""" Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. SPDX-License-Identifier: MIT-0 """ from cfnlint.decode.node import sub_node from cfnlint.rules import CloudFormationLintRule, RuleMatch class SubUnneeded(CloudFormationLintRule): """Check if Sub is using a variable""" id = "W1020" shortdesc = "Sub isn't needed if it doesn't have a variable defined" description = "Checks sub strings to see if a variable is defined." source_url = "https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-sub.html" tags = ["functions", "sub"] def match(self, cfn): matches = [] sub_objs = cfn.search_deep_class(sub_node) for sub_obj_tuple in sub_objs: path, sub_obj = sub_obj_tuple result_path = path[:] + ["Fn::Sub"] if sub_obj.is_valid(): if not sub_obj.get_string_vars(): message = ( "Fn::Sub isn't needed because there are no variables at {0}" ) matches.append( RuleMatch( result_path, message.format("/".join(map(str, result_path))) ) ) return matches
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Base64.py | File | 1.72 KB | 0644 |
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Cidr.py | File | 11.94 KB | 0644 |
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DynamicReferenceSecureString.py | File | 5.72 KB | 0644 |
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FindInMap.py | File | 11.25 KB | 0644 |
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FindInMapKeys.py | File | 3.89 KB | 0644 |
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GetAtt.py | File | 6.05 KB | 0644 |
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GetAz.py | File | 2.76 KB | 0644 |
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If.py | File | 1.45 KB | 0644 |
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ImportValue.py | File | 2.45 KB | 0644 |
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Join.py | File | 8.63 KB | 0644 |
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Length.py | File | 3.31 KB | 0644 |
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Not.py | File | 978 B | 0644 |
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Ref.py | File | 1.02 KB | 0644 |
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RefExist.py | File | 1.26 KB | 0644 |
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RefInCondition.py | File | 1.36 KB | 0644 |
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RelationshipConditions.py | File | 5.35 KB | 0644 |
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Select.py | File | 4.41 KB | 0644 |
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Split.py | File | 3.11 KB | 0644 |
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Sub.py | File | 9.49 KB | 0644 |
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SubNeeded.py | File | 5.48 KB | 0644 |
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SubNotJoin.py | File | 2 KB | 0644 |
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SubParametersUsed.py | File | 1.4 KB | 0644 |
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SubUnneeded.py | File | 1.27 KB | 0644 |
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ToJsonString.py | File | 1.75 KB | 0644 |
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__init__.py | File | 106 B | 0644 |
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