base.py 文件源码

def url_for(request, service_type, endpoint_type=None, region=None):
    endpoint_type = endpoint_type or getattr(settings,
                                             'OPENSTACK_ENDPOINT_TYPE',
                                             'publicURL')
    fallback_endpoint_type = getattr(settings, 'SECONDARY_ENDPOINT_TYPE', None)

    catalog = request.user.service_catalog
    service = get_service_from_catalog(catalog, service_type)
    if service:
        if not region:
            region = request.user.services_region
        url = get_url_for_service(service,
                                  region,
                                  endpoint_type)
        if not url and fallback_endpoint_type:
            url = get_url_for_service(service,
                                      region,
                                      fallback_endpoint_type)
        if url:
            return url
    raise exceptions.ServiceCatalogException(service_type)