53 lines
1.1 KiB
Go
53 lines
1.1 KiB
Go
package services
|
|
|
|
import "time"
|
|
|
|
type SensorValuesService struct {
|
|
ctx *Context
|
|
}
|
|
|
|
type sensorValue struct {
|
|
Timestamp int64 `json:"timestamp"`
|
|
Value float64 `json:"value"`
|
|
}
|
|
|
|
func (s *SensorValuesService) Push(sensor string, value float64) (int64, error) {
|
|
res, err := s.ctx.DB.Exec("INSERT INTO sensor_values (timestamp, sensor, value) VALUES (?, ?, ?)", time.Now().Unix(), sensor, value)
|
|
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
return res.LastInsertId()
|
|
}
|
|
|
|
func (s *SensorValuesService) GetList(sensor string, from int64, to int64) ([]sensorValue, error) {
|
|
var value float64
|
|
var timestamp int64
|
|
values := make([]sensorValue, 0)
|
|
|
|
rows, err := s.ctx.DB.Query("SELECT timestamp, value FROM sensor_values WHERE sensor = ? AND timestamp > ? AND timestamp < ? ORDER BY timestamp ASC", sensor, from, to)
|
|
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
defer rows.Close()
|
|
|
|
for rows.Next() {
|
|
err := rows.Scan(×tamp, &value)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
values = append(values, sensorValue{Timestamp: timestamp, Value: value})
|
|
}
|
|
|
|
err = rows.Err()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return values, nil
|
|
}
|