Remove Not used Classes/Methods from apiclient.base
After removal of apiclient from oslo-incubator, it was copied to magnumclient repo with following patch: https://review.openstack.org/#/c/280050 Most of the Classes/Methods from apiclient.base are not used, so with this patch they are removed. Change-Id: I1779a11f00e8652620e3c41a46ddefd4344d404a Closes-Bug: #1644167
This commit is contained in:
yatin
parent
c108621d2f
commit
9ebb52f769
@ -20,422 +20,8 @@
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Base utilities to build API operation managers and objects on top of.
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"""
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########################################################################
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#
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# THIS MODULE IS DEPRECATED
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#
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# Please refer to
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# https://etherpad.openstack.org/p/kilo-magnumclient-library-proposals for
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# the discussion leading to this deprecation.
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#
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# We recommend checking out the python-openstacksdk project
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# (https://launchpad.net/python-openstacksdk) instead.
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#
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########################################################################
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# E1102: %s is not callable
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# pylint: disable=E1102
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import abc
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import copy
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from oslo_utils import strutils
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import six
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from six.moves.urllib import parse
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from magnumclient.common.apiclient import exceptions
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from magnumclient.i18n import _
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def getid(obj):
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"""Return id if argument is a Resource.
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Abstracts the common pattern of allowing both an object or an object's ID
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(UUID) as a parameter when dealing with relationships.
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"""
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try:
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if obj.uuid:
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return obj.uuid
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except AttributeError:
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pass
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try:
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return obj.id
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except AttributeError:
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return obj
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# TODO(aababilov): call run_hooks() in HookableMixin's child classes
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class HookableMixin(object):
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"""Mixin so classes can register and run hooks."""
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_hooks_map = {}
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@classmethod
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def add_hook(cls, hook_type, hook_func):
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"""Add a new hook of specified type.
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:param cls: class that registers hooks
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:param hook_type: hook type, e.g., '__pre_parse_args__'
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:param hook_func: hook function
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"""
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if hook_type not in cls._hooks_map:
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cls._hooks_map[hook_type] = []
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cls._hooks_map[hook_type].append(hook_func)
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@classmethod
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def run_hooks(cls, hook_type, *args, **kwargs):
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"""Run all hooks of specified type.
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:param cls: class that registers hooks
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:param hook_type: hook type, e.g., '__pre_parse_args__'
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:param args: args to be passed to every hook function
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:param kwargs: kwargs to be passed to every hook function
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"""
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hook_funcs = cls._hooks_map.get(hook_type) or []
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for hook_func in hook_funcs:
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hook_func(*args, **kwargs)
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class BaseManager(HookableMixin):
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"""Basic manager type providing common operations.
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Managers interact with a particular type of API (servers, flavors, images,
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etc.) and provide CRUD operations for them.
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"""
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resource_class = None
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def __init__(self, client):
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"""Initializes BaseManager with `client`.
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:param client: instance of BaseClient descendant for HTTP requests
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"""
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super(BaseManager, self).__init__()
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self.client = client
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def _list(self, url, response_key=None, obj_class=None, json=None):
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"""List the collection.
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:param url: a partial URL, e.g., '/servers'
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:param response_key: the key to be looked up in response dictionary,
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e.g., 'servers'. If response_key is None - all response body
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will be used.
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:param obj_class: class for constructing the returned objects
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(self.resource_class will be used by default)
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:param json: data that will be encoded as JSON and passed in POST
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request (GET will be sent by default)
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"""
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if json:
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body = self.client.post(url, json=json).json()
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else:
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body = self.client.get(url).json()
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if obj_class is None:
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obj_class = self.resource_class
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data = body[response_key] if response_key is not None else body
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# NOTE(ja): keystone returns values as list as {'values': [ ... ]}
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# unlike other services which just return the list...
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try:
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data = data['values']
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except (KeyError, TypeError):
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pass
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return [obj_class(self, res, loaded=True) for res in data if res]
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def _get(self, url, response_key=None):
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"""Get an object from collection.
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:param url: a partial URL, e.g., '/servers'
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:param response_key: the key to be looked up in response dictionary,
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e.g., 'server'. If response_key is None - all response body
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will be used.
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"""
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body = self.client.get(url).json()
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data = body[response_key] if response_key is not None else body
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return self.resource_class(self, data, loaded=True)
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def _head(self, url):
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"""Retrieve request headers for an object.
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:param url: a partial URL, e.g., '/servers'
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"""
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resp = self.client.head(url)
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return resp.status_code == 204
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def _post(self, url, json, response_key=None, return_raw=False):
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"""Create an object.
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:param url: a partial URL, e.g., '/servers'
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:param json: data that will be encoded as JSON and passed in POST
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request (GET will be sent by default)
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:param response_key: the key to be looked up in response dictionary,
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e.g., 'server'. If response_key is None - all response body
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will be used.
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:param return_raw: flag to force returning raw JSON instead of
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Python object of self.resource_class
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"""
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body = self.client.post(url, json=json).json()
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data = body[response_key] if response_key is not None else body
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if return_raw:
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return data
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return self.resource_class(self, data)
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def _put(self, url, json=None, response_key=None):
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"""Update an object with PUT method.
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:param url: a partial URL, e.g., '/servers'
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:param json: data that will be encoded as JSON and passed in POST
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request (GET will be sent by default)
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:param response_key: the key to be looked up in response dictionary,
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e.g., 'servers'. If response_key is None - all response body
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will be used.
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"""
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resp = self.client.put(url, json=json)
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# PUT requests may not return a body
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if resp.content:
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body = resp.json()
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if response_key is not None:
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return self.resource_class(self, body[response_key])
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else:
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return self.resource_class(self, body)
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def _patch(self, url, json=None, response_key=None):
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"""Update an object with PATCH method.
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:param url: a partial URL, e.g., '/servers'
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:param json: data that will be encoded as JSON and passed in POST
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request (GET will be sent by default)
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:param response_key: the key to be looked up in response dictionary,
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e.g., 'servers'. If response_key is None - all response body
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will be used.
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"""
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body = self.client.patch(url, json=json).json()
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if response_key is not None:
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return self.resource_class(self, body[response_key])
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else:
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return self.resource_class(self, body)
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def _delete(self, url):
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"""Delete an object.
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:param url: a partial URL, e.g., '/servers/my-server'
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"""
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return self.client.delete(url)
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@six.add_metaclass(abc.ABCMeta)
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class ManagerWithFind(BaseManager):
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"""Manager with additional `find()`/`findall()` methods."""
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@abc.abstractmethod
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def list(self):
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pass
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def find(self, **kwargs):
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"""Find a single item with attributes matching ``**kwargs``.
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This isn't very efficient: it loads the entire list then filters on
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the Python side.
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"""
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matches = self.findall(**kwargs)
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num_matches = len(matches)
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if num_matches == 0:
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msg = _("No %(name)s matching %(args)s.") % {
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'name': self.resource_class.__name__,
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'args': kwargs
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}
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raise exceptions.NotFound(msg)
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elif num_matches > 1:
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raise exceptions.NoUniqueMatch()
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else:
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return matches[0]
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def findall(self, **kwargs):
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"""Find all items with attributes matching ``**kwargs``.
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This isn't very efficient: it loads the entire list then filters on
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the Python side.
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"""
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found = []
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searches = kwargs.items()
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for obj in self.list():
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try:
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if all(getattr(obj, attr) == value
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for (attr, value) in searches):
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found.append(obj)
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except AttributeError:
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continue
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return found
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class CrudManager(BaseManager):
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"""Base manager class for manipulating entities.
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Children of this class are expected to define a `collection_key` and `key`.
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- `collection_key`: Usually a plural noun by convention (e.g. `entities`);
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used to refer collections in both URL's (e.g. `/v3/entities`) and JSON
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objects containing a list of member resources (e.g. `{'entities': [{},
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{}, {}]}`).
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- `key`: Usually a singular noun by convention (e.g. `entity`); used to
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refer to an individual member of the collection.
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"""
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collection_key = None
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key = None
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def build_url(self, base_url=None, **kwargs):
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"""Builds a resource URL for the given kwargs.
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Given an example collection where `collection_key = 'entities'` and
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`key = 'entity'`, the following URL's could be generated.
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By default, the URL will represent a collection of entities, e.g.::
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/entities
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If kwargs contains an `entity_id`, then the URL will represent a
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specific member, e.g.::
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/entities/{entity_id}
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:param base_url: if provided, the generated URL will be appended to it
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"""
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url = base_url if base_url is not None else ''
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url += '/%s' % self.collection_key
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# do we have a specific entity?
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entity_id = kwargs.get('%s_id' % self.key)
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if entity_id is not None:
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url += '/%s' % entity_id
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return url
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def _filter_kwargs(self, kwargs):
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"""Drop null values and handle ids."""
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for key, ref in kwargs.copy().items():
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if ref is None:
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kwargs.pop(key)
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else:
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if isinstance(ref, Resource):
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kwargs.pop(key)
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kwargs['%s_id' % key] = getid(ref)
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return kwargs
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def create(self, **kwargs):
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kwargs = self._filter_kwargs(kwargs)
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return self._post(
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self.build_url(**kwargs),
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{self.key: kwargs},
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self.key)
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def get(self, **kwargs):
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kwargs = self._filter_kwargs(kwargs)
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return self._get(
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self.build_url(**kwargs),
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self.key)
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def head(self, **kwargs):
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kwargs = self._filter_kwargs(kwargs)
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return self._head(self.build_url(**kwargs))
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def list(self, base_url=None, **kwargs):
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"""List the collection.
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:param base_url: if provided, the generated URL will be appended to it
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"""
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kwargs = self._filter_kwargs(kwargs)
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return self._list(
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'%(base_url)s%(query)s' % {
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'base_url': self.build_url(base_url=base_url, **kwargs),
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'query': '?%s' % parse.urlencode(kwargs) if kwargs else '',
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},
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self.collection_key)
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def put(self, base_url=None, **kwargs):
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"""Update an element.
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:param base_url: if provided, the generated URL will be appended to it
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"""
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kwargs = self._filter_kwargs(kwargs)
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return self._put(self.build_url(base_url=base_url, **kwargs))
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def update(self, **kwargs):
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kwargs = self._filter_kwargs(kwargs)
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params = kwargs.copy()
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params.pop('%s_id' % self.key)
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return self._patch(
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self.build_url(**kwargs),
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{self.key: params},
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self.key)
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def delete(self, **kwargs):
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kwargs = self._filter_kwargs(kwargs)
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return self._delete(
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self.build_url(**kwargs))
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def find(self, base_url=None, **kwargs):
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"""Find a single item with attributes matching ``**kwargs``.
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:param base_url: if provided, the generated URL will be appended to it
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"""
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kwargs = self._filter_kwargs(kwargs)
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rl = self._list(
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'%(base_url)s%(query)s' % {
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'base_url': self.build_url(base_url=base_url, **kwargs),
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'query': '?%s' % parse.urlencode(kwargs) if kwargs else '',
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},
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self.collection_key)
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num = len(rl)
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if num == 0:
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msg = _("No %(name)s matching %(args)s.") % {
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'name': self.resource_class.__name__,
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'args': kwargs
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}
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raise exceptions.NotFound(msg)
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elif num > 1:
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raise exceptions.NoUniqueMatch
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else:
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return rl[0]
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class Extension(HookableMixin):
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"""Extension descriptor."""
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SUPPORTED_HOOKS = ('__pre_parse_args__', '__post_parse_args__')
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manager_class = None
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def __init__(self, name, module):
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super(Extension, self).__init__()
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self.name = name
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self.module = module
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self._parse_extension_module()
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def _parse_extension_module(self):
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self.manager_class = None
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for attr_name, attr_value in self.module.__dict__.items():
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if attr_name in self.SUPPORTED_HOOKS:
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self.add_hook(attr_name, attr_value)
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else:
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try:
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if issubclass(attr_value, BaseManager):
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self.manager_class = attr_value
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except TypeError:
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pass
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def __repr__(self):
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return "<Extension '%s'>" % self.name
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class Resource(object):
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"""Base class for OpenStack resources (tenant, user, etc.).
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@ -443,9 +29,6 @@ class Resource(object):
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This is pretty much just a bag for attributes.
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"""
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HUMAN_ID = False
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NAME_ATTR = 'name'
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def __init__(self, manager, info, loaded=False):
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"""Populate and bind to a manager.
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@ -465,15 +48,6 @@ class Resource(object):
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info = ", ".join("%s=%s" % (k, getattr(self, k)) for k in reprkeys)
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return "<%s %s>" % (self.__class__.__name__, info)
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@property
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def human_id(self):
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"""Human-readable ID which can be used for bash completion."""
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if self.HUMAN_ID:
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name = getattr(self, self.NAME_ATTR, None)
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if name is not None:
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return strutils.to_slug(name)
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return None
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def _add_details(self, info):
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for (k, v) in info.items():
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try:
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@ -93,11 +93,6 @@ class AuthSystemNotFound(AuthorizationFailure):
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self.auth_system = auth_system
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class NoUniqueMatch(ClientException):
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"""Multiple entities found instead of one."""
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pass
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class EndpointException(ClientException):
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"""Something is rotten in Service Catalog."""
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pass
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