366 lines
12 KiB
Python
366 lines
12 KiB
Python
# Copyright 2015 Huawei Technologies Co.,LTD.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from tempfile import NamedTemporaryFile
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from cryptography.hazmat.backends import default_backend
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from cryptography.hazmat.primitives import serialization
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from oslo_log import log as logging
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from magnum.common import cert_manager
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from magnum.common.pythonk8sclient.swagger_client import api_client
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from magnum.common.pythonk8sclient.swagger_client.apis import apiv_api
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from magnum.conductor import utils
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from magnum.objects.bay import Bay
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LOG = logging.getLogger(__name__)
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class K8sAPI(apiv_api.ApivApi):
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def _create_temp_file_with_content(self, content):
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"""Creates temp file and write content to the file.
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:param content: file content
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:returns: temp file
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"""
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try:
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tmp = NamedTemporaryFile(delete=True)
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tmp.write(content)
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tmp.flush()
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except Exception as err:
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LOG.error("Error while creating temp file: %s" % err)
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raise err
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return tmp
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def __init__(self, context, obj):
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self.ca_file = None
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self.cert_file = None
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self.key_file = None
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# If the obj is already a Bay we need not retrieve a Bay.
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if isinstance(obj, Bay):
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bay = obj
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else:
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bay = utils.retrieve_bay(context, obj.bay_uuid)
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if bay.magnum_cert_ref:
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self._create_certificate_files(bay)
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# build a connection with Kubernetes master
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client = api_client.ApiClient(bay.api_address,
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key_file=self.key_file.name,
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cert_file=self.cert_file.name,
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ca_certs=self.ca_file.name)
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super(K8sAPI, self).__init__(client)
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def _create_certificate_files(self, bay):
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"""Read certificate and key for a bay and stores in files.
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:param bay: Bay object
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"""
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magnum_cert_obj = cert_manager.get_backend().CertManager.get_cert(
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bay.magnum_cert_ref, resource_ref=bay.uuid)
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self.cert_file = self._create_temp_file_with_content(
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magnum_cert_obj.get_certificate())
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private_key = serialization.load_pem_private_key(
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magnum_cert_obj.get_private_key(),
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password=magnum_cert_obj.get_private_key_passphrase(),
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backend=default_backend(),
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)
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private_key = private_key.private_bytes(
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encoding=serialization.Encoding.PEM,
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format=serialization.PrivateFormat.PKCS8,
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encryption_algorithm=serialization.NoEncryption())
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self.key_file = self._create_temp_file_with_content(
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private_key)
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ca_cert_obj = cert_manager.get_backend().CertManager.get_cert(
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bay.ca_cert_ref, resource_ref=bay.uuid)
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self.ca_file = self._create_temp_file_with_content(
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ca_cert_obj.get_certificate())
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def __del__(self):
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if self.ca_file:
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self.ca_file.close()
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if self.cert_file:
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self.cert_file.close()
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if self.key_file:
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self.key_file.close()
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def create_k8s_api(context, obj):
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"""Create a kubernetes API client
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Creates connection with Kubernetes master and creates ApivApi instance
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to call Kubernetes APIs.
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:param context: The security context
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:param obj: A bay or a k8s object (Pod, Service, ReplicationController)
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"""
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return K8sAPI(context, obj)
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# NB : This is a place holder class. This class will be
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# removed once the objects from bay code for k8s
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# objects is merged.
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class K8sAPI_Service(apiv_api.ApivApi):
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def _create_temp_file_with_content(self, content):
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"""Creates temp file and write content to the file.
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:param content: file content
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:returns: temp file
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"""
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try:
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tmp = NamedTemporaryFile(delete=True)
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tmp.write(content)
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tmp.flush()
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except Exception as err:
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LOG.error("Error while creating temp file: %s" % err)
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raise err
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return tmp
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def __init__(self, context, bay_uuid):
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self.ca_file = None
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self.cert_file = None
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self.key_file = None
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bay = utils.retrieve_bay(context, bay_uuid)
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if bay.magnum_cert_ref:
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self._create_certificate_files(bay)
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# build a connection with Kubernetes master
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client = api_client.ApiClient(bay.api_address,
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key_file=self.key_file.name,
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cert_file=self.cert_file.name,
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ca_certs=self.ca_file.name)
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super(K8sAPI_Service, self).__init__(client)
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def _create_certificate_files(self, bay):
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"""Read certificate and key for a bay and stores in files.
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:param bay: Bay object
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"""
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magnum_cert_obj = cert_manager.get_backend().CertManager.get_cert(
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bay.magnum_cert_ref)
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self.cert_file = self._create_temp_file_with_content(
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magnum_cert_obj.certificate)
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private_key = serialization.load_pem_private_key(
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magnum_cert_obj.private_key,
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password=magnum_cert_obj.private_key_passphrase,
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backend=default_backend(),
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)
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private_key = private_key.private_bytes(
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encoding=serialization.Encoding.PEM,
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format=serialization.PrivateFormat.PKCS8,
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encryption_algorithm=serialization.NoEncryption())
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self.key_file = self._create_temp_file_with_content(
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private_key)
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ca_cert_obj = cert_manager.get_backend().CertManager.get_cert(
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bay.ca_cert_ref)
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self.ca_file = self._create_temp_file_with_content(
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ca_cert_obj.certificate)
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def __del__(self):
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if self.ca_file:
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self.ca_file.close()
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if self.cert_file:
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self.cert_file.close()
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if self.key_file:
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self.key_file.close()
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def create_k8s_api_service(context, bay_uuid):
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"""Create a kubernetes API client
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Creates connection with Kubernetes master and creates ApivApi instance
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to call Kubernetes APIs.
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:param context: The security context
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:param bay_uuid: Unique identifier for the Bay
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"""
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return K8sAPI_Service(context, bay_uuid)
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# NB : This is a place holder class. This class and create_k8s_api_pod
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# method will be removed once the objects from bay code for k8s
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# objects is merged. These changes are temporary to get the Unit
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# test working.
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class K8sAPI_Pod(apiv_api.ApivApi):
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def _create_temp_file_with_content(self, content):
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"""Creates temp file and write content to the file.
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:param content: file content
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:returns: temp file
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"""
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try:
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tmp = NamedTemporaryFile(delete=True)
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tmp.write(content)
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tmp.flush()
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except Exception as err:
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LOG.error("Error while creating temp file: %s" % err)
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raise err
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return tmp
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def __init__(self, context, bay_uuid):
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self.ca_file = None
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self.cert_file = None
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self.key_file = None
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bay = utils.retrieve_bay(context, bay_uuid)
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if bay.magnum_cert_ref:
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self._create_certificate_files(bay)
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# build a connection with Kubernetes master
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client = api_client.ApiClient(bay.api_address,
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key_file=self.key_file.name,
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cert_file=self.cert_file.name,
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ca_certs=self.ca_file.name)
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super(K8sAPI_Pod, self).__init__(client)
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def _create_certificate_files(self, bay):
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"""Read certificate and key for a bay and stores in files.
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:param bay: Bay object
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"""
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magnum_cert_obj = cert_manager.get_backend().CertManager.get_cert(
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bay.magnum_cert_ref)
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self.cert_file = self._create_temp_file_with_content(
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magnum_cert_obj.certificate)
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private_key = serialization.load_pem_private_key(
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magnum_cert_obj.private_key,
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password=magnum_cert_obj.private_key_passphrase,
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backend=default_backend(),
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)
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private_key = private_key.private_bytes(
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encoding=serialization.Encoding.PEM,
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format=serialization.PrivateFormat.PKCS8,
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encryption_algorithm=serialization.NoEncryption())
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self.key_file = self._create_temp_file_with_content(
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private_key)
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ca_cert_obj = cert_manager.get_backend().CertManager.get_cert(
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bay.ca_cert_ref)
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self.ca_file = self._create_temp_file_with_content(
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ca_cert_obj.certificate)
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def __del__(self):
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if self.ca_file:
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self.ca_file.close()
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if self.cert_file:
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self.cert_file.close()
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if self.key_file:
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self.key_file.close()
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def create_k8s_api_pod(context, bay_uuid):
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"""Create a kubernetes API client
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Creates connection with Kubernetes master and creates ApivApi instance
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to call Kubernetes APIs.
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:param context: The security context
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:param bay_uuid: Unique identifier for the Bay
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"""
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return K8sAPI_Pod(context, bay_uuid)
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# NB : This is a place holder class. This class and create_k8s_api_rc
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# method will be removed once the objects from bay code for k8s
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# objects is merged. These changes are temporary to get the Unit
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# test working.
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class K8sAPI_RC(apiv_api.ApivApi):
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def _create_temp_file_with_content(self, content):
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"""Creates temp file and write content to the file.
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:param content: file content
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:returns: temp file
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"""
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try:
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tmp = NamedTemporaryFile(delete=True)
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tmp.write(content)
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tmp.flush()
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except Exception as err:
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LOG.error("Error while creating temp file: %s" % err)
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raise err
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return tmp
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def __init__(self, context, bay_uuid):
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self.ca_file = None
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self.cert_file = None
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self.key_file = None
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bay = utils.retrieve_bay(context, bay_uuid)
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if bay.magnum_cert_ref:
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self._create_certificate_files(bay)
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# build a connection with Kubernetes master
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client = api_client.ApiClient(bay.api_address,
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key_file=self.key_file.name,
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cert_file=self.cert_file.name,
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ca_certs=self.ca_file.name)
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super(K8sAPI_RC, self).__init__(client)
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def _create_certificate_files(self, bay):
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"""Read certificate and key for a bay and stores in files.
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:param bay: Bay object
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"""
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magnum_cert_obj = cert_manager.get_backend().CertManager.get_cert(
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bay.magnum_cert_ref)
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self.cert_file = self._create_temp_file_with_content(
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magnum_cert_obj.certificate)
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private_key = serialization.load_pem_private_key(
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magnum_cert_obj.private_key,
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password=magnum_cert_obj.private_key_passphrase,
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backend=default_backend(),
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)
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private_key = private_key.private_bytes(
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encoding=serialization.Encoding.PEM,
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format=serialization.PrivateFormat.PKCS8,
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encryption_algorithm=serialization.NoEncryption())
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self.key_file = self._create_temp_file_with_content(
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private_key)
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ca_cert_obj = cert_manager.get_backend().CertManager.get_cert(
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bay.ca_cert_ref)
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self.ca_file = self._create_temp_file_with_content(
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ca_cert_obj.certificate)
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def __del__(self):
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if self.ca_file:
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self.ca_file.close()
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if self.cert_file:
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self.cert_file.close()
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if self.key_file:
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self.key_file.close()
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def create_k8s_api_rc(context, bay_uuid):
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"""Create a kubernetes API client
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Creates connection with Kubernetes master and creates ApivApi instance
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to call Kubernetes APIs.
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:param context: The security context
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:param bay_uuid: Unique identifier for the Bay
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"""
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return K8sAPI_RC(context, bay_uuid)
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