Files

120 lines
2.5 KiB
Go

package main
import (
"context"
"errors"
"kooltap-updateserver/internal/db"
"kooltap-updateserver/internal/routes"
"log"
"net/http"
"os"
"os/signal"
"strconv"
"syscall"
"time"
"github.com/gin-gonic/gin"
"github.com/joho/godotenv"
)
func main() {
_ = godotenv.Load()
dsn := os.Getenv("DATABASE_URL")
if dsn == "" {
log.Fatal("DATABASE_URL is required, e.g. postgres://user:pass@host:5432/kooltap?sslmode=disable")
}
database, err := db.Connect(dsn)
if err != nil {
log.Fatal(err)
}
// One-time migration of the old file based database, if it is still mounted
if err := db.ImportSQLite(database, env("SQLITE_IMPORT_PATH", "data/updater.db")); err != nil {
log.Fatal(err)
}
h := &routes.Handler{
DB: database,
UploadDir: env("UPLOAD_DIR", "uploads"),
TmpDir: env("TMP_DIR", "tmp"),
MaxUpload: int64(envInt("MAX_UPLOAD_MB", 300)) << 20,
}
for _, dir := range []string{h.UploadDir, h.TmpDir} {
if err := os.MkdirAll(dir, 0755); err != nil {
log.Fatal(err)
}
}
r := gin.Default()
// No proxy headers are used for anything, so do not trust any
_ = r.SetTrustedProxies(nil)
r.Use(func(c *gin.Context) {
c.Header("Server", "KoolTap Updater")
c.Next()
})
r.Static("/downloads", h.UploadDir)
r.GET("/", func(c *gin.Context) {
sqlDB, err := database.DB()
if err == nil {
err = sqlDB.PingContext(c.Request.Context())
}
if err != nil {
c.JSON(http.StatusServiceUnavailable, gin.H{"status": "database unavailable"})
return
}
c.JSON(http.StatusOK, gin.H{"status": "ok"})
})
h.Register(r)
srv := &http.Server{
Addr: ":" + env("PORT", "3000"),
Handler: r,
ReadHeaderTimeout: 10 * time.Second,
}
go func() {
log.Printf("listening on %s", srv.Addr)
if err := srv.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
log.Fatal(err)
}
}()
// Let in-flight uploads finish when the container is stopped
ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
defer stop()
<-ctx.Done()
log.Println("shutting down")
shutdownCtx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()
if err := srv.Shutdown(shutdownCtx); err != nil {
log.Printf("shutdown: %v", err)
}
if sqlDB, err := database.DB(); err == nil {
sqlDB.Close()
}
}
func env(key, fallback string) string {
if v := os.Getenv(key); v != "" {
return v
}
return fallback
}
func envInt(key string, fallback int) int {
if v, err := strconv.Atoi(os.Getenv(key)); err == nil && v > 0 {
return v
}
return fallback
}