def kernels(self):
if not hasattr(self, '_kernels'):
if 'kernels' in self._props.keys():
try:
self._kernels = util.get_kernels_from_isis_pvl(
self._props['kernels'])
except Exception as e:
self._kernels = self._props['kernels']
else:
if not ale.spice_root:
raise EnvironmentError(
f'ale.spice_root is not set, cannot search for metakernels. ale.spice_root = "{ale.spice_root}"'
)
search_results = util.get_metakernels(
ale.spice_root,
missions=self.short_mission_name,
years=self.utc_start_time.year,
versions='latest')
if search_results['count'] == 0:
raise ValueError(
f'Failed to find metakernels. mission: {self.short_mission_name}, year:{self.utc_start_time.year}, versions="latest" spice root = "{ale.spice_root}"'
)
self._kernels = [search_results['data'][0]['path']]
return self._kernels
def test_get_metakernels_search_args(tmpdir, search_kwargs):
tmpdir.mkdir('foo-b-v01')
tmpdir.mkdir('bar-b-v01')
open(tmpdir.join('foo-b-v01', 'foo_2009_v01.tm'), 'w').close()
open(tmpdir.join('bar-b-v01', 'bar_9009_v01.tm'), 'w').close()
open(tmpdir.join('bar-b-v01', 'bar_2009_v10.tm'), 'w').close()
test_mk = tmpdir.join('bar-b-v01', 'bar_2010_v20.tm')
open(test_mk, 'w').close()
search_result = util.get_metakernels(str(tmpdir), **search_kwargs)
expected = {
'count':
1,
'data': [{
'year': '2010',
'mission': 'bar',
'version': 'v20',
'path': test_mk
}]
}
assert search_result == expected
def test_get_metakernels(tmpdir, search_kwargs, expected):
tmpdir.mkdir('foo-b-v01')
tmpdir.mkdir('bar-b-v01')
open(tmpdir.join('foo-b-v01', 'foo_2009_v01.tm'), 'w').close()
open(tmpdir.join('bar-b-v01', 'bar_2010_v02.tm'), 'w').close()
search_result = util.get_metakernels(str(tmpdir), **search_kwargs)
# we can't know the tmpdir at parameterization, append it here
for r in expected['data']:
r['path'] = str(tmpdir.join(r['path']))
assert search_result == expected
def kernels(self):
"""
Get the NAIF SPICE Kernels to furnish
There are two ways to specify which kernels a driver will use:
1. Passing the 'kernels' property into load(s) or at instantiation.
This can be either a straight iterable or a dictionary that specifies
the kernels in ISIS style ('TargetPosition', 'InstrumentPosition', etc).
2. Set the ALESPICEROOT environment variable. This variable should be
the path to a directory that contains directories whose naming
convention matches the PDS Kernel Archives format,
`shortMissionName-versionInfo`. The directory corresponding to the
driver's mission will be searched for the approriate meta kernel to
load.
See Also
--------
ale.util.get_kernels_from_isis_pvl : Function used to parse ISIS style dict
ale.util.get_metakernels : Function that searches ALESPICEROOT for meta kernels
ale.util.generate_kernels_from_cube : Helper function to get an ISIS style dict
from an ISIS cube that has been through
spiceinit
"""
if not hasattr(self, '_kernels'):
if 'kernels' in self._props.keys():
try:
self._kernels = util.get_kernels_from_isis_pvl(
self._props['kernels'])
except Exception as e:
self._kernels = self._props['kernels']
else:
if not ale.spice_root:
raise EnvironmentError(
f'ale.spice_root is not set, cannot search for metakernels. ale.spice_root = "{ale.spice_root}"'
)
search_results = util.get_metakernels(
ale.spice_root,
missions=self.short_mission_name,
years=self.utc_start_time.year,
versions='latest')
if search_results['count'] == 0:
raise ValueError(
f'Failed to find metakernels. mission: {self.short_mission_name}, year:{self.utc_start_time.year}, versions="latest" spice root = "{ale.spice_root}"'
)
self._kernels = [search_results['data'][0]['path']]
return self._kernels
def test_get_metakernels_search_counts(tmpdir, search_kwargs, expected_count):
tmpdir.mkdir('foo-b-v01')
tmpdir.mkdir('bar-b-v01')
tmpdir.mkdir('baz-b-v100')
open(tmpdir.join('foo-b-v01', 'foo_2009_v01.tm'), 'w').close()
open(tmpdir.join('foo-b-v01', 'foo_2009_v20.tm'), 'w').close()
open(tmpdir.join('foo-b-v01', 'foo_2010_v20.tm'), 'w').close()
open(tmpdir.join('bar-b-v01', 'bar_9009_v01.tm'), 'w').close()
open(tmpdir.join('bar-b-v01', 'bar_2009_v10.tm'), 'w').close()
open(tmpdir.join('bar-b-v01', 'bar_2010_v02.tm'), 'w').close()
open(tmpdir.join('baz-b-v100', 'baz_1990_v10.tm'), 'w').close()
search_result = util.get_metakernels(str(tmpdir), **search_kwargs)
assert search_result['count'] == expected_count