/
humidity.go
76 lines (65 loc) · 1.92 KB
/
humidity.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
package impl
import (
"context"
"database/sql"
"time"
"github.com/afairon/smeter/message"
"github.com/afairon/smeter/models"
"github.com/afairon/smeter/service"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
// HumidityServiceImpl structure to access database.
type HumidityServiceImpl struct {
DB *sql.DB
}
// NewHumidityServiceImpl initialize humidity service and access to database.
func NewHumidityServiceImpl(db *sql.DB) *HumidityServiceImpl {
return &HumidityServiceImpl{
DB: db,
}
}
// Add create a humidity metric.
func (s *HumidityServiceImpl) Add(ctx context.Context, req *message.Humidity) (*message.Humidity, error) {
err := models.AddHumidity(s.DB, req)
if err != nil {
return nil, status.Error(codes.Internal, err.Error())
}
return req, nil
}
// GetHumidity get data points for humidity metrics.
func (s *HumidityServiceImpl) GetHumidity(req *message.HumidityRequest, stream service.HumidityService_GetHumidityServer) error {
row, err := models.GetHumidity(s.DB, req)
if err != nil {
return status.Error(codes.Internal, err.Error())
}
for row.Next() {
resp := message.Humidity{}
timestamp := time.Time{}
err = row.Scan(×tamp, &resp.SensorID, &resp.Value)
if err != nil {
return status.Error(codes.Internal, err.Error())
}
resp.Time = timestamp.Unix()
stream.Send(&resp)
}
return err
}
// GetAvgHumidity get data points for average humidity metrics.
func (s *HumidityServiceImpl) GetAvgHumidity(req *message.HumidityRequest, stream service.HumidityService_GetAvgHumidityServer) error {
row, err := models.GetAvgHumidity(s.DB, req)
if err != nil {
return status.Error(codes.Internal, err.Error())
}
for row.Next() {
resp := message.Humidity{}
timestamp := time.Time{}
err = row.Scan(×tamp, &resp.SensorID, &resp.Value)
if err != nil {
return status.Error(codes.Internal, err.Error())
}
resp.Time = timestamp.Unix()
stream.Send(&resp)
}
return err
}