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| 1 | +package main |
| 2 | + |
| 3 | +import ( |
| 4 | + "context" |
| 5 | + "database/sql" |
| 6 | + "fmt" |
| 7 | + "log" |
| 8 | + "log/slog" |
| 9 | + "net/http" |
| 10 | + "os" |
| 11 | + "os/signal" |
| 12 | + "syscall" |
| 13 | + "time" |
| 14 | + |
| 15 | + "github.com/go-chi/chi/v5" |
| 16 | + "github.com/go-chi/chi/v5/middleware" |
| 17 | + "github.com/go-chi/cors" |
| 18 | + "github.com/joelseq/sqliteadmin-go" |
| 19 | + _ "github.com/mattn/go-sqlite3" |
| 20 | + "github.com/spf13/cobra" |
| 21 | +) |
| 22 | + |
| 23 | +var port uint |
| 24 | + |
| 25 | +func init() { |
| 26 | + serveCmd.Flags().UintVarP(&port, "port", "p", 8080, "Port to run server on") |
| 27 | + rootCmd.AddCommand(serveCmd) |
| 28 | +} |
| 29 | + |
| 30 | +var serveCmd = &cobra.Command{ |
| 31 | + Use: "serve [DB_PATH]", |
| 32 | + Short: "Spin up an HTTP server to serve requests to the SQLiteAdmin UI", |
| 33 | + Args: cobra.MinimumNArgs(1), |
| 34 | + Run: func(cmd *cobra.Command, args []string) { |
| 35 | + dbPath := args[0] |
| 36 | + username := os.Getenv("SQLITEADMIN_USERNAME") |
| 37 | + password := os.Getenv("SQLITEADMIN_PASSWORD") |
| 38 | + |
| 39 | + r := getRouter(dbPath, username, password) |
| 40 | + |
| 41 | + addr := fmt.Sprintf(":%d", port) |
| 42 | + |
| 43 | + // Create a done channel to signal when the shutdown is complete |
| 44 | + done := make(chan bool, 1) |
| 45 | + |
| 46 | + httpServer := newHTTPServer(addr, r) |
| 47 | + |
| 48 | + // Run graceful shutdown in a separate goroutine |
| 49 | + go gracefulShutdown(httpServer, done) |
| 50 | + |
| 51 | + err := httpServer.ListenAndServe() |
| 52 | + if err != nil && err != http.ErrServerClosed { |
| 53 | + panic(fmt.Sprintf("http server error: %s", err)) |
| 54 | + } |
| 55 | + |
| 56 | + // Wait for the graceful shutdown to complete |
| 57 | + <-done |
| 58 | + log.Println("Graceful shutdown complete.") |
| 59 | + }, |
| 60 | +} |
| 61 | + |
| 62 | +func newHTTPServer(addr string, mux *chi.Mux) *http.Server { |
| 63 | + return &http.Server{ |
| 64 | + Addr: addr, |
| 65 | + Handler: mux, |
| 66 | + IdleTimeout: time.Minute, |
| 67 | + ReadTimeout: 10 * time.Second, |
| 68 | + WriteTimeout: 30 * time.Second, |
| 69 | + } |
| 70 | +} |
| 71 | + |
| 72 | +func getRouter(dbPath, username, password string) *chi.Mux { |
| 73 | + db, err := sql.Open("sqlite3", dbPath) |
| 74 | + if err != nil { |
| 75 | + log.Fatalf("Error opening database: %v", err) |
| 76 | + } |
| 77 | + |
| 78 | + logger := slog.Default() |
| 79 | + |
| 80 | + // Setup the handler for SQLiteAdmin |
| 81 | + config := sqliteadmin.Config{ |
| 82 | + DB: db, |
| 83 | + Username: username, |
| 84 | + Password: password, |
| 85 | + Logger: logger, |
| 86 | + } |
| 87 | + sh := sqliteadmin.NewHandler(config) |
| 88 | + |
| 89 | + r := chi.NewRouter() |
| 90 | + r.Use(middleware.Logger) |
| 91 | + r.Use(cors.Handler(cors.Options{ |
| 92 | + AllowedOrigins: []string{"https://*", "http://*"}, |
| 93 | + AllowedMethods: []string{"GET", "POST", "PUT", "DELETE", "OPTIONS", "PATCH"}, |
| 94 | + AllowedHeaders: []string{"Accept", "Authorization", "Content-Type"}, |
| 95 | + AllowCredentials: true, |
| 96 | + MaxAge: 300, |
| 97 | + })) |
| 98 | + r.Post("/", sh.HandlePost) |
| 99 | + |
| 100 | + return r |
| 101 | +} |
| 102 | + |
| 103 | +func gracefulShutdown(apiServer *http.Server, done chan bool) { |
| 104 | + // Create context that listens for the interrupt signal from the OS. |
| 105 | + ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM) |
| 106 | + defer stop() |
| 107 | + |
| 108 | + // Listen for the interrupt signal. |
| 109 | + <-ctx.Done() |
| 110 | + |
| 111 | + log.Println("shutting down gracefully, press Ctrl+C again to force") |
| 112 | + |
| 113 | + // The context is used to inform the server it has 5 seconds to finish |
| 114 | + // the request it is currently handling |
| 115 | + ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second) |
| 116 | + defer cancel() |
| 117 | + if err := apiServer.Shutdown(ctx); err != nil { |
| 118 | + log.Printf("Server forced to shutdown with error: %v", err) |
| 119 | + } |
| 120 | + |
| 121 | + log.Println("Server exiting") |
| 122 | + |
| 123 | + // Notify the main goroutine that the shutdown is complete |
| 124 | + done <- true |
| 125 | +} |
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