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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_METRICS_NET_NETWORK_METRICS_PROVIDER_H_
#define COMPONENTS_METRICS_NET_NETWORK_METRICS_PROVIDER_H_
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "components/metrics/metrics_provider.h"
#include "components/metrics/net/wifi_access_point_info_provider.h"
#include "components/metrics/proto/system_profile.pb.h"
#include "net/base/net_util.h"
#include "net/base/network_change_notifier.h"
namespace metrics {
// Registers as observer with net::NetworkChangeNotifier and keeps track of
// the network environment.
class NetworkMetricsProvider
: public MetricsProvider,
public net::NetworkChangeNotifier::ConnectionTypeObserver {
public:
// Creates a NetworkMetricsProvider, where |io_task_runner| is used to post
// network info collection tasks.
explicit NetworkMetricsProvider(base::TaskRunner* io_task_runner);
~NetworkMetricsProvider() override;
private:
// MetricsProvider:
void OnDidCreateMetricsLog() override;
void ProvideSystemProfileMetrics(SystemProfileProto* system_profile) override;
// ConnectionTypeObserver:
void OnConnectionTypeChanged(
net::NetworkChangeNotifier::ConnectionType type) override;
SystemProfileProto::Network::ConnectionType GetConnectionType() const;
SystemProfileProto::Network::WifiPHYLayerProtocol GetWifiPHYLayerProtocol()
const;
// Posts a call to net::GetWifiPHYLayerProtocol on the blocking pool.
void ProbeWifiPHYLayerProtocol();
// Callback from the blocking pool with the result of
// net::GetWifiPHYLayerProtocol.
void OnWifiPHYLayerProtocolResult(net::WifiPHYLayerProtocol mode);
// Writes info about the wireless access points that this system is
// connected to.
void WriteWifiAccessPointProto(
const WifiAccessPointInfoProvider::WifiAccessPointInfo& info,
SystemProfileProto::Network* network_proto);
// Task runner used for blocking file I/O.
base::TaskRunner* io_task_runner_;
// True if |connection_type_| changed during the lifetime of the log.
bool connection_type_is_ambiguous_;
// The connection type according to net::NetworkChangeNotifier.
net::NetworkChangeNotifier::ConnectionType connection_type_;
// True if |wifi_phy_layer_protocol_| changed during the lifetime of the log.
bool wifi_phy_layer_protocol_is_ambiguous_;
// The PHY mode of the currently associated access point obtained via
// net::GetWifiPHYLayerProtocol.
net::WifiPHYLayerProtocol wifi_phy_layer_protocol_;
// Helper object for retrieving connected wifi access point information.
scoped_ptr<WifiAccessPointInfoProvider> wifi_access_point_info_provider_;
base::WeakPtrFactory<NetworkMetricsProvider> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(NetworkMetricsProvider);
};
} // namespace metrics
#endif // COMPONENTS_METRICS_NET_NETWORK_METRICS_PROVIDER_H_
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