File size: 2,282 Bytes
b40c49c | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | """
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
|