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Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
SPDX-License-Identifier: MIT-0
"""
from __future__ import annotations
from typing import Any
from cfnlint.jsonschema import ValidationError, ValidationResult, Validator
from cfnlint.rules import CloudFormationLintRule
class PropertyNames(CloudFormationLintRule):
"""Check maxLength values are correct"""
def __init__(self, approaching_limit_rule: str | None = None) -> None:
super().__init__()
self.config["threshold"] = 0.9
self.approaching_limit_rule = approaching_limit_rule
self.child_rules = {}
if self.approaching_limit_rule:
self.child_rules[self.approaching_limit_rule] = None
def _max_length(
self, validator: Validator, mL: int, instance: Any, schema: dict[str, Any]
):
if not validator.is_type(instance, "string"):
return
percent = len(instance) / mL
if percent > 1:
yield ValidationError(message=f"{instance!r} is longer than {mL}")
return
if percent > self.config["threshold"] and self.approaching_limit_rule:
rule = self.child_rules.get(self.approaching_limit_rule)
if not rule:
return
if hasattr(rule, "maxLength") and callable(getattr(rule, "maxLength")):
validate = getattr(rule, "maxLength")
yield from validate(validator, mL, instance, schema)
return
yield ValidationError(
f"{instance!r} is approaching the max length of {mL}",
rule=rule,
)
def propertyNames(
self,
validator: Validator,
propertyNames: Any,
instance: Any,
schema: dict[str, Any],
) -> ValidationResult:
if not validator.is_type(instance, "object"):
return
v = validator.extend(
validators={
"maxLength": self._max_length,
}
)({})
for property in instance:
yield from v.descend(
instance=property,
schema=propertyNames,
path=property,
)
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