67 lines
2.3 KiB
Python
67 lines
2.3 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 contextlib
|
|
|
|
from oslo_serialization import jsonutils
|
|
import requests
|
|
|
|
from kuryr_kubernetes import exceptions as exc
|
|
|
|
|
|
class K8sClient(object):
|
|
# REVISIT(ivc): replace with python-k8sclient if it could be extended
|
|
# with 'WATCH' support
|
|
|
|
def __init__(self, base_url):
|
|
self._base_url = base_url
|
|
|
|
def get(self, path):
|
|
url = self._base_url + path
|
|
response = requests.get(url)
|
|
if not response.ok:
|
|
raise exc.K8sClientException(response.text)
|
|
return response.json()
|
|
|
|
def annotate(self, path, annotations):
|
|
url = self._base_url + path
|
|
data = jsonutils.dumps({
|
|
"metadata": {
|
|
"annotations": annotations
|
|
}
|
|
})
|
|
response = requests.patch(url, data=data, headers={
|
|
'Content-Type': 'application/merge-patch+json',
|
|
'Accept': 'application/json',
|
|
})
|
|
if not response.ok:
|
|
raise exc.K8sClientException(response.text)
|
|
return response.json()['metadata']['annotations']
|
|
|
|
def watch(self, path):
|
|
params = {'watch': 'true'}
|
|
url = self._base_url + path
|
|
|
|
# TODO(ivc): handle connection errors and retry on failure
|
|
while True:
|
|
with contextlib.closing(requests.get(url, params=params,
|
|
stream=True)) as response:
|
|
if not response.ok:
|
|
raise exc.K8sClientException(response.text)
|
|
for line in response.iter_lines(delimiter='\n'):
|
|
line = line.strip()
|
|
if line:
|
|
yield jsonutils.loads(line)
|