Coverage for python/lsst/ctrl/mpexec/taskFactory.py: 28%
31 statements
« prev ^ index » next coverage.py v6.4.2, created at 2022-07-23 02:46 -0700
« prev ^ index » next coverage.py v6.4.2, created at 2022-07-23 02:46 -0700
1# This file is part of ctrl_mpexec.
2#
3# Developed for the LSST Data Management System.
4# This product includes software developed by the LSST Project
5# (http://www.lsst.org).
6# See the COPYRIGHT file at the top-level directory of this distribution
7# for details of code ownership.
8#
9# This program is free software: you can redistribute it and/or modify
10# it under the terms of the GNU General Public License as published by
11# the Free Software Foundation, either version 3 of the License, or
12# (at your option) any later version.
13#
14# This program is distributed in the hope that it will be useful,
15# but WITHOUT ANY WARRANTY; without even the implied warranty of
16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17# GNU General Public License for more details.
18#
19# You should have received a copy of the GNU General Public License
20# along with this program. If not, see <http://www.gnu.org/licenses/>.
22from __future__ import annotations
24__all__ = ["TaskFactory"]
26import logging
27from typing import TYPE_CHECKING, Optional
29from lsst.daf.butler import DatasetType
30from lsst.pipe.base import TaskFactory as BaseTaskFactory
32if TYPE_CHECKING: 32 ↛ 33line 32 didn't jump to line 33, because the condition on line 32 was never true
33 from lsst.daf.butler import Butler
34 from lsst.pipe.base import PipelineTask, PipelineTaskConfig
35 from lsst.pipe.base.configOverrides import ConfigOverrides
37_LOG = logging.getLogger(__name__)
40class TaskFactory(BaseTaskFactory):
41 """Class instantiating PipelineTasks."""
43 def makeTask(
44 self,
45 taskClass: type[PipelineTask],
46 label: Optional[str],
47 config: Optional[PipelineTaskConfig],
48 overrides: Optional[ConfigOverrides],
49 butler: Optional[Butler],
50 ) -> PipelineTask:
51 """Create new PipelineTask instance from its class.
53 Parameters
54 ----------
55 taskClass : type
56 PipelineTask class.
57 label : `str` or `None`
58 The label of the new task; if `None` then use
59 ``taskClass._DefaultName``.
60 config : `pex.Config` or None
61 Configuration object, if ``None`` then use task-defined
62 configuration class to create new instance.
63 overrides : `ConfigOverrides` or None
64 Configuration overrides, this should contain all overrides to be
65 applied to a default task config, including instrument-specific,
66 obs-package specific, and possibly command-line overrides.
67 butler : `lsst.daf.butler.Butler` or None
68 Butler instance used to obtain initialization inputs for
69 PipelineTasks. If None, some PipelineTasks will not be usable
71 Returns
72 -------
73 Instance of a PipelineTask class or None on errors.
75 Raises
76 ------
77 Any exceptions that are raised by PipelineTask constructor or its
78 configuration class are propagated back to caller.
79 """
81 # configuration
82 if config is None:
83 config = taskClass.ConfigClass()
84 if overrides:
85 overrides.applyTo(config)
86 elif overrides is not None:
87 _LOG.warning(
88 "Both config and overrides are specified for task %s, overrides are ignored",
89 taskClass.__name__,
90 )
92 # if we don't have a butler, try to construct without initInputs;
93 # let PipelineTasks raise if that's impossible
94 if butler is None:
95 initInputs = None
96 else:
97 connections = config.connections.ConnectionsClass(config=config)
98 descriptorMap = {}
99 for name in connections.initInputs:
100 attribute = getattr(connections, name)
101 dsType = DatasetType(
102 attribute.name, butler.registry.dimensions.extract(set()), attribute.storageClass
103 )
104 descriptorMap[name] = dsType
105 initInputs = {k: butler.get(v) for k, v in descriptorMap.items()}
107 # Freeze the config
108 config.freeze()
110 # make task instance
111 task = taskClass(config=config, initInputs=initInputs, name=label)
113 return task