| """ |
| Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. |
| SPDX-License-Identifier: MIT-0 |
| """ |
|
|
| from typing import Any |
|
|
| from cfnlint.jsonschema import ValidationError, Validator |
| from cfnlint.rules.jsonschema.CfnLintKeyword import CfnLintKeyword |
|
|
|
|
| class DependsOn(CfnLintKeyword): |
| """Check Base Resource Configuration""" |
|
|
| id = "E3005" |
| shortdesc = "Check DependsOn values for Resources" |
| description = "Check that the DependsOn values are valid" |
| source_url = "https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-attribute-dependson.html" |
| tags = ["resources", "dependson"] |
|
|
| def __init__(self): |
| super().__init__(keywords=["Resources/*/DependsOn", "Resources/*/DependsOn/*"]) |
|
|
| def validate(self, validator: Validator, s: Any, instance: Any, schema: Any): |
| if not validator.is_type(instance, "string"): |
| return |
|
|
| resources = list(validator.context.resources.keys()) |
|
|
| if len(validator.context.path.path) > 1: |
| if ( |
| isinstance(validator.context.path.path[1], str) |
| and validator.context.path.path[1] in resources |
| ): |
| resources.remove(validator.context.path.path[1]) |
|
|
| if instance not in resources: |
| yield ValidationError( |
| f"{instance!r} is not one of {resources!r}", |
| ) |
| return |
|
|
| if not validator.cfn: |
| return |
|
|
| for scenario in validator.cfn.is_resource_available( |
| list(validator.context.path.path), instance |
| ): |
| if scenario: |
| scenario_text = " and ".join( |
| [ |
| f"when condition {k!r} is {scenario[k]!r}" |
| for k in sorted(scenario) |
| ] |
| ) |
|
|
| yield ValidationError(f"{instance!r} will not exist {scenario_text}") |
|
|
