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.
19class 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