Home | History | Annotate | Download | only in net 
      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 // Registers as observer with net::NetworkChangeNotifier and keeps track of
     18 // the network environment.
     19 class NetworkMetricsProvider
     20     : public metrics::MetricsProvider,
     21       public net::NetworkChangeNotifier::ConnectionTypeObserver {
     22  public:
     23   // Creates a NetworkMetricsProvider, where |io_task_runner| is used to post
     24   // network info collection tasks.
     25   explicit NetworkMetricsProvider(base::TaskRunner* io_task_runner);
     26   virtual ~NetworkMetricsProvider();
     27 
     28  private:
     29   // metrics::MetricsProvider:
     30   virtual void OnDidCreateMetricsLog() OVERRIDE;
     31   virtual void ProvideSystemProfileMetrics(
     32       metrics::SystemProfileProto* system_profile) OVERRIDE;
     33 
     34   // ConnectionTypeObserver:
     35   virtual void OnConnectionTypeChanged(
     36       net::NetworkChangeNotifier::ConnectionType type) OVERRIDE;
     37 
     38   metrics::SystemProfileProto::Network::ConnectionType
     39   GetConnectionType() const;
     40   metrics::SystemProfileProto::Network::WifiPHYLayerProtocol
     41   GetWifiPHYLayerProtocol() 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       metrics::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 #endif  // COMPONENTS_METRICS_NET_NETWORK_METRICS_PROVIDER_H_
     78