managed_screensaver_metrics.cc | Explore in Territory

// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ash/ambient/metrics/managed_screensaver_metrics.h"

#include <string_view>

#include "ash/ambient/managed/screensaver_image_downloader.h"
#include "ash/ambient/metrics/ambient_metrics.h"
#include "base/metrics/histogram_functions.h"
#include "base/strings/strcat.h"
#include "base/timer/elapsed_timer.h"

namespace ash {

namespace {
// Histograms use exponential bucketing, so shorter times will have more
// buckets. This number was chosen to be consistent with other ambient mode
// metrics.
// TODO(b/287231044) Move this along with other constants UMA to a shared
// header.
constexpr int kManagedScreensaverEngagemenTimeHistogramBuckets = 144;
constexpr int kManagedScreensaverStartupTimeHistogramBuckets = 144;
constexpr std::string_view kManagedScreensaverHistogramPrefix =
    "Enterprise.ManagedScreensaver.";

// This limit is specified in the policy definition for the policies
// ScreensaverLockScreenImages and DeviceScreensaverLoginScreenImages.
constexpr size_t kMaxUrlsToProcessFromPolicy = 25u;

}  // namespace

std::string GetManagedScreensaverHistogram(std::string_view histogram_suffix) {
  return base::StrCat({kManagedScreensaverHistogramPrefix, histogram_suffix});
}

void RecordManagedScreensaverEnabled(bool enabled) {
  base::UmaHistogramBoolean(
      GetManagedScreensaverHistogram(kManagedScreensaverEnabledUMA), enabled);
}

ASH_EXPORT void RecordManagedScreensaverImageCount(int image_count) {
  base::UmaHistogramExactLinear(
      GetManagedScreensaverHistogram(kManagedScreensaverImageCountUMA),
      image_count, kMaxUrlsToProcessFromPolicy + 1);
}

ASH_EXPORT void RecordManagedScreensaverImageDownloadResult(
    ScreensaverImageDownloadResult result) {
  base::UmaHistogramEnumeration(
      GetManagedScreensaverHistogram(kManagedScreensaverImageDownloadResultUMA),
      result);
}

ManagedScreensaverMetricsDelegate::ManagedScreensaverMetricsDelegate() =
    default;
ManagedScreensaverMetricsDelegate::~ManagedScreensaverMetricsDelegate() =
    default;

void ManagedScreensaverMetricsDelegate::RecordEngagementTime(
    base::TimeDelta engagement_time) {
  base::UmaHistogramCustomTimes(
      /*name=*/GetManagedScreensaverHistogram(
          kManagedScreensaverEngagementTimeSlideshowUMA),
      /*sample=*/engagement_time,
      /*min=*/base::Seconds(1),
      /*max=*/base::Hours(24),
      /*buckets=*/kManagedScreensaverEngagemenTimeHistogramBuckets);
}

void ManagedScreensaverMetricsDelegate::RecordStartupTime(
    base::TimeDelta startup_time) {
  base::UmaHistogramCustomTimes(
      /*name=*/GetManagedScreensaverHistogram(
          kManagedScreensaverStartupTimeSlideshowUMA),
      /*sample=*/startup_time,
      /*min=*/base::Seconds(0),
      /*max=*/base::Seconds(1000),
      /*buckets=*/kManagedScreensaverStartupTimeHistogramBuckets);
}

}  // namespace ash
chromium/ash/ambient/metrics/managed_screensaver_metrics.cc
