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.
import tempfile
from kubernetes import client as k8s_config
from kubernetes.client import api_client
from kubernetes.client.apis import core_v1_api
from kubernetes.client import configuration as k8s_configuration
from kubernetes.client import rest
from oslo_log import log as logging
from magnum.conductor.handlers.common.cert_manager import create_client_files
LOG = logging.getLogger(__name__)
class ApiClient(api_client.ApiClient):
def __init__(self, configuration=None, header_name=None,
header_value=None, cookie=None):
if configuration is None:
configuration = k8s_configuration.Configuration()
self.configuration = configuration
self.rest_client = rest.RESTClientObject(configuration)
self.default_headers = {}
if header_name is not None:
self.default_headers[header_name] = header_value
self.cookie = cookie
def __del__(self):
pass
def call_api(self, resource_path, method,
path_params=None, query_params=None, header_params=None,
body=None, post_params=None, files=None, async=None,
response_type=None, auth_settings=None, async_req=None,
_return_http_data_only=None, collection_formats=None,
_preload_content=True, _request_timeout=None):
"""Makes http request (synchronous) and return the deserialized data
:param resource_path: Path to method endpoint.
:param method: Method to call.
:param path_params: Path parameters in the url.
:param query_params: Query parameters in the url.
:param header_params: Header parameters to be
placed in the request header.
:param body: Request body.
:param post_params dict: Request post form parameters,
for `application/x-www-form-urlencoded`, `multipart/form-data`.
:param auth_settings list: Auth Settings names for the request.
:param response: Response data type.
:param files dict: key -> filename, value -> filepath,
for `multipart/form-data`.
:param async bool: to be compatible with k8s-client before 7.0.0
:param async_req bool: execute request asynchronously
:param _return_http_data_only: response data without head status code
and headers
:param collection_formats: dict of collection formats for path, query,
header, and post parameters.
:param _preload_content: if False, the urllib3.HTTPResponse object will
be returned without reading/decoding response
data. Default is True.
:param _request_timeout: timeout setting for this request. If one
number provided, it will be total request
timeout. It can also be a pair (tuple) of
(connection, read) timeouts.
:return: The method will return the response directly
"""
return self.__call_api(resource_path, method,
path_params, query_params, header_params,
body, post_params, files,
response_type, auth_settings,
_return_http_data_only, collection_formats,
_preload_content, _request_timeout)
class K8sAPI(core_v1_api.CoreV1Api):
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 = tempfile.NamedTemporaryFile(delete=True)
tmp.write(content)
tmp.flush()
except Exception as err:
LOG.error("Error while creating temp file: %s", err)
raise
return tmp
def __init__(self, context, cluster):
self.ca_file = None
self.cert_file = None
self.key_file = None
if cluster.magnum_cert_ref:
(self.ca_file, self.key_file,
self.cert_file) = create_client_files(cluster, context)
config = k8s_config.Configuration()
config.host = cluster.api_address
config.ssl_ca_cert = self.ca_file.name
config.cert_file = self.cert_file.name
config.key_file = self.key_file.name
# build a connection with Kubernetes master
client = ApiClient(configuration=config)
super(K8sAPI, self).__init__(client)
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, cluster):
"""Create a kubernetes API client
Creates connection with Kubernetes master and creates ApivApi instance
to call Kubernetes APIs.
:param context: The security context
:param cluster: Cluster object
"""
return K8sAPI(context, cluster)