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1# This file is part of daf_butler. 

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/>. 

21 

22__all__ = ("retrieveArtifacts",) 

23 

24import logging 

25 

26from .. import Butler 

27from ..core.utils import globToRegex 

28 

29log = logging.getLogger(__name__) 

30 

31 

32def retrieveArtifacts(repo, destination, dataset_type, collections, where, find_first, 

33 transfer, preserve_path, clobber): 

34 """Parameters are those required for querying datasets plus a destination 

35 URI. 

36 

37 Parameters 

38 ---------- 

39 repo : `str` 

40 URI string of the Butler repo to use. 

41 destination : `str` 

42 URI string of the directory to write the artifacts. 

43 dataset_type : `tuple` of `str` 

44 Dataset type names. An empty tuple implies all dataset types. 

45 collections : `tuple` of `str` 

46 Names of collection globs to match. An empty tuple implies all 

47 collections. 

48 where : `str` 

49 Query modification string. 

50 find_first : `bool` 

51 Whether only the first match should be used. 

52 transfer : `str` 

53 Transfer mode to use when placing artifacts in the destination. 

54 preserve_path : `bool` 

55 If `True` the full datastore path will be retained within the 

56 destination directory, else only the filename will be used. 

57 clobber : `bool` 

58 If `True` allow transfers to overwrite files at the destination. 

59 

60 Returns 

61 ------- 

62 transferred : `list` of `ButlerURI` 

63 The destination URIs of every transferred artifact. 

64 """ 

65 dataset = globToRegex(dataset_type) 

66 if not dataset: 

67 dataset = ... 

68 

69 collections = globToRegex(collections) 

70 

71 butler = Butler(repo, writeable=False) 

72 

73 # Need to store in list so we can count the number to give some feedback 

74 # to caller. 

75 refs = list(butler.registry.queryDatasets(datasetType=dataset, 

76 collections=collections, 

77 where=where, 

78 findFirst=find_first)) 

79 

80 log.info("Number of datasets matching query: %d", len(refs)) 

81 

82 transferred = butler.retrieveArtifacts(refs, destination=destination, transfer=transfer, 

83 preserve_path=preserve_path, overwrite=clobber) 

84 return transferred