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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 "components/metrics/metrics_service_accessor.h"
#include "base/base_switches.h"
#include "base/command_line.h"
#include "components/metrics/metrics_pref_names.h"
#include "components/metrics/metrics_service.h"
#include "components/prefs/pref_service.h"
#include "components/variations/metrics_util.h"
namespace metrics {
// static
bool MetricsServiceAccessor::IsMetricsReportingEnabled(
PrefService* pref_service) {
return IsMetricsReportingEnabledWithPrefValue(
pref_service->GetBoolean(prefs::kMetricsReportingEnabled));
}
// static
bool MetricsServiceAccessor::IsMetricsReportingEnabledWithPrefValue(
bool enabled_in_prefs) {
#if defined(GOOGLE_CHROME_BUILD)
// In official builds, disable metrics when reporting field trials are
// forced; otherwise, use the value of the user's preference to determine
// whether to enable metrics reporting.
return !base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kForceFieldTrials) &&
enabled_in_prefs;
#else
// In non-official builds, disable metrics reporting completely.
return false;
#endif // defined(GOOGLE_CHROME_BUILD)
}
// static
bool MetricsServiceAccessor::RegisterSyntheticFieldTrial(
MetricsService* metrics_service,
const std::string& trial_name,
const std::string& group_name) {
return RegisterSyntheticFieldTrialWithNameAndGroupHash(
metrics_service, HashName(trial_name), HashName(group_name));
}
// static
bool MetricsServiceAccessor::RegisterSyntheticFieldTrialWithNameHash(
MetricsService* metrics_service,
uint32_t trial_name_hash,
const std::string& group_name) {
return RegisterSyntheticFieldTrialWithNameAndGroupHash(
metrics_service, trial_name_hash, HashName(group_name));
}
// static
bool MetricsServiceAccessor::RegisterSyntheticFieldTrialWithNameAndGroupHash(
MetricsService* metrics_service,
uint32_t trial_name_hash,
uint32_t group_name_hash) {
if (!metrics_service)
return false;
variations::SyntheticTrialGroup trial_group(trial_name_hash, group_name_hash);
metrics_service->RegisterSyntheticFieldTrial(trial_group);
return true;
}
} // namespace metrics
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