def test_via_cli(reactor, hosts):
log.startLogging(sys.stdout)
client = TxKazooClient(hosts=hosts, txlog=log)
yield client.start()
yield partitioning(reactor, client)
# yield locking(reactor, client)
yield client.stop()
def test_via_cli(reactor, hosts):
log.startLogging(sys.stdout)
client = TxKazooClient(hosts=hosts, txlog=log)
yield client.start()
yield partitioning(reactor, client)
#yield locking(reactor, client)
yield client.stop()
class TxKazooClientTests(TxKazooTestCase):
"""
Tests for `TxKazooClient`
"""
@mock.patch('txkazoo.reactor')
def test_init(self, mock_reactor):
"""
__init__ sets up thread size and creates KazooClient
"""
self.txkzclient = TxKazooClient(hosts='abc', arg2='12', threads=20)
mock_reactor.suggestThreadPoolSize.assert_called_once_with(20)
self.kazoo_client.assert_called_with(hosts='abc', arg2='12')
self.assertEqual(self.txkzclient.client, self.kz_obj)
def test_method(self):
"""
Any method is called in seperate thread
"""
d = self.txkzclient.start()
self.defer_to_thread.assert_called_once_with(self.txkzclient.client.start)
self.assertEqual(d, self.defer_to_thread.return_value)
def test_property_get(self):
"""
Accessing property does not defer to thread. It is returned immediately
"""
s = self.txkzclient.state
self.assertFalse(self.defer_to_thread.called)
self.assertEqual(s, self.kazoo_client.return_value.state)
def test_init(self, mock_reactor):
"""
__init__ sets up thread size and creates KazooClient
"""
self.txkzclient = TxKazooClient(hosts='abc', arg2='12', threads=20)
mock_reactor.suggestThreadPoolSize.assert_called_once_with(20)
self.kazoo_client.assert_called_with(hosts='abc', arg2='12')
self.assertEqual(self.txkzclient.client, self.kz_obj)
def makeService(config):
"""
Set up the otter-api service.
"""
config = dict(config)
set_config_data(config)
parent = MultiService()
region = config_value('region')
seed_endpoints = [
clientFromString(reactor, str(host))
for host in config_value('cassandra.seed_hosts')]
cassandra_cluster = LoggingCQLClient(
TimingOutCQLClient(
reactor,
RoundRobinCassandraCluster(
seed_endpoints,
config_value('cassandra.keyspace'),
disconnect_on_cancel=True),
config_value('cassandra.timeout') or 30),
log.bind(system='otter.silverberg'))
store = CassScalingGroupCollection(
cassandra_cluster, reactor, config_value('limits.absolute.maxGroups'))
admin_store = CassAdmin(cassandra_cluster)
bobby_url = config_value('bobby_url')
if bobby_url is not None:
set_bobby(BobbyClient(bobby_url))
service_configs = get_service_configs(config)
authenticator = generate_authenticator(reactor, config['identity'])
supervisor = SupervisorService(authenticator, region, coiterate,
service_configs)
supervisor.setServiceParent(parent)
set_supervisor(supervisor)
health_checker = HealthChecker(reactor, {
'store': getattr(store, 'health_check', None),
'kazoo': store.kazoo_health_check,
'supervisor': supervisor.health_check
})
# Setup cassandra cluster to disconnect when otter shuts down
if 'cassandra_cluster' in locals():
parent.addService(FunctionalService(stop=partial(
call_after_supervisor, cassandra_cluster.disconnect, supervisor)))
otter = Otter(store, region, health_checker.health_check)
site = Site(otter.app.resource())
site.displayTracebacks = False
api_service = service(str(config_value('port')), site)
api_service.setServiceParent(parent)
# Setup admin service
admin_port = config_value('admin')
if admin_port:
admin = OtterAdmin(admin_store)
admin_site = Site(admin.app.resource())
admin_site.displayTracebacks = False
admin_service = service(str(admin_port), admin_site)
admin_service.setServiceParent(parent)
# setup cloud feed
cf_conf = config.get('cloudfeeds', None)
if cf_conf is not None:
id_conf = deepcopy(config['identity'])
id_conf['strategy'] = 'single_tenant'
add_to_fanout(CloudFeedsObserver(
reactor=reactor,
authenticator=generate_authenticator(reactor, id_conf),
tenant_id=cf_conf['tenant_id'],
region=region,
service_configs=service_configs))
# Setup Kazoo client
if config_value('zookeeper'):
threads = config_value('zookeeper.threads') or 10
disable_logs = config_value('zookeeper.no_logs')
threadpool = ThreadPool(maxthreads=threads)
sync_kz_client = KazooClient(
hosts=config_value('zookeeper.hosts'),
# Keep trying to connect until the end of time with
# max interval of 10 minutes
connection_retry=dict(max_tries=-1, max_delay=600),
logger=None if disable_logs else TxLogger(log.bind(system='kazoo'))
)
kz_client = TxKazooClient(reactor, threadpool, sync_kz_client)
# Don't timeout. Keep trying to connect forever
d = kz_client.start(timeout=None)
def on_client_ready(_):
dispatcher = get_full_dispatcher(reactor, authenticator, log,
get_service_configs(config),
kz_client, store, supervisor,
cassandra_cluster)
# Setup scheduler service after starting
scheduler = setup_scheduler(parent, dispatcher, store, kz_client)
health_checker.checks['scheduler'] = scheduler.health_check
otter.scheduler = scheduler
# Give dispatcher to Otter REST object
otter.dispatcher = dispatcher
# Set the client after starting
# NOTE: There is small amount of time when the start is
# not finished and the kz_client is not set in which case
# policy execution and group delete will fail
store.kz_client = kz_client
# Setup kazoo to stop when shutting down
parent.addService(FunctionalService(
stop=partial(call_after_supervisor,
kz_client.stop, supervisor)))
setup_converger(
parent, kz_client, dispatcher,
config_value('converger.interval') or 10,
config_value('converger.build_timeout') or 3600,
config_value('converger.limited_retry_iterations') or 10,
config_value('converger.step_limits') or {})
d.addCallback(on_client_ready)
d.addErrback(log.err, 'Could not start TxKazooClient')
return parent
def makeService(config):
"""
Set up the otter-api service.
"""
set_config_data(dict(config))
s = MultiService()
region = config_value('region')
seed_endpoints = [
clientFromString(reactor, str(host))
for host in config_value('cassandra.seed_hosts')]
cassandra_cluster = LoggingCQLClient(
TimingOutCQLClient(
reactor,
RoundRobinCassandraCluster(
seed_endpoints,
config_value('cassandra.keyspace')),
config_value('cassandra.timeout') or 30),
log.bind(system='otter.silverberg'))
get_consistency = partial(
get_consistency_level,
default=config_value('cassandra.default_consistency'),
exceptions=config_value('cassandra.consistency_exceptions'))
store = CassScalingGroupCollection(cassandra_cluster, reactor,
get_consistency)
admin_store = CassAdmin(cassandra_cluster, get_consistency)
bobby_url = config_value('bobby_url')
if bobby_url is not None:
set_bobby(BobbyClient(bobby_url))
cache_ttl = config_value('identity.cache_ttl')
if cache_ttl is None:
# FIXME: Pick an arbitrary cache ttl value based on absolutely no
# science.
cache_ttl = 300
authenticator = CachingAuthenticator(
reactor,
RetryingAuthenticator(
reactor,
ImpersonatingAuthenticator(
config_value('identity.username'),
config_value('identity.password'),
config_value('identity.url'),
config_value('identity.admin_url')),
max_retries=config_value('identity.max_retries'),
retry_interval=config_value('identity.retry_interval')),
cache_ttl)
supervisor = SupervisorService(authenticator.authenticate_tenant,
region, coiterate)
supervisor.setServiceParent(s)
set_supervisor(supervisor)
health_checker = HealthChecker(reactor, {
'store': getattr(store, 'health_check', None),
'kazoo': store.kazoo_health_check,
'supervisor': supervisor.health_check
})
# Setup cassandra cluster to disconnect when otter shuts down
if 'cassandra_cluster' in locals():
s.addService(FunctionalService(stop=partial(call_after_supervisor,
cassandra_cluster.disconnect, supervisor)))
otter = Otter(store, region, health_checker.health_check,
es_host=config_value('elasticsearch.host'))
site = Site(otter.app.resource())
site.displayTracebacks = False
api_service = service(str(config_value('port')), site)
api_service.setServiceParent(s)
# Setup admin service
admin_port = config_value('admin')
if admin_port:
admin = OtterAdmin(admin_store)
admin_site = Site(admin.app.resource())
admin_site.displayTracebacks = False
admin_service = service(str(admin_port), admin_site)
admin_service.setServiceParent(s)
# Setup Kazoo client
if config_value('zookeeper'):
threads = config_value('zookeeper.threads') or 10
kz_client = TxKazooClient(hosts=config_value('zookeeper.hosts'),
threads=threads, txlog=log.bind(system='kazoo'))
d = kz_client.start()
def on_client_ready(_):
# Setup scheduler service after starting
scheduler = setup_scheduler(s, store, kz_client)
health_checker.checks['scheduler'] = scheduler.health_check
otter.scheduler = scheduler
# Set the client after starting
# NOTE: There is small amount of time when the start is not finished
# and the kz_client is not set in which case policy execution and group
# delete will fail
store.kz_client = kz_client
# Setup kazoo to stop when shutting down
s.addService(FunctionalService(stop=partial(call_after_supervisor,
kz_client.stop, supervisor)))
d.addCallback(on_client_ready)
d.addErrback(log.err, 'Could not start TxKazooClient')
return s