def _validate_cors_for_route()

in chalice/deploy/validate.py [0:0]

• 19 lines of code
• 8 McCabe index (conditional complexity)

def _validate_cors_for_route(route_url, route_methods):
    # type: (str, Dict[str, app.RouteEntry]) -> None
    entries_with_cors = [
        entry for entry in route_methods.values() if entry.cors
    ]
    if entries_with_cors:
        # If the user has enabled CORS, they can't also have an OPTIONS
        # method because we'll create one for them.  API gateway will
        # raise an error about duplicate methods.
        if 'OPTIONS' in route_methods:
            raise ValueError(
                "Route entry cannot have both cors=True and "
                "methods=['OPTIONS', ...] configured.  When "
                "CORS is enabled, an OPTIONS method is automatically "
                "added for you.  Please remove 'OPTIONS' from the list of "
                "configured HTTP methods for: %s" % route_url)

        if not all(entries_with_cors[0].cors == entry.cors for entry in
                   entries_with_cors):
            raise ValueError(
                "Route may not have multiple differing CORS configurations. "
                "Please ensure all views for \"%s\" that have CORS configured "
                "have the same CORS configuration." % route_url
            )