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1
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# Licensed under a 3-clause BSD style license - see LICENSE.rst
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2
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1
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"""
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3
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Sub-query to obtain test parameters from service providers.
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4
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5
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In case USVO service is unstable, it does the following:
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6
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7
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#. Try USVO production server.
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8
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#. If SR > 0.1, force SR to be 0.1.
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9
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#. If fails, use RA=0 DEC=0 SR=0.1.
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10
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11
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"""
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12
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# STDLIB
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13
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1
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import warnings
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14
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1
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from collections import OrderedDict
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15
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16
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# ASTROPY
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17
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1
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from astropy.table import Table
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18
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1
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from astropy.utils.data import get_readable_fileobj
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19
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1
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from astropy.utils.exceptions import AstropyUserWarning
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20
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21
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# LOCAL
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22
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1
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from astroquery.utils.commons import ASTROPY_LT_4_1
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23
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24
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1
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__all__ = ['parse_cs']
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25
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26
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27
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1
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def parse_cs(ivoid, cap_index=1):
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28
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"""Return test query pars as dict for given IVO ID and capability index."""
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29
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0
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if isinstance(ivoid, bytes): # ASTROPY_LT_4_1
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30
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0
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ivoid = ivoid.decode('ascii')
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31
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32
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# Production server.
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33
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0
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url = ("http://vao.stsci.edu/regtap/tapservice.aspx/sync?lang=adql&"
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34
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"query=select%20detail_xpath%2Cdetail_value%20from%20"
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35
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"rr.res_detail%20where%20"
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36
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"ivoid%3D%27{0}%27%20and%20cap_index={1}%20and%20"
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37
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"detail_xpath%20in%20%28%27/capability/testQuery/ra%27%2C"
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38
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"%27/capability/testQuery/dec%27%2C%27/capability/testQuery/sr%27"
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39
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"%29".format(ivoid, cap_index))
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40
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41
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0
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urls_failed = False
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42
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0
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default_sr = 0.1
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43
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44
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0
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try:
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45
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0
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with get_readable_fileobj(url, encoding='binary',
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46
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show_progress=False) as fd:
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47
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0
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t_query = Table.read(fd, format='votable')
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48
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except Exception as e: # pragma: no cover
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49
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urls_failed = True
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50
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urls_errmsg = '{0} raised {1}, using default'.format(
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51
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url, str(e))
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52
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53
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0
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if not urls_failed:
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54
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0
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try:
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55
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0
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xpath = t_query['detail_xpath']
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56
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0
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if ASTROPY_LT_4_1:
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57
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0
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ra = float(
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58
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t_query[xpath == b'/capability/testQuery/ra']['detail_value'])
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59
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0
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dec = float(
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60
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t_query[xpath == b'/capability/testQuery/dec']['detail_value'])
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61
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0
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sr = float(
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62
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t_query[xpath == b'/capability/testQuery/sr']['detail_value'])
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63
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else:
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64
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0
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ra = float(
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65
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t_query[xpath == '/capability/testQuery/ra']['detail_value'])
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66
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0
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dec = float(
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67
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t_query[xpath == '/capability/testQuery/dec']['detail_value'])
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68
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0
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sr = float(
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69
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t_query[xpath == '/capability/testQuery/sr']['detail_value'])
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70
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71
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# Handle big SR returning too big a table for some queries, causing
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72
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# tests to fail due to timeout.
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73
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0
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if sr > default_sr:
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74
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0
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warnings.warn(
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75
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'SR={0} is too large, using SR={1} for {2},{3}'.format(
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76
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sr, default_sr, ivoid, cap_index), AstropyUserWarning)
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77
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0
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sr = default_sr
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78
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79
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0
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d = OrderedDict({'RA': ra, 'DEC': dec, 'SR': sr})
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80
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|
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81
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except Exception as e: # pragma: no cover
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82
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urls_failed = True
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83
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urls_errmsg = ('Failed to retrieve test query parameters for '
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84
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'{0},{1}, using default: {2}'.format(ivoid, cap_index, str(e)))
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85
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86
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# If no test query found, use default
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87
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if urls_failed: # pragma: no cover
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|
88
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d = OrderedDict({'RA': 0, 'DEC': 0, 'SR': default_sr})
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|
89
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warnings.warn(urls_errmsg, AstropyUserWarning)
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90
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91
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0
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return d
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lvalerom