feat: store connection and source CRUD

internal/store/mysql.go

@@ -0,0 +1,28 @@
+package store
+
+import (
+	"fmt"
+
+	"aiaa-notification-service/internal/config"
+
+	"github.com/jmoiron/sqlx"
+	_ "github.com/go-sql-driver/mysql"
+)
+
+type Store struct {
+	DB *sqlx.DB
+}
+
+func NewStore(cfg config.DatabaseConfig) (*Store, error) {
+	db, err := sqlx.Connect("mysql", cfg.DSN())
+	if err != nil {
+		return nil, fmt.Errorf("connect mysql: %w", err)
+	}
+	db.SetMaxOpenConns(25)
+	db.SetMaxIdleConns(5)
+	return &Store{DB: db}, nil
+}
+
+func (s *Store) Close() error {
+	return s.DB.Close()
+}