ded6b6debc
Since we already migrated fully to Python3, it's time to also remove bits needed for Python2. One of those libs is six. Change-Id: Ib984d7b4b3c1048ed091c78986c634689a8ace8c
118 lines
3.6 KiB
Python
118 lines
3.6 KiB
Python
# Copyright (c) 2016 Mirantis, Inc.
|
|
# 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.
|
|
|
|
import abc
|
|
|
|
from os_vif import objects as obj_vif
|
|
from oslo_log import log as logging
|
|
from oslo_serialization import jsonutils
|
|
|
|
from kuryr_kubernetes import constants as k_const
|
|
from kuryr_kubernetes.handlers import dispatch as k_dis
|
|
from kuryr_kubernetes.handlers import k8s_base
|
|
from kuryr_kubernetes import utils
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class CNIHandlerBase(k8s_base.ResourceEventHandler, metaclass=abc.ABCMeta):
|
|
OBJECT_KIND = k_const.K8S_OBJ_POD
|
|
|
|
def __init__(self, cni, on_done):
|
|
self._cni = cni
|
|
self._callback = on_done
|
|
self._vifs = {}
|
|
|
|
def on_present(self, pod):
|
|
vifs = self._get_vifs(pod)
|
|
|
|
if self.should_callback(pod, vifs):
|
|
self.callback()
|
|
|
|
@abc.abstractmethod
|
|
def should_callback(self, pod, vifs):
|
|
"""Called after all vifs have been processed
|
|
|
|
Should determine if the CNI is ready to call the callback
|
|
|
|
:param pod: dict containing Kubernetes Pod object
|
|
:param vifs: dict containing os_vif VIF objects and ifnames
|
|
:returns True/False
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
@abc.abstractmethod
|
|
def callback(self):
|
|
"""Called if should_callback returns True"""
|
|
raise NotImplementedError()
|
|
|
|
def _get_vifs(self, pod):
|
|
# TODO(ivc): same as VIFHandler._get_vif
|
|
try:
|
|
annotations = pod['metadata']['annotations']
|
|
state_annotation = annotations[k_const.K8S_ANNOTATION_VIF]
|
|
except KeyError:
|
|
return {}
|
|
state_annotation = jsonutils.loads(state_annotation)
|
|
state = utils.extract_pod_annotation(state_annotation)
|
|
vifs_dict = state.vifs
|
|
LOG.debug("Got VIFs from annotation: %r", vifs_dict)
|
|
return vifs_dict
|
|
|
|
def _get_inst(self, pod):
|
|
return obj_vif.instance_info.InstanceInfo(
|
|
uuid=pod['metadata']['uid'], name=pod['metadata']['name'])
|
|
|
|
|
|
class CallbackHandler(CNIHandlerBase):
|
|
|
|
def __init__(self, on_vif, on_del=None):
|
|
super(CallbackHandler, self).__init__(None, on_vif)
|
|
self._del_callback = on_del
|
|
self._pod = None
|
|
self._callback_vifs = None
|
|
|
|
def should_callback(self, pod, vifs):
|
|
"""Called after all vifs have been processed
|
|
|
|
Calls callback if there was at least one vif in the Pod
|
|
|
|
:param pod: dict containing Kubernetes Pod object
|
|
:param vifs: dict containing os_vif VIF objects and ifnames
|
|
:returns True/False
|
|
"""
|
|
self._pod = pod
|
|
self._callback_vifs = vifs
|
|
if vifs:
|
|
return True
|
|
return False
|
|
|
|
def callback(self):
|
|
self._callback(self._pod, self._callback_vifs)
|
|
|
|
def on_deleted(self, pod):
|
|
LOG.debug("Got pod %s deletion event.", pod['metadata']['name'])
|
|
if self._del_callback:
|
|
self._del_callback(pod)
|
|
|
|
|
|
class CNIPipeline(k_dis.EventPipeline):
|
|
|
|
def _wrap_dispatcher(self, dispatcher):
|
|
return dispatcher
|
|
|
|
def _wrap_consumer(self, consumer):
|
|
return consumer
|