gistfile1.py

import XenAPI


XENAPI_SESSION = None


def get_session():
    xen_api_url = "http://0.0.0.0"
    xen_username = "username"
    xen_password = "password"

    try:
        session = XenAPI.Session(xen_api_url)
        session.xenapi.login_with_password(xen_username, xen_password)
    except XenAPI.Failure as e:
        raise SystemExit(e.details[2])

    return session


def call_xenapi(method, *args):
    # NOTE(jk0): I hate using globals but this will have to do for now.
    global XENAPI_SESSION

    if XENAPI_SESSION is None:
        XENAPI_SESSION = get_session()

    return XENAPI_SESSION.xenapi_request(method, args)


vm_ref = call_xenapi("VM.get_by_name_label", "pre-install 6")
print call_xenapi("VM.revert", vm_ref)