def validate()

in cfn_policy_validator/cfn_tools/schema_validator.py [0:0]

• 56 lines of code
• 2 McCabe index (conditional complexity)

def validate(template):
	# this schema validates that the CloudFormation template has a valid Resources, Parameters, and Mappings section.
	# validating upfront allows us to make assumptions later that we're dealing with a valid template
	template_schema = {
		'type': 'object',
		'properties': {
			'Resources': {
				'type': 'object',
				'patternProperties': {
					alphanumeric_regex: {
						'type': 'object',
						'properties': {
							'Type': {
								'type': 'string'
							},
							'Properties': {
								'type': 'object'
							}
						},
						'required': ['Type']
					}
				},
				'additionalProperties': False
			},
			'Parameters': {
				'type': 'object',
				'additionalProperties': {
					'type': 'object'
				}
			},
			'Mappings': {
				'type': 'object',
				'patternProperties': {
					alphanumeric_regex: {
						'type': 'object',
						'patternProperties': {
							'^.*$': {
								'type': 'object',
								'patternProperties': {
									'^.*$': {
										'type': ['string', 'array'],
										'minProperties': 1
									}
								},
								'minProperties': 1,
								'additionalProperties': False
							}
						},
						'minProperties': 1,
						'additionalProperties': False
					}
				},
				'additionalProperties': False
			}
		},
		'required': ['Resources']
	}

	validate_schema(template, template_schema)