✨ Added close_connection() to sap_rfc (dyvenia#709)

* ✨ Added `close_connection()`

* 📝 Added `close_connection()` in `sap_rfc`

* Update CHANGELOG.md

Co-authored-by: Michał Zawadzki <michalmzawadzki@gmail.com>

---------

Co-authored-by: Michał Zawadzki <michalmzawadzki@gmail.com>

CHANGELOG.md

@@ -20,6 +20,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Added `howto_migrate_sources_tasks_and_flows.md` document. This document will assist the DEs with the viadot 1 -> viadot 2 migration process.
 - `RedshiftSpectrum.from_df()` now automatically creates a folder for the table if not specified in `to_path`
 - Fixed a bug in `Databricks.create_table_from_pandas()`. The function now automatically casts DataFrame types. (#681)
+- Added `close_connection()` to `SAPRFC`
 
 
 ### Changed

viadot/sources/sap_rfc.py

@@ -1,7 +1,7 @@
-import re
 import logging
+import re
 from collections import OrderedDict
-from typing import List, Literal, Dict, Any
+from typing import Any, Dict, List, Literal
 from typing import OrderedDict as OrderedDictType
 from typing import Tuple, Union
 
@@ -153,6 +153,11 @@ def check_connection(self) -> None:
         self.con.ping()
         self.logger.info("Connection has been validated successfully.")
 
+    def close_connection(self) -> None:
+        """Closing RFC connection."""
+        self.con.close()
+        self.logger.info("Connection has been closed successfully.")
+
     def get_function_parameters(
         self,
         function_name: str,
@@ -511,5 +516,6 @@ def to_df(self):
                 if col not in self.select_columns_aliased
             ]
             df.drop(cols_to_drop, axis=1, inplace=True)
+        self.close_connection()
 
         return df