yuxuanhui
97 lines
2.4 KiB
Go
97 lines
2.4 KiB
Go
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/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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"ballet-island/backend/internal/database"
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"ballet-island/backend/internal/httpapi"
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"ballet-island/backend/internal/identity"
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"github.com/jackc/pgx/v5/pgxpool"
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)
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func main() {
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slog.SetDefault(slog.New(slog.NewJSONHandler(os.Stdout, nil)))
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if err := run(); err != nil {
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slog.Error("server stopped", "error", err)
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os.Exit(1)
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}
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}
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func run() error {
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ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
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defer stop()
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databaseURL := os.Getenv("DATABASE_URL")
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if databaseURL == "" {
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for _, key := range []string{"PGHOST", "PGDATABASE", "PGUSER", "PGPASSWORD"} {
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if os.Getenv(key) == "" {
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return fmt.Errorf("%s is required when DATABASE_URL is unset", key)
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}
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}
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}
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// Production uses a URL; local development retains libpq environment variables.
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pool, err := pgxpool.New(ctx, databaseURL)
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if err != nil {
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if databaseURL != "" {
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// Parser errors can include the URL, so do not log the credential-bearing input.
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return errors.New("configure database: invalid DATABASE_URL")
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}
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return fmt.Errorf("configure database: %w", err)
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}
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defer pool.Close()
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startupCtx, cancel := context.WithTimeout(ctx, 30*time.Second)
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err = pool.Ping(startupCtx)
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if err == nil {
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err = database.Migrate(startupCtx, pool)
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}
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cancel()
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if err != nil {
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return fmt.Errorf("connect database: %w", err)
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}
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addr := os.Getenv("HTTP_ADDR")
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if addr == "" {
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addr = "127.0.0.1:8080"
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}
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server := &http.Server{
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Addr: addr,
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Handler: httpapi.NewAppHandler(pool, &identity.WeChat{AppID: os.Getenv("WECHAT_APP_ID"), AppSecret: os.Getenv("WECHAT_APP_SECRET")}, nil),
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ReadHeaderTimeout: 5 * time.Second,
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ReadTimeout: 10 * time.Second,
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WriteTimeout: 10 * time.Second,
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IdleTimeout: 60 * time.Second,
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}
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serverErr := make(chan error, 1)
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go func() {
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slog.Info("server starting", "address", addr)
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serverErr <- server.ListenAndServe()
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}()
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select {
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case err := <-serverErr:
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if !errors.Is(err, http.ErrServerClosed) {
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return err
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}
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case <-ctx.Done():
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slog.Info("server shutting down")
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shutdownCtx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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if err := server.Shutdown(shutdownCtx); err != nil {
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_ = server.Close()
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return fmt.Errorf("shutdown server: %w", err)
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}
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}
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return nil
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}
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