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# Copyright (c) 2021 Dell Inc. or its subsidiaries.
#
# 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 json
from oslo_config import cfg
from oslo_log import log as logging
from oslo_serialization import base64
import requests
import tenacity
from ironic.common import exception
from ironic.common.i18n import _
from ironic.common import swift
LOG = logging.getLogger(__name__)
CONF = cfg.CONF
def save_configuration(task, url, data):
"""Store configuration mold to indicated location.
:param task: A TaskManager instance.
:param name: URL of the configuration item to save to.
:param data: Content of JSON data to save.
:raises IronicException: If using Swift storage and no authentication
token found in task's context.
:raises HTTPError: If failed to complete HTTP request.
"""
@tenacity.retry(
retry=tenacity.retry_if_exception_type(
requests.exceptions.ConnectionError),
stop=tenacity.stop_after_attempt(CONF.molds.retry_attempts),
wait=tenacity.wait_fixed(CONF.molds.retry_interval),
reraise=True
)
def _request(url, data, auth_header):
return requests.put(
url, data=json.dumps(data, indent=2), headers=auth_header)
auth_header = _get_auth_header(task)
response = _request(url, data, auth_header)
response.raise_for_status()
def get_configuration(task, url):
"""Gets configuration mold from indicated location.
:param task: A TaskManager instance.
:param url: URL of the configuration item to get.
:returns: JSON configuration mold
:raises IronicException: If using Swift storage and no authentication
token found in task's context.
:raises HTTPError: If failed to complete HTTP request.
"""
@tenacity.retry(
retry=tenacity.retry_if_exception_type(
requests.exceptions.ConnectionError),
stop=tenacity.stop_after_attempt(CONF.molds.retry_attempts),
wait=tenacity.wait_fixed(CONF.molds.retry_interval),
reraise=True
)
def _request(url, auth_header):
return requests.get(url, headers=auth_header)
auth_header = _get_auth_header(task)
response = _request(url, auth_header)
if response.status_code == requests.codes.ok:
if not response.content:
raise exception.IronicException(_(
"Configuration mold for node %(node_uuid)s at %(url)s is "
"empty") % {'node_uuid': task.node.uuid, 'url': url})
try:
return response.json()
except json.decoder.JSONDecodeError as jde:
raise exception.IronicException(_(
"Configuration mold for node %(node_uuid)s at %(url)s has "
"invalid JSON: %(error)s)")
% {'node_uuid': task.node.uuid, 'url': url, 'error': jde})
response.raise_for_status()
def _get_auth_header(task):
"""Based on setup of configuration mold storage gets authentication header
:param task: A TaskManager instance.
:raises IronicException: If using Swift storage and no authentication
token found in task's context.
"""
auth_header = None
if CONF.molds.storage == 'swift':
# TODO(ajya) Need to update to use Swift client and context session
auth_token = swift.get_swift_session().get_token()
if auth_token:
auth_header = {'X-Auth-Token': auth_token}
else:
raise exception.IronicException(
_('Missing auth_token for configuration mold access for node '
'%s') % task.node.uuid)
elif CONF.molds.storage == 'http':
if CONF.molds.user and CONF.molds.password:
auth_header = {'Authorization': 'Basic %s'
% base64.encode_as_text(
'%s:%s' % (CONF.molds.user,
CONF.molds.password))}
return auth_header
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