def initialize_event_source(source, node_pool_size, monitor_params):
    """
    Initializes the file event source when reading files from the filesystem.

    This function must be called on the master node before the :func:`event_generator`
    function is called on the worker nodes. There is no need to initialize the event
    source when reading from files, so this function actually does nothing.

    Arguments:

        source (str): the relative or absolute path to a file containing a list of
            files to process (one per line, with their full path).

        node_pool_size (int): the total number of nodes in the OnDA pool, including all
            the worker nodes and the master node.

        monitor_params (:class:`~onda.utils.parameters.MonitorParams`): an object
            storing the OnDA monitor parameters from the configuration file.
    """
    del source
    del node_pool_size
    del monitor_params
