-
Notifications
You must be signed in to change notification settings - Fork 0
/
main.go
84 lines (69 loc) · 2.28 KB
/
main.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 main
import (
"context"
"os"
"os/signal"
"github.com/gin-gonic/gin"
"github.com/rs/zerolog/log"
"github.com/wisdom-oss/common-go/v2/middleware"
"github.com/wisdom-oss/common-go/v2/types"
healthcheckServer "github.com/wisdom-oss/go-healthcheck/server"
"microservice/internal"
"microservice/internal/config"
"microservice/internal/db"
"microservice/internal/errors"
"microservice/middlewares"
"microservice/routes"
)
// the main function bootstraps the http server and handlers used for this
// microservice
func main() {
// create a new logger for the main function
l := log.Logger
l.Info().Msgf("configuring %s service", internal.ServiceName)
// create the healthcheck server
hcServer := healthcheckServer.HealthcheckServer{}
hcServer.InitWithFunc(func() error {
// test if the database is reachable
return db.Pool.Ping(context.Background())
})
err := hcServer.Start()
if err != nil {
l.Fatal().Err(err).Msg("unable to start healthcheck server")
}
go hcServer.Run()
// shorthand for requiring scope
requireScope := middleware.RequireScope{}.Gin
r := gin.New()
r.HandleMethodNotAllowed = true
_ = r.SetTrustedProxies(nil)
r.Use(config.Middlewares()...)
r.NoMethod(func(c *gin.Context) {
errors.MethodNotAllowed.Emit(c)
})
r.NoRoute(func(c *gin.Context) {
errors.NotFound.Emit(c)
})
r.GET("/", routes.LayerOverview)
r.GET("/:layerID", middlewares.ResolveLayer, routes.LayerInformation)
r.GET("/identify", routes.IdentifyObject)
content := r.Group("/content", requireScope(internal.ServiceName, types.ScopeRead), middlewares.ResolveLayer)
{
content.GET("/:layerID", routes.LayerContents)
content.GET("/:layerID/filtered", routes.FilteredLayerContents)
}
l.Info().Msg("finished service configuration")
l.Info().Msg("starting http server")
// Start the server and log errors that happen while running it
go func() {
if err := r.Run(config.ListenAddress); err != nil {
l.Fatal().Err(err).Msg("An error occurred while starting the http server")
}
}()
// Set up the signal handling to allow the server to shut down gracefully
cancelSignal := make(chan os.Signal, 1)
signal.Notify(cancelSignal, os.Interrupt)
// Block further code execution until the shutdown signal was received
l.Info().Msg("server ready to accept connections")
<-cancelSignal
}