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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chromecast/common/chromecast_config.h"
#include <string>
#include "base/command_line.h"
#include "base/files/file_util.h"
#include "base/logging.h"
#include "base/path_service.h"
#include "base/prefs/json_pref_store.h"
#include "base/prefs/pref_registry_simple.h"
#include "base/prefs/pref_service_factory.h"
#include "base/prefs/pref_store.h"
#include "base/strings/string_number_conversions.h"
#include "chromecast/common/cast_paths.h"
#include "chromecast/common/pref_names.h"
namespace chromecast {
namespace {
// Config file IO worker constants.
const int kNumOfConfigFileIOWorkers = 1;
const char kNameOfConfigFileIOWorkers[] = "ConfigFileIO";
void UserPrefsLoadError(
PersistentPrefStore::PrefReadError* error_val,
PersistentPrefStore::PrefReadError error) {
DCHECK(error_val);
*error_val = error;
}
base::FilePath GetConfigPath() {
base::FilePath config_path;
CHECK(PathService::Get(FILE_CAST_CONFIG, &config_path));
return config_path;
}
} // namespace
// static
ChromecastConfig* ChromecastConfig::g_instance_ = NULL;
// static
void ChromecastConfig::Create(PrefRegistrySimple* registry) {
DCHECK(g_instance_ == NULL);
g_instance_ = new ChromecastConfig();
g_instance_->Load(registry);
}
// static
ChromecastConfig* ChromecastConfig::GetInstance() {
DCHECK(g_instance_ != NULL);
return g_instance_;
}
ChromecastConfig::ChromecastConfig()
: config_path_(GetConfigPath()),
worker_pool_(new base::SequencedWorkerPool(kNumOfConfigFileIOWorkers,
kNameOfConfigFileIOWorkers)) {
}
ChromecastConfig::~ChromecastConfig() {
// Explict writing before worker_pool shutdown.
pref_service_->CommitPendingWrite();
worker_pool_->Shutdown();
}
bool ChromecastConfig::Load(PrefRegistrySimple* registry) {
DCHECK(thread_checker_.CalledOnValidThread());
VLOG(1) << "Loading config from " << config_path_.value();
registry->RegisterIntegerPref(prefs::kRemoteDebuggingPort, 0);
RegisterPlatformPrefs(registry);
PersistentPrefStore::PrefReadError prefs_read_error =
PersistentPrefStore::PREF_READ_ERROR_NONE;
base::PrefServiceFactory prefServiceFactory;
scoped_refptr<base::SequencedTaskRunner> task_runner =
JsonPrefStore::GetTaskRunnerForFile(config_path_, worker_pool_.get());
prefServiceFactory.SetUserPrefsFile(config_path_, task_runner.get());
prefServiceFactory.set_async(false);
prefServiceFactory.set_read_error_callback(
base::Bind(&UserPrefsLoadError, &prefs_read_error));
pref_service_ = prefServiceFactory.Create(registry);
if (prefs_read_error == PersistentPrefStore::PREF_READ_ERROR_NONE) {
return true;
} else {
LOG(ERROR) << "Cannot initialize chromecast config: "
<< config_path_.value()
<< ", pref_error=" << prefs_read_error;
return false;
}
}
void ChromecastConfig::Save() const {
DCHECK(thread_checker_.CalledOnValidThread());
VLOG(1) << "Saving config to: " << config_path_.value();
pref_service_->CommitPendingWrite();
}
const std::string ChromecastConfig::GetValue(const std::string& key) const {
DCHECK(thread_checker_.CalledOnValidThread());
return pref_service_->GetString(key.c_str());
}
const int ChromecastConfig::GetIntValue(const std::string& key) const {
return pref_service_->GetInteger(key.c_str());
}
void ChromecastConfig::SetValue(
const std::string& key,
const std::string& value) const {
DCHECK(thread_checker_.CalledOnValidThread());
if (pref_service_->IsUserModifiablePreference(key.c_str())) {
VLOG(1) << "Set config: key=" << key << ", value=" << value;
pref_service_->SetString(key.c_str(), value);
} else {
LOG(ERROR) << "Cannot set read-only config: key=" << key
<< ", value=" << value;
}
}
void ChromecastConfig::SetIntValue(const std::string& key, int value) const {
DCHECK(thread_checker_.CalledOnValidThread());
if (pref_service_->IsUserModifiablePreference(key.c_str())) {
VLOG(1) << "Set config: key=" << key << ", value=" << value;
pref_service_->SetInteger(key.c_str(), value);
} else {
LOG(ERROR) << "Cannot set read-only config: key=" << key
<< ", value=" << value;
}
}
bool ChromecastConfig::HasValue(const std::string& key) const {
DCHECK(thread_checker_.CalledOnValidThread());
return pref_service_->HasPrefPath(key.c_str());
}
} // namespace chromecast
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