Update example usage
The example usage was really out of date and doesn't work on modern clients. This updates it to a functional state. Change-Id: I96bf56e3cd3943f8c0e210dd873bc4cae02a1ea8
This commit is contained in:
Matt Fischer
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286df261cb
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b0208baa7f
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@ -1,111 +1,33 @@
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Using the Client Programmatically
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=================================
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.. testsetup::
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# Creates some vars we don't show in the docs.
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AUTH_URL="http://localhost:8779/v1.0/auth"
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from troveclient import Dbaas
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from troveclient import auth
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class FakeAuth(auth.Authenticator):
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def authenticate(self):
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class FakeCatalog(object):
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def __init__(self, auth):
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self.auth = auth
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def get_public_url(self):
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return "%s/%s" % ('http://localhost:8779/v1.0',
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self.auth.tenant)
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def get_token(self):
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return self.auth.tenant
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return FakeCatalog(self)
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from troveclient import Dbaas
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OLD_INIT = Dbaas.__init__
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def new_init(*args, **kwargs):
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kwargs['auth_strategy'] = FakeAuth
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OLD_INIT(*args, **kwargs)
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# Monkey patch init so it'll work with fake auth.
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Dbaas.__init__ = new_init
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client = Dbaas("jsmith", "abcdef", tenant="12345",
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auth_url=AUTH_URL)
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client.authenticate()
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# Delete all instances.
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instances = [1]
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while len(instances) > 0:
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instances = client.instances.list()
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for instance in instances:
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try:
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instance.delete()
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except:
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pass
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flavor_id = "1"
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for i in range(30):
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name = "Instance #%d" % i
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client.instances.create(name, flavor_id, None)
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Authentication
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--------------
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Authenticating is necessary to use every feature of the client (except to
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discover available versions).
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Authenticating is necessary to use every feature of the client.
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To create the client, create an instance of the Dbaas (Database as a Service)
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class. The auth url, auth user, key, and tenant ID must be specified in the
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To create the client, create an instance of the Client class.
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The auth url, username, password, and project name must be specified in the
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call to the constructor.
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.. testcode::
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from troveclient import Dbaas
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global AUTH_URL
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client = Dbaas("jsmith", "abcdef", tenant="12345",
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auth_url=AUTH_URL)
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client.authenticate()
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from troveclient.v1 import client
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tc = client.Client(username="testuser",
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password="PASSWORD",
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project_id="test_project",
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region_name="EAST",
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auth_url="http://api-server:5000/v2.0")
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The default authentication strategy assumes a Keystone compliant auth system.
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Versions
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--------
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You can discover the available versions by querying the versions property as
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follows:
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Once you have an authenticated client object you can make calls with it,
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for example:
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.. testcode::
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versions = client.versions.index("http://localhost:8779")
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The "index" method returns a list of Version objects which have the ID as well
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as a list of links, each with a URL to use to reach that particular version.
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.. testcode::
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for version in versions:
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print(version.id)
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for link in version.links:
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if link['rel'] == 'self':
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print(" %s" % link['href'])
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.. testoutput::
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v1.0
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http://localhost:8779/v1.0/
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flavors = tc.flavors.list()
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datastores = tc.datastores.list()
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Instances
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---------
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@ -114,17 +36,26 @@ The following example creates a 512 MB instance with a 1 GB volume:
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.. testcode::
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client.authenticate()
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flavor_id = "1"
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from troveclient.v1 import client
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tc = client.Client(username="testuser",
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password="PASSWORD",
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project_id="test_project",
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region_name="EAST",
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auth_url="http://api-server:5000/v2.0")
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flavor_id = '1'
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volume = {'size':1}
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databases = [{"name": "my_db",
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"character_set": "latin2", # These two fields
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"collate": "latin2_general_ci"}] # are optional.
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datastore = 'mysql'
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datastore_version = '5.6-104'
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users = [{"name": "jsmith", "password": "12345",
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"databases": [{"name": "my_db"}]
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}]
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instance = client.instances.create("My Instance", flavor_id, volume,
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databases, users)
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databases, users, datastore=datastore,
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datastore_version=datastore_version)
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To retrieve the instance, use the "get" method of "instances":
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@ -167,16 +98,9 @@ or by using the delete method on "instances."
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Ready in an ACTIVE state.
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Listing instances and Pagination
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Listing Items and Pagination
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--------------------------------
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To list all instances, use the list method of "instances":
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.. testcode::
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instances = client.instances.list()
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Lists paginate after twenty items, meaning you'll only get twenty items back
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even if there are more. To see the next set of items, send a marker. The marker
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is a key value (in the case of instances, the ID) which is the non-inclusive
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@ -187,6 +111,9 @@ can be used as the "marker" argument to get the next section of the list
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back from the server. If no more items are available, then the next property
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is None.
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Pagination applies to all listed objects, like instances, datastores, etc.
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The example below is for instances.
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.. testcode::
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# There are currently 30 instances.
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