698 lines
27 KiB
Python
698 lines
27 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 OpenStack, LLC
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this swift except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Tests the Swift backend store"""
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import hashlib
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import httplib
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import StringIO
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import tempfile
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import urllib
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import stubout
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import swiftclient
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from glance.common import exception
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from glance.common import utils
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from glance.openstack.common import cfg
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from glance.store import BackendException
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from glance.store.location import get_location_from_uri
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import glance.store.swift
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from glance.tests.unit import base
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CONF = cfg.CONF
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FAKE_UUID = utils.generate_uuid
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Store = glance.store.swift.Store
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FIVE_KB = (5 * 1024)
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FIVE_GB = (5 * 1024 * 1024 * 1024)
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MAX_SWIFT_OBJECT_SIZE = FIVE_GB
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SWIFT_PUT_OBJECT_CALLS = 0
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SWIFT_CONF = {'verbose': True,
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'debug': True,
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'known_stores': ['glance.store.swift.Store'],
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'default_store': 'swift',
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'swift_store_user': 'user',
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'swift_store_key': 'key',
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'swift_store_auth_address': 'localhost:8080',
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'swift_store_container': 'glance'}
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# We stub out as little as possible to ensure that the code paths
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# between glance.store.swift and swiftclient are tested
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# thoroughly
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def stub_out_swiftclient(stubs, swift_store_auth_version):
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fixture_containers = ['glance']
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fixture_container_headers = {}
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fixture_headers = {'glance/%s' % FAKE_UUID:
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{'content-length': FIVE_KB,
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'etag': 'c2e5db72bd7fd153f53ede5da5a06de3'}}
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fixture_objects = {'glance/%s' % FAKE_UUID:
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StringIO.StringIO("*" * FIVE_KB)}
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def fake_head_container(url, token, container, **kwargs):
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if container not in fixture_containers:
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msg = "No container %s found" % container
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raise swiftclient.ClientException(msg,
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http_status=httplib.NOT_FOUND)
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return fixture_container_headers
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def fake_put_container(url, token, container, **kwargs):
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fixture_containers.append(container)
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def fake_post_container(url, token, container, headers, http_conn=None):
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for key, value in headers.iteritems():
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fixture_container_headers[key] = value
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def fake_put_object(url, token, container, name, contents, **kwargs):
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# PUT returns the ETag header for the newly-added object
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# Large object manifest...
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global SWIFT_PUT_OBJECT_CALLS
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SWIFT_PUT_OBJECT_CALLS += 1
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fixture_key = "%s/%s" % (container, name)
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if not fixture_key in fixture_headers.keys():
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if kwargs.get('headers'):
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etag = kwargs['headers']['ETag']
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fixture_headers[fixture_key] = {'manifest': True,
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'etag': etag}
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return etag
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if hasattr(contents, 'read'):
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fixture_object = StringIO.StringIO()
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chunk = contents.read(Store.CHUNKSIZE)
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checksum = hashlib.md5()
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while chunk:
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fixture_object.write(chunk)
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checksum.update(chunk)
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chunk = contents.read(Store.CHUNKSIZE)
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etag = checksum.hexdigest()
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else:
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fixture_object = StringIO.StringIO(contents)
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etag = hashlib.md5(fixture_object.getvalue()).hexdigest()
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read_len = fixture_object.len
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if read_len > MAX_SWIFT_OBJECT_SIZE:
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msg = ('Image size:%d exceeds Swift max:%d' %
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(read_len, MAX_SWIFT_OBJECT_SIZE))
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raise swiftclient.ClientException(
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msg, http_status=httplib.REQUEST_ENTITY_TOO_LARGE)
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fixture_objects[fixture_key] = fixture_object
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fixture_headers[fixture_key] = {
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'content-length': read_len,
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'etag': etag}
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return etag
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else:
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msg = ("Object PUT failed - Object with key %s already exists"
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% fixture_key)
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raise swiftclient.ClientException(msg,
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http_status=httplib.CONFLICT)
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def fake_get_object(url, token, container, name, **kwargs):
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# GET returns the tuple (list of headers, file object)
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fixture_key = "%s/%s" % (container, name)
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if not fixture_key in fixture_headers:
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msg = "Object GET failed"
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raise swiftclient.ClientException(msg,
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http_status=httplib.NOT_FOUND)
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fixture = fixture_headers[fixture_key]
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if 'manifest' in fixture:
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# Large object manifest... we return a file containing
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# all objects with prefix of this fixture key
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chunk_keys = sorted([k for k in fixture_headers.keys()
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if k.startswith(fixture_key) and
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k != fixture_key])
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result = StringIO.StringIO()
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for key in chunk_keys:
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result.write(fixture_objects[key].getvalue())
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return fixture_headers[fixture_key], result
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else:
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return fixture_headers[fixture_key], fixture_objects[fixture_key]
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def fake_head_object(url, token, container, name, **kwargs):
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# HEAD returns the list of headers for an object
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try:
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fixture_key = "%s/%s" % (container, name)
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return fixture_headers[fixture_key]
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except KeyError:
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msg = "Object HEAD failed - Object does not exist"
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raise swiftclient.ClientException(msg,
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http_status=httplib.NOT_FOUND)
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def fake_delete_object(url, token, container, name, **kwargs):
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# DELETE returns nothing
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fixture_key = "%s/%s" % (container, name)
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if fixture_key not in fixture_headers.keys():
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msg = "Object DELETE failed - Object does not exist"
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raise swiftclient.ClientException(msg,
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http_status=httplib.NOT_FOUND)
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else:
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del fixture_headers[fixture_key]
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del fixture_objects[fixture_key]
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def fake_http_connection(*args, **kwargs):
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return None
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def fake_get_auth(url, user, key, snet, auth_version, **kwargs):
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if url is None:
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return None, None
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if 'http' in url and '://' not in url:
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raise ValueError('Invalid url %s' % url)
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# Check the auth version against the configured value
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if swift_store_auth_version != auth_version:
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msg = 'AUTHENTICATION failed (version mismatch)'
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raise swiftclient.ClientException(msg)
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return None, None
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stubs.Set(swiftclient.client,
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'head_container', fake_head_container)
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stubs.Set(swiftclient.client,
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'put_container', fake_put_container)
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stubs.Set(swiftclient.client,
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'post_container', fake_post_container)
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stubs.Set(swiftclient.client,
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'put_object', fake_put_object)
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stubs.Set(swiftclient.client,
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'delete_object', fake_delete_object)
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stubs.Set(swiftclient.client,
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'head_object', fake_head_object)
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stubs.Set(swiftclient.client,
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'get_object', fake_get_object)
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stubs.Set(swiftclient.client,
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'get_auth', fake_get_auth)
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stubs.Set(swiftclient.client,
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'http_connection', fake_http_connection)
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class SwiftTests(object):
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@property
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def swift_store_user(self):
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return urllib.quote(CONF.swift_store_user)
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def test_get_size(self):
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"""
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Test that we can get the size of an object in the swift store
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"""
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uri = "swift://%s:key@auth_address/glance/%s" % (
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self.swift_store_user, FAKE_UUID)
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loc = get_location_from_uri(uri)
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image_size = self.store.get_size(loc)
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self.assertEqual(image_size, 5120)
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def test_get(self):
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"""Test a "normal" retrieval of an image in chunks"""
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uri = "swift://%s:key@auth_address/glance/%s" % (
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self.swift_store_user, FAKE_UUID)
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loc = get_location_from_uri(uri)
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(image_swift, image_size) = self.store.get(loc)
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self.assertEqual(image_size, 5120)
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expected_data = "*" * FIVE_KB
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data = ""
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for chunk in image_swift:
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data += chunk
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self.assertEqual(expected_data, data)
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def test_get_with_http_auth(self):
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"""
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Test a retrieval from Swift with an HTTP authurl. This is
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specified either via a Location header with swift+http:// or using
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http:// in the swift_store_auth_address config value
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"""
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loc = get_location_from_uri("swift+http://%s:key@auth_address/"
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"glance/%s" %
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(self.swift_store_user, FAKE_UUID))
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(image_swift, image_size) = self.store.get(loc)
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self.assertEqual(image_size, 5120)
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expected_data = "*" * FIVE_KB
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data = ""
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for chunk in image_swift:
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data += chunk
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self.assertEqual(expected_data, data)
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def test_get_non_existing(self):
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"""
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Test that trying to retrieve a swift that doesn't exist
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raises an error
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"""
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loc = get_location_from_uri("swift://%s:key@authurl/glance/noexist" % (
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self.swift_store_user))
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self.assertRaises(exception.NotFound,
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self.store.get,
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loc)
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def test_add(self):
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"""Test that we can add an image via the swift backend"""
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expected_swift_size = FIVE_KB
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expected_swift_contents = "*" * expected_swift_size
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expected_checksum = hashlib.md5(expected_swift_contents).hexdigest()
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expected_image_id = utils.generate_uuid()
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loc = 'swift+https://%s:key@localhost:8080/glance/%s'
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expected_location = loc % (self.swift_store_user,
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expected_image_id)
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image_swift = StringIO.StringIO(expected_swift_contents)
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global SWIFT_PUT_OBJECT_CALLS
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SWIFT_PUT_OBJECT_CALLS = 0
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location, size, checksum = self.store.add(expected_image_id,
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image_swift,
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expected_swift_size)
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self.assertEquals(expected_location, location)
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self.assertEquals(expected_swift_size, size)
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self.assertEquals(expected_checksum, checksum)
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# Expecting a single object to be created on Swift i.e. no chunking.
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self.assertEquals(SWIFT_PUT_OBJECT_CALLS, 1)
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loc = get_location_from_uri(expected_location)
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(new_image_swift, new_image_size) = self.store.get(loc)
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new_image_contents = new_image_swift.getvalue()
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new_image_swift_size = len(new_image_swift)
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self.assertEquals(expected_swift_contents, new_image_contents)
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self.assertEquals(expected_swift_size, new_image_swift_size)
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def test_add_auth_url_variations(self):
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"""
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Test that we can add an image via the swift backend with
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a variety of different auth_address values
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"""
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variations = {
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'http://localhost:80': 'swift+http://%s:key@localhost:80'
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'/glance/%s',
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'http://localhost': 'swift+http://%s:key@localhost/glance/%s',
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'http://localhost/v1': 'swift+http://%s:key@localhost'
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'/v1/glance/%s',
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'http://localhost/v1/': 'swift+http://%s:key@localhost'
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'/v1/glance/%s',
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'https://localhost': 'swift+https://%s:key@localhost/glance/%s',
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'https://localhost:8080': 'swift+https://%s:key@localhost:8080'
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'/glance/%s',
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'https://localhost/v1': 'swift+https://%s:key@localhost'
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'/v1/glance/%s',
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'https://localhost/v1/': 'swift+https://%s:key@localhost'
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'/v1/glance/%s',
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'localhost': 'swift+https://%s:key@localhost/glance/%s',
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'localhost:8080/v1': 'swift+https://%s:key@localhost:8080'
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'/v1/glance/%s',
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}
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for variation, expected_location in variations.items():
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image_id = utils.generate_uuid()
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expected_location = expected_location % (
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self.swift_store_user, image_id)
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expected_swift_size = FIVE_KB
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expected_swift_contents = "*" * expected_swift_size
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expected_checksum = \
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hashlib.md5(expected_swift_contents).hexdigest()
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image_swift = StringIO.StringIO(expected_swift_contents)
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global SWIFT_PUT_OBJECT_CALLS
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SWIFT_PUT_OBJECT_CALLS = 0
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self.config(swift_store_auth_address=variation)
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self.store = Store()
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location, size, checksum = self.store.add(image_id, image_swift,
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expected_swift_size)
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self.assertEquals(expected_location, location)
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self.assertEquals(expected_swift_size, size)
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self.assertEquals(expected_checksum, checksum)
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self.assertEquals(SWIFT_PUT_OBJECT_CALLS, 1)
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loc = get_location_from_uri(expected_location)
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(new_image_swift, new_image_size) = self.store.get(loc)
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new_image_contents = new_image_swift.getvalue()
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new_image_swift_size = len(new_image_swift)
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self.assertEquals(expected_swift_contents, new_image_contents)
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self.assertEquals(expected_swift_size, new_image_swift_size)
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def test_add_no_container_no_create(self):
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"""
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Tests that adding an image with a non-existing container
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raises an appropriate exception
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"""
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self.config(swift_store_create_container_on_put=False,
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swift_store_container='noexist')
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self.store = Store()
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image_swift = StringIO.StringIO("nevergonnamakeit")
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global SWIFT_PUT_OBJECT_CALLS
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SWIFT_PUT_OBJECT_CALLS = 0
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# We check the exception text to ensure the container
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# missing text is found in it, otherwise, we would have
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# simply used self.assertRaises here
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exception_caught = False
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try:
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self.store.add(utils.generate_uuid(), image_swift, 0)
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except BackendException, e:
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exception_caught = True
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self.assertTrue("container noexist does not exist "
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"in Swift" in str(e))
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self.assertTrue(exception_caught)
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self.assertEquals(SWIFT_PUT_OBJECT_CALLS, 0)
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def test_add_no_container_and_create(self):
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"""
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Tests that adding an image with a non-existing container
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creates the container automatically if flag is set
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"""
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expected_swift_size = FIVE_KB
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expected_swift_contents = "*" * expected_swift_size
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expected_checksum = hashlib.md5(expected_swift_contents).hexdigest()
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expected_image_id = utils.generate_uuid()
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loc = 'swift+https://%s:key@localhost:8080/noexist/%s'
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expected_location = loc % (self.swift_store_user,
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expected_image_id)
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image_swift = StringIO.StringIO(expected_swift_contents)
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global SWIFT_PUT_OBJECT_CALLS
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SWIFT_PUT_OBJECT_CALLS = 0
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self.config(swift_store_create_container_on_put=True,
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swift_store_container='noexist')
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self.store = Store()
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location, size, checksum = self.store.add(expected_image_id,
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image_swift,
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expected_swift_size)
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self.assertEquals(expected_location, location)
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self.assertEquals(expected_swift_size, size)
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self.assertEquals(expected_checksum, checksum)
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self.assertEquals(SWIFT_PUT_OBJECT_CALLS, 1)
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loc = get_location_from_uri(expected_location)
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(new_image_swift, new_image_size) = self.store.get(loc)
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new_image_contents = new_image_swift.getvalue()
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new_image_swift_size = len(new_image_swift)
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self.assertEquals(expected_swift_contents, new_image_contents)
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self.assertEquals(expected_swift_size, new_image_swift_size)
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def test_add_large_object(self):
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"""
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Tests that adding a very large image. We simulate the large
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object by setting store.large_object_size to a small number
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and then verify that there have been a number of calls to
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put_object()...
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"""
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expected_swift_size = FIVE_KB
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expected_swift_contents = "*" * expected_swift_size
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expected_checksum = hashlib.md5(expected_swift_contents).hexdigest()
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expected_image_id = utils.generate_uuid()
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loc = 'swift+https://%s:key@localhost:8080/glance/%s'
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expected_location = loc % (self.swift_store_user,
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expected_image_id)
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image_swift = StringIO.StringIO(expected_swift_contents)
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global SWIFT_PUT_OBJECT_CALLS
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SWIFT_PUT_OBJECT_CALLS = 0
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self.config(swift_store_container='glance')
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self.store = Store()
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orig_max_size = self.store.large_object_size
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orig_temp_size = self.store.large_object_chunk_size
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try:
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self.store.large_object_size = 1024
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self.store.large_object_chunk_size = 1024
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location, size, checksum = self.store.add(expected_image_id,
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image_swift,
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expected_swift_size)
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finally:
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self.store.large_object_chunk_size = orig_temp_size
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self.store.large_object_size = orig_max_size
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self.assertEquals(expected_location, location)
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self.assertEquals(expected_swift_size, size)
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self.assertEquals(expected_checksum, checksum)
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# Expecting 6 objects to be created on Swift -- 5 chunks and 1
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# manifest.
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self.assertEquals(SWIFT_PUT_OBJECT_CALLS, 6)
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loc = get_location_from_uri(expected_location)
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(new_image_swift, new_image_size) = self.store.get(loc)
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new_image_contents = new_image_swift.getvalue()
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new_image_swift_size = len(new_image_swift)
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self.assertEquals(expected_swift_contents, new_image_contents)
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self.assertEquals(expected_swift_size, new_image_swift_size)
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def test_add_large_object_zero_size(self):
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"""
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Tests that adding an image to Swift which has both an unknown size and
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exceeds Swift's maximum limit of 5GB is correctly uploaded.
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We avoid the overhead of creating a 5GB object for this test by
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temporarily setting MAX_SWIFT_OBJECT_SIZE to 1KB, and then adding
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an object of 5KB.
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Bug lp:891738
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"""
|
|
# Set up a 'large' image of 5KB
|
|
expected_swift_size = FIVE_KB
|
|
expected_swift_contents = "*" * expected_swift_size
|
|
expected_checksum = hashlib.md5(expected_swift_contents).hexdigest()
|
|
expected_image_id = utils.generate_uuid()
|
|
loc = 'swift+https://%s:key@localhost:8080/glance/%s'
|
|
expected_location = loc % (self.swift_store_user,
|
|
expected_image_id)
|
|
image_swift = StringIO.StringIO(expected_swift_contents)
|
|
|
|
global SWIFT_PUT_OBJECT_CALLS
|
|
SWIFT_PUT_OBJECT_CALLS = 0
|
|
|
|
# Temporarily set Swift MAX_SWIFT_OBJECT_SIZE to 1KB and add our image,
|
|
# explicitly setting the image_length to 0
|
|
self.config(swift_store_container='glance')
|
|
self.store = Store()
|
|
orig_max_size = self.store.large_object_size
|
|
orig_temp_size = self.store.large_object_chunk_size
|
|
global MAX_SWIFT_OBJECT_SIZE
|
|
orig_max_swift_object_size = MAX_SWIFT_OBJECT_SIZE
|
|
try:
|
|
MAX_SWIFT_OBJECT_SIZE = 1024
|
|
self.store.large_object_size = 1024
|
|
self.store.large_object_chunk_size = 1024
|
|
location, size, checksum = self.store.add(expected_image_id,
|
|
image_swift, 0)
|
|
finally:
|
|
self.store.large_object_chunk_size = orig_temp_size
|
|
self.store.large_object_size = orig_max_size
|
|
MAX_SWIFT_OBJECT_SIZE = orig_max_swift_object_size
|
|
|
|
self.assertEquals(expected_location, location)
|
|
self.assertEquals(expected_swift_size, size)
|
|
self.assertEquals(expected_checksum, checksum)
|
|
# Expecting 7 calls to put_object -- 5 chunks, a zero chunk which is
|
|
# then deleted, and the manifest. Note the difference with above
|
|
# where the image_size is specified in advance (there's no zero chunk
|
|
# in that case).
|
|
self.assertEquals(SWIFT_PUT_OBJECT_CALLS, 7)
|
|
|
|
loc = get_location_from_uri(expected_location)
|
|
(new_image_swift, new_image_size) = self.store.get(loc)
|
|
new_image_contents = new_image_swift.getvalue()
|
|
new_image_swift_size = len(new_image_swift)
|
|
|
|
self.assertEquals(expected_swift_contents, new_image_contents)
|
|
self.assertEquals(expected_swift_size, new_image_swift_size)
|
|
|
|
def test_add_already_existing(self):
|
|
"""
|
|
Tests that adding an image with an existing identifier
|
|
raises an appropriate exception
|
|
"""
|
|
image_swift = StringIO.StringIO("nevergonnamakeit")
|
|
self.assertRaises(exception.Duplicate,
|
|
self.store.add,
|
|
FAKE_UUID, image_swift, 0)
|
|
|
|
def _option_required(self, key):
|
|
conf = self.getConfig()
|
|
conf[key] = None
|
|
|
|
try:
|
|
self.config(**conf)
|
|
self.store = Store()
|
|
return self.store.add == self.store.add_disabled
|
|
except:
|
|
return False
|
|
return False
|
|
|
|
def test_no_user(self):
|
|
"""
|
|
Tests that options without user disables the add method
|
|
"""
|
|
self.assertTrue(self._option_required('swift_store_user'))
|
|
|
|
def test_no_key(self):
|
|
"""
|
|
Tests that options without key disables the add method
|
|
"""
|
|
self.assertTrue(self._option_required('swift_store_key'))
|
|
|
|
def test_no_auth_address(self):
|
|
"""
|
|
Tests that options without auth address disables the add method
|
|
"""
|
|
self.assertTrue(self._option_required('swift_store_auth_address'))
|
|
|
|
def test_delete(self):
|
|
"""
|
|
Test we can delete an existing image in the swift store
|
|
"""
|
|
uri = "swift://%s:key@authurl/glance/%s" % (
|
|
self.swift_store_user, FAKE_UUID)
|
|
loc = get_location_from_uri(uri)
|
|
self.store.delete(loc)
|
|
|
|
self.assertRaises(exception.NotFound, self.store.get, loc)
|
|
|
|
def test_delete_non_existing(self):
|
|
"""
|
|
Test that trying to delete a swift that doesn't exist
|
|
raises an error
|
|
"""
|
|
loc = get_location_from_uri("swift://%s:key@authurl/glance/noexist" % (
|
|
self.swift_store_user))
|
|
self.assertRaises(exception.NotFound, self.store.delete, loc)
|
|
|
|
def test_read_acl_public(self):
|
|
"""
|
|
Test that we can set a public read acl.
|
|
"""
|
|
self.config(swift_store_multi_tenant=True)
|
|
uri = "swift+http://storeurl/glance/%s" % FAKE_UUID
|
|
loc = get_location_from_uri(uri)
|
|
self.store.multi_tenant = True
|
|
self.store.set_acls(loc, public=True)
|
|
container_headers = swiftclient.client.head_container('x', 'y',
|
|
'glance')
|
|
self.assertEqual(container_headers['X-Container-Read'], ".r:*")
|
|
|
|
def test_read_acl_tenants(self):
|
|
"""
|
|
Test that we can set read acl for tenants.
|
|
"""
|
|
self.config(swift_store_multi_tenant=True)
|
|
uri = "swift+http://storeurl/glance/%s" % FAKE_UUID
|
|
loc = get_location_from_uri(uri)
|
|
self.store.multi_tenant = True
|
|
read_tenants = ['matt', 'mark']
|
|
self.store.set_acls(loc, read_tenants=read_tenants)
|
|
container_headers = swiftclient.client.head_container('x', 'y',
|
|
'glance')
|
|
self.assertEqual(container_headers['X-Container-Read'],
|
|
','.join(read_tenants))
|
|
|
|
def test_read_write_public(self):
|
|
"""
|
|
Test that we can set write acl for tenants.
|
|
"""
|
|
self.config(swift_store_multi_tenant=True)
|
|
uri = "swift+http://storeurl/glance/%s" % FAKE_UUID
|
|
loc = get_location_from_uri(uri)
|
|
self.store.multi_tenant = True
|
|
read_tenants = ['frank', 'jim']
|
|
self.store.set_acls(loc, write_tenants=read_tenants)
|
|
container_headers = swiftclient.client.head_container('x', 'y',
|
|
'glance')
|
|
self.assertEqual(container_headers['X-Container-Write'],
|
|
','.join(read_tenants))
|
|
|
|
|
|
class TestStoreAuthV1(base.StoreClearingUnitTest, SwiftTests):
|
|
|
|
def getConfig(self):
|
|
conf = SWIFT_CONF.copy()
|
|
conf['swift_store_auth_version'] = '1'
|
|
conf['swift_store_user'] = 'user'
|
|
return conf
|
|
|
|
def setUp(self):
|
|
"""Establish a clean test environment"""
|
|
conf = self.getConfig()
|
|
self.config(**conf)
|
|
super(TestStoreAuthV1, self).setUp()
|
|
self.stubs = stubout.StubOutForTesting()
|
|
stub_out_swiftclient(self.stubs, conf['swift_store_auth_version'])
|
|
self.store = Store()
|
|
|
|
def tearDown(self):
|
|
"""Clear the test environment"""
|
|
super(TestStoreAuthV1, self).tearDown()
|
|
self.stubs.UnsetAll()
|
|
|
|
|
|
class TestStoreAuthV2(TestStoreAuthV1):
|
|
|
|
def getConfig(self):
|
|
conf = super(TestStoreAuthV2, self).getConfig()
|
|
conf['swift_store_user'] = 'tenant:user'
|
|
conf['swift_store_auth_version'] = '2'
|
|
return conf
|
|
|
|
def test_v2_with_no_tenant(self):
|
|
conf = self.getConfig()
|
|
conf['swift_store_user'] = 'failme'
|
|
uri = "swift://%s:key@auth_address/glance/%s" % (
|
|
conf['swift_store_user'], FAKE_UUID)
|
|
loc = get_location_from_uri(uri)
|
|
self.assertRaises(exception.BadStoreUri,
|
|
self.store.get,
|
|
loc)
|
|
|
|
def test_v2_multi_tenant_location(self):
|
|
conf = self.getConfig()
|
|
conf['swift_store_multi_tenant'] = True
|
|
uri = "swift://auth_address/glance/%s" % (FAKE_UUID)
|
|
loc = get_location_from_uri(uri)
|
|
self.assertEqual('swift', loc.store_name)
|
|
|
|
|
|
class TestChunkReader(base.StoreClearingUnitTest):
|
|
|
|
def test_read_all_data(self):
|
|
"""
|
|
Replicate what goes on in the Swift driver with the
|
|
repeated creation of the ChunkReader object
|
|
"""
|
|
CHUNKSIZE = 100
|
|
checksum = hashlib.md5()
|
|
data_file = tempfile.NamedTemporaryFile()
|
|
data_file.write('*' * 1024)
|
|
data_file.flush()
|
|
infile = open(data_file.name, 'rb')
|
|
bytes_read = 0
|
|
while True:
|
|
cr = glance.store.swift.ChunkReader(infile, checksum, CHUNKSIZE)
|
|
chunk = cr.read(CHUNKSIZE)
|
|
bytes_read += len(chunk)
|
|
if len(chunk) == 0:
|
|
break
|
|
self.assertEqual(1024, bytes_read)
|
|
data_file.close()
|