def discover_engines(self, executor=None):
        """Discover configured engines.

        :param executor: Optional executor module override
        """
        if executor is None:
            executor = getattr(settings, 'FLOW_EXECUTOR', {}).get('NAME', 'resolwe.flow.executors.local')
        self.executor = self.load_executor(executor)
        logger.info(
            __("Loaded '{}' executor.", str(self.executor.__class__.__module__).replace('.prepare', ''))
        )

        expression_engines = getattr(settings, 'FLOW_EXPRESSION_ENGINES', ['resolwe.flow.expression_engines.jinja'])
        self.expression_engines = self.load_expression_engines(expression_engines)
        logger.info(__(
            "Found {} expression engines: {}", len(self.expression_engines), ', '.join(self.expression_engines.keys())
        ))

        execution_engines = getattr(settings, 'FLOW_EXECUTION_ENGINES', ['resolwe.flow.execution_engines.bash'])
        self.execution_engines = self.load_execution_engines(execution_engines)
        logger.info(__(
            "Found {} execution engines: {}", len(self.execution_engines), ', '.join(self.execution_engines.keys())
        ))
def discover_engines ( self , executor = None ) : if executor is None : executor = getattr ( settings , 'FLOW_EXECUTOR' , { } ) . get ( 'NAME' , 'resolwe.flow.executors.local' ) self . executor = self . load_executor ( executor ) logger . info ( __ ( "Loaded '{}' executor." , str ( self . executor . __class__ . __module__ ) . replace ( '.prepare' , '' ) ) ) expression_engines = getattr ( settings , 'FLOW_EXPRESSION_ENGINES' , [ 'resolwe.flow.expression_engines.jinja' ] ) self . expression_engines = self . load_expression_engines ( expression_engines ) logger . info ( __ ( "Found {} expression engines: {}" , len ( self . expression_engines ) , ', ' . join ( self . expression_engines . keys ( ) ) ) ) execution_engines = getattr ( settings , 'FLOW_EXECUTION_ENGINES' , [ 'resolwe.flow.execution_engines.bash' ] ) self . execution_engines = self . load_execution_engines ( execution_engines ) logger . info ( __ ( "Found {} execution engines: {}" , len ( self . execution_engines ) , ', ' . join ( self . execution_engines . keys ( ) ) ) )
Discover configured engines.

        :param executor: Optional executor module override