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// Copyright 2017 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/metrics/stability_metrics_provider.h"
#include <string>
#include "base/logging.h"
#include "base/metrics/histogram_macros.h"
#include "build/build_config.h"
#include "components/metrics/metrics_pref_names.h"
#include "components/metrics/stability_metrics_helper.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/pref_service.h"
#include "components/prefs/scoped_user_pref_update.h"
#include "third_party/metrics_proto/system_profile.pb.h"
#if BUILDFLAG(IS_ANDROID)
#include "base/android/build_info.h"
#endif
#if BUILDFLAG(IS_WIN)
#include "components/metrics/system_session_analyzer/system_session_analyzer_win.h"
#endif
namespace metrics {
namespace {
#if BUILDFLAG(IS_ANDROID)
bool HasGmsCoreVersionChanged(PrefService* local_state) {
std::string previous_version =
local_state->GetString(prefs::kStabilityGmsCoreVersion);
std::string current_version =
base::android::BuildInfo::GetInstance()->gms_version_code();
// If the last version is empty, treat it as consistent.
if (previous_version.empty())
return false;
return previous_version != current_version;
}
void UpdateGmsCoreVersionPref(PrefService* local_state) {
std::string current_version =
base::android::BuildInfo::GetInstance()->gms_version_code();
local_state->SetString(prefs::kStabilityGmsCoreVersion, current_version);
}
#endif
} // namespace
StabilityMetricsProvider::StabilityMetricsProvider(PrefService* local_state)
: local_state_(local_state) {}
StabilityMetricsProvider::~StabilityMetricsProvider() = default;
// static
void StabilityMetricsProvider::RegisterPrefs(PrefRegistrySimple* registry) {
registry->RegisterIntegerPref(prefs::kStabilityFileMetricsUnsentFilesCount,
0);
registry->RegisterIntegerPref(prefs::kStabilityFileMetricsUnsentSamplesCount,
0);
#if BUILDFLAG(IS_ANDROID)
registry->RegisterIntegerPref(prefs::kStabilityLaunchCount, 0);
registry->RegisterStringPref(prefs::kStabilityGmsCoreVersion, "");
registry->RegisterIntegerPref(prefs::kStabilityCrashCountDueToGmsCoreUpdate,
0);
#endif
#if BUILDFLAG(IS_WIN)
registry->RegisterIntegerPref(prefs::kStabilitySystemCrashCount, 0);
#endif
}
void StabilityMetricsProvider::Init() {
#if BUILDFLAG(IS_ANDROID)
// This method has to be called after HasGmsCoreVersionChanged() to avoid
// overwriting thie result.
UpdateGmsCoreVersionPref(local_state_);
#endif
}
void StabilityMetricsProvider::ClearSavedStabilityMetrics() {
// The 0 is a valid value for the below prefs, clears pref instead
// of setting to default value.
local_state_->ClearPref(prefs::kStabilityFileMetricsUnsentFilesCount);
local_state_->ClearPref(prefs::kStabilityFileMetricsUnsentSamplesCount);
#if BUILDFLAG(IS_ANDROID)
local_state_->SetInteger(prefs::kStabilityLaunchCount, 0);
#endif
#if BUILDFLAG(IS_WIN)
local_state_->SetInteger(prefs::kStabilitySystemCrashCount, 0);
#endif
}
void StabilityMetricsProvider::ProvideStabilityMetrics(
SystemProfileProto* system_profile) {
#if BUILDFLAG(IS_ANDROID)
SystemProfileProto::Stability* stability =
system_profile->mutable_stability();
int pref_value = 0;
if (GetAndClearPrefValue(prefs::kStabilityLaunchCount, &pref_value))
stability->set_launch_count(pref_value);
if (GetAndClearPrefValue(prefs::kStabilityCrashCountDueToGmsCoreUpdate,
&pref_value)) {
stability->set_crash_count_due_to_gms_core_update(pref_value);
}
#endif
if (local_state_->HasPrefPath(prefs::kStabilityFileMetricsUnsentFilesCount)) {
UMA_STABILITY_HISTOGRAM_COUNTS_100(
"Stability.Internals.FileMetricsProvider.BrowserMetrics."
"UnsentFilesCount",
local_state_->GetInteger(prefs::kStabilityFileMetricsUnsentFilesCount));
local_state_->ClearPref(prefs::kStabilityFileMetricsUnsentFilesCount);
}
if (local_state_->HasPrefPath(
prefs::kStabilityFileMetricsUnsentSamplesCount)) {
UMA_STABILITY_HISTOGRAM_CUSTOM_COUNTS(
"Stability.Internals.FileMetricsProvider.BrowserMetrics."
"UnsentSamplesCount",
local_state_->GetInteger(
prefs::kStabilityFileMetricsUnsentSamplesCount),
0, 1000000, 50);
local_state_->ClearPref(prefs::kStabilityFileMetricsUnsentSamplesCount);
}
#if BUILDFLAG(IS_WIN)
int pref_value = 0;
if (GetAndClearPrefValue(prefs::kStabilitySystemCrashCount, &pref_value)) {
UMA_STABILITY_HISTOGRAM_COUNTS_100("Stability.Internals.SystemCrashCount",
pref_value);
}
#endif
}
void StabilityMetricsProvider::LogCrash(base::Time last_live_timestamp) {
#if BUILDFLAG(IS_ANDROID)
// On Android, if there is an update for GMS Core when Chrome is running,
// Chrome will be killed, counting as a crash. This is expected and should not
// be counted in stability crash counts. Thus these crashes are added to a
// specific bucket for crashes caused by GMS Core updates.
if (HasGmsCoreVersionChanged(local_state_)) {
IncrementPrefValue(prefs::kStabilityCrashCountDueToGmsCoreUpdate);
return;
}
#endif
StabilityMetricsHelper::RecordStabilityEvent(
StabilityEventType::kBrowserCrash);
#if BUILDFLAG(IS_WIN)
MaybeLogSystemCrash(last_live_timestamp);
#endif
}
void StabilityMetricsProvider::LogLaunch() {
#if BUILDFLAG(IS_ANDROID)
IncrementPrefValue(prefs::kStabilityLaunchCount);
#endif
StabilityMetricsHelper::RecordStabilityEvent(StabilityEventType::kLaunch);
}
#if BUILDFLAG(IS_WIN)
bool StabilityMetricsProvider::IsUncleanSystemSession(
base::Time last_live_timestamp) {
DCHECK_NE(base::Time(), last_live_timestamp);
// There's a non-null last live timestamp, see if this occurred in
// a Windows system session that ended uncleanly. The expectation is that
// |last_live_timestamp| will have occurred in the immediately previous system
// session, but if the system has been restarted many times since Chrome last
// ran, that's not necessarily true. Log traversal can be expensive, so we
// limit the analyzer to reaching back three previous system sessions to bound
// the cost of the traversal.
SystemSessionAnalyzer analyzer(3);
SystemSessionAnalyzer::Status status =
analyzer.IsSessionUnclean(last_live_timestamp);
return status == SystemSessionAnalyzer::UNCLEAN;
}
void StabilityMetricsProvider::MaybeLogSystemCrash(
base::Time last_live_timestamp) {
if (last_live_timestamp != base::Time() &&
IsUncleanSystemSession(last_live_timestamp)) {
IncrementPrefValue(prefs::kStabilitySystemCrashCount);
}
}
#endif
void StabilityMetricsProvider::IncrementPrefValue(const char* path) {
int value = local_state_->GetInteger(path);
local_state_->SetInteger(path, value + 1);
}
int StabilityMetricsProvider::GetAndClearPrefValue(const char* path,
int* value) {
*value = local_state_->GetInteger(path);
if (*value != 0)
local_state_->SetInteger(path, 0);
return *value;
}
} // namespace metrics
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