def get_normandy_jexl():
global _cached_jexl
if not _cached_jexl:
_cached_jexl = JEXL()
# Add mock transforms for validation. See
# https://mozilla.github.io/normandy/user/filters.html#transforms
# for a list of what transforms we expect to be available.
transforms = [
"bucketSample",
"date",
"keys",
"length",
"mapToProperty",
"preferenceExists",
"preferenceIsUserSet",
"preferenceValue",
"regExpMatch",
"stableSample",
"versionCompare",
]
for transform in transforms:
_cached_jexl.add_transform(transform, lambda x: x)
return _cached_jexl
def test_extract_transforms(expression, expected_transforms):
jexl = JEXL()
jexl.add_transform("transform1", lambda x: x)
jexl.add_transform("transform2", lambda x: x)
assert set(
jexl.analyze(
expression,
functools.partial(ExtractTransformSubjectAnalyzer,
transforms=["transform1"]),
)) == set(expected_transforms)
def validate_extra_filter_expression(self, value):
jexl = JEXL()
# Add mock transforms for validation. See
# http://normandy.readthedocs.io/en/latest/user/filter_expressions.html#transforms
# for a list of what transforms we expect to be available.
jexl.add_transform('date', lambda x: x)
jexl.add_transform('stableSample', lambda x: x)
jexl.add_transform('bucketSample', lambda x: x)
errors = list(jexl.validate(value))
if errors:
raise serializers.ValidationError(errors)
return value
def validate_extra_filter_expression(self, value):
if value:
jexl = JEXL()
# Add mock transforms for validation. See
# https://mozilla.github.io/normandy/user/filters.html#transforms
# for a list of what transforms we expect to be available.
jexl.add_transform("date", lambda x: x)
jexl.add_transform("stableSample", lambda x: x)
jexl.add_transform("bucketSample", lambda x: x)
jexl.add_transform("preferenceValue", lambda x: x)
jexl.add_transform("preferenceIsUserSet", lambda x: x)
jexl.add_transform("preferenceExists", lambda x: x)
errors = list(jexl.validate(value))
if errors:
raise serializers.ValidationError(errors)
return value
def validate_extra_filter_expression(self, value):
jexl = JEXL()
# Add mock transforms for validation. See
# http://normandy.readthedocs.io/en/latest/user/filter_expressions.html#transforms
# for a list of what transforms we expect to be available.
jexl.add_transform('date', lambda x: x)
jexl.add_transform('stableSample', lambda x: x)
jexl.add_transform('bucketSample', lambda x: x)
jexl.add_transform('preferenceValue', lambda x: x)
jexl.add_transform('preferenceIsUserSet', lambda x: x)
jexl.add_transform('preferenceExists', lambda x: x)
try:
errors = list(jexl.validate(value))
except Exception as exc:
# The JEXL parser can occasionally throw exceptions when
# called to validate certain invalid inputs.
# Catch them and at least indicate the field that failed,
# even if we can't explain exactly what the problem was.
# See https://github.com/mozilla/normandy/issues/1059.
error = f'The JEXL parser failed to validate {value}'
raise serializers.ValidationError([error])
if errors:
raise serializers.ValidationError(errors)
return value
def validate_extra_filter_expression(self, value):
if value:
jexl = JEXL()
# Add mock transforms for validation. See
# http://normandy.readthedocs.io/en/latest/user/filter_expressions.html#transforms
# for a list of what transforms we expect to be available.
jexl.add_transform("date", lambda x: x)
jexl.add_transform("stableSample", lambda x: x)
jexl.add_transform("bucketSample", lambda x: x)
jexl.add_transform("preferenceValue", lambda x: x)
jexl.add_transform("preferenceIsUserSet", lambda x: x)
jexl.add_transform("preferenceExists", lambda x: x)
errors = list(jexl.validate(value))
if errors:
raise serializers.ValidationError(errors)
return value
def to_jexl(self):
built_expression = "(" + self.initial_data["expression"] + ")"
jexl = JEXL()
# Add mock transforms for validation. See
# https://mozilla.github.io/normandy/user/filters.html#transforms
# for a list of what transforms we expect to be available.
jexl.add_transform("date", lambda x: x)
jexl.add_transform("stableSample", lambda x: x)
jexl.add_transform("bucketSample", lambda x: x)
jexl.add_transform("preferenceValue", lambda x: x)
jexl.add_transform("preferenceIsUserSet", lambda x: x)
jexl.add_transform("preferenceExists", lambda x: x)
errors = list(jexl.validate(built_expression))
if errors:
raise serializers.ValidationError(errors)
return built_expression