OpenStack Storage (Swift) Client
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

584 lines
21 KiB

# Copyright (c) 2010-2012 OpenStack, LLC.
#
# 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 sys
from requests import RequestException
from requests.structures import CaseInsensitiveDict
from time import sleep
import unittest
import mock
import six
import os
from six.moves import reload_module
from six.moves.urllib.parse import urlparse, ParseResult
from swiftclient import client as c
from swiftclient import shell as s
from swiftclient.utils import EMPTY_ETAG
def fake_get_auth_keystone(expected_os_options=None, exc=None,
storage_url='http://url/', token='token',
**kwargs):
def fake_get_auth_keystone(auth_url,
user,
key,
actual_os_options, **actual_kwargs):
if exc:
raise exc('test')
# TODO: some way to require auth_url, user and key?
if expected_os_options:
for key, value in actual_os_options.items():
if value and value != expected_os_options.get(key):
return "", None
if 'required_kwargs' in kwargs:
for k, v in kwargs['required_kwargs'].items():
if v != actual_kwargs.get(k):
return "", None
if auth_url.startswith("https") and \
auth_url.endswith("invalid-certificate") and \
not actual_kwargs['insecure']:
from swiftclient import client as c
raise c.ClientException("invalid-certificate")
if auth_url.startswith("https") and \
auth_url.endswith("self-signed-certificate") and \
not actual_kwargs['insecure'] and \
actual_kwargs['cacert'] is None:
from swiftclient import client as c
raise c.ClientException("unverified-certificate")
if auth_url.startswith("https") and \
auth_url.endswith("client-certificate") and \
not (actual_kwargs['cert'] and actual_kwargs['cert_key']):
from swiftclient import client as c
raise c.ClientException("noclient-certificate")
return storage_url, token
return fake_get_auth_keystone
class StubResponse(object):
"""
Placeholder structure for use with fake_http_connect's code_iter to modify
response attributes (status, body, headers) on a per-request basis.
"""
def __init__(self, status=200, body='', headers=None):
self.status = status
self.body = body
self.headers = headers or {}
def __repr__(self):
return '%s(%r, %r, %r)' % (self.__class__.__name__, self.status,
self.body, self.headers)
def fake_http_connect(*code_iter, **kwargs):
"""
Generate a callable which yields a series of stubbed responses. Because
swiftclient will reuse an HTTP connection across pipelined requests it is
not always the case that this fake is used strictly for mocking an HTTP
connection, but rather each HTTP response (i.e. each call to requests
get_response).
"""
class FakeConn(object):
def __init__(self, status, etag=None, body='', timestamp='1',
headers=None):
self.status_code = self.status = status
self.reason = 'Fake'
self.scheme = 'http'
self.host = '1.2.3.4'
self.port = '1234'
self.sent = 0
self.received = 0
self.etag = etag
self.content = self.body = body
self.timestamp = timestamp
self.headers = headers or {}
self.request = None
self._closed = False
def getresponse(self):
if kwargs.get('raise_exc'):
raise Exception('test')
return self
def getheaders(self):
if self.headers:
return self.headers.items()
headers = {'content-length': str(len(self.body)),
'content-type': 'x-application/test',
'x-timestamp': self.timestamp,
'last-modified': self.timestamp,
'x-object-meta-test': 'testing',
'etag':
self.etag or '"%s"' % EMPTY_ETAG,
'x-works': 'yes',
'x-account-container-count': '12345'}
if not self.timestamp:
del headers['x-timestamp']
try:
if next(container_ts_iter) is False:
headers['x-container-timestamp'] = '1'
except StopIteration:
pass
if 'slow' in kwargs:
headers['content-length'] = '4'
if 'headers' in kwargs:
headers.update(kwargs['headers'])
if 'auth_v1' in kwargs:
headers.update(
{'x-storage-url': 'storageURL',
'x-auth-token': 'someauthtoken'})
return headers.items()
def read(self, amt=None):
if 'slow' in kwargs:
if self.sent < 4:
self.sent += 1
sleep(0.1)
return ' '
rv = self.body[:amt]
if amt is not None:
self.body = self.body[amt:]
else:
self.body = ''
return rv
def send(self, amt=None):
if 'slow' in kwargs:
if self.received < 4:
self.received += 1
sleep(0.1)
def getheader(self, name, default=None):
return dict(self.getheaders()).get(name.lower(), default)
def close(self):
self._closed = True
timestamps_iter = iter(kwargs.get('timestamps') or ['1'] * len(code_iter))
etag_iter = iter(kwargs.get('etags') or [None] * len(code_iter))
x = kwargs.get('missing_container', [False] * len(code_iter))
if not isinstance(x, (tuple, list)):
x = [x] * len(code_iter)
container_ts_iter = iter(x)
code_iter = iter(code_iter)
def connect(*args, **ckwargs):
if 'give_content_type' in kwargs:
if len(args) >= 7 and 'Content-Type' in args[6]:
kwargs['give_content_type'](args[6]['Content-Type'])
else:
kwargs['give_content_type']('')
if 'give_connect' in kwargs:
kwargs['give_connect'](*args, **ckwargs)
status = next(code_iter)
if isinstance(status, StubResponse):
fake_conn = FakeConn(status.status, body=status.body,
headers=status.headers)
else:
etag = next(etag_iter)
timestamp = next(timestamps_iter)
fake_conn = FakeConn(status, etag, body=kwargs.get('body', ''),
timestamp=timestamp)
if fake_conn.status <= 0:
raise RequestException()
return fake_conn
connect.code_iter = code_iter
return connect
class MockHttpTest(unittest.TestCase):
def setUp(self):
super(MockHttpTest, self).setUp()
self.fake_connect = None
self.request_log = []
# Capture output, since the test-runner stdout/stderr monkey-patching
# won't cover the references to sys.stdout/sys.stderr in
# swiftclient.multithreading
self.capture_output = CaptureOutput()
if 'SWIFTCLIENT_DEBUG' not in os.environ:
self.capture_output.__enter__()
self.addCleanup(self.capture_output.__exit__)
# since we're going to steal all stderr output globally; we should
# give the developer an escape hatch or risk scorn
def blowup_but_with_the_helpful(*args, **kwargs):
raise Exception(
"You tried to enter a debugger while stderr is "
"patched, you need to set SWIFTCLIENT_DEBUG=1 "
"and try again")
import pdb
pdb.set_trace = blowup_but_with_the_helpful
def fake_http_connection(*args, **kwargs):
self.validateMockedRequestsConsumed()
self.request_log = []
self.fake_connect = fake_http_connect(*args, **kwargs)
_orig_http_connection = c.http_connection
query_string = kwargs.get('query_string')
storage_url = kwargs.get('storage_url')
auth_token = kwargs.get('auth_token')
exc = kwargs.get('exc')
on_request = kwargs.get('on_request')
def wrapper(url, proxy=None, cacert=None, insecure=False,
cert=None, cert_key=None,
ssl_compression=True, timeout=None):
if storage_url:
self.assertEqual(storage_url, url)
parsed, _conn = _orig_http_connection(url, proxy=proxy)
class RequestsWrapper(object):
def close(self):
if hasattr(self, 'resp'):
self.resp.close()
conn = RequestsWrapper()
def request(method, path, *args, **kwargs):
try:
conn.resp = self.fake_connect()
except StopIteration:
self.fail('Unexpected %s request for %s' % (
method, path))
self.request_log.append((parsed, method, path, args,
kwargs, conn.resp))
conn.host = conn.resp.host
conn.resp.request = RequestsWrapper()
conn.resp.request.url = '%s://%s%s' % (
conn.resp.scheme, conn.resp.host, path)
conn.resp.has_been_read = False
_orig_read = conn.resp.read
def read(*args, **kwargs):
conn.resp.has_been_read = True
return _orig_read(*args, **kwargs)
conn.resp.read = read
if on_request:
status = on_request(method, path, *args, **kwargs)
conn.resp.status = status
if auth_token:
headers = args[1]
self.assertEqual(auth_token,
headers.get('X-Auth-Token'))
if query_string:
self.assertTrue(path.endswith('?' + query_string))
if path.endswith('invalid_cert') and not insecure:
from swiftclient import client as c
raise c.ClientException("invalid_certificate")
if exc:
raise exc
return conn.resp
def putrequest(path, data=None, headers=None, **kwargs):
request('PUT', path, data, headers, **kwargs)
conn.request = request
conn.putrequest = putrequest
def getresponse():
return conn.resp
conn.getresponse = getresponse
return parsed, conn
return wrapper
self.fake_http_connection = fake_http_connection
def iter_request_log(self):
for parsed, method, path, args, kwargs, resp in self.request_log:
parts = parsed._asdict()
parts['path'] = path
full_path = ParseResult(**parts).geturl()
args = list(args)
log = dict(zip(('body', 'headers'), args))
log.update({
'method': method,
'full_path': full_path,
'parsed_path': urlparse(full_path),
'path': path,
'headers': CaseInsensitiveDict(log.get('headers')),
'resp': resp,
'status': resp.status,
})
yield log
orig_assertEqual = unittest.TestCase.assertEqual
def assert_request_equal(self, expected, real_request):
method, path = expected[:2]
if urlparse(path).scheme:
match_path = real_request['full_path']
else:
match_path = real_request['path']
self.assertEqual((method, path), (real_request['method'],
match_path))
if len(expected) > 2:
body = expected[2]
real_request['expected'] = body
err_msg = 'Body mismatch for %(method)s %(path)s, ' \
'expected %(expected)r, and got %(body)r' % real_request
self.orig_assertEqual(body, real_request['body'], err_msg)
if len(expected) > 3:
headers = CaseInsensitiveDict(expected[3])
for key, value in headers.items():
real_request['key'] = key
real_request['expected_value'] = value
real_request['value'] = real_request['headers'].get(key)
err_msg = (
'Header mismatch on %(key)r, '
'expected %(expected_value)r and got %(value)r '
'for %(method)s %(path)s %(headers)r' % real_request)
self.orig_assertEqual(value, real_request['value'],
err_msg)
real_request['extra_headers'] = dict(
(key, value) for key, value in real_request['headers'].items()
if key not in headers)
if real_request['extra_headers']:
self.fail('Received unexpected headers for %(method)s '
'%(path)s, got %(extra_headers)r' % real_request)
def assertRequests(self, expected_requests):
"""
Make sure some requests were made like you expected, provide a list of
expected requests, typically in the form of [(method, path), ...]
or [(method, path, body, headers), ...]
"""
real_requests = self.iter_request_log()
for expected in expected_requests:
real_request = next(real_requests)
self.assert_request_equal(expected, real_request)
try:
real_request = next(real_requests)
except StopIteration:
pass
else:
self.fail('At least one extra request received: %r' %
real_request)
def assert_request(self, expected_request):
"""
Make sure a request was made as expected. Provide the
expected request in the form of [(method, path), ...]
"""
real_requests = self.iter_request_log()
for real_request in real_requests:
try:
self.assert_request_equal(expected_request, real_request)
break
except AssertionError:
pass
else:
raise AssertionError(
"Expected request %s not found in actual requests %s"
% (expected_request, self.request_log)
)
def validateMockedRequestsConsumed(self):
if not self.fake_connect:
return
unused_responses = list(self.fake_connect.code_iter)
if unused_responses:
self.fail('Unused responses %r' % (unused_responses,))
def tearDown(self):
self.validateMockedRequestsConsumed()
super(MockHttpTest, self).tearDown()
# TODO: this nuke from orbit clean up seems to be encouraging
# un-hygienic mocking on the swiftclient.client module; which may lead
# to some unfortunate test order dependency bugs by way of the broken
# window theory if any other modules are similarly patched
reload_module(c)
class CaptureStreamPrinter(object):
"""
CaptureStreamPrinter is used for testing unicode writing for PY3. Anything
written here is encoded as utf-8 and written to the parent CaptureStream
"""
def __init__(self, captured_stream):
self._captured_stream = captured_stream
def write(self, data):
# No encoding, just convert the raw bytes into a str for testing
# The below call also validates that we have a byte string.
self._captured_stream.write(
data if isinstance(data, six.binary_type) else data.encode('utf8'))
class CaptureStream(object):
def __init__(self, stream):
self.stream = stream
self._buffer = six.BytesIO()
self._capture = CaptureStreamPrinter(self._buffer)
self.streams = [self._capture]
@property
def buffer(self):
if six.PY3:
return self._buffer
else:
raise AttributeError(
'Output stream has no attribute "buffer" in Python2')
def flush(self):
pass
def write(self, *args, **kwargs):
for stream in self.streams:
stream.write(*args, **kwargs)
def writelines(self, *args, **kwargs):
for stream in self.streams:
stream.writelines(*args, **kwargs)
def getvalue(self):
return self._buffer.getvalue()
def clear(self):
self._buffer.truncate(0)
self._buffer.seek(0)
class CaptureOutput(object):
def __init__(self, suppress_systemexit=False):
self._out = CaptureStream(sys.stdout)
self._err = CaptureStream(sys.stderr)
self.patchers = []
WrappedOutputManager = functools.partial(s.OutputManager,
print_stream=self._out,
error_stream=self._err)
if suppress_systemexit:
self.patchers += [
mock.patch('swiftclient.shell.OutputManager.get_error_count',
return_value=0)
]
self.patchers += [
mock.patch('swiftclient.shell.OutputManager',
WrappedOutputManager),
mock.patch('sys.stdout', self._out),
mock.patch('sys.stderr', self._err),
]
def __enter__(self):
for patcher in self.patchers:
patcher.start()
return self
def __exit__(self, *args, **kwargs):
for patcher in self.patchers:
patcher.stop()
@property
def out(self):
return self._out.getvalue().decode('utf8')
@property
def err(self):
return self._err.getvalue().decode('utf8')
def clear(self):
self._out.clear()
self._err.clear()
# act like the string captured by stdout
def __str__(self):
return self.out
def __len__(self):
return len(self.out)
def __eq__(self, other):
return self.out == other
def __ne__(self, other):
return not self.__eq__(other)
def __getattr__(self, name):
return getattr(self.out, name)
class FakeKeystone(object):
'''
Fake keystone client module. Returns given endpoint url and auth token.
'''
def __init__(self, endpoint, token):
self.calls = []
self.auth_version = None
self.endpoint = endpoint
self.token = token
class _Client(object):
def __init__(self, endpoint, auth_token, **kwargs):
self.auth_token = auth_token
self.endpoint = endpoint
self.service_catalog = self.ServiceCatalog(endpoint)
class ServiceCatalog(object):
def __init__(self, endpoint):
self.calls = []
self.endpoint_url = endpoint
def url_for(self, **kwargs):
self.calls.append(kwargs)
return self.endpoint_url
def Client(self, **kwargs):
self.calls.append(kwargs)
self.client = self._Client(
endpoint=self.endpoint, auth_token=self.token, **kwargs)
return self.client
class Unauthorized(Exception):
pass
class AuthorizationFailure(Exception):
pass
class EndpointNotFound(Exception):
pass
class FakeStream(object):
def __init__(self, size):
self.bytes_read = 0
self.size = size
def read(self, size=-1):
if self.bytes_read == self.size:
return b''
if size == -1 or size + self.bytes_read > self.size:
remaining = self.size - self.bytes_read
self.bytes_read = self.size
return b'A' * remaining
self.bytes_read += size
return b'A' * size
def __len__(self):
return self.size