glance.py 文件源码

def get_api_servers():
    """Return iterator of glance api_servers.

    Return iterator of glance api_servers to cycle through the
    list, looping around to the beginning if necessary.
    """

    api_servers = []

    ks = keystone_client.get_client()

    catalog = keystone_client.get_service_catalog(ks)

    image_service = catalog.url_for(service_type='image')
    if image_service:
        api_servers.append(image_service)

    if CONF.glance_api_servers:
        for api_server in CONF.glance_api_servers:
            api_servers.append(api_server)

    random.shuffle(api_servers)
    return itertools.cycle(api_servers)