chrome/browser/metrics/metrics_services_manager.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_METRICS_METRICS_SERVICES_MANAGER_H_
   6 #define CHROME_BROWSER_METRICS_METRICS_SERVICES_MANAGER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/threading/thread_checker.h"
  11
  12 class ChromeMetricsServiceClient;
  13 class MetricsService;
  14 class PrefService;
  15
  16 namespace metrics {
  17 class MetricsStateManager;
  18 }
  19
  20 namespace rappor {
  21 class RapporService;
  22 }
  23
  24 namespace chrome_variations {
  25 class VariationsService;
  26 }
  27
  28 // MetricsServicesManager is a helper class that has ownership over the various
  29 // metrics-related services in Chrome: MetricsService (via its client),
  30 // RapporService and VariationsService.
  31 class MetricsServicesManager {
  32  public:
  33   // Creates the MetricsServicesManager with the |local_state| prefs service.
  34   explicit MetricsServicesManager(PrefService* local_state);
  35   virtual ~MetricsServicesManager();
  36
  37   // Returns the MetricsService, creating it if it hasn't been created yet.
  38   MetricsService* GetMetricsService();
  39
  40   // Returns the GetRapporService, creating it if it hasn't been created yet.
  41   rappor::RapporService* GetRapporService();
  42
  43   // Returns the VariationsService, creating it if it hasn't been created yet.
  44   chrome_variations::VariationsService* GetVariationsService();
  45
  46  private:
  47   metrics::MetricsStateManager* GetMetricsStateManager();
  48
  49   // Returns true iff metrics reporting is enabled.
  50   bool IsMetricsReportingEnabled() const;
  51
  52   // Ensures that all functions are called from the same thread.
  53   base::ThreadChecker thread_checker_;
  54
  55   // Weak pointer to the local state prefs store.
  56   PrefService* local_state_;
  57
  58   // MetricsStateManager which is passed as a parameter to service constructors.
  59   scoped_ptr<metrics::MetricsStateManager> metrics_state_manager_;
  60
  61   // Chrome embedder implementation of the MetricsServiceClient. Owns the
  62   // MetricsService.
  63   scoped_ptr<ChromeMetricsServiceClient> metrics_service_client_;
  64
  65   // The RapporService, for RAPPOR metric uploads.
  66   scoped_ptr<rappor::RapporService> rappor_service_;
  67
  68   // The VariationsService, for server-side experiments infrastructure.
  69   scoped_ptr<chrome_variations::VariationsService> variations_service_;
  70
  71   DISALLOW_COPY_AND_ASSIGN(MetricsServicesManager);
  72 };
  73
  74 #endif  // CHROME_BROWSER_METRICS_METRICS_SERVICES_MANAGER_H_