def api_gateway_authorizer()

in source/token-authorizer/chalice/app.py [0:0]

• 10 lines of code
• 5 McCabe index (conditional complexity)

def api_gateway_authorizer(event, _):
    """
    This function is a Lambda handler for an API Gateway custom authorizer
    """
    token = event.get('authorizationToken', '')
    arn = event.get('methodArn', '')
    if arn and token:
        # return a wildcard resource in the policy that covers all
        # potential API requests while the response is cached
        base_arn, _, _ = arn.split('/', 2)
        resource = f"{base_arn}/*/*/*"
        return check_authorizer_token(token, resource)
    # no token or method ARN in the request
    return Response(body='Request lacks valid authorization credentials',
                    status_code=401,
                    headers={'Content-Type': 'text/plain'})