def _validate(self):
"""Check that this object's fields follow our invariants.
"""
from hera_librarian import utils
if '/' in self.name:
raise ValueError('illegal file name "%s": names may not contain "/"' % self.name)
utils.normalize_and_validate_md5(self.md5)
if not (self.size >= 0): # catches NaNs, just in case ...
raise ValueError('illegal size %d of file "%s": negative' % (self.size, self.name))
def test_normalize_and_validate_md5():
"""Test md5sum normalization"""
md5sum = "d41d8cd98f00b204e9800998ecf8427e"
# function does not do anything for text already lowercase
assert utils.normalize_and_validate_md5(md5sum) == md5sum
md5sum_padded = md5sum + " "
assert utils.normalize_and_validate_md5(md5sum_padded) == md5sum
md5sum_upper = md5sum.upper() + " "
assert utils.normalize_and_validate_md5(md5sum_upper) == md5sum
# make sure error is raised when length is incorrect
with pytest.raises(ValueError):
utils.normalize_and_validate_md5(md5sum[:-1])
return
def __init__(self, name, type, obsid, source, size, md5, create_time=None):
if create_time is None:
# We round our times to whole seconds so that they can be
# accurately represented as integer Unix times, just in case
# floating-point rounding could sneak in as an issue.
create_time = datetime.datetime.utcnow().replace(microsecond=0)
from hera_librarian import utils
md5 = utils.normalize_and_validate_md5(md5)
self.name = name
self.type = type
self.create_time = create_time
self.obsid = obsid
self.source = source
self.size = size
self.md5 = md5
self._validate()
