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

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16 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 eventlet # noqa
eventlet.monkey_patch()
import functools
import os
import re
import ssl
import sys
import flask
from futurist import periodics
from oslo_config import cfg
from oslo_log import log
from oslo_utils import uuidutils
import werkzeug
from ironic_inspector import api_tools
from ironic_inspector import db
from ironic_inspector.common.i18n import _, _LC, _LE, _LI, _LW
from ironic_inspector.common import ironic as ir_utils
from ironic_inspector.common import swift
from ironic_inspector import conf # noqa
from ironic_inspector import firewall
from ironic_inspector import introspect
from ironic_inspector import node_cache
from ironic_inspector.plugins import base as plugins_base
from ironic_inspector import process
from ironic_inspector import rules
from ironic_inspector import utils
CONF = cfg.CONF
app = flask.Flask(__name__)
LOG = utils.getProcessingLogger(__name__)
MINIMUM_API_VERSION = (1, 0)
# TODO(dtantsur): set to the current version as soon we move setting IPMI
# credentials support completely.
DEFAULT_API_VERSION = (1, 8)
CURRENT_API_VERSION = (1, 10)
_LOGGING_EXCLUDED_KEYS = ('logs',)
def _get_version():
ver = flask.request.headers.get(conf.VERSION_HEADER,
_DEFAULT_API_VERSION)
try:
requested = tuple(int(x) for x in ver.split('.'))
except (ValueError, TypeError):
return error_response(_('Malformed API version: expected string '
'in form of X.Y'), code=400)
return requested
def _format_version(ver):
return '%d.%d' % ver
_DEFAULT_API_VERSION = _format_version(DEFAULT_API_VERSION)
def error_response(exc, code=500):
res = flask.jsonify(error={'message': str(exc)})
res.status_code = code
LOG.debug('Returning error to client: %s', exc)
return res
def convert_exceptions(func):
@functools.wraps(func)
def wrapper(*args, **kwargs):
try:
return func(*args, **kwargs)
except utils.Error as exc:
return error_response(exc, exc.http_code)
except werkzeug.exceptions.HTTPException as exc:
return error_response(exc, exc.code or 400)
except Exception as exc:
LOG.exception(_LE('Internal server error'))
msg = _('Internal server error')
if CONF.debug:
msg += ' (%s): %s' % (exc.__class__.__name__, exc)
return error_response(msg)
return wrapper
@app.before_request
def check_api_version():
requested = _get_version()
if requested < MINIMUM_API_VERSION or requested > CURRENT_API_VERSION:
return error_response(_('Unsupported API version %(requested)s, '
'supported range is %(min)s to %(max)s') %
{'requested': _format_version(requested),
'min': _format_version(MINIMUM_API_VERSION),
'max': _format_version(CURRENT_API_VERSION)},
code=406)
@app.after_request
def add_version_headers(res):
res.headers[conf.MIN_VERSION_HEADER] = '%s.%s' % MINIMUM_API_VERSION
res.headers[conf.MAX_VERSION_HEADER] = '%s.%s' % CURRENT_API_VERSION
return res
def create_link_object(urls):
links = []
for url in urls:
links.append({"rel": "self",
"href": os.path.join(flask.request.url_root, url)})
return links
def generate_resource_data(resources):
data = []
for resource in resources:
item = {}
item['name'] = str(resource).split('/')[-1]
item['links'] = create_link_object([str(resource)[1:]])
data.append(item)
return data
def generate_introspection_status(node):
"""Return a dict representing current node status.
:param node: a NodeInfo instance
:return: dictionary
"""
started_at = node.started_at.isoformat()
finished_at = node.finished_at.isoformat() if node.finished_at else None
status = {}
status['uuid'] = node.uuid
status['finished'] = bool(node.finished_at)
status['state'] = node.state
status['started_at'] = started_at
status['finished_at'] = finished_at
status['error'] = node.error
status['links'] = create_link_object(
["v%s/introspection/%s" % (CURRENT_API_VERSION[0], node.uuid)])
return status
@app.route('/', methods=['GET'])
@convert_exceptions
def api_root():
versions = [
{
"status": "CURRENT",
"id": '%s.%s' % CURRENT_API_VERSION,
},
]
for version in versions:
version['links'] = create_link_object(
["v%s" % version['id'].split('.')[0]])
return flask.jsonify(versions=versions)
@app.route('/<version>', methods=['GET'])
@convert_exceptions
def version_root(version):
pat = re.compile("^\/%s\/[^\/]*?$" % version)
resources = []
for url in app.url_map.iter_rules():
if pat.match(str(url)):
resources.append(url)
if not resources:
raise utils.Error(_('Version not found.'), code=404)
return flask.jsonify(resources=generate_resource_data(resources))
@app.route('/v1/continue', methods=['POST'])
@convert_exceptions
def api_continue():
data = flask.request.get_json(force=True)
if not isinstance(data, dict):
raise utils.Error(_('Invalid data: expected a JSON object, got %s') %
data.__class__.__name__)
logged_data = {k: (v if k not in _LOGGING_EXCLUDED_KEYS else '<hidden>')
for k, v in data.items()}
LOG.debug("Received data from the ramdisk: %s", logged_data,
data=data)
return flask.jsonify(process.process(data))
# TODO(sambetts) Add API discovery for this endpoint
@app.route('/v1/introspection/<node_id>', methods=['GET', 'POST'])
@convert_exceptions
def api_introspection(node_id):
utils.check_auth(flask.request)
if flask.request.method == 'POST':
new_ipmi_password = flask.request.args.get('new_ipmi_password',
type=str,
default=None)
if new_ipmi_password:
new_ipmi_username = flask.request.args.get('new_ipmi_username',
type=str,
default=None)
new_ipmi_credentials = (new_ipmi_username, new_ipmi_password)
else:
new_ipmi_credentials = None
if new_ipmi_credentials and _get_version() >= (1, 9):
return _('Setting IPMI credentials is deprecated and not allowed '
'starting with API version 1.9'), 400
introspect.introspect(node_id,
new_ipmi_credentials=new_ipmi_credentials,
token=flask.request.headers.get('X-Auth-Token'))
return '', 202
else:
node_info = node_cache.get_node(node_id)
return flask.json.jsonify(generate_introspection_status(node_info))
@app.route('/v1/introspection', methods=['GET'])
@convert_exceptions
def api_introspection_statuses():
utils.check_auth(flask.request)
nodes = node_cache.get_node_list(
marker=api_tools.marker_field(),
limit=api_tools.limit_field(default=CONF.api_max_limit)
)
data = {
'introspection': [generate_introspection_status(node)
for node in nodes]
}
return flask.json.jsonify(data)
@app.route('/v1/introspection/<node_id>/abort', methods=['POST'])
@convert_exceptions
def api_introspection_abort(node_id):
utils.check_auth(flask.request)
introspect.abort(node_id, token=flask.request.headers.get('X-Auth-Token'))
return '', 202
@app.route('/v1/introspection/<node_id>/data', methods=['GET'])
@convert_exceptions
def api_introspection_data(node_id):
utils.check_auth(flask.request)
if CONF.processing.store_data == 'swift':
if not uuidutils.is_uuid_like(node_id):
node = ir_utils.get_node(node_id, fields=['uuid'])
node_id = node.uuid
res = swift.get_introspection_data(node_id)
return res, 200, {'Content-Type': 'application/json'}
else:
return error_response(_('Inspector is not configured to store data. '
'Set the [processing] store_data '
'configuration option to change this.'),
code=404)
@app.route('/v1/introspection/<node_id>/data/unprocessed', methods=['POST'])
@convert_exceptions
def api_introspection_reapply(node_id):
utils.check_auth(flask.request)
if flask.request.content_length:
return error_response(_('User data processing is not '
'supported yet'), code=400)
if CONF.processing.store_data == 'swift':
process.reapply(node_id)
return '', 202
else:
return error_response(_('Inspector is not configured to store'
' data. Set the [processing] '
'store_data configuration option to '
'change this.'), code=400)
def rule_repr(rule, short):
result = rule.as_dict(short=short)
result['links'] = [{
'href': flask.url_for('api_rule', uuid=result['uuid']),
'rel': 'self'
}]
return result
@app.route('/v1/rules', methods=['GET', 'POST', 'DELETE'])
@convert_exceptions
def api_rules():
utils.check_auth(flask.request)
if flask.request.method == 'GET':
res = [rule_repr(rule, short=True) for rule in rules.get_all()]
return flask.jsonify(rules=res)
elif flask.request.method == 'DELETE':
rules.delete_all()
return '', 204
else:
body = flask.request.get_json(force=True)
if body.get('uuid') and not uuidutils.is_uuid_like(body['uuid']):
raise utils.Error(_('Invalid UUID value'), code=400)
rule = rules.create(conditions_json=body.get('conditions', []),
actions_json=body.get('actions', []),
uuid=body.get('uuid'),
description=body.get('description'))
response_code = (200 if _get_version() < (1, 6) else 201)
return flask.make_response(
flask.jsonify(rule_repr(rule, short=False)), response_code)
@app.route('/v1/rules/<uuid>', methods=['GET', 'DELETE'])
@convert_exceptions
def api_rule(uuid):
utils.check_auth(flask.request)
if flask.request.method == 'GET':
rule = rules.get(uuid)
return flask.jsonify(rule_repr(rule, short=False))
else:
rules.delete(uuid)
return '', 204
@app.errorhandler(404)
def handle_404(error):
return error_response(error, code=404)
def periodic_update(): # pragma: no cover
try:
firewall.update_filters()
except Exception:
LOG.exception(_LE('Periodic update of firewall rules failed'))
def periodic_clean_up(): # pragma: no cover
try:
if node_cache.clean_up():
firewall.update_filters()
sync_with_ironic()
except Exception:
LOG.exception(_LE('Periodic clean up of node cache failed'))
def sync_with_ironic():
ironic = ir_utils.get_client()
# TODO(yuikotakada): pagination
ironic_nodes = ironic.node.list(limit=0)
ironic_node_uuids = {node.uuid for node in ironic_nodes}
node_cache.delete_nodes_not_in_list(ironic_node_uuids)
def create_ssl_context():
if not CONF.use_ssl:
return
MIN_VERSION = (2, 7, 9)
if sys.version_info < MIN_VERSION:
LOG.warning(_LW('Unable to use SSL in this version of Python: '
'%(current)s, please ensure your version of Python is '
'greater than %(min)s to enable this feature.'),
{'current': '.'.join(map(str, sys.version_info[:3])),
'min': '.'.join(map(str, MIN_VERSION))})
return
context = ssl.create_default_context(purpose=ssl.Purpose.CLIENT_AUTH)
if CONF.ssl_cert_path and CONF.ssl_key_path:
try:
context.load_cert_chain(CONF.ssl_cert_path, CONF.ssl_key_path)
except IOError as exc:
LOG.warning(_LW('Failed to load certificate or key from defined '
'locations: %(cert)s and %(key)s, will continue '
'to run with the default settings: %(exc)s'),
{'cert': CONF.ssl_cert_path, 'key': CONF.ssl_key_path,
'exc': exc})
except ssl.SSLError as exc:
LOG.warning(_LW('There was a problem with the loaded certificate '
'and key, will continue to run with the default '
'settings: %s'), exc)
return context
class Service(object):
_periodics_worker = None
def setup_logging(self, args):
log.register_options(CONF)
CONF(args, project='ironic-inspector')
log.set_defaults(default_log_levels=[
'sqlalchemy=WARNING',
'iso8601=WARNING',
'requests=WARNING',
'urllib3.connectionpool=WARNING',
'keystonemiddleware=WARNING',
'swiftclient=WARNING',
'keystoneauth=WARNING',
'ironicclient=WARNING'
])
log.setup(CONF, 'ironic_inspector')
LOG.debug("Configuration:")
CONF.log_opt_values(LOG, log.DEBUG)
def init(self):
if CONF.auth_strategy != 'noauth':
utils.add_auth_middleware(app)
else:
LOG.warning(_LW('Starting unauthenticated, please check'
' configuration'))
if CONF.processing.store_data == 'none':
LOG.warning(_LW('Introspection data will not be stored. Change '
'"[processing] store_data" option if this is not '
'the desired behavior'))
elif CONF.processing.store_data == 'swift':
LOG.info(_LI('Introspection data will be stored in Swift in the '
'container %s'), CONF.swift.container)
utils.add_cors_middleware(app)
db.init()
try:
hooks = [ext.name for ext in
plugins_base.processing_hooks_manager()]
except KeyError as exc:
# callback function raises MissingHookError derived from KeyError
# on missing hook
LOG.critical(_LC('Hook(s) %s failed to load or was not found'),
str(exc))
sys.exit(1)
LOG.info(_LI('Enabled processing hooks: %s'), hooks)
if CONF.firewall.manage_firewall:
firewall.init()
periodic_update_ = periodics.periodic(
spacing=CONF.firewall.firewall_update_period,
enabled=CONF.firewall.manage_firewall
)(periodic_update)
periodic_clean_up_ = periodics.periodic(
spacing=CONF.clean_up_period
)(periodic_clean_up)
self._periodics_worker = periodics.PeriodicWorker(
callables=[(periodic_update_, None, None),
(periodic_clean_up_, None, None)],
executor_factory=periodics.ExistingExecutor(utils.executor()))
utils.executor().submit(self._periodics_worker.start)
def shutdown(self):
LOG.debug('Shutting down')
firewall.clean_up()
if self._periodics_worker is not None:
self._periodics_worker.stop()
self._periodics_worker.wait()
self._periodics_worker = None
if utils.executor().alive:
utils.executor().shutdown(wait=True)
LOG.info(_LI('Shut down successfully'))
def run(self, args, application):
self.setup_logging(args)
app_kwargs = {'host': CONF.listen_address,
'port': CONF.listen_port}
context = create_ssl_context()
if context:
app_kwargs['ssl_context'] = context
self.init()
try:
application.run(**app_kwargs)
finally:
self.shutdown()
def main(args=sys.argv[1:]): # pragma: no cover
service = Service()
service.run(args, app)