feat(database): implement sql adapter for backwards compatibility

backend/v3/storage/database/dialect/sql/pool.go

@@ -0,0 +1,74 @@
+package sql
+
+import (
+	"context"
+	"database/sql"
+
+	"github.com/zitadel/zitadel/backend/v3/storage/database"
+)
+
+type sqlPool struct {
+	*sql.DB
+}
+
+var _ database.Pool = (*sqlPool)(nil)
+
+func SQLPool(db *sql.DB) *sqlPool {
+	return &sqlPool{
+		DB: db,
+	}
+}
+
+// Acquire implements [database.Pool].
+func (c *sqlPool) Acquire(ctx context.Context) (database.Client, error) {
+	conn, err := c.Conn(ctx)
+	if err != nil {
+		return nil, wrapError(err)
+	}
+	return &sqlConn{Conn: conn}, nil
+}
+
+// Query implements [database.Pool].
+// Subtle: this method shadows the method (Pool).Query of pgxPool.Pool.
+func (c *sqlPool) Query(ctx context.Context, sql string, args ...any) (database.Rows, error) {
+	rows, err := c.QueryContext(ctx, sql, args...)
+	if err != nil {
+		return nil, wrapError(err)
+	}
+	return &Rows{rows}, nil
+}
+
+// QueryRow implements [database.Pool].
+// Subtle: this method shadows the method (Pool).QueryRow of pgxPool.Pool.
+func (c *sqlPool) QueryRow(ctx context.Context, sql string, args ...any) database.Row {
+	return &Row{c.QueryRowContext(ctx, sql, args...)}
+}
+
+// Exec implements [database.Pool].
+// Subtle: this method shadows the method (Pool).Exec of pgxPool.Pool.
+func (c *sqlPool) Exec(ctx context.Context, sql string, args ...any) (int64, error) {
+	res, err := c.ExecContext(ctx, sql, args...)
+	if err != nil {
+		return 0, wrapError(err)
+	}
+	return res.RowsAffected()
+}
+
+// Begin implements [database.Pool].
+func (c *sqlPool) Begin(ctx context.Context, opts *database.TransactionOptions) (database.Transaction, error) {
+	tx, err := c.BeginTx(ctx, transactionOptionsToSQL(opts))
+	if err != nil {
+		return nil, wrapError(err)
+	}
+	return &sqlTx{tx}, nil
+}
+
+// Close implements [database.Pool].
+func (c *sqlPool) Close(_ context.Context) error {
+	return c.DB.Close()
+}
+
+// Migrate implements [database.Migrator].
+func (c *sqlPool) Migrate(ctx context.Context) error {
+	return ErrMigrate
+}