def client(username, password, trust_id=None):
'''return a Swift client
This will return a Swift client for the specified username scoped to the
current context project, unless a trust identifier is specified.
If a trust identifier is present then the Swift client will be created
based on a preauthorized token generated by the username scoped to the
trust identifier.
:param username: The username for the Swift client
:param password: The password associated with the username
:param trust_id: A trust identifier for scoping the username (optional)
:returns: A Swift client object
'''
if trust_id:
proxyauth = k.auth_for_proxy(username, password, trust_id)
return client_from_token(k.token_from_auth(proxyauth))
else:
return swiftclient.Connection(
auth_version='2.0',
cacert=CONF.swift.ca_file,
insecure=CONF.swift.api_insecure,
authurl=su.retrieve_auth_url(CONF.keystone.endpoint_type),
user=username,
key=password,
tenant_name=sh.retrieve_tenant(),
retries=CONF.retries.retries_number,
retry_on_ratelimit=True,
starting_backoff=CONF.retries.retry_after,
max_backoff=CONF.retries.retry_after)
