openstack/placement
Code Issues Proposed changes
e604d87665
placement/nova/tests/fixtures.py
Matt Riedemann aa1ddf24bd Replace messaging.get_transport with get_rpc_transport 
The get_transport method was deprecated in the oslo.messaging
5.24.2 release in favor of get_rpc_transport and
get_notification_transport. We are already using get_notification_transport,
we just need to change to use get_rpc_transport.

Change-Id: Ie276fedef35f411cafbaf25c2148fea42ae01410
2017-06-05 15:05:29 -04:00

1454 lines
54 KiB
Python
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# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""Fixtures for Nova tests."""
from __future__ import absolute_import
import collections
from contextlib import contextmanager
import logging as std_logging
import os
import warnings
import fixtures
from keystoneauth1 import session as ks
import mock
from oslo_concurrency import lockutils
from oslo_config import cfg
import oslo_messaging as messaging
from oslo_messaging import conffixture as messaging_conffixture
from nova.api.openstack.placement import deploy as placement_deploy
from nova.compute import rpcapi as compute_rpcapi
from nova import context
from nova.db import migration
from nova.db.sqlalchemy import api as session
from nova import exception
from nova.network import model as network_model
from nova import objects
from nova.objects import base as obj_base
from nova.objects import service as service_obj
from nova import rpc
from nova import service
from nova.tests.functional.api import client
from nova.tests import uuidsentinel
from nova import wsgi
_TRUE_VALUES = ('True', 'true', '1', 'yes')
CONF = cfg.CONF
DB_SCHEMA = {'main': "", 'api': ""}
SESSION_CONFIGURED = False
class ServiceFixture(fixtures.Fixture):
"""Run a service as a test fixture."""
def __init__(self, name, host=None, **kwargs):
name = name
# If not otherwise specified, the host will default to the
# name of the service. Some things like aggregates care that
# this is stable.
host = host or name
kwargs.setdefault('host', host)
kwargs.setdefault('binary', 'nova-%s' % name)
self.kwargs = kwargs
def setUp(self):
super(ServiceFixture, self).setUp()
self.service = service.Service.create(**self.kwargs)
self.service.start()
self.addCleanup(self.service.kill)
class NullHandler(std_logging.Handler):
"""custom default NullHandler to attempt to format the record.
Used in conjunction with
log_fixture.get_logging_handle_error_fixture to detect formatting errors in
debug level logs without saving the logs.
"""
def handle(self, record):
self.format(record)
def emit(self, record):
pass
def createLock(self):
self.lock = None
class StandardLogging(fixtures.Fixture):
"""Setup Logging redirection for tests.
There are a number of things we want to handle with logging in tests:
* Redirect the logging to somewhere that we can test or dump it later.
* Ensure that as many DEBUG messages as possible are actually
executed, to ensure they are actually syntactically valid (they
often have not been).
* Ensure that we create useful output for tests that doesn't
overwhelm the testing system (which means we can't capture the
100 MB of debug logging on every run).
To do this we create a logger fixture at the root level, which
defaults to INFO and create a Null Logger at DEBUG which lets
us execute log messages at DEBUG but not keep the output.
To support local debugging OS_DEBUG=True can be set in the
environment, which will print out the full debug logging.
There are also a set of overrides for particularly verbose
modules to be even less than INFO.
"""
def setUp(self):
super(StandardLogging, self).setUp()
# set root logger to debug
root = std_logging.getLogger()
root.setLevel(std_logging.DEBUG)
# supports collecting debug level for local runs
if os.environ.get('OS_DEBUG') in _TRUE_VALUES:
level = std_logging.DEBUG
else:
level = std_logging.INFO
# Collect logs
fs = '%(asctime)s %(levelname)s [%(name)s] %(message)s'
self.logger = self.useFixture(
fixtures.FakeLogger(format=fs, level=None))
# TODO(sdague): why can't we send level through the fake
# logger? Tests prove that it breaks, but it's worth getting
# to the bottom of.
root.handlers[0].setLevel(level)
if level > std_logging.DEBUG:
# Just attempt to format debug level logs, but don't save them
handler = NullHandler()
self.useFixture(fixtures.LogHandler(handler, nuke_handlers=False))
handler.setLevel(std_logging.DEBUG)
# Don't log every single DB migration step
std_logging.getLogger(
'migrate.versioning.api').setLevel(std_logging.WARNING)
# At times we end up calling back into main() functions in
# testing. This has the possibility of calling logging.setup
# again, which completely unwinds the logging capture we've
# created here. Once we've setup the logging the way we want,
# disable the ability for the test to change this.
def fake_logging_setup(*args):
pass
self.useFixture(
fixtures.MonkeyPatch('oslo_log.log.setup', fake_logging_setup))
class OutputStreamCapture(fixtures.Fixture):
"""Capture output streams during tests.
This fixture captures errant printing to stderr / stdout during
the tests and lets us see those streams at the end of the test
runs instead. Useful to see what was happening during failed
tests.
"""
def setUp(self):
super(OutputStreamCapture, self).setUp()
if os.environ.get('OS_STDOUT_CAPTURE') in _TRUE_VALUES:
self.out = self.useFixture(fixtures.StringStream('stdout'))
self.useFixture(
fixtures.MonkeyPatch('sys.stdout', self.out.stream))
if os.environ.get('OS_STDERR_CAPTURE') in _TRUE_VALUES:
self.err = self.useFixture(fixtures.StringStream('stderr'))
self.useFixture(
fixtures.MonkeyPatch('sys.stderr', self.err.stream))
@property
def stderr(self):
return self.err._details["stderr"].as_text()
@property
def stdout(self):
return self.out._details["stdout"].as_text()
class Timeout(fixtures.Fixture):
"""Setup per test timeouts.
In order to avoid test deadlocks we support setting up a test
timeout parameter read from the environment. In almost all
cases where the timeout is reached this means a deadlock.
A class level TIMEOUT_SCALING_FACTOR also exists, which allows
extremely long tests to specify they need more time.
"""
def __init__(self, timeout, scaling=1):
super(Timeout, self).__init__()
try:
self.test_timeout = int(timeout)
except ValueError:
# If timeout value is invalid do not set a timeout.
self.test_timeout = 0
if scaling >= 1:
self.test_timeout *= scaling
else:
raise ValueError('scaling value must be >= 1')
def setUp(self):
super(Timeout, self).setUp()
if self.test_timeout > 0:
self.useFixture(fixtures.Timeout(self.test_timeout, gentle=True))
class DatabasePoisonFixture(fixtures.Fixture):
def setUp(self):
super(DatabasePoisonFixture, self).setUp()
self.useFixture(fixtures.MonkeyPatch(
'oslo_db.sqlalchemy.enginefacade._TransactionFactory.'
'_create_session',
self._poison_configure))
def _poison_configure(self, *a, **k):
# If you encounter this error, you might be tempted to just not
# inherit from NoDBTestCase. Bug #1568414 fixed a few hundred of these
# errors, and not once was that the correct solution. Instead,
# consider some of the following tips (when applicable):
#
# - mock at the object layer rather than the db layer, for example:
# nova.objects.instance.Instance.get
# vs.
# nova.db.instance_get
#
# - mock at the api layer rather than the object layer, for example:
# nova.api.openstack.common.get_instance
# vs.
# nova.objects.instance.Instance.get
#
# - mock code that requires the database but is otherwise tangential
# to the code you're testing (for example: EventReporterStub)
#
# - peruse some of the other database poison warning fixes here:
# https://review.openstack.org/#/q/topic:bug/1568414
raise Exception('This test uses methods that set internal oslo_db '
'state, but it does not claim to use the database. '
'This will conflict with the setup of tests that '
'do use the database and cause failures later.')
class SingleCellSimple(fixtures.Fixture):
"""Setup the simplest cells environment possible
This should be used when you do not care about multiple cells,
or having a "real" environment for tests that should not care.
This will give you a single cell, and map any and all accesses
to that cell (even things that would go to cell0).
If you need to distinguish between cell0 and cellN, then you
should use the CellDatabases fixture.
If instances should appear to still be in scheduling state, pass
instances_created=False to init.
"""
def __init__(self, instances_created=True):
self.instances_created = instances_created
def setUp(self):
super(SingleCellSimple, self).setUp()
self.useFixture(fixtures.MonkeyPatch(
'nova.objects.CellMappingList._get_all_from_db',
self._fake_cell_list))
self.useFixture(fixtures.MonkeyPatch(
'nova.objects.CellMapping._get_by_uuid_from_db',
self._fake_cell_get))
self.useFixture(fixtures.MonkeyPatch(
'nova.objects.HostMapping._get_by_host_from_db',
self._fake_hostmapping_get))
self.useFixture(fixtures.MonkeyPatch(
'nova.objects.InstanceMapping._get_by_instance_uuid_from_db',
self._fake_instancemapping_get))
self.useFixture(fixtures.MonkeyPatch(
'nova.objects.InstanceMapping._save_in_db',
self._fake_instancemapping_get))
self.useFixture(fixtures.MonkeyPatch(
'nova.context.target_cell',
self._fake_target_cell))
self.useFixture(fixtures.MonkeyPatch(
'nova.context.set_target_cell',
lambda c, m: None))
def _fake_hostmapping_get(self, *args):
return {'id': 1,
'updated_at': None,
'created_at': None,
'host': 'host1',
'cell_mapping': self._fake_cell_list()[0]}
def _fake_instancemapping_get(self, *args):
return {
'id': 1,
'updated_at': None,
'created_at': None,
'instance_uuid': uuidsentinel.instance,
'cell_id': (self.instances_created and 1 or None),
'project_id': 'project',
'cell_mapping': (
self.instances_created and self._fake_cell_get() or None),
}
def _fake_cell_get(self, *args):
return self._fake_cell_list()[0]
def _fake_cell_list(self, *args):
return [{'id': 1,
'updated_at': None,
'created_at': None,
'uuid': uuidsentinel.cell1,
'name': 'onlycell',
'transport_url': 'fake://nowhere/',
'database_connection': 'sqlite:///'}]
@contextmanager
def _fake_target_cell(self, context, target_cell):
# NOTE(danms): Just pass through the context without actually
# targeting anything.
yield context
class CheatingSerializer(rpc.RequestContextSerializer):
"""A messaging.RequestContextSerializer that helps with cells.
Our normal serializer does not pass in the context like db_connection
and mq_connection, for good reason. We don't really want/need to
force a remote RPC server to use our values for this. However,
during unit and functional tests, since we're all in the same
process, we want cell-targeted RPC calls to preserve these values.
Unless we had per-service config and database layer state for
the fake services we start, this is a reasonable cheat.
"""
def serialize_context(self, context):
"""Serialize context with the db_connection inside."""
values = super(CheatingSerializer, self).serialize_context(context)
values['db_connection'] = context.db_connection
values['mq_connection'] = context.mq_connection
return values
def deserialize_context(self, values):
"""Deserialize context and honor db_connection if present."""
ctxt = super(CheatingSerializer, self).deserialize_context(values)
ctxt.db_connection = values.pop('db_connection', None)
ctxt.mq_connection = values.pop('mq_connection', None)
return ctxt
class CellDatabases(fixtures.Fixture):
"""Create per-cell databases for testing.
How to use::
fix = CellDatabases()
fix.add_cell_database('connection1')
fix.add_cell_database('connection2', default=True)
self.useFixture(fix)
Passing default=True tells the fixture which database should
be given to code that doesn't target a specific cell.
"""
def __init__(self):
self._ctxt_mgrs = {}
self._last_ctxt_mgr = None
self._default_ctxt_mgr = None
# NOTE(danms): Use a ReaderWriterLock to synchronize our
# global database muckery here. If we change global db state
# to point to a cell, we need to take an exclusive lock to
# prevent any other calls to get_context_manager() until we
# reset to the default.
self._cell_lock = lockutils.ReaderWriterLock()
def _cache_schema(self, connection_str):
# NOTE(melwitt): See the regular Database fixture for why
# we do this.
global DB_SCHEMA
if not DB_SCHEMA['main']:
ctxt_mgr = self._ctxt_mgrs[connection_str]
engine = ctxt_mgr.get_legacy_facade().get_engine()
conn = engine.connect()
migration.db_sync(database='main')
DB_SCHEMA['main'] = "".join(line for line
in conn.connection.iterdump())
engine.dispose()
@contextmanager
def _wrap_target_cell(self, context, cell_mapping):
with self._cell_lock.write_lock():
if cell_mapping is None:
# NOTE(danms): The real target_cell untargets with a
# cell_mapping of None. Since we're controlling our
# own targeting in this fixture, we need to call this out
# specifically and avoid switching global database state
try:
with self._real_target_cell(context, cell_mapping) as c:
yield c
finally:
return
ctxt_mgr = self._ctxt_mgrs[cell_mapping.database_connection]
# This assumes the next local DB access is the same cell that
# was targeted last time.
self._last_ctxt_mgr = ctxt_mgr
try:
with self._real_target_cell(context, cell_mapping) as ccontext:
yield ccontext
finally:
# Once we have returned from the context, we need
# to restore the default context manager for any
# subsequent calls
self._last_ctxt_mgr = self._default_ctxt_mgr
def _wrap_create_context_manager(self, connection=None):
ctxt_mgr = self._ctxt_mgrs[connection]
return ctxt_mgr
def _wrap_get_context_manager(self, context):
try:
# If already targeted, we can proceed without a lock
if context.db_connection:
return context.db_connection
except AttributeError:
# Unit tests with None, FakeContext, etc
pass
# NOTE(melwitt): This is a hack to try to deal with
# local accesses i.e. non target_cell accesses.
with self._cell_lock.read_lock():
return self._last_ctxt_mgr
def _wrap_get_server(self, target, endpoints, serializer=None):
"""Mirror rpc.get_server() but with our special sauce."""
serializer = CheatingSerializer(serializer)
return messaging.get_rpc_server(rpc.TRANSPORT,
target,
endpoints,
executor='eventlet',
serializer=serializer)
def _wrap_get_client(self, target, version_cap=None, serializer=None):
"""Mirror rpc.get_client() but with our special sauce."""
serializer = CheatingSerializer(serializer)
return messaging.RPCClient(rpc.TRANSPORT,
target,
version_cap=version_cap,
serializer=serializer)
def add_cell_database(self, connection_str, default=False):
"""Add a cell database to the fixture.
:param connection_str: An identifier used to represent the connection
string for this database. It should match the database_connection field
in the corresponding CellMapping.
"""
# NOTE(danms): Create a new context manager for the cell, which
# will house the sqlite:// connection for this cell's in-memory
# database. Store/index it by the connection string, which is
# how we identify cells in CellMapping.
ctxt_mgr = session.create_context_manager()
self._ctxt_mgrs[connection_str] = ctxt_mgr
# NOTE(melwitt): The first DB access through service start is
# local so this initializes _last_ctxt_mgr for that and needs
# to be a compute cell.
self._last_ctxt_mgr = ctxt_mgr
# NOTE(danms): Record which context manager should be the default
# so we can restore it when we return from target-cell contexts.
# If none has been provided yet, store the current one in case
# no default is ever specified.
if self._default_ctxt_mgr is None or default:
self._default_ctxt_mgr = ctxt_mgr
def get_context_manager(context):
return ctxt_mgr
# NOTE(danms): This is a temporary MonkeyPatch just to get
# a new database created with the schema we need and the
# context manager for it stashed.
with fixtures.MonkeyPatch(
'nova.db.sqlalchemy.api.get_context_manager',
get_context_manager):
self._cache_schema(connection_str)
engine = ctxt_mgr.get_legacy_facade().get_engine()
engine.dispose()
conn = engine.connect()
conn.connection.executescript(DB_SCHEMA['main'])
def setUp(self):
super(CellDatabases, self).setUp()
self.addCleanup(self.cleanup)
self._real_target_cell = context.target_cell
# NOTE(danms): These context managers are in place for the
# duration of the test (unlike the temporary ones above) and
# provide the actual "runtime" switching of connections for us.
self.useFixture(fixtures.MonkeyPatch(
'nova.db.sqlalchemy.api.create_context_manager',
self._wrap_create_context_manager))
self.useFixture(fixtures.MonkeyPatch(
'nova.db.sqlalchemy.api.get_context_manager',
self._wrap_get_context_manager))
self.useFixture(fixtures.MonkeyPatch(
'nova.context.target_cell',
self._wrap_target_cell))
self.useFixture(fixtures.MonkeyPatch(
'nova.rpc.get_server',
self._wrap_get_server))
self.useFixture(fixtures.MonkeyPatch(
'nova.rpc.get_client',
self._wrap_get_client))
def cleanup(self):
for ctxt_mgr in self._ctxt_mgrs.values():
engine = ctxt_mgr.get_legacy_facade().get_engine()
engine.dispose()
class Database(fixtures.Fixture):
def __init__(self, database='main', connection=None):
"""Create a database fixture.
:param database: The type of database, 'main' or 'api'
:param connection: The connection string to use
"""
super(Database, self).__init__()
# NOTE(pkholkin): oslo_db.enginefacade is configured in tests the same
# way as it is done for any other service that uses db
global SESSION_CONFIGURED
if not SESSION_CONFIGURED:
session.configure(CONF)
SESSION_CONFIGURED = True
self.database = database
if database == 'main':
if connection is not None:
ctxt_mgr = session.create_context_manager(
connection=connection)
facade = ctxt_mgr.get_legacy_facade()
self.get_engine = facade.get_engine
else:
self.get_engine = session.get_engine
elif database == 'api':
self.get_engine = session.get_api_engine
def _cache_schema(self):
global DB_SCHEMA
if not DB_SCHEMA[self.database]:
engine = self.get_engine()
conn = engine.connect()
migration.db_sync(database=self.database)
DB_SCHEMA[self.database] = "".join(line for line
in conn.connection.iterdump())
engine.dispose()
def cleanup(self):
engine = self.get_engine()
engine.dispose()
def reset(self):
self._cache_schema()
engine = self.get_engine()
engine.dispose()
conn = engine.connect()
conn.connection.executescript(DB_SCHEMA[self.database])
def setUp(self):
super(Database, self).setUp()
self.reset()
self.addCleanup(self.cleanup)
class DatabaseAtVersion(fixtures.Fixture):
def __init__(self, version, database='main'):
"""Create a database fixture.
:param version: Max version to sync to (or None for current)
:param database: The type of database, 'main' or 'api'
"""
super(DatabaseAtVersion, self).__init__()
self.database = database
self.version = version
if database == 'main':
self.get_engine = session.get_engine
elif database == 'api':
self.get_engine = session.get_api_engine
def cleanup(self):
engine = self.get_engine()
engine.dispose()
def reset(self):
engine = self.get_engine()
engine.dispose()
engine.connect()
migration.db_sync(version=self.version, database=self.database)
def setUp(self):
super(DatabaseAtVersion, self).setUp()
self.reset()
self.addCleanup(self.cleanup)
class DefaultFlavorsFixture(fixtures.Fixture):
def setUp(self):
super(DefaultFlavorsFixture, self).setUp()
ctxt = context.get_admin_context()
defaults = {'rxtx_factor': 1.0, 'disabled': False, 'is_public': True,
'ephemeral_gb': 0, 'swap': 0}
extra_specs = {
"hw:cpu_model": "SandyBridge",
"hw:mem_page_size": "2048",
"hw:cpu_policy": "dedicated"
}
default_flavors = [
objects.Flavor(context=ctxt, memory_mb=512, vcpus=1,
root_gb=1, flavorid='1', name='m1.tiny',
**defaults),
objects.Flavor(context=ctxt, memory_mb=2048, vcpus=1,
root_gb=20, flavorid='2', name='m1.small',
**defaults),
objects.Flavor(context=ctxt, memory_mb=4096, vcpus=2,
root_gb=40, flavorid='3', name='m1.medium',
**defaults),
objects.Flavor(context=ctxt, memory_mb=8192, vcpus=4,
root_gb=80, flavorid='4', name='m1.large',
**defaults),
objects.Flavor(context=ctxt, memory_mb=16384, vcpus=8,
root_gb=160, flavorid='5', name='m1.xlarge',
**defaults),
objects.Flavor(context=ctxt, memory_mb=512, vcpus=1,
root_gb=1, flavorid='6', name='m1.tiny.specs',
extra_specs=extra_specs, **defaults),
]
for flavor in default_flavors:
flavor.create()
class RPCFixture(fixtures.Fixture):
def __init__(self, *exmods):
super(RPCFixture, self).__init__()
self.exmods = []
self.exmods.extend(exmods)
self._buses = {}
def _fake_create_transport(self, url):
# FIXME(danms): Right now, collapse all connections
# to a single bus. This is how our tests expect things
# to work. When the tests are fixed, this fixture can
# support simulating multiple independent buses, and this
# hack should be removed.
url = None
# NOTE(danms): This will be called with a non-None url by
# cells-aware code that is requesting to contact something on
# one of the many transports we're multplexing here.
if url not in self._buses:
exmods = rpc.get_allowed_exmods()
self._buses[url] = messaging.get_rpc_transport(
CONF,
url=url,
allowed_remote_exmods=exmods)
return self._buses[url]
def setUp(self):
super(RPCFixture, self).setUp()
self.addCleanup(rpc.cleanup)
rpc.add_extra_exmods(*self.exmods)
self.addCleanup(rpc.clear_extra_exmods)
self.messaging_conf = messaging_conffixture.ConfFixture(CONF)
self.messaging_conf.transport_driver = 'fake'
self.useFixture(self.messaging_conf)
self.useFixture(fixtures.MonkeyPatch(
'nova.rpc.create_transport', self._fake_create_transport))
# NOTE(danms): Execute the init with get_transport_url() as None,
# instead of the parsed TransportURL(None) so that we can cache
# it as it will be called later if the default is requested by
# one of our mq-switching methods.
with mock.patch('nova.rpc.get_transport_url') as mock_gtu:
mock_gtu.return_value = None
rpc.init(CONF)
class WarningsFixture(fixtures.Fixture):
"""Filters out warnings during test runs."""
def setUp(self):
super(WarningsFixture, self).setUp()
# NOTE(sdague): Make deprecation warnings only happen once. Otherwise
# this gets kind of crazy given the way that upstream python libs use
# this.
warnings.simplefilter("once", DeprecationWarning)
warnings.filterwarnings('ignore',
message='With-statements now directly support'
' multiple context managers')
self.addCleanup(warnings.resetwarnings)
class ConfPatcher(fixtures.Fixture):
"""Fixture to patch and restore global CONF.
This also resets overrides for everything that is patched during
it's teardown.
"""
def __init__(self, **kwargs):
"""Constructor
:params group: if specified all config options apply to that group.
:params **kwargs: the rest of the kwargs are processed as a
set of key/value pairs to be set as configuration override.
"""
super(ConfPatcher, self).__init__()
self.group = kwargs.pop('group', None)
self.args = kwargs
def setUp(self):
super(ConfPatcher, self).setUp()
for k, v in self.args.items():
self.addCleanup(CONF.clear_override, k, self.group)
CONF.set_override(k, v, self.group)
class OSAPIFixture(fixtures.Fixture):
"""Create an OS API server as a fixture.
This spawns an OS API server as a fixture in a new greenthread in
the current test. The fixture has a .api parameter with is a
simple rest client that can communicate with it.
This fixture is extremely useful for testing REST responses
through the WSGI stack easily in functional tests.
Usage:
api = self.useFixture(fixtures.OSAPIFixture()).api
resp = api.api_request('/someurl')
self.assertEqual(200, resp.status_code)
resp = api.api_request('/otherurl', method='POST', body='{foo}')
The resp is a requests library response. Common attributes that
you'll want to use are:
- resp.status_code - integer HTTP status code returned by the request
- resp.content - the body of the response
- resp.headers - dictionary of HTTP headers returned
"""
def __init__(self, api_version='v2',
project_id='6f70656e737461636b20342065766572'):
"""Constructor
:param api_version: the API version that we're interested in
using. Currently this expects 'v2' or 'v2.1' as possible
options.
:param project_id: the project id to use on the API.
"""
super(OSAPIFixture, self).__init__()
self.api_version = api_version
self.project_id = project_id
def setUp(self):
super(OSAPIFixture, self).setUp()
# in order to run these in tests we need to bind only to local
# host, and dynamically allocate ports
conf_overrides = {
'osapi_compute_listen': '127.0.0.1',
'osapi_compute_listen_port': 0,
'debug': True,
}
self.useFixture(ConfPatcher(**conf_overrides))
self.osapi = service.WSGIService("osapi_compute")
self.osapi.start()
self.addCleanup(self.osapi.stop)
self.auth_url = 'http://%(host)s:%(port)s/%(api_version)s' % ({
'host': self.osapi.host, 'port': self.osapi.port,
'api_version': self.api_version})
self.api = client.TestOpenStackClient('fake', 'fake', self.auth_url,
self.project_id)
self.admin_api = client.TestOpenStackClient(
'admin', 'admin', self.auth_url, self.project_id)
class OSMetadataServer(fixtures.Fixture):
"""Create an OS Metadata API server as a fixture.
This spawns an OS Metadata API server as a fixture in a new
greenthread in the current test.
TODO(sdague): ideally for testing we'd have something like the
test client which acts like requests, but connects any of the
interactions needed.
"""
def setUp(self):
super(OSMetadataServer, self).setUp()
# in order to run these in tests we need to bind only to local
# host, and dynamically allocate ports
conf_overrides = {
'metadata_listen': '127.0.0.1',
'metadata_listen_port': 0,
'debug': True
}
self.useFixture(ConfPatcher(**conf_overrides))
# NOTE(mikal): we don't have root to manipulate iptables, so just
# zero that bit out.
self.useFixture(fixtures.MonkeyPatch(
'nova.network.linux_net.IptablesManager._apply',
lambda _: None))
self.metadata = service.WSGIService("metadata")
self.metadata.start()
self.addCleanup(self.metadata.stop)
self.md_url = "http://%s:%s/" % (
conf_overrides['metadata_listen'],
self.metadata.port)
class PoisonFunctions(fixtures.Fixture):
"""Poison functions so they explode if we touch them.
When running under a non full stack test harness there are parts
of the code that you don't want to go anywhere near. These include
things like code that spins up extra threads, which just
introduces races.
"""
def setUp(self):
super(PoisonFunctions, self).setUp()
# The nova libvirt driver starts an event thread which only
# causes trouble in tests. Make sure that if tests don't
# properly patch it the test explodes.
# explicit import because MonkeyPatch doesn't magic import
# correctly if we are patching a method on a class in a
# module.
import nova.virt.libvirt.host # noqa
def evloop(*args, **kwargs):
import sys
warnings.warn("Forgot to disable libvirt event thread")
sys.exit(1)
self.useFixture(fixtures.MonkeyPatch(
'nova.virt.libvirt.host.Host._init_events',
evloop))
class IndirectionAPIFixture(fixtures.Fixture):
"""Patch and restore the global NovaObject indirection api."""
def __init__(self, indirection_api):
"""Constructor
:param indirection_api: the indirection API to be used for tests.
"""
super(IndirectionAPIFixture, self).__init__()
self.indirection_api = indirection_api
def cleanup(self):
obj_base.NovaObject.indirection_api = self.orig_indirection_api
def setUp(self):
super(IndirectionAPIFixture, self).setUp()
self.orig_indirection_api = obj_base.NovaObject.indirection_api
obj_base.NovaObject.indirection_api = self.indirection_api
self.addCleanup(self.cleanup)
class _FakeGreenThread(object):
def __init__(self, func, *args, **kwargs):
self._result = func(*args, **kwargs)
def cancel(self, *args, **kwargs):
# This method doesn't make sense for a synchronous call, it's just
# defined to satisfy the interface.
pass
def kill(self, *args, **kwargs):
# This method doesn't make sense for a synchronous call, it's just
# defined to satisfy the interface.
pass
def link(self, func, *args, **kwargs):
func(self, *args, **kwargs)
def unlink(self, func, *args, **kwargs):
# This method doesn't make sense for a synchronous call, it's just
# defined to satisfy the interface.
pass
def wait(self):
return self._result
class SpawnIsSynchronousFixture(fixtures.Fixture):
"""Patch and restore the spawn_n utility method to be synchronous"""
def setUp(self):
super(SpawnIsSynchronousFixture, self).setUp()
self.useFixture(fixtures.MonkeyPatch(
'nova.utils.spawn_n', _FakeGreenThread))
self.useFixture(fixtures.MonkeyPatch(
'nova.utils.spawn', _FakeGreenThread))
class BannedDBSchemaOperations(fixtures.Fixture):
"""Ban some operations for migrations"""
def __init__(self, banned_resources=None):
super(BannedDBSchemaOperations, self).__init__()
self._banned_resources = banned_resources or []
@staticmethod
def _explode(resource, op):
raise exception.DBNotAllowed(
'Operation %s.%s() is not allowed in a database migration' % (
resource, op))
def setUp(self):
super(BannedDBSchemaOperations, self).setUp()
for thing in self._banned_resources:
self.useFixture(fixtures.MonkeyPatch(
'sqlalchemy.%s.drop' % thing,
lambda *a, **k: self._explode(thing, 'drop')))
self.useFixture(fixtures.MonkeyPatch(
'sqlalchemy.%s.alter' % thing,
lambda *a, **k: self._explode(thing, 'alter')))
class ForbidNewLegacyNotificationFixture(fixtures.Fixture):
"""Make sure the test fails if new legacy notification is added"""
def __init__(self):
super(ForbidNewLegacyNotificationFixture, self).__init__()
self.notifier = rpc.LegacyValidatingNotifier
def setUp(self):
super(ForbidNewLegacyNotificationFixture, self).setUp()
self.notifier.fatal = True
# allow the special test value used in
# nova.tests.unit.test_notifications.NotificationsTestCase
self.notifier.allowed_legacy_notification_event_types.append(
'_decorated_function')
self.addCleanup(self.cleanup)
def cleanup(self):
self.notifier.fatal = False
self.notifier.allowed_legacy_notification_event_types.remove(
'_decorated_function')
class AllServicesCurrent(fixtures.Fixture):
def setUp(self):
super(AllServicesCurrent, self).setUp()
self.useFixture(fixtures.MonkeyPatch(
'nova.objects.Service.get_minimum_version_multi',
self._fake_minimum))
compute_rpcapi.LAST_VERSION = None
def _fake_minimum(self, *args, **kwargs):
return service_obj.SERVICE_VERSION
class NeutronFixture(fixtures.Fixture):
"""A fixture to boot instances with neutron ports"""
# the default project_id in OsaAPIFixtures
tenant_id = '6f70656e737461636b20342065766572'
network_1 = {
'status': 'ACTIVE',
'subnets': [],
'name': 'private-network',
'admin_state_up': True,
'tenant_id': tenant_id,
'id': '3cb9bc59-5699-4588-a4b1-b87f96708bc6',
}
subnet_1 = {
'name': 'private-subnet',
'enable_dhcp': True,
'network_id': network_1['id'],
'tenant_id': tenant_id,
'dns_nameservers': [],
'allocation_pools': [
{
'start': '192.168.1.1',
'end': '192.168.1.254'
}
],
'host_routes': [],
'ip_version': 4,
'gateway_ip': '192.168.1.1',
'cidr': '192.168.1.1/24',
'id': 'f8a6e8f8-c2ec-497c-9f23-da9616de54ef'
}
network_1['subnets'] = [subnet_1['id']]
port_1 = {
'id': 'ce531f90-199f-48c0-816c-13e38010b442',
'network_id': network_1['id'],
'admin_state_up': True,
'status': 'ACTIVE',
'mac_address': 'fa:16:3e:4c:2c:30',
'fixed_ips': [
{
# The IP on this port must be a prefix of the IP on port_2 to
# test listing servers with an ip filter regex.
'ip_address': '192.168.1.3',
'subnet_id': subnet_1['id']
}
],
'tenant_id': tenant_id
}
# This port is only used if the fixture is created with multiple_ports=True
port_2 = {
'id': '88dae9fa-0dc6-49e3-8c29-3abc41e99ac9',
'network_id': network_1['id'],
'admin_state_up': True,
'status': 'ACTIVE',
'mac_address': '00:0c:29:0d:11:74',
'fixed_ips': [
{
'ip_address': '192.168.1.30',
'subnet_id': subnet_1['id']
}
],
'tenant_id': tenant_id
}
nw_info = [{
"profile": {},
"ovs_interfaceid": "b71f1699-42be-4515-930a-f3ef01f94aa7",
"preserve_on_delete": False,
"network": {
"bridge": "br-int",
"subnets": [{
"ips": [{
"meta": {},
"version": 4,
"type": "fixed",
"floating_ips": [],
"address": "10.0.0.4"
}],
"version": 4,
"meta": {},
"dns": [],
"routes": [],
"cidr": "10.0.0.0/26",
"gateway": {
"meta": {},
"version": 4,
"type": "gateway",
"address": "10.0.0.1"
}
}],
"meta": {
"injected": False,
"tenant_id": tenant_id,
"mtu": 1500
},
"id": "e1882e38-38c2-4239-ade7-35d644cb963a",
"label": "public"
},
"devname": "tapb71f1699-42",
"vnic_type": "normal",
"qbh_params": None,
"meta": {},
"details": {
"port_filter": True,
"ovs_hybrid_plug": True
},
"address": "fa:16:3e:47:94:4a",
"active": True,
"type": "ovs",
"id": "b71f1699-42be-4515-930a-f3ef01f94aa7",
"qbg_params": None
}]
def __init__(self, test, multiple_ports=False):
super(NeutronFixture, self).__init__()
self.test = test
self.multiple_ports = multiple_ports
def setUp(self):
super(NeutronFixture, self).setUp()
self.test.stub_out(
'nova.network.neutronv2.api.API.'
'validate_networks',
lambda *args, **kwargs: 1)
self.test.stub_out(
'nova.network.neutronv2.api.API.'
'create_pci_requests_for_sriov_ports',
lambda *args, **kwargs: None)
self.test.stub_out(
'nova.network.neutronv2.api.API.setup_networks_on_host',
lambda *args, **kwargs: None)
self.test.stub_out(
'nova.network.neutronv2.api.API.migrate_instance_start',
lambda *args, **kwargs: None)
self.test.stub_out(
'nova.network.neutronv2.api.API.add_fixed_ip_to_instance',
lambda *args, **kwargs: network_model.NetworkInfo.hydrate(
NeutronFixture.nw_info))
self.test.stub_out(
'nova.network.neutronv2.api.API.remove_fixed_ip_from_instance',
lambda *args, **kwargs: network_model.NetworkInfo.hydrate(
NeutronFixture.nw_info))
self.test.stub_out(
'nova.network.neutronv2.api.API.migrate_instance_finish',
lambda *args, **kwargs: None)
self.test.stub_out(
'nova.network.security_group.neutron_driver.SecurityGroupAPI.'
'get_instances_security_groups_bindings',
lambda *args, **kwargs: {})
mock_neutron_client = mock.Mock()
mock_neutron_client.list_extensions.return_value = {'extensions': []}
def stub_show_port(port_id, *args, **kwargs):
if port_id == NeutronFixture.port_1['id']:
return {'port': NeutronFixture.port_1}
if port_id == NeutronFixture.port_2['id']:
return {'port': NeutronFixture.port_2}
raise exception.PortNotFound(port_id=port_id)
mock_neutron_client.show_port.side_effect = stub_show_port
mock_neutron_client.list_networks.return_value = {
'networks': [NeutronFixture.network_1]}
def stub_list_ports(*args, **kwargs):
ports = {'ports': [NeutronFixture.port_1]}
if self.multiple_ports:
ports['ports'].append(NeutronFixture.port_2)
return ports
mock_neutron_client.list_ports.side_effect = stub_list_ports
mock_neutron_client.list_subnets.return_value = {
'subnets': [NeutronFixture.subnet_1]}
mock_neutron_client.list_floatingips.return_value = {'floatingips': []}
mock_neutron_client.update_port.side_effect = stub_show_port
self.test.stub_out(
'nova.network.neutronv2.api.get_client',
lambda *args, **kwargs: mock_neutron_client)
class _NoopConductor(object):
def __getattr__(self, key):
def _noop_rpc(*args, **kwargs):
return None
return _noop_rpc
class NoopConductorFixture(fixtures.Fixture):
"""Stub out the conductor API to do nothing"""
def setUp(self):
super(NoopConductorFixture, self).setUp()
self.useFixture(fixtures.MonkeyPatch(
'nova.conductor.ComputeTaskAPI', _NoopConductor))
self.useFixture(fixtures.MonkeyPatch(
'nova.conductor.API', _NoopConductor))
class EventReporterStub(fixtures.Fixture):
def setUp(self):
super(EventReporterStub, self).setUp()
self.useFixture(fixtures.MonkeyPatch(
'nova.compute.utils.EventReporter',
lambda *args, **kwargs: mock.MagicMock()))
class CinderFixture(fixtures.Fixture):
"""A fixture to volume operations"""
# the default project_id in OSAPIFixtures
tenant_id = '6f70656e737461636b20342065766572'
SWAP_OLD_VOL = 'a07f71dc-8151-4e7d-a0cc-cd24a3f11113'
SWAP_NEW_VOL = '227cc671-f30b-4488-96fd-7d0bf13648d8'
SWAP_ERR_OLD_VOL = '828419fa-3efb-4533-b458-4267ca5fe9b1'
SWAP_ERR_NEW_VOL = '9c6d9c2d-7a8f-4c80-938d-3bf062b8d489'
def __init__(self, test):
super(CinderFixture, self).__init__()
self.test = test
self.swap_error = False
self.swap_volume_instance_uuid = None
self.swap_volume_instance_error_uuid = None
# This is a map of instance UUIDs mapped to a list of volume IDs.
# This map gets updated on attach/detach operations.
self.attachments = collections.defaultdict(list)
def setUp(self):
super(CinderFixture, self).setUp()
def fake_get(self_api, context, volume_id):
# Check for the special swap volumes.
if volume_id in (CinderFixture.SWAP_OLD_VOL,
CinderFixture.SWAP_ERR_OLD_VOL):
volume = {
'status': 'available',
'display_name': 'TEST1',
'attach_status': 'detached',
'id': volume_id,
'size': 1
}
if ((self.swap_volume_instance_uuid and
volume_id == CinderFixture.SWAP_OLD_VOL) or
(self.swap_volume_instance_error_uuid and
volume_id == CinderFixture.SWAP_ERR_OLD_VOL)):
instance_uuid = (self.swap_volume_instance_uuid
if volume_id == CinderFixture.SWAP_OLD_VOL
else self.swap_volume_instance_error_uuid)
volume.update({
'status': 'in-use',
'attachments': {
instance_uuid: {
'mountpoint': '/dev/vdb',
'attachment_id': volume_id
}
},
'attach_status': 'attached'
})
return volume
# Check to see if the volume is attached.
for instance_uuid, volumes in self.attachments.items():
if volume_id in volumes:
# The volume is attached.
return {
'status': 'in-use',
'display_name': volume_id,
'attach_status': 'attached',
'id': volume_id,
'size': 1,
'attachments': {
instance_uuid: {
'attachment_id': volume_id,
'mountpoint': '/dev/vdb'
}
}
}
# This is a test that does not care about the actual details.
return {
'status': 'available',
'display_name': 'TEST2',
'attach_status': 'detached',
'id': volume_id,
'size': 1
}
def fake_initialize_connection(self, context, volume_id, connector):
if volume_id == CinderFixture.SWAP_ERR_NEW_VOL:
# Return a tuple in order to raise an exception.
return ()
return {}
def fake_migrate_volume_completion(self, context, old_volume_id,
new_volume_id, error):
return {'save_volume_id': new_volume_id}
def fake_unreserve_volume(self_api, context, volume_id):
# Signaling that swap_volume has encountered the error
# from initialize_connection and is working on rolling back
# the reservation on SWAP_ERR_NEW_VOL.
self.swap_error = True
def fake_attach(_self, context, volume_id, instance_uuid,
mountpoint, mode='rw'):
# Check to see if the volume is already attached to any server.
for instance, volumes in self.attachments.items():
if volume_id in volumes:
raise exception.InvalidInput(
reason='Volume %s is already attached to '
'instance %s' % (volume_id, instance))
# It's not attached so let's "attach" it.
self.attachments[instance_uuid].append(volume_id)
self.test.stub_out('nova.volume.cinder.API.attach',
fake_attach)
def fake_detach(_self, context, volume_id, instance_uuid=None,
attachment_id=None):
if instance_uuid is not None:
# If the volume isn't attached to this instance it will
# result in a ValueError which indicates a broken test or
# code, so we just let that raise up.
self.attachments[instance_uuid].remove(volume_id)
else:
for instance, volumes in self.attachments.items():
if volume_id in volumes:
volumes.remove(volume_id)
break
self.test.stub_out('nova.volume.cinder.API.detach', fake_detach)
self.test.stub_out('nova.volume.cinder.API.begin_detaching',
lambda *args, **kwargs: None)
self.test.stub_out('nova.volume.cinder.API.check_attach',
lambda *args, **kwargs: None)
self.test.stub_out('nova.volume.cinder.API.check_detach',
lambda *args, **kwargs: None)
self.test.stub_out('nova.volume.cinder.API.get',
fake_get)
self.test.stub_out('nova.volume.cinder.API.initialize_connection',
fake_initialize_connection)
self.test.stub_out(
'nova.volume.cinder.API.migrate_volume_completion',
fake_migrate_volume_completion)
self.test.stub_out('nova.volume.cinder.API.reserve_volume',
lambda *args, **kwargs: None)
self.test.stub_out('nova.volume.cinder.API.roll_detaching',
lambda *args, **kwargs: None)
self.test.stub_out('nova.volume.cinder.API.terminate_connection',
lambda *args, **kwargs: None)
self.test.stub_out('nova.volume.cinder.API.unreserve_volume',
fake_unreserve_volume)
class PlacementFixture(fixtures.Fixture):
"""A fixture to placement operations.
Runs a local WSGI server bound on a free port and having the Placement
application with NoAuth middleware.
This fixture also prevents calling the ServiceCatalog for getting the
endpoint.
It's possible to ask for a specific token when running the fixtures so
all calls would be passing this token.
"""
def __init__(self, token='admin'):
self.token = token
def setUp(self):
super(PlacementFixture, self).setUp()
self.useFixture(ConfPatcher(group='api', auth_strategy='noauth2'))
app = placement_deploy.loadapp(CONF)
# in order to run these in tests we need to bind only to local
# host, and dynamically allocate ports
self.service = wsgi.Server('placement', app, host='127.0.0.1')
self.service.start()
self.addCleanup(self.service.stop)
self._client = ks.Session(auth=None)
# NOTE(sbauza): We need to mock the scheduler report client because
# we need to fake Keystone by directly calling the endpoint instead
# of looking up the service catalog, like we did for the OSAPIFixture.
self.useFixture(fixtures.MonkeyPatch(
'nova.scheduler.client.report.SchedulerReportClient.get',
self._fake_get))
self.useFixture(fixtures.MonkeyPatch(
'nova.scheduler.client.report.SchedulerReportClient.post',
self._fake_post))
self.useFixture(fixtures.MonkeyPatch(
'nova.scheduler.client.report.SchedulerReportClient.put',
self._fake_put))
self.useFixture(fixtures.MonkeyPatch(
'nova.scheduler.client.report.SchedulerReportClient.delete',
self._fake_delete))
def _fake_get(self, *args, **kwargs):
(url,) = args[1:]
version = kwargs.get("version")
# TODO(sbauza): The current placement NoAuthMiddleware returns a 401
# in case a token is not provided. We should change that by creating
# a fake token so we could remove adding the header below.
headers = {'x-auth-token': self.token}
if version is not None:
# TODO(mriedem): Perform some version discovery at some point.
headers.update({
'OpenStack-API-Version': 'placement %s' % version
})
return self._client.get(
url,
endpoint_override="http://127.0.0.1:%s" % self.service.port,
headers=headers,
raise_exc=False)
def _fake_post(self, *args):
(url, data) = args[1:]
# NOTE(sdague): using json= instead of data= sets the
# media type to application/json for us. Placement API is
# more sensitive to this than other APIs in the OpenStack
# ecosystem.
# TODO(sbauza): The current placement NoAuthMiddleware returns a 401
# in case a token is not provided. We should change that by creating
# a fake token so we could remove adding the header below.
return self._client.post(
url, json=data,
endpoint_override="http://127.0.0.1:%s" % self.service.port,
headers={'x-auth-token': self.token},
raise_exc=False)
def _fake_put(self, *args):
(url, data) = args[1:]
# NOTE(sdague): using json= instead of data= sets the
# media type to application/json for us. Placement API is
# more sensitive to this than other APIs in the OpenStack
# ecosystem.
# TODO(sbauza): The current placement NoAuthMiddleware returns a 401
# in case a token is not provided. We should change that by creating
# a fake token so we could remove adding the header below.
return self._client.put(
url, json=data,
endpoint_override="http://127.0.0.1:%s" % self.service.port,
headers={'x-auth-token': self.token},
raise_exc=False)
def _fake_delete(self, *args):
(url,) = args[1:]
# TODO(sbauza): The current placement NoAuthMiddleware returns a 401
# in case a token is not provided. We should change that by creating
# a fake token so we could remove adding the header below.
return self._client.delete(
url,
endpoint_override="http://127.0.0.1:%s" % self.service.port,
headers={'x-auth-token': self.token},
raise_exc=False)
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