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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
# 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 boto
from boto.ec2 import regioninfo
import httplib
import random
import StringIO
from tornado import httpserver
from twisted.internet import defer
from nova import flags
from nova import test
from nova.auth import users
from nova.endpoint import api
from nova.endpoint import cloud
FLAGS = flags.FLAGS
# NOTE(termie): These are a bunch of helper methods and classes to short
# circuit boto calls and feed them into our tornado handlers,
# it's pretty damn circuitous so apologies if you have to fix
# a bug in it
def boto_to_tornado(method, path, headers, data, host, connection=None):
""" translate boto requests into tornado requests
connection should be a FakeTornadoHttpConnection instance
"""
headers = httpserver.HTTPHeaders()
for k, v in headers.iteritems():
headers[k] = v
req = httpserver.HTTPRequest(method=method,
uri=path,
headers=headers,
body=data,
host=host,
remote_ip='127.0.0.1',
connection=connection)
return req
def raw_to_httpresponse(s):
""" translate a raw tornado http response into an httplib.HTTPResponse """
sock = FakeHttplibSocket(s)
resp = httplib.HTTPResponse(sock)
resp.begin()
return resp
class FakeHttplibSocket(object):
""" a fake socket implementation for httplib.HTTPResponse, trivial """
def __init__(self, s):
self.fp = StringIO.StringIO(s)
def makefile(self, mode, other):
return self.fp
class FakeTornadoStream(object):
""" a fake stream to satisfy tornado's assumptions, trivial """
def set_close_callback(self, f):
pass
class FakeTornadoConnection(object):
""" a fake connection object for tornado to pass to its handlers
web requests are expected to write to this as they get data and call
finish when they are done with the request, we buffer the writes and
kick off a callback when it is done so that we can feed the result back
into boto.
"""
def __init__(self, d):
self.d = d
self._buffer = StringIO.StringIO()
def write(self, chunk):
self._buffer.write(chunk)
def finish(self):
s = self._buffer.getvalue()
self.d.callback(s)
xheaders = None
@property
def stream(self):
return FakeTornadoStream()
class FakeHttplibConnection(object):
""" a fake httplib.HTTPConnection for boto to use
requests made via this connection actually get translated and routed into
our tornado app, we then wait for the response and turn it back into
the httplib.HTTPResponse that boto expects.
"""
def __init__(self, app, host, is_secure=False):
self.app = app
self.host = host
self.deferred = defer.Deferred()
def request(self, method, path, data, headers):
req = boto_to_tornado
conn = FakeTornadoConnection(self.deferred)
request = boto_to_tornado(connection=conn,
method=method,
path=path,
headers=headers,
data=data,
host=self.host)
handler = self.app(request)
self.deferred.addCallback(raw_to_httpresponse)
def getresponse(self):
@defer.inlineCallbacks
def _waiter():
result = yield self.deferred
defer.returnValue(result)
d = _waiter()
# NOTE(termie): defer.returnValue above should ensure that
# this deferred has already been called by the time
# we get here, we are going to cheat and return
# the result of the callback
return d.result
def close(self):
pass
class ApiEc2TestCase(test.BaseTestCase):
def setUp(self):
super(ApiEc2TestCase, self).setUp()
self.users = users.UserManager.instance()
self.cloud = cloud.CloudController()
self.host = '127.0.0.1'
self.app = api.APIServerApplication({'Cloud': self.cloud})
self.ec2 = boto.connect_ec2(
aws_access_key_id='fake',
aws_secret_access_key='fake',
is_secure=False,
region=regioninfo.RegionInfo(None, 'test', self.host),
port=FLAGS.cc_port,
path='/services/Cloud')
self.mox.StubOutWithMock(self.ec2, 'new_http_connection')
def expect_http(self, host=None, is_secure=False):
http = FakeHttplibConnection(
self.app, '%s:%d' % (self.host, FLAGS.cc_port), False)
self.ec2.new_http_connection(host, is_secure).AndReturn(http)
return http
def test_describe_instances(self):
self.expect_http()
self.mox.ReplayAll()
try:
self.users.create_user('fake', 'fake', 'fake')
except Exception, _err:
pass # User may already exist
self.assertEqual(self.ec2.get_all_instances(), [])
self.users.delete_user('fake')
def test_get_all_key_pairs(self):
self.expect_http()
self.mox.ReplayAll()
keyname = "".join(random.choice("sdiuisudfsdcnpaqwertasd") for x in range(random.randint(4, 8)))
try:
self.users.create_user('fake', 'fake', 'fake')
except Exception, _err:
pass # User may already exist
self.users.generate_key_pair('fake', keyname)
rv = self.ec2.get_all_key_pairs()
self.assertTrue(filter(lambda k: k.name == keyname, rv))
self.users.delete_user('fake')
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