openstack
/
oslo.messaging
Code Issues Proposed changes

[zmq] Maintain several redis hosts 

This patch makes it possible to maintain several redis hosts at
once in order to increase driver's reliability and fault tolerance.

Change-Id: Id6f63a4bb67a39340a74d16144c79028c7af245d
This commit is contained in:
Gevorg Davoian 2016-10-04 12:36:13 +03:00
parent cb13e65bed
commit cb3af2167f
7 changed files with 291 additions and 133 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
oslo_messaging/_drivers/impl_zmq.py
View File

@ -102,7 +102,7 @@ class ZmqDriver(base.BaseDriver):
self.matchmaker = driver.DriverManager(
'oslo.messaging.zmq.matchmaker',
self.get_matchmaker_backend(url),
self.get_matchmaker_backend(self.conf, url),
).driver(self.conf, url=url)
client_cls = zmq_client.ZmqClientProxy
@ -124,12 +124,13 @@ class ZmqDriver(base.BaseDriver):
super(ZmqDriver, self).__init__(conf, url, default_exchange,
allowed_remote_exmods)
def get_matchmaker_backend(self, url):
zmq_transport, p, matchmaker_backend = url.transport.partition('+')
@staticmethod
def get_matchmaker_backend(conf, url):
zmq_transport, _, matchmaker_backend = url.transport.partition('+')
assert zmq_transport == 'zmq', "Needs to be zmq for this transport!"
if not matchmaker_backend:
return self.conf.oslo_messaging_zmq.rpc_zmq_matchmaker
elif matchmaker_backend not in zmq_options.MATCHMAKER_BACKENDS:
return conf.oslo_messaging_zmq.rpc_zmq_matchmaker
if matchmaker_backend not in zmq_options.MATCHMAKER_BACKENDS:
raise rpc_common.RPCException(
_LE("Incorrect matchmaker backend name %(backend_name)s!"
"Available names are: %(available_names)s") %

312
oslo_messaging/_drivers/zmq_driver/matchmaker/zmq_matchmaker_redis.py
View File

@ -1,3 +1,4 @@
# Copyright 2016 Mirantis, Inc.
#
# 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
@ -11,15 +12,21 @@
# License for the specific language governing permissions and limitations
# under the License.
import abc
import functools
import logging
from retrying import retry
import random
import time
from oslo_config import cfg
from oslo_utils import importutils
from retrying import retry
import six
from oslo_messaging._drivers.zmq_driver.matchmaker import zmq_matchmaker_base
from oslo_messaging._drivers.zmq_driver import zmq_address
from oslo_messaging._i18n import _LW, _LE
from oslo_messaging._drivers.zmq_driver import zmq_updater
from oslo_messaging._i18n import _LE, _LI, _LW
redis = importutils.try_import('redis')
redis_sentinel = importutils.try_import('redis.sentinel')
@ -67,20 +74,46 @@ _PUBLISHERS_KEY = "PUBLISHERS"
_ROUTERS_KEY = "ROUTERS"
def redis_connection_warn(func):
def func_wrapper(*args, **kwargs):
try:
return func(*args, **kwargs)
except redis.ConnectionError:
LOG.warning(_LW("Redis is currently not available. "
"Messages are being sent to known targets using "
"existing connections. But new nodes "
"can not be discovered until Redis is up "
"and running."))
def write_to_redis_connection_warn(func):
@functools.wraps(func)
def func_wrapper(self, *args, **kwargs):
# try to perform a write operation to all available hosts
success = False
for redis_instance in self._redis_instances:
if not redis_instance._is_available:
continue
try:
func(self, redis_instance, *args, **kwargs)
success = True
except redis.ConnectionError:
LOG.warning(_LW("Redis host %s is not available now."),
redis_instance._address)
redis_instance._is_available = False
redis_instance._ready_from = float("inf")
if not success:
raise zmq_matchmaker_base.MatchmakerUnavailable()
return func_wrapper
def read_from_redis_connection_warn(func):
@functools.wraps(func)
def func_wrapper(self, *args, **kwargs):
# try to perform a read operation from any available and ready host
for redis_instance in self._redis_instances:
if not redis_instance._is_available \
or redis_instance._ready_from > time.time():
continue
try:
return func(self, redis_instance, *args, **kwargs)
except redis.ConnectionError:
LOG.warning(_LW("Redis host %s is not available now."),
redis_instance._address)
redis_instance._is_available = False
redis_instance._ready_from = float("inf")
raise zmq_matchmaker_base.MatchmakerUnavailable()
return func_wrapper
def no_reraise(func):
def func_wrapper(*args, **kwargs):
try:
@ -107,131 +140,84 @@ def retry_if_empty(hosts):
return not hosts
class MatchmakerRedis(zmq_matchmaker_base.MatchmakerBase):
@six.add_metaclass(abc.ABCMeta)
class MatchmakerRedisBase(zmq_matchmaker_base.MatchmakerBase):
def __init__(self, conf, *args, **kwargs):
super(MatchmakerRedis, self).__init__(conf, *args, **kwargs)
self.conf.register_opts(matchmaker_redis_opts, "matchmaker_redis")
if redis is None:
raise ImportError(_LE("Redis package is not available!"))
self.sentinel_hosts = self._extract_sentinel_options()
if not self.sentinel_hosts:
self.standalone_redis = self._extract_standalone_redis_options()
self._redis = redis.StrictRedis(
host=self.standalone_redis["host"],
port=self.standalone_redis["port"],
password=self.standalone_redis["password"]
)
else:
socket_timeout = self.conf.matchmaker_redis.socket_timeout / 1000.
sentinel = redis.sentinel.Sentinel(
sentinels=self.sentinel_hosts,
socket_timeout=socket_timeout
)
super(MatchmakerRedisBase, self).__init__(conf, *args, **kwargs)
self._redis = sentinel.master_for(
self.conf.matchmaker_redis.sentinel_group_name,
socket_timeout=socket_timeout
)
self.conf.register_opts(matchmaker_redis_opts, "matchmaker_redis")
def _extract_sentinel_options(self):
if self.url and self.url.hosts:
if len(self.url.hosts) > 1:
return [(host.hostname, host.port) for host in self.url.hosts]
elif self.conf.matchmaker_redis.sentinel_hosts:
s = self.conf.matchmaker_redis.sentinel_hosts
return [tuple(i.split(":")) for i in s]
@abc.abstractmethod
def _sadd(self, key, value, expire):
pass
def _extract_standalone_redis_options(self):
if self.url and self.url.hosts:
redis_host = self.url.hosts[0]
return {"host": redis_host.hostname,
"port": redis_host.port,
"password": redis_host.password}
else:
return {"host": self.conf.matchmaker_redis.host,
"port": self.conf.matchmaker_redis.port,
"password": self.conf.matchmaker_redis.password}
@abc.abstractmethod
def _srem(self, key, value):
pass
def _add_key_with_expire(self, key, value, expire):
self._redis.sadd(key, value)
if expire > 0:
self._redis.expire(key, expire)
@abc.abstractmethod
def _smembers(self, key):
pass
@no_reraise
@redis_connection_warn
def register_publisher(self, hostname, expire=-1):
host_str = ",".join(hostname)
self._add_key_with_expire(_PUBLISHERS_KEY, host_str, expire)
self._sadd(_PUBLISHERS_KEY, ','.join(hostname), expire)
@no_reraise
@redis_connection_warn
def unregister_publisher(self, hostname):
host_str = ",".join(hostname)
self._redis.srem(_PUBLISHERS_KEY, host_str)
self._srem(_PUBLISHERS_KEY, ','.join(hostname))
@empty_list_on_error
@redis_connection_warn
def get_publishers(self):
hosts = []
hosts.extend([tuple(host_str.split(","))
for host_str in
self._get_hosts_by_key(_PUBLISHERS_KEY)])
return hosts
return [tuple(hostname.split(',')) for hostname
in self._smembers(_PUBLISHERS_KEY)]
@no_reraise
@redis_connection_warn
def register_router(self, hostname, expire=-1):
self._add_key_with_expire(_ROUTERS_KEY, hostname, expire)
self._sadd(_ROUTERS_KEY, hostname, expire)
@no_reraise
@redis_connection_warn
def unregister_router(self, hostname):
self._redis.srem(_ROUTERS_KEY, hostname)
self._srem(_ROUTERS_KEY, hostname)
@empty_list_on_error
@redis_connection_warn
def get_routers(self):
return self._get_hosts_by_key(_ROUTERS_KEY)
return self._smembers(_ROUTERS_KEY)
@redis_connection_warn
def get_hosts_by_key(self, key):
return self._get_hosts_by_key(key)
return self._smembers(key)
def _get_hosts_by_key(self, key):
return self._redis.smembers(key)
@redis_connection_warn
def register(self, target, hostname, listener_type, expire=-1):
if target.server:
key = zmq_address.target_to_key(target, listener_type)
self._add_key_with_expire(key, hostname, expire)
self._sadd(key, hostname, expire)
key = zmq_address.prefix_str(target.topic, listener_type)
self._add_key_with_expire(key, hostname, expire)
self._sadd(key, hostname, expire)
@no_reraise
@redis_connection_warn
def unregister(self, target, hostname, listener_type):
if target.server:
key = zmq_address.target_to_key(target, listener_type)
self._redis.srem(key, hostname)
self._srem(key, hostname)
key = zmq_address.prefix_str(target.topic, listener_type)
self._redis.srem(key, hostname)
self._srem(key, hostname)
@redis_connection_warn
def get_hosts(self, target, listener_type):
hosts = []
if target.server:
key = zmq_address.target_to_key(target, listener_type)
hosts.extend(self._get_hosts_by_key(key))
hosts.extend(self._smembers(key))
if not hosts:
key = zmq_address.prefix_str(target.topic, listener_type)
hosts.extend(self._get_hosts_by_key(key))
hosts.extend(self._smembers(key))
LOG.debug("[Redis] get_hosts for target %(target)s: %(hosts)s",
{"target": target, "hosts": hosts})
@ -241,10 +227,9 @@ class MatchmakerRedis(zmq_matchmaker_base.MatchmakerBase):
def get_hosts_retry(self, target, listener_type):
return self._retry_method(target, listener_type, self.get_hosts)
@redis_connection_warn
def get_hosts_fanout(self, target, listener_type):
key = zmq_address.prefix_str(target.topic, listener_type)
hosts = list(self._get_hosts_by_key(key))
hosts = list(self._smembers(key))
LOG.debug("[Redis] get_hosts_fanout for target %(target)s: %(hosts)s",
{"target": target, "hosts": hosts})
@ -262,3 +247,154 @@ class MatchmakerRedis(zmq_matchmaker_base.MatchmakerBase):
def _get_hosts_retry(target, listener_type):
return method(target, listener_type)
return _get_hosts_retry(target, listener_type)
class MatchmakerRedis(MatchmakerRedisBase):
def __init__(self, conf, *args, **kwargs):
super(MatchmakerRedis, self).__init__(conf, *args, **kwargs)
self._redis_hosts = self._extract_redis_hosts()
self._redis_instances = [
redis.StrictRedis(host=redis_host["host"],
port=redis_host["port"],
password=redis_host["password"])
for redis_host in self._redis_hosts
]
for redis_host, redis_instance \
in six.moves.zip(self._redis_hosts, self._redis_instances):
address = "{host}:{port}".format(host=redis_host["host"],
port=redis_host["port"])
redis_instance._address = address
is_available = self._check_availability(redis_instance)
if is_available:
redis_instance._is_available = True
redis_instance._ready_from = time.time()
else:
LOG.warning(_LW("Redis host %s is not available now."),
address)
redis_instance._is_available = False
redis_instance._ready_from = float("inf")
# NOTE(gdavoian): store instances in a random order
# (for the sake of load balancing)
random.shuffle(self._redis_instances)
self._availability_updater = \
MatchmakerRedisAvailabilityUpdater(self.conf, self)
def _extract_redis_hosts(self):
if self.url and self.url.hosts:
return [{"host": redis_host.hostname,
"port": redis_host.port,
"password": redis_host.password}
for redis_host in self.url.hosts]
else:
# FIXME(gdavoian): remove the code below along with the
# corresponding deprecated options in the next release
return [{"host": self.conf.matchmaker_redis.host,
"port": self.conf.matchmaker_redis.port,
"password": self.conf.matchmaker_redis.password}]
@staticmethod
def _check_availability(redis_instance):
try:
redis_instance.ping()
return True
except redis.ConnectionError:
return False
@write_to_redis_connection_warn
def _sadd(self, redis_instance, key, value, expire):
redis_instance.sadd(key, value)
if expire > 0:
redis_instance.expire(key, expire)
@write_to_redis_connection_warn
def _srem(self, redis_instance, key, value):
redis_instance.srem(key, value)
@read_from_redis_connection_warn
def _smembers(self, redis_instance, key):
return redis_instance.smembers(key)
class MatchmakerRedisAvailabilityUpdater(zmq_updater.UpdaterBase):
_MIN_SLEEP_FOR = 10
def __init__(self, conf, matchmaker):
super(MatchmakerRedisAvailabilityUpdater, self).__init__(
conf, matchmaker, self._update_availability,
sleep_for=conf.oslo_messaging_zmq.zmq_target_update
)
def _update_availability(self):
fraction_of_available_instances = 0
for redis_instance in self.matchmaker._redis_instances:
if not redis_instance._is_available:
is_available = \
self.matchmaker._check_availability(redis_instance)
if is_available:
LOG.info(_LI("Redis host %s is available again."),
redis_instance._address)
fraction_of_available_instances += 1
# NOTE(gdavoian): mark an instance as available for
# writing to, but wait until all services register
# themselves in it for making the instance ready for
# reading from
redis_instance._is_available = True
redis_instance._ready_from = time.time() + \
self.conf.oslo_messaging_zmq.zmq_target_update
else:
fraction_of_available_instances += 1
fraction_of_available_instances /= \
float(len(self.matchmaker._redis_instances))
# NOTE(gdavoian): make the sleep time proportional to the number of
# currently available instances
self._sleep_for = max(self.conf.oslo_messaging_zmq.zmq_target_update *
fraction_of_available_instances,
self._MIN_SLEEP_FOR)
class MatchmakerSentinel(MatchmakerRedisBase):
def __init__(self, conf, *args, **kwargs):
super(MatchmakerSentinel, self).__init__(conf, *args, **kwargs)
self._sentinel_hosts = self._extract_sentinel_hosts()
socket_timeout = self.conf.matchmaker_redis.socket_timeout / 1000.
sentinel = redis_sentinel.Sentinel(
sentinels=self._sentinel_hosts,
socket_timeout=socket_timeout
)
self._redis_instance = sentinel.master_for(
self.conf.matchmaker_redis.sentinel_group_name,
socket_timeout=socket_timeout
)
def _extract_sentinel_hosts(self):
if self.url and self.url.hosts:
return [(sentinel_host.hostname, sentinel_host.port)
for sentinel_host in self.url.hosts]
elif self.conf.matchmaker_redis.sentinel_hosts:
return [tuple(sentinel_host.split(':')) for sentinel_host
in self.conf.matchmaker_redis.sentinel_hosts]
else:
return []
def _sadd(self, key, value, expire):
self._redis_instance.sadd(key, value)
if expire > 0:
self._redis_instance.expire(key, expire)
def _srem(self, key, value):
self._redis_instance.srem(key, value)
def _smembers(self, key):
return self._redis_instance.smembers(key)

18
oslo_messaging/_drivers/zmq_driver/proxy/zmq_proxy.py
View File

@ -19,9 +19,11 @@ import socket
from oslo_config import cfg
from stevedore import driver
from oslo_messaging._drivers import impl_zmq
from oslo_messaging._drivers.zmq_driver.proxy.central import zmq_central_proxy
from oslo_messaging._drivers.zmq_driver import zmq_async
from oslo_messaging._i18n import _LI
from oslo_messaging import transport
LOG = logging.getLogger(__name__)
@ -51,7 +53,10 @@ zmq_proxy_opts = [
cfg.BoolOpt('ack_pub_sub', default=False,
help='Use acknowledgements for notifying senders about '
'receiving their fanout messages. '
'The option is ignored if PUB/SUB is disabled.')
'The option is ignored if PUB/SUB is disabled.'),
cfg.StrOpt('url', default='zmq://127.0.0.1:6379/',
help='ZMQ-driver transport URL with additional configurations')
]
@ -79,6 +84,8 @@ def parse_command_line_args(conf):
parser.add_argument('-a', '--ack-pub-sub', dest='ack_pub_sub',
action='store_true',
help='Acknowledge PUB/SUB messages')
parser.add_argument('-u', '--url', dest='url', type=str,
help='Transport URL with configurations')
parser.add_argument('-d', '--debug', dest='debug', action='store_true',
help='Turn on DEBUG logging level instead of INFO')
@ -108,6 +115,8 @@ def parse_command_line_args(conf):
if args.ack_pub_sub:
conf.set_override('ack_pub_sub', args.ack_pub_sub,
group='zmq_proxy_opts')
if args.url:
conf.set_override('url', args.url, group='zmq_proxy_opts')
class ZmqProxy(object):
@ -152,10 +161,13 @@ class ZmqProxy(object):
def __init__(self, conf):
super(ZmqProxy, self).__init__()
self.conf = conf
url = transport.TransportURL.parse(
self.conf, url=self.conf.zmq_proxy_opts.url
)
self.matchmaker = driver.DriverManager(
'oslo.messaging.zmq.matchmaker',
self.conf.oslo_messaging_zmq.rpc_zmq_matchmaker,
).driver(self.conf)
impl_zmq.ZmqDriver.get_matchmaker_backend(self.conf, url)
).driver(self.conf, url=url)
self.context = zmq.Context()
self.proxy = self._choose_proxy_implementation()

2
oslo_messaging/_drivers/zmq_driver/zmq_options.py
View File

@ -20,7 +20,7 @@ from oslo_messaging._drivers import base
from oslo_messaging import server
MATCHMAKER_BACKENDS = ('redis', 'dummy')
MATCHMAKER_BACKENDS = ('redis', 'sentinel', 'dummy')
MATCHMAKER_DEFAULT = 'redis'

27
oslo_messaging/tests/drivers/zmq/matchmaker/test_impl_matchmaker.py
View File

@ -12,12 +12,9 @@
# License for the specific language governing permissions and limitations
# under the License.
from fixtures._fixtures import timeout
import inspect
import retrying
from stevedore import driver
import testscenarios
import testtools
import oslo_messaging
from oslo_messaging.tests import utils as test_utils
@ -31,8 +28,7 @@ def redis_available():
if not redis:
return False
try:
c = redis.StrictRedis(socket_timeout=1)
c.ping()
redis.StrictRedis(socket_timeout=1).ping()
return True
except redis.exceptions.ConnectionError:
return False
@ -41,7 +37,6 @@ def redis_available():
load_tests = testscenarios.load_tests_apply_scenarios
@testtools.skipIf(not redis_available(), "redis unavailable")
class TestImplMatchmaker(test_utils.BaseTestCase):
scenarios = [
@ -52,13 +47,18 @@ class TestImplMatchmaker(test_utils.BaseTestCase):
def setUp(self):
super(TestImplMatchmaker, self).setUp()
if self.rpc_zmq_matchmaker == "redis":
if not redis_available():
self.skipTest("redis unavailable")
self.test_matcher = driver.DriverManager(
'oslo.messaging.zmq.matchmaker',
self.rpc_zmq_matchmaker,
).driver(self.conf)
if self.rpc_zmq_matchmaker == "redis":
self.addCleanup(self.test_matcher._redis.flushdb)
for redis_instance in self.test_matcher._redis_instances:
self.addCleanup(redis_instance.flushdb)
self.target = oslo_messaging.Target(topic="test_topic")
self.host1 = b"test_host1"
@ -77,7 +77,7 @@ class TestImplMatchmaker(test_utils.BaseTestCase):
self.assertItemsEqual(self.test_matcher.get_hosts(self.target, "test"),
[self.host1, self.host2])
def test_register_unsibscribe(self):
def test_register_unregister(self):
self.test_matcher.register(self.target, self.host1, "test")
self.test_matcher.register(self.target, self.host2, "test")
@ -95,12 +95,7 @@ class TestImplMatchmaker(test_utils.BaseTestCase):
def test_get_hosts_wrong_topic(self):
target = oslo_messaging.Target(topic="no_such_topic")
hosts = []
try:
hosts = self.test_matcher.get_hosts(target, "test")
except (timeout.TimeoutException, retrying.RetryError):
pass
self.assertEqual([], hosts)
self.assertEqual([], self.test_matcher.get_hosts(target, "test"))
def test_handle_redis_package_error(self):
if self.rpc_zmq_matchmaker == "redis":
@ -108,10 +103,10 @@ class TestImplMatchmaker(test_utils.BaseTestCase):
module = inspect.getmodule(self.test_matcher)
redis_package = module.redis
# 'redis' variable is set None, when importing package is failed
# 'redis' variable is set to None, when package importing is failed
module.redis = None
self.assertRaises(ImportError, self.test_matcher.__init__,
self.conf)
# retrieve 'redis' variable wihch is set originally
# retrieve 'redis' variable which is set originally
module.redis = redis_package

53
oslo_messaging/tests/drivers/zmq/test_zmq_transport_url.py
View File

@ -22,7 +22,6 @@ from oslo_messaging._drivers.zmq_driver.matchmaker import zmq_matchmaker_redis
from oslo_messaging._drivers.zmq_driver import zmq_async
from oslo_messaging.tests import utils as test_utils
zmq = zmq_async.import_zmq()
@ -44,7 +43,7 @@ class TestZmqTransportUrl(test_utils.BaseTestCase):
driver.matchmaker.__class__)
self.assertEqual('zmq', driver.matchmaker.url.transport)
def test_error_name(self):
def test_error_url(self):
self.assertRaises(common.RPCException, self.setup_url, "zmq+error:///")
def test_dummy_url(self):
@ -59,30 +58,44 @@ class TestZmqTransportUrl(test_utils.BaseTestCase):
driver.matchmaker.__class__)
self.assertEqual('zmq+redis', driver.matchmaker.url.transport)
def test_redis_url_no_creds(self):
driver, url = self.setup_url("zmq+redis://host:65123/")
self.assertIs(zmq_matchmaker_redis.MatchmakerRedis,
def test_sentinel_url(self):
driver, url = self.setup_url("zmq+sentinel:///")
self.assertIs(zmq_matchmaker_redis.MatchmakerSentinel,
driver.matchmaker.__class__)
self.assertEqual('zmq+redis', driver.matchmaker.url.transport)
self.assertEqual("host", driver.matchmaker.standalone_redis["host"])
self.assertEqual(65123, driver.matchmaker.standalone_redis["port"])
self.assertEqual('zmq+sentinel', driver.matchmaker.url.transport)
def test_redis_url_no_port(self):
driver, url = self.setup_url("zmq+redis://:p12@host:65123/")
def test_host_with_credentials_url(self):
driver, url = self.setup_url("zmq://:password@host:60000/")
self.assertIs(zmq_matchmaker_redis.MatchmakerRedis,
driver.matchmaker.__class__)
self.assertEqual('zmq', driver.matchmaker.url.transport)
self.assertEqual(
[{"host": "host", "port": 60000, "password": "password"}],
driver.matchmaker._redis_hosts
)
def test_redis_multiple_hosts_url(self):
driver, url = self.setup_url(
"zmq+redis://host1:60001,host2:60002,host3:60003/"
)
self.assertIs(zmq_matchmaker_redis.MatchmakerRedis,
driver.matchmaker.__class__)
self.assertEqual('zmq+redis', driver.matchmaker.url.transport)
self.assertEqual("host", driver.matchmaker.standalone_redis["host"])
self.assertEqual(65123, driver.matchmaker.standalone_redis["port"])
self.assertEqual("p12", driver.matchmaker.standalone_redis["password"])
self.assertEqual(
[{"host": "host1", "port": 60001, "password": None},
{"host": "host2", "port": 60002, "password": None},
{"host": "host3", "port": 60003, "password": None}],
driver.matchmaker._redis_hosts
)
def test_sentinel_multiple_hosts_url(self):
driver, url = self.setup_url(
"zmq+redis://sentinel1:20001,sentinel2:20001,sentinel3:20001/")
self.assertIs(zmq_matchmaker_redis.MatchmakerRedis,
"zmq+sentinel://host1:20001,host2:20002,host3:20003/"
)
self.assertIs(zmq_matchmaker_redis.MatchmakerSentinel,
driver.matchmaker.__class__)
self.assertEqual('zmq+redis', driver.matchmaker.url.transport)
self.assertEqual(3, len(driver.matchmaker.sentinel_hosts))
expected = [("sentinel1", 20001), ("sentinel2", 20001),
("sentinel3", 20001)]
self.assertEqual(expected, driver.matchmaker.sentinel_hosts)
self.assertEqual('zmq+sentinel', driver.matchmaker.url.transport)
self.assertEqual(
[("host1", 20001), ("host2", 20002), ("host3", 20003)],
driver.matchmaker._sentinel_hosts
)

1
setup.cfg
View File

@ -76,6 +76,7 @@ oslo.messaging.zmq.matchmaker =
# Matchmakers for ZeroMQ
dummy = oslo_messaging._drivers.zmq_driver.matchmaker.zmq_matchmaker_base:MatchmakerDummy
redis = oslo_messaging._drivers.zmq_driver.matchmaker.zmq_matchmaker_redis:MatchmakerRedis
sentinel = oslo_messaging._drivers.zmq_driver.matchmaker.zmq_matchmaker_redis:MatchmakerSentinel
oslo.config.opts =
oslo.messaging = oslo_messaging.opts:list_opts