forked from klmitch/nova_limits
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test_keystone_limits.py
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test_keystone_limits.py
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# Copyright 2012 SUSE Linux Products Gmbh
# Copyright 2012 Rackspace
# 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 json
import time
import unittest
import msgpack
import stubout
from turnstile import config
from turnstile import limits
from keystone.token.backends.kvs import Token
import keystone_limits
class FakeDatabase(object):
def __init__(self, fake_db=None):
self.fake_db = fake_db or {}
self.actions = []
def keys(self, pattern):
self.actions.append(('keys', pattern))
def get(self, key):
self.actions.append(('get', key))
return self.fake_db.get(key)
def set(self, key, value):
self.actions.append(('set', key, value))
self.fake_db[key] = value
def delete(self, key):
self.actions.append(('delete', key))
if key in self.fake_db:
del self.fake_db[key]
class FakeMiddleware(object):
def __init__(self, db, limits):
self.db = db
self.limits = limits
class FakeObject(object):
def __init__(self, *args, **kwargs):
self._args = args
self.__dict__.update(kwargs)
class FakeLimit(FakeObject):
def decode(self, key):
_pre, sep, params = key.partition('/')
if sep != '/':
return {}
return json.loads(params)
class TestPreprocess(unittest.TestCase):
def setUp(self):
self.stubs = stubout.StubOutForTesting()
self.stubs.Set(time, 'time', lambda: 1000000000)
self.stubs.Set(msgpack, 'loads', lambda x: x)
def tearDown(self):
self.stubs.UnsetAll()
def test_no_headers(self):
db = FakeDatabase()
midware = FakeMiddleware(db, [])
environ = { 'REMOTE_ADDR': '127.0.0.1',
'PATH_INFO': '/foo'}
keystone_limits.keystone_preprocess(midware, environ)
self.assertEqual(environ, {
'REMOTE_ADDR': '127.0.0.1',
'PATH_INFO': '/foo'})
def test_x_auth_token(self):
db = FakeDatabase()
midware = FakeMiddleware(db, [])
environ = { 'REMOTE_ADDR': '127.0.0.1',
'PATH_INFO': '/foo',
'HTTP_X_AUTH_TOKEN': '12345'}
keystone_limits.keystone_preprocess(midware, environ)
self.assertEqual(environ, {
'REMOTE_ADDR': '127.0.0.1',
'PATH_INFO': '/foo',
'HTTP_X_AUTH_TOKEN': '12345',
'keystone.auth_request': True})
def test_x_storage_token(self):
db = FakeDatabase()
midware = FakeMiddleware(db, [])
environ = { 'REMOTE_ADDR': '127.0.0.1',
'PATH_INFO': '/foo',
'HTTP_X_STORAGE_TOKEN': '12345'}
keystone_limits.keystone_preprocess(midware, environ)
self.assertEqual(environ, {
'REMOTE_ADDR': '127.0.0.1',
'PATH_INFO': '/foo',
'HTTP_X_STORAGE_TOKEN': '12345',
'keystone.auth_request': True})
def test_tokens_get_doesnt_require_auth(self):
db = FakeDatabase()
midware = FakeMiddleware(db, [])
environ = { 'REMOTE_ADDR': '127.0.0.1',
'PATH_INFO': '/tokens',
'REQUEST_METHOD': 'GET'}
keystone_limits.keystone_preprocess(midware, environ)
self.assertEqual(environ, {
'REMOTE_ADDR': '127.0.0.1',
'PATH_INFO': '/tokens',
'REQUEST_METHOD': 'GET'})
def test_tokens_post_other_urls_doesnt_require_auth(self):
db = FakeDatabase()
midware = FakeMiddleware(db, [])
environ = { 'REMOTE_ADDR': '127.0.0.1',
'PATH_INFO': '/foo',
'REQUEST_METHOD': 'POST'}
keystone_limits.keystone_preprocess(midware, environ)
self.assertEqual(environ, {
'REMOTE_ADDR': '127.0.0.1',
'PATH_INFO': '/foo',
'REQUEST_METHOD': 'POST'})
def test_tokens_post_require_auth(self):
db = FakeDatabase()
midware = FakeMiddleware(db, [])
environ = { 'REMOTE_ADDR': '127.0.0.1',
'PATH_INFO': '/tokens',
'REQUEST_METHOD': 'POST'}
keystone_limits.keystone_preprocess(midware, environ)
self.assertEqual(environ, {
'REMOTE_ADDR': '127.0.0.1',
'PATH_INFO': '/tokens',
'REQUEST_METHOD': 'POST',
'keystone.auth_request': True})
class TestKeystoneClassLimit(unittest.TestCase):
def setUp(self):
self.lim = keystone_limits.KeystoneClassLimit('db', uri='/spam',
rate_class='default',
value=18,
unit='second')
def test_route_base(self):
route_args = {}
result = self.lim.route('/spam', route_args)
self.assertEqual(result, '/spam')
def test_route_v1(self):
route_args = {}
result = self.lim.route('/v1.1/spam', route_args)
self.assertEqual(result, '/spam')
def test_route_v2(self):
route_args = {}
result = self.lim.route('/v2/spam', route_args)
self.assertEqual(result, '/spam')
def test_route_v1_base(self):
route_args = {}
result = self.lim.route('/v1.1', route_args)
self.assertEqual(result, '/v1.1')
def test_route_v2_base(self):
route_args = {}
result = self.lim.route('/v2', route_args)
self.assertEqual(result, '/v2')
def test_filter(self):
environ = { 'HTTP_X_REMOTE_ADDR': '127.0.0.1',
'keystone.auth_request': True}
params = {}
unused = {}
self.lim.filter(environ, params, unused)
self.assertEqual(environ, { 'HTTP_X_REMOTE_ADDR': '127.0.0.1',
'keystone.auth_request': True })
self.assertEqual(params, dict(original_addr='127.0.0.1'))
self.assertEqual(unused, {})
def test_filter_defer(self):
environ = params = unused = {}
self.assertRaises(limits.DeferLimit,
self.lim.filter, environ, params, unused)
class StubKeystoneTurnstileMiddleware(keystone_limits.KeystoneTurnstileMiddleware):
def __init__(self):
pass
class TestKeystoneTurnstileMiddleware(unittest.TestCase):
def setUp(self):
self.midware = StubKeystoneTurnstileMiddleware()
self.stubs = stubout.StubOutForTesting()
def fake_over_limit_fault(msg, err, retry):
def inner(environ, start_response):
return (msg, err, retry, environ, start_response)
return inner
self.stubs.Set(keystone_limits, 'OverLimitFault', fake_over_limit_fault)
self.stubs.Set(time, 'time', lambda: 1000000000)
def tearDown(self):
self.stubs.UnsetAll()
def test_format_delay(self):
lim = FakeObject(value=23, uri='/spam', unit='second')
environ = dict(REQUEST_METHOD='SPAM')
start_response = lambda: None
result = self.midware.format_delay(18, lim, None,
environ, start_response)
self.assertEqual(result[0], 'This request was rate-limited.')
self.assertEqual(result[1],
'Only 23 SPAM request(s) can be made to /spam '
'every SECOND.')
self.assertEqual(result[2], 1000000018)
self.assertEqual(id(result[3]), id(environ))
self.assertEqual(id(result[4]), id(start_response))