NewDeviceServiceImpl initialize device service and access to database.

NewHumidityServiceImpl initialize humidity service and access to database.

NewPowerServiceImpl initialize power service and access to database.

NewSensorServiceImpl initialize sensor service and access to database.

NewTemperatureServiceImpl initialize temperature service and access to database.

DeviceServiceImpl structure to access database.

HumidityServiceImpl structure to access database.

PowerServiceImpl structure to access database.

SensorServiceImpl structure to access database.

TemperatureServiceImpl structure to access database.