a4fb70ece1
Previously, we compared the ETag from Swift against the MD5 of the entire large object. However, the ETag for large objects is generally the MD5 of the concatenation of the ETags for each segment, unless the object is a DLO whose segments span more than one page of a container listing. Rather than worry about ETags, just compare each chunk of the segmented file. This allows the use of --skip-identical when uploading SLOs and DLOs. Additionally, there are several test-related improvements: * The default arguments for OutputManager are now evaluated on construction, rather than on definition, so that TestOutputManager.test_instantiation will succeed when using nosetest as a test runner. (See also: bug 1251507) * An account_username option is now available in the functional tests config file for auth systems that do not follow the account:username format. * CaptureOutput no longer writes to the captured stream, and MockHttpTest now captures output. These were polluting test output unnecessarily. (See also: bug 1201376) Change-Id: Ic484e9a0c186c9283c4012c6a2fa77b96b8edf8a Closes-Bug: #1201376 Closes-Bug: #1379252 Related-Bug: #1251507
489 lines
17 KiB
Python
489 lines
17 KiB
Python
# Copyright (c) 2010-2012 OpenStack, LLC.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import functools
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import sys
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from requests import RequestException
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from requests.structures import CaseInsensitiveDict
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from time import sleep
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import unittest
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import testtools
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import mock
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import six
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from six.moves import reload_module
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from six.moves.urllib.parse import urlparse, ParseResult
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from swiftclient import client as c
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from swiftclient import shell as s
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def fake_get_auth_keystone(expected_os_options=None, exc=None,
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storage_url='http://url/', token='token',
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**kwargs):
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def fake_get_auth_keystone(auth_url,
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user,
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key,
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actual_os_options, **actual_kwargs):
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if exc:
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raise exc('test')
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# TODO: some way to require auth_url, user and key?
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if expected_os_options and actual_os_options != expected_os_options:
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return "", None
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if 'required_kwargs' in kwargs:
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for k, v in kwargs['required_kwargs'].items():
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if v != actual_kwargs.get(k):
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return "", None
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if auth_url.startswith("https") and \
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auth_url.endswith("invalid-certificate") and \
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not actual_kwargs['insecure']:
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from swiftclient import client as c
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raise c.ClientException("invalid-certificate")
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if auth_url.startswith("https") and \
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auth_url.endswith("self-signed-certificate") and \
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not actual_kwargs['insecure'] and \
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actual_kwargs['cacert'] is None:
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from swiftclient import client as c
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raise c.ClientException("unverified-certificate")
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return storage_url, token
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return fake_get_auth_keystone
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class StubResponse(object):
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"""
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Placeholder structure for use with fake_http_connect's code_iter to modify
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response attributes (status, body, headers) on a per-request basis.
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"""
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def __init__(self, status=200, body='', headers=None):
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self.status = status
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self.body = body
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self.headers = headers or {}
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def fake_http_connect(*code_iter, **kwargs):
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"""
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Generate a callable which yields a series of stubbed responses. Because
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swiftclient will reuse an HTTP connection across pipelined requests it is
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not always the case that this fake is used strictly for mocking an HTTP
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connection, but rather each HTTP response (i.e. each call to requests
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get_response).
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"""
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class FakeConn(object):
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def __init__(self, status, etag=None, body='', timestamp='1',
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headers=None):
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self.status = status
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self.reason = 'Fake'
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self.host = '1.2.3.4'
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self.port = '1234'
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self.sent = 0
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self.received = 0
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self.etag = etag
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self.body = body
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self.timestamp = timestamp
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self._is_closed = True
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self.headers = headers or {}
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def connect(self):
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self._is_closed = False
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def close(self):
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self._is_closed = True
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def isclosed(self):
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return self._is_closed
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def getresponse(self):
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if kwargs.get('raise_exc'):
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raise Exception('test')
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return self
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def getexpect(self):
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if self.status == -2:
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raise RequestException()
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if self.status == -3:
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return FakeConn(507)
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return FakeConn(100)
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def getheaders(self):
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if self.headers:
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return self.headers.items()
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headers = {'content-length': len(self.body),
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'content-type': 'x-application/test',
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'x-timestamp': self.timestamp,
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'last-modified': self.timestamp,
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'x-object-meta-test': 'testing',
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'etag':
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self.etag or '"d41d8cd98f00b204e9800998ecf8427e"',
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'x-works': 'yes',
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'x-account-container-count': 12345}
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if not self.timestamp:
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del headers['x-timestamp']
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try:
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if next(container_ts_iter) is False:
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headers['x-container-timestamp'] = '1'
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except StopIteration:
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pass
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if 'slow' in kwargs:
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headers['content-length'] = '4'
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if 'headers' in kwargs:
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headers.update(kwargs['headers'])
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if 'auth_v1' in kwargs:
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headers.update(
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{'x-storage-url': 'storageURL',
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'x-auth-token': 'someauthtoken'})
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return headers.items()
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def read(self, amt=None):
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if 'slow' in kwargs:
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if self.sent < 4:
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self.sent += 1
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sleep(0.1)
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return ' '
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rv = self.body[:amt]
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self.body = self.body[amt:]
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return rv
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def send(self, amt=None):
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if 'slow' in kwargs:
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if self.received < 4:
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self.received += 1
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sleep(0.1)
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def getheader(self, name, default=None):
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return dict(self.getheaders()).get(name.lower(), default)
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timestamps_iter = iter(kwargs.get('timestamps') or ['1'] * len(code_iter))
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etag_iter = iter(kwargs.get('etags') or [None] * len(code_iter))
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x = kwargs.get('missing_container', [False] * len(code_iter))
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if not isinstance(x, (tuple, list)):
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x = [x] * len(code_iter)
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container_ts_iter = iter(x)
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code_iter = iter(code_iter)
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def connect(*args, **ckwargs):
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if 'give_content_type' in kwargs:
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if len(args) >= 7 and 'Content-Type' in args[6]:
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kwargs['give_content_type'](args[6]['Content-Type'])
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else:
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kwargs['give_content_type']('')
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if 'give_connect' in kwargs:
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kwargs['give_connect'](*args, **ckwargs)
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status = next(code_iter)
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if isinstance(status, StubResponse):
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fake_conn = FakeConn(status.status, body=status.body,
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headers=status.headers)
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else:
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etag = next(etag_iter)
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timestamp = next(timestamps_iter)
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fake_conn = FakeConn(status, etag, body=kwargs.get('body', ''),
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timestamp=timestamp)
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if fake_conn.status <= 0:
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raise RequestException()
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fake_conn.connect()
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return fake_conn
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connect.code_iter = code_iter
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return connect
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class MockHttpTest(testtools.TestCase):
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def setUp(self):
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super(MockHttpTest, self).setUp()
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self.fake_connect = None
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self.request_log = []
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# Capture output, since the test-runner stdout/stderr moneky-patching
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# won't cover the references to sys.stdout/sys.stderr in
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# swiftclient.multithreading
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self.capture_output = CaptureOutput()
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self.capture_output.__enter__()
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def fake_http_connection(*args, **kwargs):
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self.validateMockedRequestsConsumed()
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self.request_log = []
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self.fake_connect = fake_http_connect(*args, **kwargs)
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_orig_http_connection = c.http_connection
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query_string = kwargs.get('query_string')
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storage_url = kwargs.get('storage_url')
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auth_token = kwargs.get('auth_token')
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exc = kwargs.get('exc')
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on_request = kwargs.get('on_request')
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def wrapper(url, proxy=None, cacert=None, insecure=False,
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ssl_compression=True):
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if storage_url:
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self.assertEqual(storage_url, url)
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parsed, _conn = _orig_http_connection(url, proxy=proxy)
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class RequestsWrapper(object):
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pass
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conn = RequestsWrapper()
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def request(method, url, *args, **kwargs):
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try:
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conn.resp = self.fake_connect()
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except StopIteration:
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self.fail('Unexpected %s request for %s' % (
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method, url))
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self.request_log.append((parsed, method, url, args,
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kwargs, conn.resp))
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conn.host = conn.resp.host
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conn.isclosed = conn.resp.isclosed
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conn.resp.has_been_read = False
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_orig_read = conn.resp.read
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def read(*args, **kwargs):
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conn.resp.has_been_read = True
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return _orig_read(*args, **kwargs)
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conn.resp.read = read
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if on_request:
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status = on_request(method, url, *args, **kwargs)
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conn.resp.status = status
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if auth_token:
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headers = args[1]
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self.assertTrue('X-Auth-Token' in headers)
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actual_token = headers.get('X-Auth-Token')
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self.assertEqual(auth_token, actual_token)
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if query_string:
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self.assertTrue(url.endswith('?' + query_string))
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if url.endswith('invalid_cert') and not insecure:
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from swiftclient import client as c
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raise c.ClientException("invalid_certificate")
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if exc:
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raise exc
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return conn.resp
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def putrequest(path, data=None, headers=None, **kwargs):
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request('PUT', path, data, headers, **kwargs)
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conn.request = request
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conn.putrequest = putrequest
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def getresponse():
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return conn.resp
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conn.getresponse = getresponse
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return parsed, conn
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return wrapper
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self.fake_http_connection = fake_http_connection
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def iter_request_log(self):
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for parsed, method, path, args, kwargs, resp in self.request_log:
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parts = parsed._asdict()
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parts['path'] = path
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full_path = ParseResult(**parts).geturl()
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args = list(args)
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log = dict(zip(('body', 'headers'), args))
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log.update({
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'method': method,
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'full_path': full_path,
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'parsed_path': urlparse(full_path),
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'path': path,
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'headers': CaseInsensitiveDict(log.get('headers')),
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'resp': resp,
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'status': resp.status,
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})
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yield log
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orig_assertEqual = unittest.TestCase.assertEqual
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def assert_request_equal(self, expected, real_request):
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method, path = expected[:2]
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if urlparse(path).scheme:
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match_path = real_request['full_path']
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else:
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match_path = real_request['path']
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self.assertEqual((method, path), (real_request['method'],
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match_path))
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if len(expected) > 2:
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body = expected[2]
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real_request['expected'] = body
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err_msg = 'Body mismatch for %(method)s %(path)s, ' \
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'expected %(expected)r, and got %(body)r' % real_request
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self.orig_assertEqual(body, real_request['body'], err_msg)
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if len(expected) > 3:
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headers = expected[3]
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for key, value in headers.items():
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real_request['key'] = key
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real_request['expected_value'] = value
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real_request['value'] = real_request['headers'].get(key)
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err_msg = (
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'Header mismatch on %(key)r, '
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'expected %(expected_value)r and got %(value)r '
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'for %(method)s %(path)s %(headers)r' % real_request)
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self.orig_assertEqual(value, real_request['value'],
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err_msg)
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def assertRequests(self, expected_requests):
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"""
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Make sure some requests were made like you expected, provide a list of
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expected requests, typically in the form of [(method, path), ...]
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"""
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real_requests = self.iter_request_log()
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for expected in expected_requests:
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real_request = next(real_requests)
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self.assert_request_equal(expected, real_request)
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def assert_request(self, expected_request):
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"""
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Make sure a request was made as expected. Provide the
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expected request in the form of [(method, path), ...]
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"""
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real_requests = self.iter_request_log()
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for real_request in real_requests:
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try:
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self.assert_request_equal(expected_request, real_request)
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break
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except AssertionError:
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pass
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else:
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raise AssertionError(
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"Expected request %s not found in actual requests %s"
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% (expected_request, self.request_log)
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)
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def validateMockedRequestsConsumed(self):
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if not self.fake_connect:
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return
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unused_responses = list(self.fake_connect.code_iter)
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if unused_responses:
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self.fail('Unused responses %r' % (unused_responses,))
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def tearDown(self):
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self.validateMockedRequestsConsumed()
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super(MockHttpTest, self).tearDown()
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# TODO: this nuke from orbit clean up seems to be encouraging
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# un-hygienic mocking on the swiftclient.client module; which may lead
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# to some unfortunate test order dependency bugs by way of the broken
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# window theory if any other modules are similarly patched
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self.capture_output.__exit__()
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reload_module(c)
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class CaptureStreamBuffer(object):
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"""
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CaptureStreamBuffer is used for testing raw byte writing for PY3. Anything
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written here is decoded as utf-8 and written to the parent CaptureStream
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"""
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def __init__(self, captured_stream):
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self._captured_stream = captured_stream
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def write(self, bytes_data):
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# No encoding, just convert the raw bytes into a str for testing
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# The below call also validates that we have a byte string.
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self._captured_stream.write(
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''.join(map(chr, bytes_data))
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)
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class CaptureStream(object):
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def __init__(self, stream):
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self.stream = stream
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self._capture = six.StringIO()
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self._buffer = CaptureStreamBuffer(self)
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self.streams = [self._capture]
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@property
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def buffer(self):
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if six.PY3:
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return self._buffer
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else:
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raise AttributeError(
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'Output stream has no attribute "buffer" in Python2')
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def flush(self):
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pass
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def write(self, *args, **kwargs):
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for stream in self.streams:
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stream.write(*args, **kwargs)
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def writelines(self, *args, **kwargs):
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for stream in self.streams:
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stream.writelines(*args, **kwargs)
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def getvalue(self):
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return self._capture.getvalue()
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def clear(self):
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self._capture.truncate(0)
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self._capture.seek(0)
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class CaptureOutput(object):
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def __init__(self, suppress_systemexit=False):
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self._out = CaptureStream(sys.stdout)
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self._err = CaptureStream(sys.stderr)
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self.patchers = []
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WrappedOutputManager = functools.partial(s.OutputManager,
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print_stream=self._out,
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error_stream=self._err)
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if suppress_systemexit:
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self.patchers += [
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mock.patch('swiftclient.shell.OutputManager.get_error_count',
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return_value=0)
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]
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self.patchers += [
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mock.patch('swiftclient.shell.OutputManager',
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WrappedOutputManager),
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mock.patch('sys.stdout', self._out),
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mock.patch('sys.stderr', self._err),
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]
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def __enter__(self):
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for patcher in self.patchers:
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patcher.start()
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return self
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def __exit__(self, *args, **kwargs):
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for patcher in self.patchers:
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patcher.stop()
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@property
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def out(self):
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return self._out.getvalue()
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@property
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def err(self):
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return self._err.getvalue()
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def clear(self):
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self._out.clear()
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self._err.clear()
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# act like the string captured by stdout
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def __str__(self):
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return self.out
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def __len__(self):
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return len(self.out)
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def __eq__(self, other):
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return self.out == other
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def __getattr__(self, name):
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return getattr(self.out, name)
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