#!/usr/bin/python
import glanceclient
import keystoneclient
import os

def get_glance():
    keystone_auth = keystoneclient.v2_0.Client(
        auth_url=os.environ["OS_AUTH_URL"],
        username=os.environ["OS_USERNAME"],
        tenant_name=os.environ["OS_TENANT_NAME"],
        password=os.environ["OS_PASSWORD"]
    )
    token = keystone_auth.get_token(keystone_auth.session)
    glance_endpoint = keystone_auth.service_catalog.url_for(
        service_type="image",
        endpoint_type="publicURL"
    )
    glance = glanceclient.Client(
        version="1",
        endpoint=glance_endpoint,
        token=token,
        cacert='/etc/ssl/certs'
    )
    return glance

glance =  get_glance()
print list(glance.images.list())