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authorVipul Sabhaya <vipuls@gmail.com>2014-03-25 13:38:12 -0700
committerVipul Sabhaya <vipuls@gmail.com>2014-03-25 13:38:12 -0700
commit77c8f5020eb1c22540c88ecc05e0358d80aada0b (patch)
tree67cab2f41a831cc549dc8db7511107aa973b3fab /doc/source/usage.rst
parent3fbb0074d1defa2336ea9934d6785342f5bb6519 (diff)
downloadpython-troveclient-77c8f5020eb1c22540c88ecc05e0358d80aada0b.tar.gz
Fix build_sphinx setup target
Change-Id: I070e5d6eaa31be360608a4d03598ccabc0dce602 Closes-Bug: #1297496
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+Using the Client Programmatically
+=================================
+
+
+.. testsetup::
+
+ # Creates some vars we don't show in the docs.
+ AUTH_URL="http://localhost:8779/v1.0/auth"
+
+ from troveclient import Dbaas
+ from troveclient import auth
+ class FakeAuth(auth.Authenticator):
+
+ def authenticate(self):
+ class FakeCatalog(object):
+ def __init__(self, auth):
+ self.auth = auth
+
+ def get_public_url(self):
+ return "%s/%s" % ('http://localhost:8779/v1.0',
+ self.auth.tenant)
+
+ def get_token(self):
+ return self.auth.tenant
+
+ return FakeCatalog(self)
+
+ from troveclient import Dbaas
+ OLD_INIT = Dbaas.__init__
+ def new_init(*args, **kwargs):
+ kwargs['auth_strategy'] = FakeAuth
+ OLD_INIT(*args, **kwargs)
+
+ # Monkey patch init so it'll work with fake auth.
+ Dbaas.__init__ = new_init
+
+
+ client = Dbaas("jsmith", "abcdef", tenant="12345",
+ auth_url=AUTH_URL)
+ client.authenticate()
+
+ # Delete all instances.
+ instances = [1]
+ while len(instances) > 0:
+ instances = client.instances.list()
+ for instance in instances:
+ try:
+ instance.delete()
+ except:
+ pass
+
+ flavor_id = "1"
+ for i in range(30):
+ name = "Instance #%d" % i
+ client.instances.create(name, flavor_id, None)
+
+
+
+Authentication
+--------------
+
+Authenticating is necessary to use every feature of the client (except to
+discover available versions).
+
+To create the client, create an instance of the Dbaas (Database as a Service)
+class. The auth url, auth user, key, and tenant ID must be specified in the
+call to the constructor.
+
+.. testcode::
+
+ from troveclient import Dbaas
+ global AUTH_URL
+
+ client = Dbaas("jsmith", "abcdef", tenant="12345",
+ auth_url=AUTH_URL)
+ client.authenticate()
+
+The default authentication strategy assumes a Keystone complaint auth system.
+For Rackspace auth, use the keyword argument "auth_strategy='rax'".
+
+
+Versions
+--------
+
+You can discover the available versions by querying the versions property as
+follows:
+
+
+.. testcode::
+
+ versions = client.versions.index("http://localhost:8779")
+
+
+The "index" method returns a list of Version objects which have the ID as well
+as a list of links, each with a URL to use to reach that particular version.
+
+.. testcode::
+
+ for version in versions:
+ print(version.id)
+ for link in version.links:
+ if link['rel'] == 'self':
+ print(" %s" % link['href'])
+
+.. testoutput::
+
+ v1.0
+ http://localhost:8779/v1.0/
+
+
+Instances
+---------
+
+The following example creates a 512 MB instance with a 1 GB volume:
+
+.. testcode::
+
+ client.authenticate()
+ flavor_id = "1"
+ volume = {'size':1}
+ databases = [{"name": "my_db",
+ "character_set": "latin2", # This and the next field are
+ "collate": "latin2_general_ci"}] # optional.
+ users = [{"name": "jsmith", "password": "12345",
+ "databases": [{"name": "my_db"}]
+ }]
+ instance = client.instances.create("My Instance", flavor_id, volume,
+ databases, users)
+
+To retrieve the instance, use the "get" method of "instances":
+
+.. testcode::
+
+ updated_instance = client.instances.get(instance.id)
+ print(updated_instance.name)
+ print(" Status=%s Flavor=%s" %
+ (updated_instance.status, updated_instance.flavor['id']))
+
+.. testoutput::
+
+ My Instance
+ Status=BUILD Flavor=1
+
+You can delete an instance by calling "delete" on the instance object itself,
+or by using the delete method on "instances."
+
+.. testcode::
+
+ # Wait for the instance to be ready before we delete it.
+ import time
+ from troveclient.exceptions import NotFound
+
+ while instance.status == "BUILD":
+ instance.get()
+ time.sleep(1)
+ print("Ready in an %s state." % instance.status)
+ instance.delete()
+ # Delete and wait for the instance to go away.
+ while True:
+ try:
+ instance = client.instances.get(instance.id)
+ assert instance.status == "SHUTDOWN"
+ except NotFound:
+ break
+
+.. testoutput::
+
+ Ready in an ACTIVE state.
+
+
+Listing instances and Pagination
+--------------------------------
+
+To list all instances, use the list method of "instances":
+
+.. testcode::
+
+ instances = client.instances.list()
+
+
+Lists paginate after twenty items, meaning you'll only get twenty items back
+even if there are more. To see the next set of items, send a marker. The marker
+is a key value (in the case of instances, the ID) which is the non-inclusive
+starting point for all returned items.
+
+The lists returned by the client always include a "next" property. This
+can be used as the "marker" argument to get the next section of the list
+back from the server. If no more items are available, then the next property
+is None.
+
+.. testcode::
+
+ # There are currently 30 instances.
+
+ instances = client.instances.list()
+ print(len(instances))
+ print(instances.next is None)
+
+ instances2 = client.instances.list(marker=instances.next)
+ print(len(instances2))
+ print(instances2.next is None)
+
+.. testoutput::
+
+ 20
+ False
+ 10
+ True
+