77 lines
2 KiB
Go
77 lines
2 KiB
Go
package main
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import (
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"context"
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"errors"
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"io"
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"log/slog"
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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/danyel/go-loose/internal/config"
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"github.com/danyel/go-loose/internal/database"
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"github.com/danyel/go-loose/internal/server"
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)
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func main() {
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if len(os.Args) == 2 && os.Args[1] == "-healthcheck" {
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runHealthcheck()
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return
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}
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logger := slog.New(slog.NewJSONHandler(os.Stdout, nil))
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cfg, err := config.Load()
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if err != nil {
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logger.Error("invalid configuration", "error", err)
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os.Exit(1)
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}
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ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
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defer stop()
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db, err := database.Open(ctx, cfg.DatabaseURL)
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if err != nil {
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logger.Error("database connection failed", "error", err)
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os.Exit(1)
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}
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defer db.Close()
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if err := database.Migrate(ctx, db); err != nil {
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logger.Error("database migration failed", "error", err)
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os.Exit(1)
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}
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app, err := server.New(ctx, cfg, db, logger)
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if err != nil {
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logger.Error("server initialization failed", "error", err)
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os.Exit(1)
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}
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httpServer := &http.Server{
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Addr: cfg.Addr, Handler: app.Handler(), ReadHeaderTimeout: 5 * time.Second,
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ReadTimeout: 15 * time.Second, WriteTimeout: 30 * time.Second, IdleTimeout: 90 * time.Second,
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}
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go func() {
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logger.Info("Go Loose listening", "address", cfg.Addr)
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if err := httpServer.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
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logger.Error("HTTP server failed", "error", err)
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stop()
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}
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}()
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<-ctx.Done()
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shutdownContext, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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if err := httpServer.Shutdown(shutdownContext); err != nil {
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logger.Error("graceful shutdown failed", "error", err)
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}
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}
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func runHealthcheck() {
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client := &http.Client{Timeout: 2 * time.Second}
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response, err := client.Get("http://127.0.0.1:8080/healthz")
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if err != nil {
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os.Exit(1)
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}
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defer response.Body.Close()
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_, _ = io.Copy(io.Discard, response.Body)
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if response.StatusCode != http.StatusOK {
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os.Exit(1)
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}
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}
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