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 PrefService;
  14
  15 namespace base {
  16 class FilePath;
  17 }
  18
  19 namespace metrics {
  20 class MetricsService;
  21 class MetricsStateManager;
  22 }
  23
  24 namespace rappor {
  25 class RapporService;
  26 }
  27
  28 namespace chrome_variations {
  29 class VariationsService;
  30 }
  31
  32 // MetricsServicesManager is a helper class that has ownership over the various
  33 // metrics-related services in Chrome: MetricsService (via its client),
  34 // RapporService and VariationsService.
  35 class MetricsServicesManager {
  36  public:
  37   // Creates the MetricsServicesManager with the |local_state| prefs service.
  38   explicit MetricsServicesManager(PrefService* local_state);
  39   virtual ~MetricsServicesManager();
  40
  41   // Returns the MetricsService, creating it if it hasn't been created yet (and
  42   // additionally creating the ChromeMetricsServiceClient in that case).
  43   metrics::MetricsService* GetMetricsService();
  44
  45   // Returns the GetRapporService, creating it if it hasn't been created yet.
  46   rappor::RapporService* GetRapporService();
  47
  48   // Returns the VariationsService, creating it if it hasn't been created yet.
  49   chrome_variations::VariationsService* GetVariationsService();
  50
  51   // Should be called when a plugin loading error occurs.
  52   void OnPluginLoadingError(const base::FilePath& plugin_path);
  53
  54  private:
  55   // Returns the ChromeMetricsServiceClient, creating it if it hasn't been
  56   // created yet (and additionally creating the MetricsService in that case).
  57   ChromeMetricsServiceClient* GetChromeMetricsServiceClient();
  58
  59   metrics::MetricsStateManager* GetMetricsStateManager();
  60
  61   // Returns true iff metrics reporting is enabled.
  62   bool IsMetricsReportingEnabled() const;
  63
  64   // Ensures that all functions are called from the same thread.
  65   base::ThreadChecker thread_checker_;
  66
  67   // Weak pointer to the local state prefs store.
  68   PrefService* local_state_;
  69
  70   // MetricsStateManager which is passed as a parameter to service constructors.
  71   scoped_ptr<metrics::MetricsStateManager> metrics_state_manager_;
  72
  73   // Chrome embedder implementation of the MetricsServiceClient. Owns the
  74   // MetricsService.
  75   scoped_ptr<ChromeMetricsServiceClient> metrics_service_client_;
  76
  77   // The RapporService, for RAPPOR metric uploads.
  78   scoped_ptr<rappor::RapporService> rappor_service_;
  79
  80   // The VariationsService, for server-side experiments infrastructure.
  81   scoped_ptr<chrome_variations::VariationsService> variations_service_;
  82
  83   DISALLOW_COPY_AND_ASSIGN(MetricsServicesManager);
  84 };
  85
  86 #endif  // CHROME_BROWSER_METRICS_METRICS_SERVICES_MANAGER_H_