mirror of
https://github.com/ThisTine/Snip.git
synced 2026-08-18 23:18:47 +07:00
101 lines
2.2 KiB
Go
101 lines
2.2 KiB
Go
// Command snip is a single binary exposing three subcommands — api, frontend
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// and redirect — so one Docker image can back three docker-compose services.
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package main
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import (
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"context"
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"errors"
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"fmt"
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"log"
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"net/http"
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"os"
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"os/signal"
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"syscall"
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"time"
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"github.com/snip/backend/internal/adapter/postgres"
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"github.com/snip/backend/internal/config"
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"github.com/snip/backend/internal/di"
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)
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func main() {
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log.SetFlags(log.LstdFlags | log.Lmsgprefix)
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if len(os.Args) < 2 {
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usage()
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os.Exit(2)
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}
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cmd := os.Args[1]
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cfg := config.Load()
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ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
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defer stop()
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container := di.New(cfg)
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var (
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app *di.App
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addr string
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err error
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)
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switch cmd {
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case "migrate":
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if cfg.Store != "postgres" {
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log.Printf("snip migrate: STORE=%s, nothing to do", cfg.Store)
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os.Exit(0)
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}
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if err := postgres.Migrate(ctx, cfg.DatabaseURL); err != nil {
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log.Fatalf("snip migrate: %v", err)
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}
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log.Println("snip migrate: schema is up to date")
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os.Exit(0)
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case "frontend":
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app, addr = container.BuildFrontend(), listenAddr("8081")
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case "api":
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app, err = container.BuildAPI(ctx)
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addr = listenAddr("8080")
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case "redirect":
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app, err = container.BuildRedirect(ctx)
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addr = listenAddr("8082")
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default:
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usage()
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os.Exit(2)
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}
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if err != nil {
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log.Fatalf("snip %s: startup failed: %v", cmd, err)
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}
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defer app.Close()
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serve(ctx, cmd, addr, app.Handler)
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}
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func listenAddr(def string) string {
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if p := os.Getenv("PORT"); p != "" {
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return ":" + p
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}
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return ":" + def
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}
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func serve(ctx context.Context, name, addr string, h http.Handler) {
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srv := &http.Server{
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Addr: addr,
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Handler: h,
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ReadHeaderTimeout: 5 * time.Second,
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}
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go func() {
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log.Printf("snip %s listening on %s", name, addr)
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if err := srv.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
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log.Fatalf("snip %s: %v", name, err)
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}
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}()
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<-ctx.Done()
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log.Printf("snip %s: shutting down", name)
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shutCtx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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_ = srv.Shutdown(shutCtx)
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}
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func usage() {
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fmt.Fprintln(os.Stderr, "usage: snip <migrate|api|frontend|redirect>")
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}
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