110 lines
3.2 KiB
Go
110 lines
3.2 KiB
Go
// Command server runs the billing microservice: a gRPC server exposing
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// api/proto/billing/v1, backed by its own Postgres database and the
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// Stripe REST API. Replaces internal/handlers/billing.go +
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// internal/billing/*.go.
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package main
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import (
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"context"
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"log/slog"
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"net"
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"os"
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"os/signal"
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"syscall"
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"google.golang.org/grpc"
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"google.golang.org/grpc/health"
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healthpb "google.golang.org/grpc/health/grpc_health_v1"
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"google.golang.org/grpc/reflection"
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billingv1 "enkly/gen/billing/v1"
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"enkly/pkg/envkit"
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"enkly/pkg/eventbus"
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"enkly/pkg/pgkit"
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"enkly/services/billing/internal/application"
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"enkly/services/billing/internal/infrastructure/postgres"
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"enkly/services/billing/internal/infrastructure/stripeapi"
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grpcsrv "enkly/services/billing/internal/interfaces/grpc"
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)
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func main() {
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logger := slog.New(slog.NewTextHandler(os.Stdout, nil))
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if err := envkit.LoadDotEnv(".env"); err != nil {
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logger.Error("load .env", "err", err)
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os.Exit(1)
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}
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var (
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grpcAddr = envkit.String("ENKLY_BILLING_GRPC_ADDR", ":9002")
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postgresDSN = envkit.String("ENKLY_BILLING_POSTGRES_DSN", "postgres://enkly:enkly@localhost:5432/enkly_billing?sslmode=disable")
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rabbitURL = envkit.String("ENKLY_RABBITMQ_URL", "amqp://enkly:enkly@localhost:5672/")
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migrationsPath = envkit.String("ENKLY_BILLING_MIGRATIONS", "migrations/0001_init.sql")
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stripeSecretKey = envkit.String("STRIPE_SECRET_KEY", "")
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stripePublishKey = envkit.String("STRIPE_PUBLISH_KEY", "")
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stripeWebhookKey = envkit.String("STRIPE_WEBHOOK_SECRET", "")
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)
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db, err := pgkit.Open(postgresDSN)
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if err != nil {
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logger.Error("open postgres", "err", err)
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os.Exit(1)
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}
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defer db.Close()
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migrationSQL, err := os.ReadFile(migrationsPath)
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if err != nil {
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logger.Error("read migrations", "path", migrationsPath, "err", err)
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os.Exit(1)
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}
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if err := db.Migrate(context.Background(), string(migrationSQL)); err != nil {
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logger.Error("migrate", "err", err)
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os.Exit(1)
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}
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bus, err := eventbus.Connect(rabbitURL, logger)
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if err != nil {
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logger.Error("connect rabbitmq", "err", err)
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os.Exit(1)
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}
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defer bus.Close()
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svc := &application.Service{
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Subscriptions: postgres.NewSubscriptionRepo(db),
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StripeEvents: postgres.NewStripeEventRepo(db),
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Usage: postgres.NewUsageRepo(db),
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Stripe: stripeapi.New(stripeSecretKey),
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WebhookSecret: stripeWebhookKey,
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Events: bus,
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Logger: logger,
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GetEnv: os.Getenv,
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}
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lis, err := net.Listen("tcp", grpcAddr)
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if err != nil {
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logger.Error("listen", "addr", grpcAddr, "err", err)
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os.Exit(1)
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}
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grpcServer := grpc.NewServer()
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billingv1.RegisterBillingServiceServer(grpcServer, grpcsrv.New(svc, stripePublishKey))
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healthSrv := health.NewServer()
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healthpb.RegisterHealthServer(grpcServer, healthSrv)
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healthSrv.SetServingStatus("", healthpb.HealthCheckResponse_SERVING)
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reflection.Register(grpcServer)
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go func() {
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logger.Info("billing service listening", "addr", grpcAddr, "stripe_configured", stripeSecretKey != "")
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if err := grpcServer.Serve(lis); err != nil {
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logger.Error("serve", "err", err)
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os.Exit(1)
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}
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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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<-ctx.Done()
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logger.Info("shutting down")
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grpcServer.GracefulStop()
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}
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