Hardware introspection daemon for OpenStack Ironic
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ironic-inspector/ironic_inspector/utils.py

241 lines
7.4 KiB

# 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 datetime
import logging as pylog
import re
import futurist
from keystonemiddleware import auth_token
from oslo_config import cfg
from oslo_log import log
from oslo_middleware import cors as cors_middleware
import pytz
import six
from ironic_inspector.common.i18n import _, _LE
from ironic_inspector import conf # noqa
CONF = cfg.CONF
_EXECUTOR = None
def get_ipmi_address_from_data(introspection_data):
try:
return introspection_data['inventory']['bmc_address']
except KeyError:
return introspection_data.get('ipmi_address')
def get_pxe_mac(introspection_data):
pxe_mac = introspection_data.get('boot_interface')
if pxe_mac and '-' in pxe_mac:
# pxelinux format: 01-aa-bb-cc-dd-ee-ff
pxe_mac = pxe_mac.split('-', 1)[1]
pxe_mac = pxe_mac.replace('-', ':').lower()
return pxe_mac
def processing_logger_prefix(data=None, node_info=None):
"""Calculate prefix for logging.
Tries to use:
* node UUID,
* node PXE MAC,
* node BMC address
:param data: introspection data
:param node_info: NodeInfo or ironic node object
:return: logging prefix as a string
"""
# TODO(dtantsur): try to get MAC and BMC address for node_info as well
parts = []
data = data or {}
if node_info is not None:
parts.append(str(node_info.uuid))
pxe_mac = get_pxe_mac(data)
if pxe_mac:
parts.append('MAC %s' % pxe_mac)
if CONF.processing.log_bmc_address:
bmc_address = get_ipmi_address_from_data(data) if data else None
if bmc_address:
parts.append('BMC %s' % bmc_address)
if parts:
return _('[node: %s]') % ' '.join(parts)
else:
return _('[unidentified node]')
class ProcessingLoggerAdapter(log.KeywordArgumentAdapter):
def process(self, msg, kwargs):
if 'data' not in kwargs and 'node_info' not in kwargs:
return super(ProcessingLoggerAdapter, self).process(msg, kwargs)
data = kwargs.get('data', {})
node_info = kwargs.get('node_info')
prefix = processing_logger_prefix(data, node_info)
msg, kwargs = super(ProcessingLoggerAdapter, self).process(msg, kwargs)
return ('%s %s' % (prefix, msg)), kwargs
def getProcessingLogger(name):
# We can't use getLogger from oslo_log, as it's an adapter itself
logger = pylog.getLogger(name)
return ProcessingLoggerAdapter(logger, {})
LOG = getProcessingLogger(__name__)
class Error(Exception):
"""Inspector exception."""
def __init__(self, msg, code=400, log_level='error', **kwargs):
super(Error, self).__init__(msg)
getattr(LOG, log_level)(msg, **kwargs)
self.http_code = code
class NotFoundInCacheError(Error):
"""Exception when node was not found in cache during processing."""
def __init__(self, msg, code=404):
super(NotFoundInCacheError, self).__init__(msg, code,
log_level='info')
def executor():
"""Return the current futures executor."""
global _EXECUTOR
if _EXECUTOR is None:
_EXECUTOR = futurist.GreenThreadPoolExecutor(
max_workers=CONF.max_concurrency)
return _EXECUTOR
def add_auth_middleware(app):
"""Add authentication middleware to Flask application.
:param app: application.
"""
auth_conf = dict(CONF.keystone_authtoken)
# These items should only be used for accessing Ironic API.
# For keystonemiddleware's authentication,
# keystone_authtoken's items will be used and
# these items will be unsupported.
# [ironic]/os_password
# [ironic]/os_username
# [ironic]/os_auth_url
# [ironic]/os_tenant_name
auth_conf.update({'admin_password':
CONF.ironic.os_password or
CONF.keystone_authtoken.admin_password,
'admin_user':
CONF.ironic.os_username or
CONF.keystone_authtoken.admin_user,
'auth_uri':
CONF.ironic.os_auth_url or
CONF.keystone_authtoken.auth_uri,
'admin_tenant_name':
CONF.ironic.os_tenant_name or
CONF.keystone_authtoken.admin_tenant_name,
'identity_uri':
CONF.ironic.identity_uri or
CONF.keystone_authtoken.identity_uri})
auth_conf['delay_auth_decision'] = True
app.wsgi_app = auth_token.AuthProtocol(app.wsgi_app, auth_conf)
def add_cors_middleware(app):
"""Create a CORS wrapper
Attach ironic-inspector-specific defaults that must be included
in all CORS responses.
:param app: application
"""
app.wsgi_app = cors_middleware.CORS(app.wsgi_app, CONF)
def check_auth(request):
"""Check authentication on request.
:param request: Flask request
:raises: utils.Error if access is denied
"""
if get_auth_strategy() == 'noauth':
return
if request.headers.get('X-Identity-Status').lower() == 'invalid':
raise Error(_('Authentication required'), code=401)
roles = (request.headers.get('X-Roles') or '').split(',')
if 'admin' not in roles:
LOG.error(_LE('Role "admin" not in user role list %s'), roles)
raise Error(_('Access denied'), code=403)
def is_valid_mac(address):
"""Return whether given value is a valid MAC."""
m = "[0-9a-f]{2}(:[0-9a-f]{2}){5}$"
return (isinstance(address, six.string_types)
and re.match(m, address.lower()))
def get_auth_strategy():
if CONF.authenticate is not None:
return 'keystone' if CONF.authenticate else 'noauth'
return CONF.auth_strategy
def get_valid_macs(data):
"""Get a list of valid MAC's from the introspection data."""
return [m['mac']
for m in data.get('all_interfaces', {}).values()
if m.get('mac')]
_INVENTORY_MANDATORY_KEYS = ('disks', 'memory', 'cpu', 'interfaces')
def get_inventory(data, node_info=None):
"""Get and validate the hardware inventory from introspection data."""
inventory = data.get('inventory')
# TODO(dtantsur): validate inventory using JSON schema
if not inventory:
raise Error(_('Hardware inventory is empty or missing'),
data=data, node_info=node_info)
for key in _INVENTORY_MANDATORY_KEYS:
if not inventory.get(key):
raise Error(_('Invalid hardware inventory: %s key is missing '
'or empty') % key, data=data, node_info=node_info)
return inventory
def iso_timestamp(timestamp=None, tz=pytz.timezone('utc')):
"""Return an ISO8601-formatted timestamp (tz: UTC) or None.
:param timestamp: such as time.time() or None
:param tz: timezone
:returns: an ISO8601-formatted timestamp, or None
"""
if timestamp is None:
return None
date = datetime.datetime.fromtimestamp(timestamp, tz=tz)
return date.isoformat()