-
Notifications
You must be signed in to change notification settings - Fork 50
/
ofrep_service.go
82 lines (67 loc) · 1.68 KB
/
ofrep_service.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
77
78
79
80
81
82
package ofrep
import (
"context"
"errors"
"fmt"
"net/http"
"time"
"github.com/open-feature/flagd/core/pkg/evaluator"
"github.com/open-feature/flagd/core/pkg/logger"
"github.com/rs/cors"
"golang.org/x/sync/errgroup"
)
type IOfrepService interface {
// Start the OFREP service with context for shutdown
Start(context.Context) error
}
type SvcConfiguration struct {
Logger *logger.Logger
Port uint16
}
type Service struct {
logger *logger.Logger
port uint16
server *http.Server
}
func NewOfrepService(evaluator evaluator.IEvaluator, origins []string, cfg SvcConfiguration) (*Service, error) {
corsMW := cors.New(cors.Options{
AllowedOrigins: origins,
AllowedMethods: []string{http.MethodPost},
})
h := corsMW.Handler(NewOfrepHandler(cfg.Logger, evaluator))
server := http.Server{
Addr: fmt.Sprintf(":%d", cfg.Port),
Handler: h,
ReadHeaderTimeout: 3 * time.Second,
}
return &Service{
logger: cfg.Logger,
port: cfg.Port,
server: &server,
}, nil
}
func (s Service) Start(ctx context.Context) error {
group, gCtx := errgroup.WithContext(ctx)
group.Go(func() error {
s.logger.Info(fmt.Sprintf("ofrep service listening at %d", s.port))
err := s.server.ListenAndServe()
if err != nil && !errors.Is(err, http.ErrServerClosed) {
return fmt.Errorf("error from ofrep service: %w", err)
}
return nil
})
group.Go(func() error {
<-gCtx.Done()
s.logger.Info("shutting down ofrep service")
err := s.server.Close()
if err != nil {
return fmt.Errorf("error from ofrep server shutdown: %w", err)
}
return nil
})
err := group.Wait()
if err != nil {
return fmt.Errorf("error from ofrep service: %w", err)
}
return nil
}