refactor: change structure project

hub/internal/app/app.go

@@ -0,0 +1,102 @@
+package app
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	standartlog "log"
+	"net"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+	hubdir "github.com/lorsanstand/HomeOps-Hub/hub/internal"
+	"github.com/lorsanstand/HomeOps-Hub/hub/internal/migrator"
+	grpcserv "github.com/lorsanstand/HomeOps-Hub/hub/internal/rpc"
+	"github.com/lorsanstand/HomeOps-Hub/hub/internal/service/hub_service"
+	"github.com/lorsanstand/HomeOps-Hub/hub/internal/store"
+	"github.com/lorsanstand/HomeOps-Hub/shared/config"
+	"github.com/lorsanstand/HomeOps-Hub/shared/log"
+	"github.com/rs/zerolog"
+)
+
+type App struct {
+	cfg *config.Config
+	log zerolog.Logger
+}
+
+func NewApp() *App {
+	cfg, err := config.NewConfig()
+	if err != nil {
+		standartlog.Fatalf("failed get config: %v", err)
+	}
+
+	logger := log.NewLogger(cfg)
+
+	return &App{cfg: cfg, log: logger}
+}
+
+func (a *App) Run() {
+	ctx := context.Background()
+	a.log.Info().Str("host", a.cfg.DBHost).Int("port", a.cfg.DBPort).Msg("connecting to database")
+	migratePGConn, err := sql.Open("pgx", a.cfg.GetURLPostgres())
+	if err != nil {
+		a.log.Error().Err(err).Msg("failed to connect to the database for migrations")
+		return
+	}
+	defer migratePGConn.Close()
+
+	mgrt, err := migrator.NewMigrator(hubdir.MigrationsFS, "migrations")
+	if err != nil {
+		a.log.Error().Err(err).Msg("failed to create migrator")
+		return
+	}
+
+	a.log.Info().Msg("applying database migrations")
+	if err = mgrt.ApplyMigrations(migratePGConn); err != nil {
+		a.log.Error().Err(err).Msg("migrations failed to apply")
+		return
+	}
+	a.log.Info().Msg("migrations applied successfully")
+	migratePGConn.Close()
+
+	a.log.Info().Msg("creating database connection pool")
+	pool, err := pgxpool.New(ctx, a.cfg.GetURLPostgres())
+	if err != nil {
+		a.log.Error().Err(err).Msg("failed to create database connection pool")
+		return
+	}
+	defer pool.Close()
+	a.log.Info().Msg("database connection pool created")
+
+	hubStore := store.NewHubStore(pool)
+	hubService := hub_service.NewHubService(hubStore, a.log)
+
+	a.log.Info().Msg("starting hub service")
+	err = a.hubServe(hubService)
+	if err != nil {
+		a.log.Error().Err(err).Msg("hub service failed to start")
+		return
+	}
+}
+
+func (a *App) hubServe(hubService *hub_service.HubService) error {
+	address := fmt.Sprintf("0.0.0.0:%v", a.cfg.Port)
+	a.log.Info().Str("address", address).Msg("starting gRPC server")
+
+	server := grpcserv.NewHubHandler(hubService, a.log)
+
+	lis, err := net.Listen("tcp", address)
+	if err != nil {
+		a.log.Error().Err(err).Str("address", address).Msg("failed to listen on address")
+		return err
+	}
+	a.log.Info().Str("address", address).Msg("listening on address")
+
+	a.log.Info().Msg("gRPC server is running")
+	err = server.GrpcServer.Serve(lis)
+	if err != nil {
+		a.log.Error().Err(err).Msg("gRPC server error")
+		return err
+	}
+
+	return nil
+}