1 // 2 // Copyright (C) 2015 The Android Open Source Project 3 // 4 // Licensed under the Apache License, Version 2.0 (the "License"); 5 // you may not use this file except in compliance with the License. 6 // You may obtain a copy of the License at 7 // 8 // http://www.apache.org/licenses/LICENSE-2.0 9 // 10 // Unless required by applicable law or agreed to in writing, software 11 // distributed under the License is distributed on an "AS IS" BASIS, 12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 // See the License for the specific language governing permissions and 14 // limitations under the License. 15 // 16 17 #ifndef UPDATE_ENGINE_METRICS_UTILS_H_ 18 #define UPDATE_ENGINE_METRICS_UTILS_H_ 19 20 #include "update_engine/connection_utils.h" 21 #include "update_engine/metrics.h" 22 23 namespace chromeos_update_engine { 24 25 class SystemState; 26 27 namespace metrics_utils { 28 29 // Transforms a ErrorCode value into a metrics::DownloadErrorCode. 30 // This obviously only works for errors related to downloading so if |code| 31 // is e.g. |ErrorCode::kFilesystemCopierError| then 32 // |kDownloadErrorCodeInputMalformed| is returned. 33 metrics::DownloadErrorCode GetDownloadErrorCode(ErrorCode code); 34 35 // Transforms a ErrorCode value into a metrics::AttemptResult. 36 // 37 // If metrics::AttemptResult::kPayloadDownloadError is returned, you 38 // can use utils::GetDownloadError() to get more detail. 39 metrics::AttemptResult GetAttemptResult(ErrorCode code); 40 41 // Calculates the internet connection type given |type| and |tethering|. 42 metrics::ConnectionType GetConnectionType(ConnectionType type, 43 ConnectionTethering tethering); 44 45 // This function returns the duration on the wallclock since the last 46 // time it was called for the same |state_variable_key| value. 47 // 48 // If the function returns |true|, the duration (always non-negative) 49 // is returned in |out_duration|. If the function returns |false| 50 // something went wrong or there was no previous measurement. 51 bool WallclockDurationHelper(SystemState* system_state, 52 const std::string& state_variable_key, 53 base::TimeDelta* out_duration); 54 55 // This function returns the duration on the monotonic clock since the 56 // last time it was called for the same |storage| pointer. 57 // 58 // You should pass a pointer to a 64-bit integer in |storage| which 59 // should be initialized to 0. 60 // 61 // If the function returns |true|, the duration (always non-negative) 62 // is returned in |out_duration|. If the function returns |false| 63 // something went wrong or there was no previous measurement. 64 bool MonotonicDurationHelper(SystemState* system_state, 65 int64_t* storage, 66 base::TimeDelta* out_duration); 67 68 } // namespace metrics_utils 69 } // namespace chromeos_update_engine 70 71 #endif // UPDATE_ENGINE_METRICS_UTILS_H_ 72
