-
Notifications
You must be signed in to change notification settings - Fork 0
/
http-server.go
84 lines (72 loc) · 1.86 KB
/
http-server.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
83
84
package gateway
import (
"context"
"fmt"
"github.com/go-chi/chi/v5"
"github.com/go-chi/chi/v5/middleware"
"github.com/jponge/playground-go-microservices/pulsar/temperature-store-gateway/data"
"github.com/prometheus/client_golang/prometheus/promhttp"
"log"
"net/http"
"os"
"os/signal"
"time"
)
func (service Service) Start() {
service.initPulsarClient()
address := fmt.Sprintf("%s:%d", service.Host, service.Port)
srv := &http.Server{
Addr: address,
Handler: service.router(),
ReadTimeout: 15 * time.Second,
WriteTimeout: 15 * time.Second,
}
go func() {
log.Println("🚀 Start to listen on", address)
err := srv.ListenAndServe()
if err != nil {
log.Fatal(err)
}
}()
// Wait for signal
sigChan := make(chan os.Signal, 1)
signal.Notify(sigChan, os.Interrupt)
<-sigChan
// Graceful shutdown
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
srv.Shutdown(ctx)
// Close Pulsar client connection
service.closePulsarClient()
log.Println("👋 Bye!")
}
func (service Service) router() *chi.Mux {
router := chi.NewRouter()
router.Use(middleware.Logger)
router.Method(http.MethodGet, "/metrics", promhttp.Handler())
router.Route("/record", func(r chi.Router) {
r.Use(TrackIngestionMetrics)
r.Post("/", service.record)
})
return router
}
func (service Service) record(writer http.ResponseWriter, request *http.Request) {
defer request.Body.Close()
payload, err := data.PayloadFromReader(request.Body)
if err != nil {
log.Println("JSON decoding failed")
send500(writer, err.Error())
return
}
err = service.pushToPulsar(request.Context(), *payload)
if err != nil {
log.Println("Pulsar operation failure")
send500(writer, err.Error())
return
}
writer.WriteHeader(200)
}
func send500(writer http.ResponseWriter, err string) {
writer.WriteHeader(500)
writer.Write([]byte(err))
}