d5d4ef1f9d
This patch adds a new subnet driver that creates a new network for each created k8s namespace. It makes use of K8s CRDs to store the information about the network resources created for each namespace Partially Implements: blueprint network-namespace Change-Id: I7988e1da7a9ed57f29c85ddcd99bb2c87808010e
73 lines
2.7 KiB
Python
73 lines
2.7 KiB
Python
# Copyright 2018 Red Hat, 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 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.
|
|
|
|
from oslo_log import log as logging
|
|
|
|
from kuryr_kubernetes import clients
|
|
from kuryr_kubernetes import constants
|
|
from kuryr_kubernetes.controller.drivers import base as drivers
|
|
from kuryr_kubernetes import exceptions
|
|
from kuryr_kubernetes.handlers import k8s_base
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class NamespaceHandler(k8s_base.ResourceEventHandler):
|
|
OBJECT_KIND = constants.K8S_OBJ_NAMESPACE
|
|
OBJECT_WATCH_PATH = "%s/%s" % (constants.K8S_API_BASE, "namespaces")
|
|
|
|
def __init__(self):
|
|
super(NamespaceHandler, self).__init__()
|
|
self._drv_project = drivers.PodProjectDriver.get_instance()
|
|
self._drv_subnets = drivers.PodSubnetsDriver.get_instance()
|
|
self._drv_sg = drivers.PodSecurityGroupsDriver.get_instance()
|
|
|
|
def on_added(self, namespace):
|
|
ns_name = namespace['metadata']['name']
|
|
net_crd = self._get_net_crd(namespace)
|
|
if net_crd:
|
|
LOG.debug("CRD existing at the new namespace")
|
|
return
|
|
|
|
LOG.debug("Creating network resources for namespace: %s", ns_name)
|
|
net_crd = self._drv_subnets.create_namespace_network(ns_name)
|
|
try:
|
|
self._set_net_crd(namespace, net_crd)
|
|
except exceptions.K8sClientException:
|
|
LOG.exception("Failed to set annotation")
|
|
crd_spec = net_crd['spec']
|
|
self._drv_subnets.rollback_network_resources(
|
|
crd_spec['routerId'], crd_spec['netId'], crd_spec['subnetId'],
|
|
ns_name)
|
|
|
|
def on_deleted(self, namespace):
|
|
pass
|
|
|
|
def _get_net_crd(self, namespace):
|
|
try:
|
|
annotations = namespace['metadata']['annotations']
|
|
net_crd = annotations[constants.K8S_ANNOTATION_NET_CRD]
|
|
except KeyError:
|
|
return None
|
|
return net_crd
|
|
|
|
def _set_net_crd(self, namespace, net_crd):
|
|
LOG.debug("Setting CRD annotations: %s", net_crd)
|
|
|
|
k8s = clients.get_kubernetes_client()
|
|
k8s.annotate(namespace['metadata']['selfLink'],
|
|
{constants.K8S_ANNOTATION_NET_CRD:
|
|
net_crd['metadata']['name']},
|
|
resource_version=namespace['metadata']['resourceVersion'])
|