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# Copyright 2010-2011 OpenStack Foundation
# 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.
from unittest import mock
import requests
import glance_store
from glance_store._drivers import http
from glance_store import exceptions
from glance_store import location
from glance_store.tests import base
from glance_store.tests.unit import test_store_capabilities
from glance_store.tests import utils
class TestHttpStore(base.StoreBaseTest,
test_store_capabilities.TestStoreCapabilitiesChecking):
def setUp(self):
super(TestHttpStore, self).setUp()
self.config(default_store='http', group='glance_store')
http.Store.READ_CHUNKSIZE = 2
self.store = http.Store(self.conf)
self.register_store_schemes(self.store, 'http')
def _mock_requests(self):
"""Mock requests session object.
Should be called when we need to mock request/response objects.
"""
request = mock.patch('requests.Session.request')
self.request = request.start()
self.addCleanup(request.stop)
def test_http_get(self):
self._mock_requests()
self.request.return_value = utils.fake_response()
uri = "http://netloc/path/to/file.tar.gz"
expected_returns = ['I ', 'am', ' a', ' t', 'ea', 'po', 't,', ' s',
'ho', 'rt', ' a', 'nd', ' s', 'to', 'ut', '\n']
loc = location.get_location_from_uri(uri, conf=self.conf)
(image_file, image_size) = self.store.get(loc)
self.assertEqual(31, image_size)
chunks = [c for c in image_file]
self.assertEqual(expected_returns, chunks)
def test_http_partial_get(self):
uri = "http://netloc/path/to/file.tar.gz"
loc = location.get_location_from_uri(uri, conf=self.conf)
self.assertRaises(exceptions.StoreRandomGetNotSupported,
self.store.get, loc, chunk_size=1)
def test_http_get_redirect(self):
# Add two layers of redirects to the response stack, which will
# return the default 200 OK with the expected data after resolving
# both redirects.
self._mock_requests()
redirect1 = {"location": "http://example.com/teapot.img"}
redirect2 = {"location": "http://example.com/teapot_real.img"}
responses = [utils.fake_response(),
utils.fake_response(status_code=301, headers=redirect2),
utils.fake_response(status_code=302, headers=redirect1)]
def getresponse(*args, **kwargs):
return responses.pop()
self.request.side_effect = getresponse
uri = "http://netloc/path/to/file.tar.gz"
expected_returns = ['I ', 'am', ' a', ' t', 'ea', 'po', 't,', ' s',
'ho', 'rt', ' a', 'nd', ' s', 'to', 'ut', '\n']
loc = location.get_location_from_uri(uri, conf=self.conf)
(image_file, image_size) = self.store.get(loc)
self.assertEqual(0, len(responses))
self.assertEqual(31, image_size)
chunks = [c for c in image_file]
self.assertEqual(expected_returns, chunks)
def test_http_get_max_redirects(self):
self._mock_requests()
redirect = {"location": "http://example.com/teapot.img"}
responses = ([utils.fake_response(status_code=302, headers=redirect)]
* (http.MAX_REDIRECTS + 2))
def getresponse(*args, **kwargs):
return responses.pop()
self.request.side_effect = getresponse
uri = "http://netloc/path/to/file.tar.gz"
loc = location.get_location_from_uri(uri, conf=self.conf)
self.assertRaises(exceptions.MaxRedirectsExceeded, self.store.get, loc)
def test_http_get_redirect_invalid(self):
self._mock_requests()
redirect = {"location": "http://example.com/teapot.img"}
redirect_resp = utils.fake_response(status_code=307, headers=redirect)
self.request.return_value = redirect_resp
uri = "http://netloc/path/to/file.tar.gz"
loc = location.get_location_from_uri(uri, conf=self.conf)
self.assertRaises(exceptions.BadStoreUri, self.store.get, loc)
def test_http_get_not_found(self):
self._mock_requests()
fake = utils.fake_response(status_code=404, content="404 Not Found")
self.request.return_value = fake
uri = "http://netloc/path/to/file.tar.gz"
loc = location.get_location_from_uri(uri, conf=self.conf)
self.assertRaises(exceptions.NotFound, self.store.get, loc)
def test_http_delete_raise_error(self):
self._mock_requests()
self.request.return_value = utils.fake_response()
uri = "https://netloc/path/to/file.tar.gz"
loc = location.get_location_from_uri(uri, conf=self.conf)
self.assertRaises(exceptions.StoreDeleteNotSupported,
self.store.delete, loc)
self.assertRaises(exceptions.StoreDeleteNotSupported,
glance_store.delete_from_backend, uri, {})
def test_http_add_raise_error(self):
self.assertRaises(exceptions.StoreAddDisabled,
self.store.add, None, None, None, None)
self.assertRaises(exceptions.StoreAddDisabled,
glance_store.add_to_backend, None, None,
None, None, 'http')
def test_http_get_size_with_non_existent_image_raises_Not_Found(self):
self._mock_requests()
self.request.return_value = utils.fake_response(
status_code=404, content='404 Not Found')
uri = "http://netloc/path/to/file.tar.gz"
loc = location.get_location_from_uri(uri, conf=self.conf)
self.assertRaises(exceptions.NotFound, self.store.get_size, loc)
self.request.assert_called_once_with('HEAD', uri, stream=True,
allow_redirects=False)
def test_http_get_size_bad_status_line(self):
self._mock_requests()
# Note(sabari): Low-level httplib.BadStatusLine will be raised as
# ConnectionErorr after migrating to requests.
self.request.side_effect = requests.exceptions.ConnectionError
uri = "http://netloc/path/to/file.tar.gz"
loc = location.get_location_from_uri(uri, conf=self.conf)
self.assertRaises(exceptions.BadStoreUri, self.store.get_size, loc)
def test_http_store_location_initialization(self):
"""Test store location initialization from valid uris"""
uris = [
"http://127.0.0.1:8000/ubuntu.iso",
"http://openstack.com:80/ubuntu.iso",
"http://[1080::8:800:200C:417A]:80/ubuntu.iso"
]
for uri in uris:
location.get_location_from_uri(uri)
def test_http_store_location_initialization_with_invalid_url(self):
"""Test store location initialization from incorrect uris."""
incorrect_uris = [
"http://127.0.0.1:~/ubuntu.iso",
"http://openstack.com:some_text/ubuntu.iso",
"http://[1080::8:800:200C:417A]:some_text/ubuntu.iso"
]
for uri in incorrect_uris:
self.assertRaises(exceptions.BadStoreUri,
location.get_location_from_uri, uri)
def test_http_get_raises_remote_service_unavailable(self):
"""Test http store raises RemoteServiceUnavailable."""
uri = "http://netloc/path/to/file.tar.gz"
loc = location.get_location_from_uri(uri, conf=self.conf)
self.assertRaises(exceptions.RemoteServiceUnavailable,
self.store.get, loc)
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