Ian Cordasco e4a4a98496 Add functions for authenticating to Craton
This adds a cratonclient.auth with craton_auth and keystone_auth
functions to generate cratonclient.session.Session objects with
appropriate authentication plugins set-up.

Closes-bug: 1643961
Change-Id: I661a91241b96ca5c45a91a0add4f74c4ca7e6750
2016-12-06 11:26:09 -06:00

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2.7 KiB
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=======================
Python API User Guide
=======================
Once you have installed ``python-cratonclient``, there are a few things you
need to get started using the Python API:
#. You need to know how to authenticate to the Craton API you wish to talk to
Some Craton API services will be deployed using Craton's in-built
authentication system while others may use Keystone.
#. You need your credentials
#. You need the location of your Craton API service
Let's cover authentication first:
Authenticating to Craton
========================
There are two ways to authenticate to Craton:
#. Using Craton's in-built authentication system (the default)
#. Using Keystone
Craton Authentication
---------------------
In the Craton Authentication case, you need the URL for the Craton API
service, your username, project ID, and token. To set up cratonclient for this
authentication, you need only do the following:
.. code-block:: python
from cratonclient import auth
from cratonclient.v1 import client
craton_session = auth.craton_auth(
username=USERNAME,
token=TOKEN,
project_id=PROJECT_ID,
)
craton = client.Client(
session=craton_session,
url=URL,
)
Keystone Authentication
-----------------------
When authenticating to Craton using Keystone, you need to know:
- the URL to use to authenticate to Keystone which we will refer to as
``AUTH_URL``
- the username
- the password
- the project ID or name
- the user domain ID or name
- and the project domain ID or name
Then, we need to do the following:
.. code-block:: python
from keystoneauth1.identity.v3 import password as password_auth
from keystoneauth1 import session as ksa_session
from cratonclient import auth
from cratonclient.v1 import client
craton_session = auth.keystone_auth(
auth_url=AUTH_URL,
password=PASSWORD,
username=USERNAME,
user_domain_name=USER_DOMAIN_NAME,
project_name=PROJECT_NAME,
project_domain_name=PROJECT_DOMAIN_NAME,
)
craton = client.Client(
session=craton_session,
url=URL,
)
Communicating with Craton
=========================
Now that you've configured your authentication method, you can interact with
your ``craton`` object like so:
.. code-block:: python
for region in craton.regions.list():
print('Region {} contains:'.format(region.name))
for host in craton.hosts.list(region_id=region.id):
print(' {}'.format(host.name))
The Craton API has the following resources:
- Cells
- Hosts
- Network Devices
- Network Interfaces
- Networks
- Projects
- Regions
- Users
Of these:
- Cells
- Hosts
- Regions
Are implemented.