openstack
/
kuryr-kubernetes
Code Issues Proposed changes

Merge "Workaround OVN bug causing subports to be DOWN"

This commit is contained in:
Zuul 2021-06-09 10:06:27 +00:00 committed by Gerrit Code Review
parent 6d8e3b0fc5 9d0b053c4f
commit 7d06acd17e
23 changed files with 132 additions and 78 deletions
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4
kuryr_kubernetes/cni/handlers.py
View File

@ -36,7 +36,7 @@ class CNIHandlerBase(k8s_base.ResourceEventHandler, metaclass=abc.ABCMeta):
self._callback = on_done
self._vifs = {}
def on_present(self, pod):
def on_present(self, pod, *args, **kwargs):
vifs = self._get_vifs(pod)
if self.should_callback(pod, vifs):
@ -107,7 +107,7 @@ class CallbackHandler(CNIHandlerBase):
def callback(self):
self._callback(self._kuryrport, self._callback_vifs)
def on_deleted(self, kuryrport):
def on_deleted(self, kuryrport, *args, **kwargs):
LOG.debug("Got kuryrport %s deletion event.",
kuryrport['metadata']['name'])
if self._del_callback:

2
kuryr_kubernetes/controller/drivers/base.py
View File

@ -388,7 +388,7 @@ class PodVIFDriver(DriverBase, metaclass=abc.ABCMeta):
raise NotImplementedError()
@abc.abstractmethod
def activate_vif(self, vif):
def activate_vif(self, vif, **kwargs):
"""Updates VIF to become active.
Implementing drivers should update the specified `vif` object's

2
kuryr_kubernetes/controller/drivers/nested_dpdk_vif.py
View File

@ -64,7 +64,7 @@ class NestedDpdkPodVIFDriver(nested_vif.NestedPodVIFDriver):
vif.id, vm_id)
raise
def activate_vif(self, vif):
def activate_vif(self, vif, **kwargs):
# NOTE(danil): new virtual interface was created in nova instance
# during request_vif call, thus if it was not created successfully
# an exception o_exc.SDKException would be throwed. During binding

2
kuryr_kubernetes/controller/drivers/nested_macvlan_vif.py
View File

@ -86,7 +86,7 @@ class NestedMacvlanPodVIFDriver(nested_vif.NestedPodVIFDriver):
LOG.warning("Unable to release port %s as it no longer exists.",
vif.id)
def activate_vif(self, vif):
def activate_vif(self, vif, **kwargs):
# NOTE(mchiappe): there is no way to get feedback on the actual
# interface creation or activation as no plugging can happen for this
# interface type. However the status of the port is not relevant as

63
kuryr_kubernetes/controller/drivers/nested_vlan_vif.py
View File

@ -33,6 +33,7 @@ LOG = logging.getLogger(__name__)
DEFAULT_MAX_RETRY_COUNT = 3
DEFAULT_RETRY_INTERVAL = 1
ACTIVE_TIMEOUT = 90
CONF = cfg.CONF
@ -118,6 +119,37 @@ class NestedVlanPodVIFDriver(nested_vif.NestedPodVIFDriver):
vifs.append(vif)
return vifs
def activate_vif(self, vif, pod=None, retry_info=None):
try:
super().activate_vif(vif)
except k_exc.ResourceNotReady:
if retry_info and retry_info.get('elapsed', 0) > ACTIVE_TIMEOUT:
parent_port = self._get_parent_port(pod)
trunk_id = self._get_trunk_id(parent_port)
# NOTE(dulek): We don't need a lock to prevent VLAN ID from
# being taken over because the SegmentationDriver
# will keep it reserved in memory unless we
# release it. And we won't.
LOG.warning('Subport %s is in DOWN status for more than %d '
'seconds. This is a Neutron issue. Attempting to '
'reattach the subport to trunk %s using VLAN ID %s'
' to fix it.', vif.id, retry_info['elapsed'],
trunk_id, vif.vlan_id)
try:
self._remove_subport(trunk_id, vif.id)
except os_exc.NotFoundException:
# NOTE(dulek): This may happen when _add_subport() failed
# or Kuryr crashed between the calls. Let's
# try to fix it hoping that VLAN ID is still
# free.
LOG.warning('Subport %s was not attached to the trunk. '
'Trying to attach it anyway.', vif.id)
self._add_subport(trunk_id, vif.id,
requested_vlan_id=vif.vlan_id)
LOG.warning("Reattached subport %s, its state will be "
"rechecked when event will be retried.", vif.id)
raise
def release_vif(self, pod, vif, project_id=None, security_groups=None):
os_net = clients.get_network_client()
parent_port = self._get_parent_port(pod)
@ -182,7 +214,7 @@ class NestedVlanPodVIFDriver(nested_vif.NestedPodVIFDriver):
"with a Neutron vlan trunk")
raise k_exc.K8sNodeTrunkPortFailure
def _add_subport(self, trunk_id, subport):
def _add_subport(self, trunk_id, subport, requested_vlan_id=None):
"""Adds subport port to Neutron trunk
This method gets vlanid allocated from kuryr segmentation driver.
@ -196,29 +228,34 @@ class NestedVlanPodVIFDriver(nested_vif.NestedPodVIFDriver):
os_net = clients.get_network_client()
retry_count = 1
while True:
try:
vlan_id = self._get_vlan_id(trunk_id)
except os_exc.SDKException:
LOG.error("Getting VlanID for subport on "
"trunk %s failed!!", trunk_id)
raise
if requested_vlan_id:
vlan_id = requested_vlan_id
else:
try:
vlan_id = self._get_vlan_id(trunk_id)
except os_exc.SDKException:
LOG.error("Getting VLAN ID for subport on "
"trunk %s failed!!", trunk_id)
raise
subport = [{'segmentation_id': vlan_id,
'port_id': subport,
'segmentation_type': 'vlan'}]
try:
os_net.add_trunk_subports(trunk_id, subport)
except os_exc.ConflictException:
if retry_count < DEFAULT_MAX_RETRY_COUNT:
LOG.error("vlanid already in use on trunk, "
"%s. Retrying...", trunk_id)
if (retry_count < DEFAULT_MAX_RETRY_COUNT and
not requested_vlan_id):
LOG.error("VLAN ID already in use on trunk %s. "
"Retrying.", trunk_id)
retry_count += 1
sleep(DEFAULT_RETRY_INTERVAL)
continue
else:
LOG.error(
"MAX retry count reached. Failed to add subport")
LOG.error("Failed to add subport %s to trunk %s due to "
"VLAN ID %d conflict.", subport, trunk_id,
vlan_id)
raise
except os_exc.SDKException:
LOG.exception("Error happened during subport "
"addition to trunk %s", trunk_id)

2
kuryr_kubernetes/controller/drivers/neutron_vif.py
View File

@ -93,7 +93,7 @@ class NeutronPodVIFDriver(base.PodVIFDriver):
def release_vif(self, pod, vif, project_id=None, security_groups=None):
clients.get_network_client().delete_port(vif.id)
def activate_vif(self, vif):
def activate_vif(self, vif, **kwargs):
if vif.active:
return

2
kuryr_kubernetes/controller/drivers/sriov.py
View File

@ -73,7 +73,7 @@ class SriovVIFDriver(neutron_vif.NeutronPodVIFDriver):
self._reduce_remaining_sriov_vfs(pod, physnet)
return vif
def activate_vif(self, vif):
def activate_vif(self, vif, **kwargs):
vif.active = True
def _get_physnet_subnet_mapping(self):

12
kuryr_kubernetes/controller/drivers/vif_pool.py
View File

@ -118,8 +118,8 @@ class NoopVIFPool(base.VIFPoolDriver):
def release_vif(self, pod, vif, *argv):
self._drv_vif.release_vif(pod, vif, *argv)
def activate_vif(self, vif):
self._drv_vif.activate_vif(vif)
def activate_vif(self, vif, **kwargs):
self._drv_vif.activate_vif(vif, **kwargs)
def update_vif_sgs(self, pod, sgs):
self._drv_vif.update_vif_sgs(pod, sgs)
@ -168,8 +168,8 @@ class BaseVIFPool(base.VIFPoolDriver, metaclass=abc.ABCMeta):
def set_vif_driver(self, driver):
self._drv_vif = driver
def activate_vif(self, vif):
self._drv_vif.activate_vif(vif)
def activate_vif(self, vif, **kwargs):
self._drv_vif.activate_vif(vif, **kwargs)
def update_vif_sgs(self, pod, sgs):
self._drv_vif.update_vif_sgs(pod, sgs)
@ -1230,9 +1230,9 @@ class MultiVIFPool(base.VIFPoolDriver):
vif_drv_alias = self._get_vif_drv_alias(vif)
self._vif_drvs[vif_drv_alias].release_vif(pod, vif, *argv)
def activate_vif(self, vif):
def activate_vif(self, vif, **kwargs):
vif_drv_alias = self._get_vif_drv_alias(vif)
self._vif_drvs[vif_drv_alias].activate_vif(vif)
self._vif_drvs[vif_drv_alias].activate_vif(vif, **kwargs)
def update_vif_sgs(self, pod, sgs):
pod_vif_type = self._get_pod_vif_type(pod)

4
kuryr_kubernetes/controller/handlers/kuryrnetwork.py
View File

@ -50,7 +50,7 @@ class KuryrNetworkHandler(k8s_base.ResourceEventHandler):
self._drv_svc_sg = (
drivers.ServiceSecurityGroupsDriver.get_instance())
def on_present(self, kuryrnet_crd):
def on_present(self, kuryrnet_crd, *args, **kwargs):
ns_name = kuryrnet_crd['spec']['nsName']
project_id = kuryrnet_crd['spec']['projectId']
kns_status = kuryrnet_crd.get('status', {})
@ -90,7 +90,7 @@ class KuryrNetworkHandler(k8s_base.ResourceEventHandler):
status = {'nsLabels': kuryrnet_crd['spec']['nsLabels']}
self._patch_kuryrnetwork_crd(kuryrnet_crd, status, labels=True)
def on_finalize(self, kuryrnet_crd):
def on_finalize(self, kuryrnet_crd, *args, **kwargs):
LOG.debug("Deleting kuryrnetwork CRD resources: %s", kuryrnet_crd)
net_id = kuryrnet_crd.get('status', {}).get('netId')

2
kuryr_kubernetes/controller/handlers/kuryrnetwork_population.py
View File

@ -41,7 +41,7 @@ class KuryrNetworkPopulationHandler(k8s_base.ResourceEventHandler):
self._drv_vif_pool.set_vif_driver()
self._drv_nodes_subnets = drivers.NodesSubnetsDriver.get_instance()
def on_present(self, kuryrnet_crd):
def on_present(self, kuryrnet_crd, *args, **kwargs):
subnet_id = kuryrnet_crd.get('status', {}).get('subnetId')
if not subnet_id:
LOG.debug("No Subnet present for KuryrNetwork %s",

4
kuryr_kubernetes/controller/handlers/kuryrnetworkpolicy.py
View File

@ -87,7 +87,7 @@ class KuryrNetworkPolicyHandler(k8s_base.ResourceEventHandler):
return False
def on_present(self, knp):
def on_present(self, knp, *args, **kwargs):
uniq_name = utils.get_res_unique_name(knp)
LOG.debug('on_present() for NP %s', uniq_name)
project_id = self._drv_project.get_project(knp)
@ -234,7 +234,7 @@ class KuryrNetworkPolicyHandler(k8s_base.ResourceEventHandler):
raise
return net_crd['status']['netId']
def on_finalize(self, knp):
def on_finalize(self, knp, *args, **kwargs):
LOG.debug("Finalizing KuryrNetworkPolicy %s", knp)
project_id = self._drv_project.get_project(knp)
pods_to_update = self._drv_policy.affected_pods(knp)

29
kuryr_kubernetes/controller/handlers/kuryrport.py
View File

@ -58,7 +58,7 @@ class KuryrPortHandler(k8s_base.ResourceEventHandler):
.get_instance())
self.k8s = clients.get_kubernetes_client()
def on_present(self, kuryrport_crd):
def on_present(self, kuryrport_crd, *args, **kwargs):
if not kuryrport_crd['status']['vifs']:
# Get vifs
if not self.get_vifs(kuryrport_crd):
@ -66,6 +66,8 @@ class KuryrPortHandler(k8s_base.ResourceEventHandler):
# get_vifs method.
return
retry_info = kwargs.get('retry_info')
vifs = {ifname: {'default': data['default'],
'vif': objects.base.VersionedObject
.obj_from_primitive(data['vif'])}
@ -75,6 +77,7 @@ class KuryrPortHandler(k8s_base.ResourceEventHandler):
return
changed = False
pod = self._get_pod(kuryrport_crd)
try:
for ifname, data in vifs.items():
@ -86,22 +89,14 @@ class KuryrPortHandler(k8s_base.ResourceEventHandler):
driver_utils.update_port_pci_info(pod_node, data['vif'])
if not data['vif'].active:
try:
self._drv_vif_pool.activate_vif(data['vif'])
self._drv_vif_pool.activate_vif(data['vif'], pod=pod,
retry_info=retry_info)
changed = True
except os_exc.ResourceNotFound:
LOG.debug("Port not found, possibly already deleted. "
"No need to activate it")
finally:
if changed:
try:
name = kuryrport_crd['metadata']['name']
namespace = kuryrport_crd['metadata']['namespace']
pod = self.k8s.get(f"{constants.K8S_API_NAMESPACES}"
f"/{namespace}/pods/{name}")
except k_exc.K8sResourceNotFound as ex:
LOG.exception("Failed to get pod: %s", ex)
raise
project_id = self._drv_project.get_project(pod)
try:
@ -124,7 +119,7 @@ class KuryrPortHandler(k8s_base.ResourceEventHandler):
self._update_services(services, crd_pod_selectors,
project_id)
def on_finalize(self, kuryrport_crd):
def on_finalize(self, kuryrport_crd, *args, **kwargs):
name = kuryrport_crd['metadata']['name']
namespace = kuryrport_crd['metadata']['namespace']
try:
@ -282,3 +277,13 @@ class KuryrPortHandler(k8s_base.ResourceEventHandler):
sgs = self._drv_svc_sg.get_security_groups(service,
project_id)
self._drv_lbaas.update_lbaas_sg(service, sgs)
def _get_pod(self, kuryrport_crd):
try:
name = kuryrport_crd['metadata']['name']
namespace = kuryrport_crd['metadata']['namespace']
return self.k8s.get(f"{constants.K8S_API_NAMESPACES}"
f"/{namespace}/pods/{name}")
except k_exc.K8sResourceNotFound as ex:
LOG.exception("Failed to get pod: %s", ex)
raise

6
kuryr_kubernetes/controller/handlers/lbaas.py
View File

@ -50,7 +50,7 @@ class ServiceHandler(k8s_base.ResourceEventHandler):
if driver_utils.is_network_policy_enabled():
driver_utils.bump_networkpolicies(svc['metadata']['namespace'])
def on_present(self, service):
def on_present(self, service, *args, **kwargs):
reason = self._should_ignore(service)
if reason:
LOG.debug(reason, service['metadata']['name'])
@ -111,7 +111,7 @@ class ServiceHandler(k8s_base.ResourceEventHandler):
k8s = clients.get_kubernetes_client()
return k8s.add_finalizer(service, k_const.SERVICE_FINALIZER)
def on_finalize(self, service):
def on_finalize(self, service, *args, **kwargs):
k8s = clients.get_kubernetes_client()
svc_name = service['metadata']['name']
@ -305,7 +305,7 @@ class EndpointsHandler(k8s_base.ResourceEventHandler):
self._lb_provider = (
config.CONF.kubernetes.endpoints_driver_octavia_provider)
def on_present(self, endpoints):
def on_present(self, endpoints, *args, **kwargs):
ep_name = endpoints['metadata']['name']
ep_namespace = endpoints['metadata']['namespace']

4
kuryr_kubernetes/controller/handlers/loadbalancer.py
View File

@ -56,7 +56,7 @@ class KuryrLoadBalancerHandler(k8s_base.ResourceEventHandler):
return utils.get_subnets_id_cidrs(
self._drv_nodes_subnets.get_nodes_subnets())
def on_present(self, loadbalancer_crd):
def on_present(self, loadbalancer_crd, *args, **kwargs):
if loadbalancer_crd.get('status', None) is None:
kubernetes = clients.get_kubernetes_client()
@ -124,7 +124,7 @@ class KuryrLoadBalancerHandler(k8s_base.ResourceEventHandler):
return False
return True
def on_finalize(self, loadbalancer_crd):
def on_finalize(self, loadbalancer_crd, *args, **kwargs):
LOG.debug("Deleting the loadbalancer CRD")
if loadbalancer_crd['status'] != {}:

4
kuryr_kubernetes/controller/handlers/machine.py
View File

@ -52,14 +52,14 @@ class MachineHandler(k8s_base.ResourceEventHandler):
# Had to be deleted in the meanwhile.
pass
def on_present(self, machine):
def on_present(self, machine, *args, **kwargs):
effect = self.node_subnets_driver.add_node(machine)
if effect:
# If the change was meaningful we need to make sure all the NPs
# are recalculated to get the new SG rules added.
self._bump_nps()
def on_deleted(self, machine):
def on_deleted(self, machine, *args, **kwargs):
effect = self.node_subnets_driver.delete_node(machine)
if effect:
# If the change was meaningful we need to make sure all the NPs

2
kuryr_kubernetes/controller/handlers/namespace.py
View File

@ -33,7 +33,7 @@ class NamespaceHandler(k8s_base.ResourceEventHandler):
super(NamespaceHandler, self).__init__()
self._drv_project = drivers.NamespaceProjectDriver.get_instance()
def on_present(self, namespace):
def on_present(self, namespace, *args, **kwargs):
ns_labels = namespace['metadata'].get('labels', {})
ns_name = namespace['metadata']['name']
kns_crd = self._get_kns_crd(ns_name)

2
kuryr_kubernetes/controller/handlers/pod_label.py
View File

@ -47,7 +47,7 @@ class PodLabelHandler(k8s_base.ResourceEventHandler):
self._drv_vif_pool.set_vif_driver()
self._drv_lbaas = drivers.LBaaSDriver.get_instance()
def on_present(self, pod):
def on_present(self, pod, *args, **kwargs):
if driver_utils.is_host_network(pod) or not self._has_vifs(pod):
# NOTE(ltomasbo): The event will be retried once the vif handler
# annotates the pod with the pod state.

4
kuryr_kubernetes/controller/handlers/policy.py
View File

@ -34,7 +34,7 @@ class NetworkPolicyHandler(k8s_base.ResourceEventHandler):
self._drv_policy = drivers.NetworkPolicyDriver.get_instance()
self.k8s = clients.get_kubernetes_client()
def on_present(self, policy):
def on_present(self, policy, *args, **kwargs):
LOG.debug("Created or updated: %s", policy)
self._drv_policy.ensure_network_policy(policy)
@ -42,7 +42,7 @@ class NetworkPolicyHandler(k8s_base.ResourceEventHandler):
# Put finalizer in if it's not there already.
self.k8s.add_finalizer(policy, k_const.NETWORKPOLICY_FINALIZER)
def on_finalize(self, policy):
def on_finalize(self, policy, *args, **kwargs):
LOG.debug("Finalizing policy %s", policy)
if not self._drv_policy.release_network_policy(policy):
# KNP was not found, so we need to finalize on our own.

4
kuryr_kubernetes/controller/handlers/vif.py
View File

@ -40,7 +40,7 @@ class VIFHandler(k8s_base.ResourceEventHandler):
OBJECT_KIND = constants.K8S_OBJ_POD
OBJECT_WATCH_PATH = "%s/%s" % (constants.K8S_API_BASE, "pods")
def on_present(self, pod):
def on_present(self, pod, *args, **kwargs):
if (driver_utils.is_host_network(pod) or
not self._is_pod_scheduled(pod)):
# REVISIT(ivc): consider an additional configurable check that
@ -90,7 +90,7 @@ class VIFHandler(k8s_base.ResourceEventHandler):
"KuryrPort CRD: %s", ex)
raise k_exc.ResourceNotReady(pod)
def on_finalize(self, pod):
def on_finalize(self, pod, *args, **kwargs):
k8s = clients.get_kubernetes_client()
try:

24
kuryr_kubernetes/handlers/k8s_base.py
View File

@ -78,30 +78,30 @@ class ResourceEventHandler(dispatch.EventConsumer, health.HealthHandler):
obj = event.get('object')
if 'MODIFIED' == event_type:
if self._check_finalize(obj):
self.on_finalize(obj)
self.on_finalize(obj, *args, **kwargs)
return
self.on_modified(obj)
self.on_present(obj)
self.on_modified(obj, *args, **kwargs)
self.on_present(obj, *args, **kwargs)
elif 'ADDED' == event_type:
if self._check_finalize(obj):
self.on_finalize(obj)
self.on_finalize(obj, *args, **kwargs)
return
self.on_added(obj)
self.on_present(obj)
self.on_added(obj, *args, **kwargs)
self.on_present(obj, *args, **kwargs)
elif 'DELETED' == event_type:
self.on_deleted(obj)
self.on_deleted(obj, *args, **kwargs)
def on_added(self, obj):
def on_added(self, obj, *args, **kwargs):
pass
def on_present(self, obj):
def on_present(self, obj, *args, **kwargs):
pass
def on_modified(self, obj):
def on_modified(self, obj, *args, **kwargs):
pass
def on_deleted(self, obj):
def on_deleted(self, obj, *args, **kwargs):
pass
def on_finalize(self, obj):
def on_finalize(self, obj, *args, **kwargs):
pass

6
kuryr_kubernetes/handlers/retry.py
View File

@ -54,6 +54,7 @@ class Retry(base.EventHandler):
self._k8s = clients.get_kubernetes_client()
def __call__(self, event, *args, **kwargs):
start_time = time.time()
deadline = time.time() + self._timeout
for attempt in itertools.count(1):
if event.get('type') in ['MODIFIED', 'ADDED']:
@ -77,7 +78,10 @@ class Retry(base.EventHandler):
"object. Continuing with handler "
"execution.")
try:
self._handler(event, *args, **kwargs)
info = {
'elapsed': time.time() - start_time
}
self._handler(event, *args, retry_info=info, **kwargs)
break
except os_exc.ConflictException as ex:
if ex.details.startswith('Quota exceeded for resources'):

18
kuryr_kubernetes/tests/unit/controller/handlers/test_kuryrport.py
View File

@ -146,8 +146,10 @@ class TestKuryrPortHandler(test_base.TestCase):
k8s.get.assert_called_once_with(self._pod_uri)
activate_vif.assert_has_calls([mock.call(self._vif1),
mock.call(self._vif2)])
activate_vif.assert_has_calls([mock.call(self._vif1, pod=self._pod,
retry_info=mock.ANY),
mock.call(self._vif2, pod=self._pod,
retry_info=mock.ANY)])
update_crd.assert_called_once_with(self._kp, self._vifs)
@mock.patch('kuryr_kubernetes.clients.get_kubernetes_client')
@ -182,8 +184,10 @@ class TestKuryrPortHandler(test_base.TestCase):
kp.on_present(self._kp)
activate_vif.assert_has_calls([mock.call(self._vif1),
mock.call(self._vif2)])
activate_vif.assert_has_calls([mock.call(self._vif1, pod=mock.ANY,
retry_info=mock.ANY),
mock.call(self._vif2, pod=mock.ANY,
retry_info=mock.ANY)])
@mock.patch('kuryr_kubernetes.controller.drivers.vif_pool.MultiVIFPool.'
'activate_vif')
@ -328,8 +332,10 @@ class TestKuryrPortHandler(test_base.TestCase):
k8s.get.assert_called_once_with(self._pod_uri)
activate_vif.assert_has_calls([mock.call(self._vif1),
mock.call(self._vif2)])
activate_vif.assert_has_calls([mock.call(self._vif1, pod=self._pod,
retry_info=mock.ANY),
mock.call(self._vif2, pod=self._pod,
retry_info=mock.ANY)])
update_crd.assert_called_once_with(self._kp, self._vifs)
create_sgr.assert_called_once_with(self._pod)

8
kuryr_kubernetes/tests/unit/handlers/test_retry.py
View File

@ -95,7 +95,7 @@ class TestRetryHandler(test_base.TestCase):
retry(event)
m_handler.assert_called_once_with(event)
m_handler.assert_called_once_with(event, retry_info=mock.ANY)
m_sleep.assert_not_called()
@mock.patch('itertools.count')
@ -134,7 +134,8 @@ class TestRetryHandler(test_base.TestCase):
retry(event)
m_handler.assert_has_calls([mock.call(event)] * attempts)
m_handler.assert_has_calls([mock.call(
event, retry_info=mock.ANY)] * attempts)
m_sleep.assert_has_calls([
mock.call(deadline, i + 1, failures[i])
for i in range(len(failures))])
@ -155,7 +156,8 @@ class TestRetryHandler(test_base.TestCase):
self.assertRaises(_EX11, retry, event)
m_handler.assert_has_calls([mock.call(event)] * attempts)
m_handler.assert_has_calls([mock.call(
event, retry_info=mock.ANY)] * attempts)
m_sleep.assert_has_calls([
mock.call(deadline, i + 1, failures[i])
for i in range(len(failures))])