components/metrics/net/network_metrics_provider.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 COMPONENTS_METRICS_NET_NETWORK_METRICS_PROVIDER_H_
   6 #define COMPONENTS_METRICS_NET_NETWORK_METRICS_PROVIDER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/memory/weak_ptr.h"
  11 #include "components/metrics/metrics_provider.h"
  12 #include "components/metrics/net/wifi_access_point_info_provider.h"
  13 #include "components/metrics/proto/system_profile.pb.h"
  14 #include "net/base/net_util.h"
  15 #include "net/base/network_change_notifier.h"
  16
  17 namespace metrics {
  18
  19 // Registers as observer with net::NetworkChangeNotifier and keeps track of
  20 // the network environment.
  21 class NetworkMetricsProvider
  22     : public MetricsProvider,
  23       public net::NetworkChangeNotifier::ConnectionTypeObserver {
  24  public:
  25   // Creates a NetworkMetricsProvider, where |io_task_runner| is used to post
  26   // network info collection tasks.
  27   explicit NetworkMetricsProvider(base::TaskRunner* io_task_runner);
  28   ~NetworkMetricsProvider() override;
  29
  30  private:
  31   // MetricsProvider:
  32   void OnDidCreateMetricsLog() override;
  33   void ProvideSystemProfileMetrics(SystemProfileProto* system_profile) override;
  34
  35   // ConnectionTypeObserver:
  36   void OnConnectionTypeChanged(
  37       net::NetworkChangeNotifier::ConnectionType type) override;
  38
  39   SystemProfileProto::Network::ConnectionType GetConnectionType() const;
  40   SystemProfileProto::Network::WifiPHYLayerProtocol GetWifiPHYLayerProtocol()
  41       const;
  42
  43   // Posts a call to net::GetWifiPHYLayerProtocol on the blocking pool.
  44   void ProbeWifiPHYLayerProtocol();
  45   // Callback from the blocking pool with the result of
  46   // net::GetWifiPHYLayerProtocol.
  47   void OnWifiPHYLayerProtocolResult(net::WifiPHYLayerProtocol mode);
  48
  49   // Writes info about the wireless access points that this system is
  50   // connected to.
  51   void WriteWifiAccessPointProto(
  52       const WifiAccessPointInfoProvider::WifiAccessPointInfo& info,
  53       SystemProfileProto::Network* network_proto);
  54
  55   // Task runner used for blocking file I/O.
  56   base::TaskRunner* io_task_runner_;
  57
  58   // True if |connection_type_| changed during the lifetime of the log.
  59   bool connection_type_is_ambiguous_;
  60   // The connection type according to net::NetworkChangeNotifier.
  61   net::NetworkChangeNotifier::ConnectionType connection_type_;
  62
  63   // True if |wifi_phy_layer_protocol_| changed during the lifetime of the log.
  64   bool wifi_phy_layer_protocol_is_ambiguous_;
  65   // The PHY mode of the currently associated access point obtained via
  66   // net::GetWifiPHYLayerProtocol.
  67   net::WifiPHYLayerProtocol wifi_phy_layer_protocol_;
  68
  69   // Helper object for retrieving connected wifi access point information.
  70   scoped_ptr<WifiAccessPointInfoProvider> wifi_access_point_info_provider_;
  71
  72   base::WeakPtrFactory<NetworkMetricsProvider> weak_ptr_factory_;
  73
  74   DISALLOW_COPY_AND_ASSIGN(NetworkMetricsProvider);
  75 };
  76
  77 }  // namespace metrics
  78
  79 #endif  // COMPONENTS_METRICS_NET_NETWORK_METRICS_PROVIDER_H_