Source code for spawn.spawners.task_spawner

# spawn
# Copyright (C) 2018-2019, Simmovation Ltd.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
"""Abstract base class for task spawners
"""


[docs]class TaskSpawner:
    """Base class task spawner"""


[docs]    def spawn(self, path_, metadata):
        """Create new derivative of luigi.Task for later execution"""
        raise NotImplementedError()



[docs]    def branch(self):
        """Deep copy task input and dependencies so that they can be edited without affecting trunk object"""
        raise NotImplementedError()