cfn_lint_cloudformation_template_string_validation.py

1import cfnlint.core
2from cfnlint.helpers import load_resources
3
4# The CloudFormation template as a string
5template_body = """
6AWSTemplateFormatVersion: "2010-09-09"
7Resources:
8  myBucket:
9    Type: "AWS::S3::Bucket"
10    Properties:
11      BucketName: 1234  # This should trigger an error (must be a string)
12"""
13
14# Load the standard CloudFormation resources
15resources = load_resources()
16
17# Perform the linting
18# 'None' is passed for the regions to use the defaults
19matches = list(cfnlint.core.lint_to_jsonschema(template_body, resources, regions=[None]))
20
21# Print the results
22if not matches:
23    print("No issues found!")
24else:
25    for match in matches:
26        print(f"[{match.rule.id}] {match.message} at {match.path}")