sensor: re-sample pressure data and perform lazy insertions to reduce DB overhead
[platform/core/context/context-provider.git] / src / sensor / pressure / PressureLogger.h
1 /*
2  * Copyright (c) 2016 Samsung Electronics Co., Ltd.
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 __CONTEXT_PRESSURE_LOGGER_H__
18 #define __CONTEXT_PRESSURE_LOGGER_H__
19
20 #include "../SensorLogger.h"
21 #include "../SensorProxy.h"
22
23 namespace ctx {
24
25         class PressureLogger : public SensorLogger, public SensorProxy {
26         public:
27                 PressureLogger();
28                 ~PressureLogger();
29
30                 bool start();
31                 void stop();
32                 void flushCache(bool force = false);
33
34         protected:
35                 void onEvent(sensor_data_t *eventData);
36
37         private:
38                 void __record(float pressure, uint64_t eventTime);
39                 void __resetInsertionQuery();
40
41                 uint64_t __lastEventTime;
42                 uint32_t __cacheCount;
43                 std::string __insertionQuery;
44         };
45 }
46
47 #endif /* __CONTEXT_PRESSURE_LOGGER_H__ */