3251d7b641
Pbr is a very heavy package to depend on. It requires git-core, which is 16 MiB on my Fedora. We only use it to detect the version, which can be done without pbr using a much lighter importlib_metadata. Copied from https://review.opendev.org/c/openstack/osprofiler/+/739379 Change-Id: I5f434e6bfde6f645804941f3a36d5458a28270e7
286 lines
11 KiB
Python
286 lines
11 KiB
Python
# Copyright 2013 Rackspace, Inc.
|
|
#
|
|
# 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.
|
|
|
|
from oslo_config import cfg
|
|
from oslo_log import log
|
|
from oslo_serialization import jsonutils
|
|
import requests
|
|
import tenacity
|
|
|
|
from ironic_python_agent import encoding
|
|
from ironic_python_agent import errors
|
|
from ironic_python_agent import netutils
|
|
from ironic_python_agent import utils
|
|
from ironic_python_agent import version
|
|
|
|
|
|
CONF = cfg.CONF
|
|
LOG = log.getLogger(__name__)
|
|
|
|
# TODO(TheJulia): This should be increased at some point.
|
|
MIN_IRONIC_VERSION = (1, 31)
|
|
AGENT_VERSION_IRONIC_VERSION = (1, 36)
|
|
AGENT_TOKEN_IRONIC_VERSION = (1, 62)
|
|
AGENT_VERIFY_CA_IRONIC_VERSION = (1, 68)
|
|
# NOTE(dtantsur): change this constant every time you add support for more
|
|
# versions to ensure that we send the highest version we know about.
|
|
MAX_KNOWN_VERSION = AGENT_VERIFY_CA_IRONIC_VERSION
|
|
|
|
|
|
class APIClient(object):
|
|
api_version = 'v1'
|
|
lookup_api = '/%s/lookup' % api_version
|
|
heartbeat_api = '/%s/heartbeat/{uuid}' % api_version
|
|
_ironic_api_version = None
|
|
agent_token = None
|
|
|
|
def __init__(self, api_url):
|
|
self.api_url = api_url.rstrip('/')
|
|
|
|
# Only keep alive a maximum of 2 connections to the API. More will be
|
|
# opened if they are needed, but they will be closed immediately after
|
|
# use.
|
|
adapter = requests.adapters.HTTPAdapter(pool_connections=2,
|
|
pool_maxsize=2)
|
|
self.session = requests.Session()
|
|
self.session.mount(self.api_url, adapter)
|
|
|
|
self.encoder = encoding.RESTJSONEncoder()
|
|
|
|
def _request(self, method, path, data=None, headers=None, **kwargs):
|
|
request_url = '{api_url}{path}'.format(api_url=self.api_url, path=path)
|
|
|
|
if data is not None:
|
|
data = self.encoder.encode(data)
|
|
|
|
headers = headers or {}
|
|
headers.update({
|
|
'Content-Type': 'application/json',
|
|
'Accept': 'application/json',
|
|
})
|
|
if CONF.global_request_id:
|
|
headers["X-OpenStack-Request-ID"] = CONF.global_request_id
|
|
|
|
verify, cert = utils.get_ssl_client_options(CONF)
|
|
return self.session.request(method,
|
|
request_url,
|
|
headers=headers,
|
|
data=data,
|
|
verify=verify,
|
|
cert=cert,
|
|
**kwargs)
|
|
|
|
def _get_ironic_api_version_header(self, version=None):
|
|
if version is None:
|
|
ironic_version = self._get_ironic_api_version()
|
|
version = min(ironic_version, AGENT_TOKEN_IRONIC_VERSION)
|
|
return {'X-OpenStack-Ironic-API-Version': '%d.%d' % version}
|
|
|
|
def _get_ironic_api_version(self):
|
|
if self._ironic_api_version:
|
|
return self._ironic_api_version
|
|
|
|
if CONF.ironic_api_version is not None:
|
|
try:
|
|
version = CONF.ironic_api_version.split('.')
|
|
self._ironic_api_version = (int(version[0]), int(version[1]))
|
|
return self._ironic_api_version
|
|
except Exception:
|
|
LOG.exception("An error occurred while attempting to parse"
|
|
"the ironic_api_version. Will fall back to "
|
|
"auto-detection")
|
|
|
|
try:
|
|
response = self._request('GET', '/')
|
|
data = jsonutils.loads(response.content)
|
|
version = data['default_version']['version'].split('.')
|
|
self._ironic_api_version = (int(version[0]), int(version[1]))
|
|
return self._ironic_api_version
|
|
except Exception:
|
|
LOG.exception("An error occurred while attempting to discover "
|
|
"the available Ironic API versions, falling "
|
|
"back to using version %s",
|
|
".".join(map(str, MIN_IRONIC_VERSION)))
|
|
return MIN_IRONIC_VERSION
|
|
|
|
def supports_auto_tls(self):
|
|
return self._get_ironic_api_version() >= AGENT_VERIFY_CA_IRONIC_VERSION
|
|
|
|
def _error_from_response(self, response):
|
|
try:
|
|
body = response.json()
|
|
except ValueError:
|
|
text = response.text
|
|
else:
|
|
body = body.get('error_message', body)
|
|
if not isinstance(body, dict):
|
|
# Old ironic format
|
|
try:
|
|
body = jsonutils.loads(body)
|
|
except ValueError:
|
|
body = {}
|
|
|
|
text = (body.get('faultstring')
|
|
or body.get('title')
|
|
or response.text)
|
|
|
|
return 'Error %d: %s' % (response.status_code, text)
|
|
|
|
def heartbeat(self, uuid, advertise_address, advertise_protocol='http',
|
|
generated_cert=None):
|
|
path = self.heartbeat_api.format(uuid=uuid)
|
|
|
|
data = {'callback_url': self._get_agent_url(advertise_address,
|
|
advertise_protocol)}
|
|
|
|
api_ver = self._get_ironic_api_version()
|
|
|
|
if api_ver >= AGENT_TOKEN_IRONIC_VERSION:
|
|
data['agent_token'] = self.agent_token
|
|
|
|
if api_ver >= AGENT_VERSION_IRONIC_VERSION:
|
|
data['agent_version'] = version.__version__
|
|
|
|
if api_ver >= AGENT_VERIFY_CA_IRONIC_VERSION and generated_cert:
|
|
data['agent_verify_ca'] = generated_cert
|
|
|
|
api_ver = min(MAX_KNOWN_VERSION, api_ver)
|
|
headers = self._get_ironic_api_version_header(api_ver)
|
|
|
|
LOG.debug('Heartbeat: announcing callback URL %s, API version is '
|
|
'%d.%d', data['callback_url'], *api_ver)
|
|
try:
|
|
response = self._request('POST', path, data=data, headers=headers)
|
|
except requests.exceptions.ConnectionError as e:
|
|
raise errors.HeartbeatConnectionError(str(e))
|
|
except Exception as e:
|
|
raise errors.HeartbeatError(str(e))
|
|
|
|
if response.status_code == requests.codes.CONFLICT:
|
|
error = self._error_from_response(response)
|
|
raise errors.HeartbeatConflictError(error)
|
|
elif response.status_code != requests.codes.ACCEPTED:
|
|
error = self._error_from_response(response)
|
|
raise errors.HeartbeatError(error)
|
|
|
|
def lookup_node(self, hardware_info, timeout, starting_interval,
|
|
node_uuid=None, max_interval=30):
|
|
retry = tenacity.retry(
|
|
retry=tenacity.retry_if_result(lambda r: r is False),
|
|
stop=tenacity.stop_after_delay(timeout),
|
|
wait=tenacity.wait_random_exponential(min=starting_interval,
|
|
max=max_interval),
|
|
reraise=True)
|
|
try:
|
|
return retry(self._do_lookup)(hardware_info=hardware_info,
|
|
node_uuid=node_uuid)
|
|
except tenacity.RetryError:
|
|
raise errors.LookupNodeError('Could not look up node info. Check '
|
|
'logs for details.')
|
|
|
|
def _do_lookup(self, hardware_info, node_uuid):
|
|
"""The actual call to lookup a node."""
|
|
params = {
|
|
'addresses': ','.join(iface.mac_address
|
|
for iface in hardware_info['interfaces']
|
|
if iface.mac_address)
|
|
}
|
|
if node_uuid:
|
|
params['node_uuid'] = node_uuid
|
|
|
|
LOG.debug('Looking up node with addresses %r and UUID %s at %s',
|
|
params['addresses'], node_uuid, self.api_url)
|
|
|
|
try:
|
|
response = self._request(
|
|
'GET', self.lookup_api,
|
|
headers=self._get_ironic_api_version_header(),
|
|
params=params)
|
|
except (requests.exceptions.Timeout,
|
|
requests.exceptions.ConnectTimeout,
|
|
requests.exceptions.ConnectionError,
|
|
requests.exceptions.ReadTimeout,
|
|
requests.exceptions.HTTPError) as err:
|
|
LOG.warning(
|
|
'Error detected while attempting to perform lookup '
|
|
'with %s, retrying. Error: %s', self.api_url, err
|
|
)
|
|
return False
|
|
except Exception as err:
|
|
# NOTE(TheJulia): If you're looking here, and you're wondering
|
|
# why the retry logic is not working or your investigating a weird
|
|
# error or even IPA just exiting,
|
|
# See https://storyboard.openstack.org/#!/story/2007968
|
|
# To be clear, we're going to try to provide as much detail as
|
|
# possible in the exit handling
|
|
msg = ('Unhandled error looking up node with addresses {} at '
|
|
'{}: {}'.format(params['addresses'], self.api_url, err))
|
|
# No matter what we do at this point, IPA is going to exit.
|
|
# This is because we don't know why the exception occured and
|
|
# we likely should not try to retry as such.
|
|
# We will attempt to provide as much detail to the logs as
|
|
# possible as to what occured, although depending on the logging
|
|
# subsystem, additional errors can occur, thus the additional
|
|
# handling below.
|
|
try:
|
|
LOG.exception(msg)
|
|
return False
|
|
except Exception as exc_err:
|
|
LOG.error(msg)
|
|
exc_msg = ('Unexpected exception occured while trying to '
|
|
'log additional detail. Error: {}'.format(exc_err))
|
|
LOG.error(exc_msg)
|
|
raise errors.LookupNodeError(msg)
|
|
|
|
if response.status_code != requests.codes.OK:
|
|
LOG.warning(
|
|
'Failed looking up node with addresses %r at %s. '
|
|
'%s. Check if inspection has completed.',
|
|
params['addresses'], self.api_url,
|
|
self._error_from_response(response)
|
|
)
|
|
return False
|
|
|
|
try:
|
|
content = jsonutils.loads(response.content)
|
|
except Exception as e:
|
|
LOG.warning('Error decoding response: %s', e)
|
|
return False
|
|
|
|
# Check for valid response data
|
|
if 'node' not in content or 'uuid' not in content['node']:
|
|
LOG.warning(
|
|
'Got invalid node data in response to query for node '
|
|
'with addresses %r from %s: %s',
|
|
params['addresses'], self.api_url, content,
|
|
)
|
|
return False
|
|
|
|
if 'config' not in content:
|
|
# Old API
|
|
try:
|
|
content['config'] = {'heartbeat_timeout':
|
|
content.pop('heartbeat_timeout')}
|
|
except KeyError:
|
|
LOG.warning('Got invalid heartbeat from the API: %s', content)
|
|
return False
|
|
|
|
# Got valid content
|
|
return content
|
|
|
|
def _get_agent_url(self, advertise_address, advertise_protocol='http'):
|
|
return '{}://{}:{}'.format(advertise_protocol,
|
|
netutils.wrap_ipv6(advertise_address[0]),
|
|
advertise_address[1])
|