Reimplement with cleaner architecture

internal/cmd/init.go

@@ -0,0 +1,15 @@
+package cmd
+
+import (
+	"strings"
+
+	"github.com/spf13/viper"
+)
+
+func initConfig() *viper.Viper {
+	v := viper.GetViper()
+	v.AutomaticEnv()
+	v.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
+
+	return v
+}

internal/cmd/serve.go

@@ -0,0 +1,76 @@
+package cmd
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"github.com/etherlabsio/healthcheck/v2"
+	sentrygin "github.com/getsentry/sentry-go/gin"
+	"github.com/gin-gonic/gin"
+	"go.uber.org/multierr"
+
+	db "ely.by/sessionserver/internal/db/mysql"
+	"ely.by/sessionserver/internal/http"
+	"ely.by/sessionserver/internal/logging/sentry"
+	"ely.by/sessionserver/internal/services/chrly"
+	"ely.by/sessionserver/internal/services/signer"
+)
+
+func Serve() error {
+	config := initConfig()
+
+	ctx := context.Background()
+	ctx, _ = signal.NotifyContext(ctx, os.Interrupt, syscall.SIGTERM, os.Kill)
+
+	var errors, err error
+	err = sentry.InitWithConfig(config)
+	if err != nil {
+		return fmt.Errorf("unable to initialize Sentry: %w", err)
+	}
+
+	mysql, err := db.NewWithConfig(config)
+	errors = multierr.Append(errors, err)
+
+	texturesProvider, err := chrly.NewWithConfig(config)
+	errors = multierr.Append(errors, err)
+
+	signerService, err := signer.NewWithConfig(config)
+	errors = multierr.Append(errors, err)
+
+	if errors != nil {
+		return errors
+	}
+
+	if config.GetBool("debug") {
+		gin.SetMode(gin.DebugMode)
+	} else {
+		gin.SetMode(gin.ReleaseMode)
+	}
+
+	r := gin.Default()
+	r.Use(sentrygin.New(sentrygin.Options{Repanic: true}))
+	r.Use(sentry.ErrorMiddleware())
+	r.Use(http.ErrorMiddleware())
+
+	r.GET("/healthcheck", gin.WrapH(healthcheck.Handler(
+		healthcheck.WithChecker("mysql", healthcheck.CheckerFunc(mysql.Ping)),
+	)))
+
+	sessionserver := http.NewMojangApi(mysql, texturesProvider, signerService)
+	sessionserver.DefineRoutes(r)
+
+	server, err := http.NewServerWithConfig(config, r)
+	if err != nil {
+		return fmt.Errorf("unable to create a server: %w", err)
+	}
+
+	err = http.StartServer(ctx, server)
+	if err != nil {
+		return fmt.Errorf("unable to start a server: %w", err)
+	}
+
+	return nil
+}