chrome/browser/metrics/metrics_network_observer.h

   1 // Copyright (c) 2013 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_NETWORK_OBSERVER_H_
   6 #define CHROME_BROWSER_METRICS_METRICS_NETWORK_OBSERVER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/memory/weak_ptr.h"
  11 #include "chrome/common/metrics/proto/system_profile.pb.h"
  12 #include "net/base/net_util.h"
  13 #include "net/base/network_change_notifier.h"
  14
  15 using metrics::SystemProfileProto;
  16
  17 // Registers as observer with net::NetworkChangeNotifier and keeps track of
  18 // the network environment.
  19 class MetricsNetworkObserver
  20     : public net::NetworkChangeNotifier::ConnectionTypeObserver {
  21  public:
  22   MetricsNetworkObserver();
  23   virtual ~MetricsNetworkObserver();
  24
  25   // Resets the "ambiguous" flags. Call when the environment is recorded.
  26   void Reset();
  27
  28   // ConnectionTypeObserver:
  29   virtual void OnConnectionTypeChanged(
  30       net::NetworkChangeNotifier::ConnectionType type) OVERRIDE;
  31
  32   bool connection_type_is_ambiguous() const {
  33     return connection_type_is_ambiguous_;
  34   }
  35
  36   SystemProfileProto::Network::ConnectionType connection_type() const;
  37
  38   bool wifi_phy_layer_protocol_is_ambiguous() const {
  39     return wifi_phy_layer_protocol_is_ambiguous_;
  40   }
  41
  42   SystemProfileProto::Network::WifiPHYLayerProtocol
  43   wifi_phy_layer_protocol() const;
  44
  45  private:
  46   // Posts a call to net::GetWifiPHYLayerProtocol on the blocking pool.
  47   void ProbeWifiPHYLayerProtocol();
  48   // Callback from the blocking pool with the result of
  49   // net::GetWifiPHYLayerProtocol.
  50   void OnWifiPHYLayerProtocolResult(net::WifiPHYLayerProtocol mode);
  51
  52   base::WeakPtrFactory<MetricsNetworkObserver> weak_ptr_factory_;
  53
  54   // True if |connection_type_| changed during the lifetime of the log.
  55   bool connection_type_is_ambiguous_;
  56   // The connection type according to net::NetworkChangeNotifier.
  57   net::NetworkChangeNotifier::ConnectionType connection_type_;
  58
  59   // True if |wifi_phy_layer_protocol_| changed during the lifetime of the log.
  60   bool wifi_phy_layer_protocol_is_ambiguous_;
  61   // The PHY mode of the currently associated access point obtained via
  62   // net::GetWifiPHYLayerProtocol.
  63   net::WifiPHYLayerProtocol wifi_phy_layer_protocol_;
  64
  65   DISALLOW_COPY_AND_ASSIGN(MetricsNetworkObserver);
  66 };
  67
  68 #endif  // CHROME_BROWSER_METRICS_METRICS_NETWORK_OBSERVER_H_