components/proximity_auth/metrics.h

   1 // Copyright 2015 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_PROXIMITY_AUTH_METRICS_H
   6 #define COMPONENTS_PROXIMITY_AUTH_METRICS_H
   7
   8 #include "base/time/time.h"
   9
  10 namespace proximity_auth {
  11 namespace metrics {
  12
  13 extern const char kUnknownDeviceModel[];
  14 extern const int kUnknownProximityValue;
  15
  16 // Records the current |rolling_rssi| reading, upon a successful auth attempt.
  17 // |rolling_rssi| should be set to |kUnknownProximityValue| if no RSSI readings
  18 // are available.
  19 void RecordAuthProximityRollingRssi(int rolling_rssi);
  20
  21 // Records the difference between the transmit power and maximum transmit power,
  22 // upon a successful auth attempt. |transmit_power_delta| should be set to
  23 // |kUnknownProximityValue| if no Tx power readings are available.
  24 void RecordAuthProximityTransmitPowerDelta(int transmit_power_delta);
  25
  26 // Records the time elapsed since the last zero RSSI value was read, upon a
  27 // successful auth attempt.
  28 void RecordAuthProximityTimeSinceLastZeroRssi(
  29     base::TimeDelta time_since_last_zero_rssi);
  30
  31 // Records the phone model used for a successful auth attempt. The model is
  32 // recorded as a 32-bit hash due to the limits of UMA. |device_model| should be
  33 // set to |kUnknownDeviceModel| if the device model could not be read.
  34 void RecordAuthProximityRemoteDeviceModelHash(const std::string& device_model);
  35
  36 }  // namespace metrics
  37 }  // namespace proximity_auth
  38
  39 #endif  // COMPONENTS_PROXIMITY_AUTH_METRICS_H