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# Copyright (c) 2016 Canonical Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import functools
import os
import urllib
import requests
import requests_unixsocket
from pylxd.container import Container
from pylxd.image import Image
from pylxd.operation import Operation
from pylxd.profile import Profile
requests_unixsocket.monkeypatch()
class _APINode(object):
"""An api node object.
This class allows us to dynamically create request urls by expressing them
in python. For example:
>>> node = _APINode('http://example.com/api')
>>> node.users[1].comments.get()
...would make an HTTP GET request on
http://example.com/api/users/1/comments
"""
def __init__(self, api_endpoint):
self._api_endpoint = api_endpoint
def __getattr__(self, name):
return self.__class__('{}/{}'.format(self._api_endpoint, name))
def __getitem__(self, item):
return self.__class__('{}/{}'.format(self._api_endpoint, item))
@property
def session(self):
if self._api_endpoint.startswith('http+unix://'):
return requests_unixsocket.Session()
else:
return requests
def get(self, *args, **kwargs):
"""Perform an HTTP GET."""
return self.session.get(self._api_endpoint, *args, **kwargs)
def post(self, *args, **kwargs):
"""Perform an HTTP POST."""
return self.session.post(self._api_endpoint, *args, **kwargs)
def put(self, *args, **kwargs):
"""Perform an HTTP PUT."""
return self.session.put(self._api_endpoint, *args, **kwargs)
def delete(self, *args, **kwargs):
"""Perform an HTTP delete."""
return self.session.delete(self._api_endpoint, *args, **kwargs)
class Client(object):
"""A LXD client.
This client wraps all the functionality required to interact with
LXD, and is meant to be the sole entry point.
"""
class Containers(object):
"""A convenience wrapper for Container."""
def __init__(self, client):
self.get = functools.partial(Container.get, client)
self.all = functools.partial(Container.all, client)
self.create = functools.partial(Container.create, client)
class Images(object):
"""A convenience wrapper for Image."""
def __init__(self, client):
self.get = functools.partial(Image.get, client)
self.all = functools.partial(Image.all, client)
self.create = functools.partial(Image.create, client)
class Operations(object):
"""A convenience wrapper for Operation."""
def __init__(self, client):
self.get = functools.partial(Operation.get, client)
class Profiles(object):
"""A convenience wrapper for Profile."""
def __init__(self, client):
self.get = functools.partial(Profile.get, client)
self.all = functools.partial(Profile.all, client)
self.create = functools.partial(Profile.create, client)
def __init__(self, endpoint=None, version='1.0'):
if endpoint is not None:
self.api = _APINode(endpoint)
else:
if 'LXD_DIR' in os.environ:
path = os.path.join(
os.environ.get['LXD_DIR'], 'unix.socket')
else:
path = '/var/lib/lxd/unix.socket'
self.api = _APINode('http+unix://{}'.format(
urllib.quote(path, safe='')))
self.api = self.api[version]
self.containers = self.Containers(self)
self.images = self.Images(self)
self.operations = self.Operations(self)
self.profiles = self.Profiles(self)
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