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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "services/network/network_qualities_pref_delegate.h"
#include <memory>
#include <string>
#include "base/functional/bind.h"
#include "base/memory/ptr_util.h"
#include "base/memory/raw_ptr.h"
#include "base/metrics/histogram_macros.h"
#include "base/values.h"
#include "components/prefs/pref_registry.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/pref_service.h"
#include "net/http/http_server_properties.h"
#include "net/nqe/network_quality_estimator.h"
#include "net/nqe/pref_names.h"
namespace {
// PrefDelegateImpl writes the provided dictionary value to the network quality
// estimator prefs on the disk.
class PrefDelegateImpl
: public net::NetworkQualitiesPrefsManager::PrefDelegate {
public:
// |pref_service| is used to read and write prefs from/to the disk.
explicit PrefDelegateImpl(PrefService* pref_service)
: pref_service_(pref_service), path_(net::nqe::kNetworkQualities) {
DCHECK(pref_service_);
}
PrefDelegateImpl(const PrefDelegateImpl&) = delete;
PrefDelegateImpl& operator=(const PrefDelegateImpl&) = delete;
~PrefDelegateImpl() override {}
void SetDictionaryValue(const base::Value::Dict& dict) override {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
pref_service_->SetDict(path_, dict.Clone());
}
base::Value::Dict GetDictionaryValue() override {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
return pref_service_->GetDict(path_).Clone();
}
private:
raw_ptr<PrefService> pref_service_;
// |path_| is the location of the network quality estimator prefs.
const std::string path_;
SEQUENCE_CHECKER(sequence_checker_);
};
// Returns true if |pref_service| has been initialized.
bool IsPrefServiceInitialized(PrefService* pref_service) {
return pref_service->GetInitializationStatus() !=
PrefService::INITIALIZATION_STATUS_WAITING;
}
} // namespace
namespace network {
NetworkQualitiesPrefDelegate::NetworkQualitiesPrefDelegate(
PrefService* pref_service,
net::NetworkQualityEstimator* network_quality_estimator)
: prefs_manager_(std::make_unique<PrefDelegateImpl>(pref_service)),
network_quality_estimator_(network_quality_estimator) {
DCHECK(pref_service);
DCHECK(network_quality_estimator_);
if (IsPrefServiceInitialized(pref_service)) {
OnPrefServiceInitialized(true);
} else {
// Register for a callback that will be invoked when |pref_service| is
// initialized.
pref_service->AddPrefInitObserver(
base::BindOnce(&NetworkQualitiesPrefDelegate::OnPrefServiceInitialized,
weak_ptr_factory_.GetWeakPtr()));
}
}
NetworkQualitiesPrefDelegate::~NetworkQualitiesPrefDelegate() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
}
void NetworkQualitiesPrefDelegate::OnPrefServiceInitialized(bool success) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
prefs_manager_.InitializeOnNetworkThread(network_quality_estimator_);
}
void NetworkQualitiesPrefDelegate::ClearPrefs() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
prefs_manager_.ClearPrefs();
}
// static
void NetworkQualitiesPrefDelegate::RegisterPrefs(PrefRegistrySimple* registry) {
registry->RegisterDictionaryPref(net::nqe::kNetworkQualities);
}
std::map<net::nqe::internal::NetworkID,
net::nqe::internal::CachedNetworkQuality>
NetworkQualitiesPrefDelegate::ForceReadPrefsForTesting() const {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
return prefs_manager_.ForceReadPrefsForTesting();
}
} // namespace network
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