129 lines
3.0 KiB
Go
129 lines
3.0 KiB
Go
package main
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import (
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"context"
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"database/sql"
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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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"github.com/joho/godotenv"
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"github.com/robindittmar/dttmr-api/internal/api/router"
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"github.com/robindittmar/dttmr-api/internal/config"
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"github.com/robindittmar/dttmr-api/internal/database"
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"github.com/robindittmar/dttmr-api/internal/telemetry"
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)
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func main() {
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serviceName := "dttmr-api"
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serviceVersion := "0.1.0"
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if err := run(serviceName, serviceVersion); err != nil {
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slog.Error("service crashed")
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os.Exit(1)
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}
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}
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func run(serviceName string, serviceVersion string) error {
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_ = godotenv.Load(".env")
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setupLogging()
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slog.Info("starting service", slog.String("service", serviceName), slog.String("version", serviceVersion))
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cfg := config.Load()
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telCfg := telemetry.Config{
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ServiceName: serviceName,
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ServiceVersion: serviceVersion,
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Endpoint: cfg.OTLPEndpoint,
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Environment: cfg.Environment,
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}
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shutdownTelemetry, err := telemetry.Init(context.Background(), telCfg)
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if err != nil {
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slog.Error("failed to initialize telemetry", err)
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return err
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}
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defer func() {
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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 := shutdownTelemetry(shutdownCtx); err != nil {
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slog.Error("failed to shutdown telemetry", slog.Any("error", err))
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}
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}()
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db, err := database.New(context.Background(), cfg.DatabaseURL)
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if err != nil {
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slog.Error("failed to initialize database", slog.Any("error", err))
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return err
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}
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defer func() {
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err := db.Close()
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if err != nil {
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slog.Error("failed to close database connection", slog.Any("error", err))
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}
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}()
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if err := database.RunMigrations(db); err != nil {
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slog.Error("failed to run migrations", slog.Any("error", err))
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}
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srv := makeServer(db, cfg.Port)
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go func() {
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slog.Info("starting http server", "addr", srv.Addr)
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if err := srv.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
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slog.Error("failed to start http server", err)
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os.Exit(1)
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}
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}()
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quit := make(chan os.Signal, 1)
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signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
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sig := <-quit
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slog.Info("shutting down server...", slog.String("signal", sig.String()))
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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if err := srv.Shutdown(ctx); err != nil {
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slog.Error("server forced to shutdown", slog.Any("error", err))
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return err
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}
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slog.Info("service shutdown successful!")
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return nil
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}
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func setupLogging() {
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baseHandler := slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{
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Level: slog.LevelInfo,
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})
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traceHandler := &telemetry.TraceHandler{Handler: baseHandler}
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logger := slog.New(traceHandler)
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slog.SetDefault(logger)
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}
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func makeServer(db *sql.DB, port int) *http.Server {
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routerConfig := router.Config{
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Database: db,
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}
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mux := router.NewMux(routerConfig)
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srv := &http.Server{
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Addr: fmt.Sprintf(":%d", port),
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Handler: mux,
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ReadTimeout: 5 * time.Second,
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WriteTimeout: 10 * time.Second,
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IdleTimeout: 120 * time.Second,
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}
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return srv
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}
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