| """ | |
| 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 Validator | |
| from cfnlint.rules.functions._BaseFn import BaseFn, all_types | |
| class Select(BaseFn): | |
| """Check if Select values are correct""" | |
| id = "E1017" | |
| shortdesc = "Select validation of parameters" | |
| description = "Making sure the Select function is properly configured" | |
| source_url = "https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-select.html" | |
| tags = ["functions", "select"] | |
| def __init__(self) -> None: | |
| super().__init__("Fn::Select", all_types, resolved_rule="W1035") | |
| self.fn_select = self.validate | |
| def schema(self, validator: Validator, instance: Any) -> dict[str, Any]: | |
| schema = { | |
| "type": "array", | |
| "maxItems": 2, | |
| "minItems": 2, | |
| "fn_items": [ | |
| { | |
| "functions": ["Ref", "Fn::FindInMap"], | |
| "schema": { | |
| "type": ["integer"], | |
| }, | |
| }, | |
| { | |
| "functions": [ | |
| "Fn::FindInMap", | |
| "Fn::GetAtt", | |
| "Fn::GetAZs", | |
| "Fn::If", | |
| "Fn::Split", | |
| "Fn::Cidr", | |
| "Ref", | |
| ], | |
| "schema": { | |
| "type": ["array"], | |
| "fn_items": { | |
| "functions": [ | |
| "Fn::FindInMap", | |
| "Fn::GetAtt", | |
| "Fn::If", | |
| "Ref", | |
| ], | |
| "schema": { | |
| "type": all_types, | |
| }, | |
| }, | |
| }, | |
| }, | |
| ], | |
| } | |
| if validator.context.transforms.has_language_extensions_transform(): | |
| schema["fn_items"][0]["functions"].append("Fn::Length") # type: ignore | |
| return schema | |