def aggregate_metadata_get_by_host(context, host, key=None):
 return IMPL.aggregate_metadata_get_by_host(context, host, key)

def aggregate_metadata_get_by_host ( context , host , key = None ) : return IMPL . aggregate_metadata_get_by_host ( context , host , key )
returns a dict of all metadata based on a metadata key for a specific host .