(bugfix/mysql): Change: Remove whitespace and check for empty strings

[KoenigMjr]

Servus zusammen,

MySQL-Fehler wegen leerem Statement am Schluss von der DB_init Datei weil f.read().split(';') ja korrekterweise nach jedem ";" teilt. Jetzt schließt halt die init_db.sql-Datei mit...

[...]
	frequency varchar(30) not null
);
create unique index boswatch_id_uindex
	on boswatch (id);

ab

und f.read().split(';') macht zum Schluss (nach boswatch(id)) nochmal einen leeren String.

Mit der eingefügten Prüfung auf leere Strings wird das vermieden.

Im Anschluss nochmal der Error:

??? python[22805]: Traceback (most recent call last):
??? python[22805]:    File "/opt/boswatch3/venv/lib/python3.13/site-packages/mysql/connector/connection_cext.py", line 772, in cmd_query
??? python[22805]:       self._cmysql.query(
??? python[22805]:       ~~~~~~~~~~~~~~~~~~^
??? python[22805]:             query,
??? python[22805]:             ^^^^^^
??? python[22805]:       ...<3 lines>...
??? python[22805]:             query_attrs=self.query_attrs,
??? python[22805]:             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
??? python[22805]:       )
??? python[22805]:       ^
??? python[22805]: _mysql_connector.MySQLInterfaceError: Query was empty
??? python[22805]: The above exception was the direct cause of the following exception:
??? python[22805]: Traceback (most recent call last):
??? python[22805]:    File "/opt/boswatch3/bw_server.py", line 79, in <module>
??? python[22805]:       if not bwRoutMan.buildRouters(bwConfig):
??? python[22805]:              ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^
??? python[22805]:    File "/opt/boswatch3/boswatch/router/routerManager.py", line 77, in buildRouters
??? python[22805]:       loadedClass = importedFile.BoswatchPlugin(routeConfig)
??? python[22805]:    File "/opt/boswatch3/plugin/mysql.py", line 35, in __init__
??? python[22805]:       super().__init__(__name__, config)  # you can access the config class on 'self.config'
??? python[22805]:       ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
??? python[22805]:    File "/opt/boswatch3/plugin/pluginBase.py", line 54, in __init__
??? python[22805]:       self.onLoad()
??? python[22805]:       ~~~~~~~~~~~^^
??? python[22805]:    File "/opt/boswatch3/plugin/mysql.py", line 60, in onLoad
??? python[22805]:       self.cursor.execute(stmnt)
??? python[22805]:       ~~~~~~~~~~~~~~~~~~~^^^^^^^
??? python[22805]:    File "/opt/boswatch3/venv/lib/python3.13/site-packages/mysql/connector/cursor_cext.py", line 353, in execute
??? python[22805]:       self._connection.cmd_query(
??? python[22805]:       ~~~~~~~~~~~~~~~~~~~~~~~~~~^
??? python[22805]:             self._stmt_partition["mappable_stmt"],
??? python[22805]:             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
??? python[22805]:       ...<2 lines>...
??? python[22805]:             raw_as_string=self._raw_as_string,
??? python[22805]:             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
??? python[22805]:       )
??? python[22805]:       ^
??? python[22805]:    File "/opt/boswatch3/venv/lib/python3.13/site-packages/mysql/connector/opentelemetry/context_propagation.py", line 97, in wrapper
??? python[22805]:       return method(cnx, *args, **kwargs)
??? python[22805]:    File "/opt/boswatch3/venv/lib/python3.13/site-packages/mysql/connector/connection_cext.py", line 781, in cmd_query
??? python[22805]:       raise get_mysql_exception(
??? python[22805]:             err.errno, msg=err.msg, sqlstate=err.sqlstate
??? python[22805]:       ) from err
??? python[22805]: mysql.connector.errors.ProgrammingError: 1065 (42000): Query was empty

[Schrolli91]

LGTM