Coverage for python/lsst/ap/verify/dataset.py : 37%

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1#
2# This file is part of ap_verify.
3#
4# Developed for the LSST Data Management System.
5# This product includes software developed by the LSST Project
6# (http://www.lsst.org).
7# See the COPYRIGHT file at the top-level directory of this distribution
8# for details of code ownership.
9#
10# This program is free software: you can redistribute it and/or modify
11# it under the terms of the GNU General Public License as published by
12# the Free Software Foundation, either version 3 of the License, or
13# (at your option) any later version.
14#
15# This program is distributed in the hope that it will be useful,
16# but WITHOUT ANY WARRANTY; without even the implied warranty of
17# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18# GNU General Public License for more details.
19#
20# You should have received a copy of the GNU General Public License
21# along with this program. If not, see <http://www.gnu.org/licenses/>.
22#
24__all__ = ["Dataset"]
26import os
27import warnings
29from deprecated.sphinx import deprecated
31import lsst.daf.persistence as dafPersistence
32import lsst.daf.butler as dafButler
33import lsst.obs.base as obsBase
34import lsst.pex.exceptions as pexExcept
35from lsst.utils import getPackageDir
37from .config import Config
40class Dataset:
41 """A dataset supported by ``ap_verify``.
43 Any object of this class is guaranteed to represent a ready-for-use
44 ap_verify dataset, barring concurrent changes to the file system or EUPS
45 operations. Constructing a Dataset does not create a compatible output
46 repository(ies), which can be done by calling `makeCompatibleRepo`.
48 Parameters
49 ----------
50 datasetId : `str`
51 The name of the dataset package. A tag identifying the dataset is also
52 accepted, but this usage is deprecated.
54 Raises
55 ------
56 RuntimeError
57 Raised if `datasetId` exists, but is not correctly organized or incomplete
58 ValueError
59 Raised if `datasetId` could not be loaded.
60 """
62 def __init__(self, datasetId):
63 self._id = datasetId
64 # daf.persistence.Policy's behavior on missing keys is apparently undefined
65 # test for __getattr__ *either* raising KeyError or returning None
66 try:
67 datasetPackage = self._getDatasetInfo()[datasetId]
68 if datasetPackage is None:
69 raise KeyError
70 else:
71 warnings.warn(f"The {datasetId} name is deprecated, and will be removed after v24.0. "
72 f"Use {datasetPackage} instead.", category=FutureWarning)
73 except KeyError:
74 # if datasetId not known, assume it's a package name
75 datasetPackage = datasetId
77 try:
78 self._dataRootDir = getPackageDir(datasetPackage)
79 except pexExcept.NotFoundError as e:
80 error = f"Cannot find the {datasetPackage} package; is it set up?"
81 raise ValueError(error) from e
82 else:
83 self._validatePackage()
85 self._initPackage(datasetPackage)
87 def _initPackage(self, name):
88 """Prepare the package backing this ap_verify dataset.
90 Parameters
91 ----------
92 name : `str`
93 The EUPS package identifier for the desired package.
94 """
95 # No initialization required at present
96 pass
98 # TODO: remove in DM-29042
99 @staticmethod
100 @deprecated(reason="The concept of 'supported' datasets is deprecated. This "
101 "method will be removed after v24.0.", version="v22.0", category=FutureWarning)
102 def getSupportedDatasets():
103 """The ap_verify dataset IDs that can be passed to this class's constructor.
105 Returns
106 -------
107 datasets : `set` of `str`
108 the set of IDs that will be accepted
110 Raises
111 ------
112 IoError
113 Raised if the config file does not exist or is not readable
114 RuntimeError
115 Raised if the config file exists, but does not contain the expected data
116 """
117 return Dataset._getDatasetInfo().keys()
119 # TODO: remove in DM-29042
120 @staticmethod
121 def _getDatasetInfo():
122 """Return external data on supported ap_verify datasets.
124 If an exception is raised, the program state shall be unchanged.
126 Returns
127 -------
128 datasetToPackage : `dict`-like
129 a map from dataset IDs to package names.
131 Raises
132 ------
133 RuntimeError
134 Raised if the config file exists, but does not contain the expected data
135 """
136 return Config.instance['datasets']
138 @property
139 def datasetRoot(self):
140 """The parent directory containing everything related to the
141 ap_verify dataset (`str`, read-only).
142 """
143 return self._dataRootDir
145 @property
146 def rawLocation(self):
147 """The directory containing the "raw" input data (`str`, read-only).
148 """
149 return os.path.join(self.datasetRoot, 'raw')
151 @property
152 def calibLocation(self):
153 """The directory containing the calibration data (`str`, read-only).
154 """
155 return os.path.join(self.datasetRoot, 'calib')
157 @property
158 def refcatsLocation(self):
159 """The directory containing external astrometric and photometric
160 reference catalogs (`str`, read-only).
161 """
162 return os.path.join(self.datasetRoot, 'refcats')
164 @property
165 def templateLocation(self):
166 """The directory containing the image subtraction templates (`str`, read-only).
167 """
168 return os.path.join(self.datasetRoot, 'templates')
170 @property
171 def configLocation(self):
172 """The directory containing configs that can be used to process the data (`str`, read-only).
173 """
174 return os.path.join(self.datasetRoot, 'config')
176 @property
177 def obsPackage(self):
178 """The name of the obs package associated with this data (`str`, read-only).
179 """
180 return dafPersistence.Butler.getMapperClass(self._stubInputRepo).getPackageName()
182 @property
183 def camera(self):
184 """The name of the Gen 2 camera associated with this data (`str`, read-only).
185 """
186 return dafPersistence.Butler.getMapperClass(self._stubInputRepo).getCameraName()
188 @property
189 def instrument(self):
190 """The Gen 3 instrument associated with this data (`lsst.obs.base.Instrument`, read-only).
191 """
192 butler = dafButler.Butler(self._preloadedRepo, writeable=False)
193 instruments = list(butler.registry.queryDataIds('instrument'))
194 if len(instruments) != 1:
195 raise RuntimeError(f"Dataset does not have exactly one instrument; got {instruments}.")
196 else:
197 return obsBase.Instrument.fromName(instruments[0]["instrument"], butler.registry)
199 @property
200 def _stubInputRepo(self):
201 """The directory containing the data set's input stub (`str`, read-only).
202 """
203 return os.path.join(self.datasetRoot, 'repo')
205 @property
206 def _preloadedRepo(self):
207 """The directory containing the pre-ingested Gen 3 repo (`str`, read-only).
208 """
209 return os.path.join(self.datasetRoot, 'preloaded')
211 @property
212 def _preloadedExport(self):
213 """The file containing an exported registry of `_preloadedRepo` (`str`, read-only).
214 """
215 return os.path.join(self.configLocation, 'export.yaml')
217 def _validatePackage(self):
218 """Confirm that the dataset directory satisfies all assumptions.
220 Raises
221 ------
222 RuntimeError
223 Raised if the package represented by this object does not conform to the
224 dataset framework
226 Notes
227 -----
228 Requires that `self._dataRootDir` has been initialized.
229 """
230 if not os.path.exists(self.datasetRoot):
231 raise RuntimeError('Could not find dataset at ' + self.datasetRoot)
232 if not os.path.exists(self.rawLocation):
233 raise RuntimeError('Dataset at ' + self.datasetRoot + 'is missing data directory')
234 if not os.path.exists(self.calibLocation):
235 raise RuntimeError('Dataset at ' + self.datasetRoot + 'is missing calibration directory')
236 # Template and refcat directories might not be subdirectories of self.datasetRoot
237 if not os.path.exists(self.templateLocation):
238 raise RuntimeError('Dataset is missing template directory at ' + self.templateLocation)
239 if not os.path.exists(self.refcatsLocation):
240 raise RuntimeError('Dataset is missing reference catalog directory at ' + self.refcatsLocation)
241 if not os.path.exists(self._stubInputRepo):
242 raise RuntimeError('Dataset at ' + self.datasetRoot + 'is missing stub repo')
243 if not _isRepo(self._stubInputRepo):
244 raise RuntimeError('Stub repo at ' + self._stubInputRepo + 'is missing mapper file')
246 def __eq__(self, other):
247 """Test that two Dataset objects are equal.
249 Two objects are equal iff they refer to the same ap_verify dataset.
250 """
251 return self.datasetRoot == other.datasetRoot
253 def __repr__(self):
254 """A string representation that can be used to reconstruct the dataset.
255 """
256 return f"Dataset({self._id!r})"
258 def makeCompatibleRepo(self, repoDir, calibRepoDir):
259 """Set up a directory as a Gen 2 repository compatible with this ap_verify dataset.
261 If the directory already exists, any files required by the dataset will
262 be added if absent; otherwise the directory will remain unchanged.
264 Parameters
265 ----------
266 repoDir : `str`
267 The directory where the output repository will be created.
268 calibRepoDir : `str`
269 The directory where the output calibration repository will be created.
270 """
271 mapperArgs = {'mapperArgs': {'calibRoot': calibRepoDir}}
272 if _isRepo(self.templateLocation):
273 # Stub repo is not a parent because can't mix v1 and v2 repositories in parents list
274 dafPersistence.Butler(inputs=[{"root": self.templateLocation, "mode": "r"}],
275 outputs=[{"root": repoDir, "mode": "rw", **mapperArgs}])
276 else:
277 dafPersistence.Butler(inputs=[{"root": self._stubInputRepo, "mode": "r"}],
278 outputs=[{"root": repoDir, "mode": "rw", **mapperArgs}])
280 def makeCompatibleRepoGen3(self, repoDir):
281 """Set up a directory as a Gen 3 repository compatible with this ap_verify dataset.
283 If the repository already exists, this call has no effect.
285 Parameters
286 ----------
287 repoDir : `str`
288 The directory where the output repository will be created.
289 """
290 # No way to tell makeRepo "create only what's missing"
291 try:
292 seedConfig = dafButler.Config()
293 # Checksums greatly slow importing of large repositories
294 seedConfig["datastore", "checksum"] = False
295 repoConfig = dafButler.Butler.makeRepo(repoDir, config=seedConfig)
296 butler = dafButler.Butler(repoConfig, writeable=True)
297 butler.import_(directory=self._preloadedRepo, filename=self._preloadedExport,
298 transfer="auto")
299 except FileExistsError:
300 pass
303def _isRepo(repoDir):
304 """Test whether a directory has been set up as a repository.
305 """
306 return os.path.exists(os.path.join(repoDir, '_mapper')) \
307 or os.path.exists(os.path.join(repoDir, 'repositoryCfg.yaml'))