Coverage for python/lsst/ctrl/mpexec/taskFactory.py : 22%

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# This file is part of ctrl_mpexec. # # Developed for the LSST Data Management System. # This product includes software developed by the LSST Project # (http://www.lsst.org). # See the COPYRIGHT file at the top-level directory of this distribution # for details of code ownership. # # 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, see <http://www.gnu.org/licenses/>.
"""
"""Class instantiating PipelineTasks. """ """Create new PipelineTask instance from its class.
Parameters ---------- taskClass : type PipelineTask class. config : `pex.Config` or None Configuration object, if ``None`` then use task-defined configuration class to create new instance. overrides : `ConfigOverrides` or None Configuration overrides, this should contain all overrides to be applied to a default task config, including instrument-specific, obs-package specific, and possibly command-line overrides. butler : `lsst.daf.butler.Butler` or None Butler instance used to obtain initialization inputs for PipelineTasks. If None, some PipelineTasks will not be usable
Returns ------- Instance of a PipelineTask class or None on errors.
Raises ------ Any exceptions that are raised by PipelineTask constructor or its configuration class are propagated back to caller. """
# configuration if config is None: config = taskClass.ConfigClass() if overrides: overrides.applyTo(config) elif overrides is not None: _LOG.waring("Both config and overrides are specified for task %s, overrides are ignored", taskClass.__name__)
# if we don't have a butler, try to construct without initInputs; # let PipelineTasks raise if that's impossible if butler is None: initInputs = None else: connections = config.connections.ConnectionsClass(config=config) descriptorMap = {} for name in connections.initInputs: attribute = getattr(connections, name) dsType = DatasetType(attribute.name, butler.registry.dimensions.extract(set()), attribute.storageClass) descriptorMap[name] = dsType initInputs = {k: butler.get(v) for k, v in descriptorMap.items()}
# make task instance task = taskClass(config=config, initInputs=initInputs)
return task |