Container Infrastructure Management Service for OpenStack
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# Copyright 2015 Huawei Technologies Co.,LTD.
#
# 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 tempfile import NamedTemporaryFile
from oslo_log import log as logging
from magnum.common.pythonk8sclient.swagger_client import api_client
from magnum.common.pythonk8sclient.swagger_client.apis import apiv_api
from magnum.conductor.handlers.common import cert_manager
LOG = logging.getLogger(__name__)
class K8sAPI(apiv_api.ApivApi):
def _create_temp_file_with_content(self, content):
"""Creates temp file and write content to the file.
:param content: file content
:returns: temp file
"""
try:
tmp = NamedTemporaryFile(delete=True)
tmp.write(content)
tmp.flush()
except Exception as err:
LOG.error("Error while creating temp file: %s", err)
raise err
return tmp
def __init__(self, context, bay):
self.ca_file = None
self.cert_file = None
self.key_file = None
if bay.magnum_cert_ref:
self._create_certificate_files(bay)
# build a connection with Kubernetes master
client = api_client.ApiClient(bay.api_address,
key_file=self.key_file.name,
cert_file=self.cert_file.name,
ca_certs=self.ca_file.name)
super(K8sAPI, self).__init__(client)
def _create_certificate_files(self, bay):
"""Read certificate and key for a bay and stores in files.
:param bay: Bay object
"""
magnum_cert_obj = cert_manager.get_bay_magnum_cert(bay)
self.cert_file = self._create_temp_file_with_content(
magnum_cert_obj.get_certificate())
private_key = magnum_cert_obj.get_decrypted_private_key()
self.key_file = self._create_temp_file_with_content(
private_key)
ca_cert_obj = cert_manager.get_bay_ca_certificate(bay)
self.ca_file = self._create_temp_file_with_content(
ca_cert_obj.get_certificate())
def __del__(self):
if self.ca_file:
self.ca_file.close()
if self.cert_file:
self.cert_file.close()
if self.key_file:
self.key_file.close()
def create_k8s_api(context, bay):
"""Create a kubernetes API client
Creates connection with Kubernetes master and creates ApivApi instance
to call Kubernetes APIs.
:param context: The security context
:param bay: Bay object
"""
return K8sAPI(context, bay)