blob: 3e852cc6df6464d3d60d2d2ba1745b91273cb2bc [file] [log] [blame]
// Copyright 2019 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 "base/optional.h"
#include "base/sequence_checker.h"
#include "components/arc/metrics/arc_metrics_constants.h"
class PrefService;
namespace arc {
// Singleton instance that keeps track of ARC-related stability metrics. In case
// of a crash, stability metrics from previous session are included in initial
// stability log, which is generated early on browser startup when ARC services
// aren't available. This class supports recording stability metrics by
// persisting them into local state.
class StabilityMetricsManager {
static void Initialize(PrefService* local_state);
static void Shutdown();
// May return null if not initialized, which happens only in unit tests.
static StabilityMetricsManager* Get();
// Reads metrics from |local_state_| and record to UMA. Called from
// ChromeOSMetricsProvider to include stability metrics in all uploaded UMA
// logs.
void RecordMetricsToUMA();
// Resets metrics persisted in |local_state_|. Called from ArcSessionManager
// which determines whether stability metrics should be recorded for current
// session,
void ResetMetrics();
// Returns current persisted value (if exists) for Arc.State UMA histogram.
base::Optional<bool> GetArcEnabledState();
// Sets value for Arc.State UMA histogram.
void SetArcEnabledState(bool enabled);
// Returns current persisted value (if exists) for Arc.State UMA histogram.
base::Optional<NativeBridgeType> GetArcNativeBridgeType();
// Sets value for Arc.NativeBridgeType UMA histogram.
void SetArcNativeBridgeType(NativeBridgeType native_bridge_type);
explicit StabilityMetricsManager(PrefService* local_state);
PrefService* const local_state_;
} // namespace arc