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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ASH_POLICY_REPORTING_INSTALL_EVENT_LOGGER_BASE_H_
#define CHROME_BROWSER_ASH_POLICY_REPORTING_INSTALL_EVENT_LOGGER_BASE_H_
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/system/sys_info.h"
#include "base/task/task_traits.h"
#include "base/task/thread_pool.h"
#include "chrome/browser/profiles/profile.h"
#include "chromeos/ash/components/disks/disk.h"
#include "chromeos/ash/components/disks/disk_mount_manager.h"
#include "chromeos/ash/experiences/arc/arc_prefs.h"
#include "chromeos/dbus/power/power_manager_client.h"
#include "components/prefs/pref_service.h"
#include "services/network/public/cpp/network_connection_tracker.h"
namespace policy {
// Contains shared functionality to manage logs of install events
// (of type Event) for apps keyed by AppId.
// The term |app| in this class refers to ARC++ apps as well as extensions.
template <class Event, class EventType, class AppId>
class InstallEventLoggerBase {
public:
explicit InstallEventLoggerBase(Profile* profile) : profile_(profile) {
stateful_path_ = ash::disks::GetStatefulPartitionPath();
}
std::unique_ptr<Event> CreateEvent(EventType type) {
std::unique_ptr<Event> event = std::make_unique<Event>();
EnsureTimestampSet(event.get());
event->set_event_type(type);
return event;
}
void EnsureTimestampSet(Event* event) {
if (!event->has_timestamp()) {
event->set_timestamp(
(base::Time::Now() - base::Time::UnixEpoch()).InMicroseconds());
}
}
// Return all elements that are members of |first| but not |second|.
std::set<AppId> GetDifference(const std::set<AppId>& first,
const std::set<AppId>& second) {
std::set<AppId> difference;
std::set_difference(first.begin(), first.end(), second.begin(),
second.end(),
std::inserter(difference, difference.end()));
return difference;
}
void AddForSetOfAppsWithDiskSpaceInfo(const std::set<AppId>& ids,
std::unique_ptr<Event> event) {
base::ThreadPool::PostTaskAndReplyWithResult(
FROM_HERE, {base::MayBlock()},
base::BindOnce(&AddDiskSpaceInfoToEvent, std::move(event),
stateful_path_),
base::BindOnce(&InstallEventLoggerBase::AddForSetOfApps,
weak_factory_.GetWeakPtr(), ids));
}
static std::unique_ptr<Event> AddDiskSpaceInfoToEvent(
std::unique_ptr<Event> event,
const base::FilePath& stateful_path) {
const int64_t stateful_total =
base::SysInfo::AmountOfTotalDiskSpace(stateful_path);
if (stateful_total >= 0) {
event->set_stateful_total(stateful_total);
}
const int64_t stateful_free =
base::SysInfo::AmountOfFreeDiskSpace(stateful_path);
if (stateful_free >= 0) {
event->set_stateful_free(stateful_free);
}
return event;
}
// Set stateful partition path for unit tests.
void SetStatefulPathForTesting(const base::FilePath& path) {
stateful_path_ = path;
}
protected:
// The profile whose install requests to log.
// This applies both to ARC++ apps and extensions.
const raw_ptr<Profile> profile_;
// Adds |event| to the log for all apps in |ids|.
virtual void AddForSetOfApps(const std::set<AppId>& ids,
std::unique_ptr<Event> event) = 0;
void AddEvent(const AppId& appId,
bool gather_disk_space_info,
std::unique_ptr<Event>& event) {
EnsureTimestampSet(event.get());
if (gather_disk_space_info) {
AddForSetOfAppsWithDiskSpaceInfo({appId}, std::move(event));
} else {
AddForSetOfApps({appId}, std::move(event));
}
}
private:
// Path for stateful partition.
base::FilePath stateful_path_;
// Weak factory used to reference |this| from background tasks.
base::WeakPtrFactory<InstallEventLoggerBase> weak_factory_{this};
};
} // namespace policy
#endif // CHROME_BROWSER_ASH_POLICY_REPORTING_INSTALL_EVENT_LOGGER_BASE_H_
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