted);
return;
}
#if BUILDFLAG(IS_ANDROID)
// TODO(tbansal): https://crbug.com/898304: Tasks posted at BEST_EFFORT
// may take up to ~20 seconds to execute. Figure out a way to call
// g_browser_process->network_quality_tracker earlier rather than waiting for
// BEST_EFFORT to run (which happens sometime after startup is completed)
content::BrowserThread::PostBestEffortTask(
FROM_HERE, base::SequencedTaskRunner::GetCurrentDefault(),
base::BindOnce(&NetworkQualityEstimatorProviderImpl::
AddEffectiveConnectionTypeObserverNow,
weak_ptr_factory_.GetWeakPtr(), std::move(callback)));
return;
#else
bool task_posted =
base::SingleThreadTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE,
base::BindOnce(&NetworkQualityEstimatorProviderImpl::
AddEffectiveConnectionTypeObserverNow,
weak_ptr_factory_.GetWeakPtr(), std::move(callback)));
DCHECK(task_posted);
#endif
}
void NetworkQualityEstimatorProviderImpl::AddEffectiveConnectionTypeObserverNow(
base::RepeatingCallback<void(net::EffectiveConnectionType)> callback) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
DCHECK(!callback_);
callback_ = callback;
g_browser_process->network_quality_tracker()
->AddEffectiveConnectionTypeObserver(this);
}
void NetworkQualityEstimatorProviderImpl::OnEffectiveConnectionTypeChanged(
net::EffectiveConnectionType type) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
callback_.Run(type);
}
} // namespace metrics
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