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# (c) Copyright 2014-2016 Hewlett-Packard Development Company, L.P.
#
# 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 requests
from oslo_serialization import jsonutils as json
from freezerclient import exceptions
from freezerclient import utils
class SessionManager(object):
def __init__(self, client, verify=True):
self.client = client
self.endpoint = '{0}/v2/{1}/sessions/'.format(
self.client.endpoint, self.client.project_id)
self.verify = verify
@property
def headers(self):
return utils.create_headers_for_request(self.client.auth_token)
def create(self, doc, session_id=''):
session_id = session_id or doc.get('session_id', '')
endpoint = self.endpoint + session_id
r = requests.post(endpoint,
data=json.dumps(doc),
headers=self.headers,
verify=self.verify)
if r.status_code != 201:
raise exceptions.ApiClientException(r)
session_id = r.json()['session_id']
return session_id
def delete(self, session_id):
endpoint = self.endpoint + session_id
r = requests.delete(endpoint, headers=self.headers, verify=self.verify)
if r.status_code != 204:
raise exceptions.ApiClientException(r)
def list_all(self, limit=10, offset=0, search=None):
data = json.dumps(search) if search else None
query = {'limit': int(limit), 'offset': int(offset)}
r = requests.get(self.endpoint, headers=self.headers,
params=query, data=data, verify=self.verify)
if r.status_code != 200:
raise exceptions.ApiClientException(r)
return r.json()['sessions']
def list(self, limit=10, offset=0, search={}):
new_search = search.copy()
new_search['match'] = search.get('match', [])
return self.list_all(limit, offset, new_search)
def get(self, session_id):
endpoint = self.endpoint + session_id
r = requests.get(endpoint, headers=self.headers, verify=self.verify)
if r.status_code == 200:
return r.json()
if r.status_code == 404:
return None
raise exceptions.ApiClientException(r)
def update(self, session_id, update_doc):
endpoint = self.endpoint + session_id
r = requests.patch(endpoint,
headers=self.headers,
data=json.dumps(update_doc),
verify=self.verify)
if r.status_code != 200:
raise exceptions.ApiClientException(r)
return r.json()['version']
def add_job(self, session_id, job_id):
# endpoint /v2/sessions/{sessions_id}/jobs/{job_id}
endpoint = '{0}{1}/jobs/{2}'.format(self.endpoint, session_id, job_id)
r = requests.put(endpoint,
headers=self.headers, verify=self.verify)
if r.status_code != 204:
raise exceptions.ApiClientException(r)
return
def remove_job(self, session_id, job_id):
# endpoint /v2/sessions/{sessions_id}/jobs/{job_id}
endpoint = '{0}{1}/jobs/{2}'.format(self.endpoint, session_id, job_id)
retry = 5
r = ''
while retry:
r = requests.delete(endpoint,
headers=self.headers, verify=self.verify)
if r.status_code == 204:
return
retry -= 1
raise exceptions.ApiClientException(r)
def start_session(self, session_id, job_id, session_tag):
"""
Informs the api that the client is starting the session
identified by the session_id and request the session_tag
to be incremented up to the requested value.
The returned session_id could be:
* current_tag + 1 if the session has started
* > current_tag + 1 if the action had already been started
by some other node and this node was out of sync
:param session_id:
:param job_id:
:param session_tag: the new session_id
:return: the response obj:
{ result: string 'running' or 'error',
'session_tag': the new session_tag )
"""
# endpoint /v2/sessions/{sessions_id}/action
endpoint = '{0}{1}/action'.format(self.endpoint, session_id)
doc = {"start": {
"job_id": job_id,
"current_tag": session_tag
}}
r = requests.post(endpoint,
headers=self.headers,
data=json.dumps(doc),
verify=self.verify)
if r.status_code != 202:
raise exceptions.ApiClientException(r)
return r.json()
def end_session(self, session_id, job_id, session_tag, result):
"""
Informs the freezer service that the job has ended.
Provides information about the job's result and the session tag
:param session_id:
:param job_id:
:param session_tag:
:param result:
:return:
"""
# endpoint /v2/sessions/{sessions_id}/action
endpoint = '{0}{1}/action'.format(self.endpoint, session_id)
doc = {"end": {
"job_id": job_id,
"current_tag": session_tag,
"result": result
}}
r = requests.post(endpoint,
headers=self.headers,
data=json.dumps(doc),
verify=self.verify)
if r.status_code != 202:
raise exceptions.ApiClientException(r)
return r.json()
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