src/chrome/browser/metrics/metrics_network_observer.cc

   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 #include "chrome/browser/metrics/metrics_network_observer.h"
   6
   7 #include "base/compiler_specific.h"
   8 #include "base/task_runner_util.h"
   9 #include "base/threading/sequenced_worker_pool.h"
  10 #include "content/public/browser/browser_thread.h"
  11
  12
  13 MetricsNetworkObserver::MetricsNetworkObserver()
  14     : weak_ptr_factory_(this),
  15       connection_type_is_ambiguous_(false),
  16       wifi_phy_layer_protocol_is_ambiguous_(false),
  17       wifi_phy_layer_protocol_(net::WIFI_PHY_LAYER_PROTOCOL_UNKNOWN) {
  18   net::NetworkChangeNotifier::AddConnectionTypeObserver(this);
  19   connection_type_ = net::NetworkChangeNotifier::GetConnectionType();
  20   ProbeWifiPHYLayerProtocol();
  21 }
  22
  23 MetricsNetworkObserver::~MetricsNetworkObserver() {
  24   net::NetworkChangeNotifier::RemoveConnectionTypeObserver(this);
  25 }
  26
  27 void MetricsNetworkObserver::Reset() {
  28   connection_type_is_ambiguous_ = false;
  29   connection_type_ = net::NetworkChangeNotifier::GetConnectionType();
  30   wifi_phy_layer_protocol_is_ambiguous_ = false;
  31 }
  32
  33 void MetricsNetworkObserver::OnConnectionTypeChanged(
  34     net::NetworkChangeNotifier::ConnectionType type) {
  35   if (type == net::NetworkChangeNotifier::CONNECTION_NONE)
  36     return;
  37   if (type != connection_type_ &&
  38       connection_type_ != net::NetworkChangeNotifier::CONNECTION_NONE) {
  39     connection_type_is_ambiguous_ = true;
  40   }
  41   connection_type_ = type;
  42
  43   ProbeWifiPHYLayerProtocol();
  44 }
  45
  46 SystemProfileProto::Network::ConnectionType
  47 MetricsNetworkObserver::connection_type() const {
  48   switch (connection_type_) {
  49     case net::NetworkChangeNotifier::CONNECTION_NONE:
  50     case net::NetworkChangeNotifier::CONNECTION_UNKNOWN:
  51       return SystemProfileProto::Network::CONNECTION_UNKNOWN;
  52     case net::NetworkChangeNotifier::CONNECTION_ETHERNET:
  53       return SystemProfileProto::Network::CONNECTION_ETHERNET;
  54     case net::NetworkChangeNotifier::CONNECTION_WIFI:
  55       return SystemProfileProto::Network::CONNECTION_WIFI;
  56     case net::NetworkChangeNotifier::CONNECTION_2G:
  57       return SystemProfileProto::Network::CONNECTION_2G;
  58     case net::NetworkChangeNotifier::CONNECTION_3G:
  59       return SystemProfileProto::Network::CONNECTION_3G;
  60     case net::NetworkChangeNotifier::CONNECTION_4G:
  61       return SystemProfileProto::Network::CONNECTION_4G;
  62   }
  63   NOTREACHED();
  64   return SystemProfileProto::Network::CONNECTION_UNKNOWN;
  65 }
  66
  67 SystemProfileProto::Network::WifiPHYLayerProtocol
  68 MetricsNetworkObserver::wifi_phy_layer_protocol() const {
  69   switch (wifi_phy_layer_protocol_) {
  70     case net::WIFI_PHY_LAYER_PROTOCOL_NONE:
  71       return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_NONE;
  72     case net::WIFI_PHY_LAYER_PROTOCOL_ANCIENT:
  73       return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_ANCIENT;
  74     case net::WIFI_PHY_LAYER_PROTOCOL_A:
  75       return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_A;
  76     case net::WIFI_PHY_LAYER_PROTOCOL_B:
  77       return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_B;
  78     case net::WIFI_PHY_LAYER_PROTOCOL_G:
  79       return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_G;
  80     case net::WIFI_PHY_LAYER_PROTOCOL_N:
  81       return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_N;
  82     case net::WIFI_PHY_LAYER_PROTOCOL_UNKNOWN:
  83       return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_UNKNOWN;
  84   }
  85   NOTREACHED();
  86   return SystemProfileProto::Network::WIFI_PHY_LAYER_PROTOCOL_UNKNOWN;
  87 }
  88
  89 void MetricsNetworkObserver::ProbeWifiPHYLayerProtocol() {
  90   PostTaskAndReplyWithResult(
  91       content::BrowserThread::GetBlockingPool(),
  92       FROM_HERE,
  93       base::Bind(&net::GetWifiPHYLayerProtocol),
  94       base::Bind(&MetricsNetworkObserver::OnWifiPHYLayerProtocolResult,
  95                  weak_ptr_factory_.GetWeakPtr()));
  96 }
  97
  98 void MetricsNetworkObserver::OnWifiPHYLayerProtocolResult(
  99     net::WifiPHYLayerProtocol mode) {
 100   if (wifi_phy_layer_protocol_ != net::WIFI_PHY_LAYER_PROTOCOL_UNKNOWN &&
 101       mode != wifi_phy_layer_protocol_) {
 102     wifi_phy_layer_protocol_is_ambiguous_ = true;
 103   }
 104   wifi_phy_layer_protocol_ = mode;
 105 }
 106