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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/sync_device_info/device_count_metrics_provider.h"
#include <algorithm>
#include <map>
#include <vector>
#include "base/metrics/histogram_functions.h"
#include "components/sync/protocol/sync_enums.pb.h"
#include "components/sync_device_info/device_info_tracker.h"
namespace syncer {
using DeviceType = DeviceInfo::FormFactor;
DeviceCountMetricsProvider::DeviceCountMetricsProvider(
const ProvideTrackersCallback& provide_trackers)
: provide_trackers_(provide_trackers) {}
DeviceCountMetricsProvider::~DeviceCountMetricsProvider() = default;
void DeviceCountMetricsProvider::ProvideCurrentSessionData(
metrics::ChromeUserMetricsExtension* uma_proto) {
std::vector<const DeviceInfoTracker*> trackers;
provide_trackers_.Run(&trackers);
int max_total = 0;
int max_desktop_count = 0;
int max_phone_count = 0;
int max_tablet_count = 0;
for (auto* tracker : trackers) {
std::map<DeviceType, int> count_by_type =
tracker->CountActiveDevicesByType();
int total_devices = 0;
for (const auto& [device_type, count] : count_by_type) {
total_devices += count;
}
max_total = std::max(max_total, total_devices);
max_desktop_count = std::max(
max_desktop_count, count_by_type[DeviceInfo::FormFactor::kDesktop]);
max_phone_count = std::max(max_phone_count,
count_by_type[DeviceInfo::FormFactor::kPhone]);
max_tablet_count = std::max(max_tablet_count,
count_by_type[DeviceInfo::FormFactor::kTablet]);
}
base::UmaHistogramSparse("Sync.DeviceCount2", std::min(max_total, 100));
base::UmaHistogramSparse("Sync.DeviceCount2.Desktop",
std::min(max_desktop_count, 100));
base::UmaHistogramSparse("Sync.DeviceCount2.Phone",
std::min(max_phone_count, 100));
base::UmaHistogramSparse("Sync.DeviceCount2.Tablet",
std::min(max_tablet_count, 100));
}
} // namespace syncer
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