def getRegions(self, username, api_key, project_id, auth_url):
"""Get a list of available regions, given a keystone endpoint and credentials."""
client = APIClient(
username=username,
password=api_key,
project_id=project_id,
auth_url=auth_url,
is_admin=True
)
yield client.keystone_tenants()
serviceCatalog = yield client.serviceCatalog()
ep = []
[ep.extend(x['endpoints']) for x in serviceCatalog]
regions = set([x['region'] for x in ep])
returnValue([{'key': c, 'label': c} for c in sorted(regions)])
