def process(node_info):
"""Process data from the discovery ramdisk.
This function heavily relies on the hooks to do the actual data processing.
"""
hooks = plugins_base.processing_hooks_manager()
for hook_ext in hooks:
hook_ext.obj.before_processing(node_info)
cached_node = node_cache.find_node(
bmc_address=node_info.get('ipmi_address'), mac=node_info.get('macs'))
ironic = utils.get_client()
try:
node = ironic.node.get(cached_node.uuid)
except exceptions.NotFound:
msg = ('Node UUID %s was found in cache, but is not found in Ironic' %
cached_node.uuid)
cached_node.finished(error=msg)
raise utils.Error(msg, code=404)
try:
return _process_node(ironic, node, node_info, cached_node)
except utils.Error as exc:
cached_node.finished(error=str(exc))
raise
except Exception as exc:
msg = 'Unexpected exception during processing'
LOG.exception(msg)
cached_node.finished(error=msg)
raise utils.Error(msg)
def check_auth():
"""Check whether request is properly authenticated."""
if not conf.getboolean('discoverd', 'authenticate'):
return
if not flask.request.headers.get('X-Auth-Token'):
LOG.error("No X-Auth-Token header, rejecting request")
raise utils.Error('Authentication required', code=401)
try:
utils.check_is_admin(token=flask.request.headers['X-Auth-Token'])
except exceptions.Unauthorized as exc:
LOG.error("Keystone denied access: %s, rejecting request", exc)
raise utils.Error('Access denied', code=403)
def find_node(**attributes):
"""Find node in cache.
:param attributes: attributes known about this node (like macs, BMC etc)
:returns: structure NodeInfo with attributes ``uuid`` and ``created_at``
:raises: Error if node is not found
"""
# NOTE(dtantsur): sorting is not required, but gives us predictability
found = set()
db = _db()
for (name, value) in sorted(attributes.items()):
if not value:
LOG.debug('Empty value for attribute %s', name)
continue
if not isinstance(value, list):
value = [value]
LOG.debug('Trying to use %s of value %s for node look up' %
(name, value))
rows = db.execute(
'select distinct uuid from attributes where ' +
' OR '.join('name=? AND value=?' for _ in value),
sum(([name, v] for v in value), [])).fetchall()
if rows:
found.update(item[0] for item in rows)
if not found:
raise utils.Error('Could not find a node for attributes %s' %
attributes,
code=404)
elif len(found) > 1:
raise utils.Error(
'Multiple matching nodes found for attributes %s: %s' %
(attributes, list(found)),
code=404)
uuid = found.pop()
row = db.execute('select started_at, finished_at from nodes where uuid=?',
(uuid, )).fetchone()
if not row:
raise utils.Error('Could not find node %s in introspection cache, '
'probably it\'s not on introspection now' % uuid,
code=404)
if row['finished_at']:
raise utils.Error('Introspection for node %s already finished on %s' %
(uuid, row['finished_at']))
return NodeInfo(uuid=uuid, started_at=row['started_at'])
def _prepare_for_pxe(ironic, cached_node, macs, setup_ipmi_credentials):
if macs:
LOG.info('Whitelisting MAC\'s %s for node %s on the firewall',
macs, cached_node.uuid)
firewall.update_filters(ironic)
if not setup_ipmi_credentials:
try:
utils.retry_on_conflict(ironic.node.set_boot_device,
cached_node.uuid, 'pxe', persistent=False)
except Exception as exc:
LOG.warning('Failed to set boot device to PXE for node %s: %s',
cached_node.uuid, exc)
try:
utils.retry_on_conflict(ironic.node.set_power_state,
cached_node.uuid, 'reboot')
except Exception as exc:
raise utils.Error('Failed to power on node %s, check it\'s power '
'management configuration:\n%s'
% (cached_node.uuid, exc))
else:
LOG.info('Introspection environment is ready for node %s, '
'manual power on is required within %d seconds',
cached_node.uuid, conf.getint('discoverd', 'timeout'))
def test_not_found_in_cache(self, cli, pop_mock, process_mock):
pop_mock.side_effect = utils.Error('not found')
self.assertRaisesRegexp(utils.Error, 'not found', process.process,
self.data)
self.assertFalse(cli.node.get.called)
self.assertFalse(process_mock.called)
def test_intospect_failed(self, introspect_mock):
introspect_mock.side_effect = utils.Error("boom")
res = self.app.post('/v1/introspection/uuid1')
self.assertEqual(400, res.status_code)
self.assertEqual(b"boom", res.data)
introspect_mock.assert_called_once_with("uuid1",
setup_ipmi_credentials=False)
def test_expected_exception(self, finished_mock, client_mock, pop_mock,
process_mock):
pop_mock.return_value = node_cache.NodeInfo(uuid=self.node.uuid,
started_at=self.started_at)
process_mock.side_effect = utils.Error('boom')
self.assertRaisesRegexp(utils.Error, 'boom', process.process,
self.data)
finished_mock.assert_called_once_with(mock.ANY, error='boom')
def get_node(uuid):
"""Get node from cache by it's UUID.
:param uuid: node UUID.
:returns: structure NodeInfo.
"""
row = _db().execute('select * from nodes where uuid=?',
(uuid, )).fetchone()
if row is None:
raise utils.Error('Could not find node %s in cache' % uuid, code=404)
return NodeInfo.from_row(row)
def before_processing(self, node_info):
"""Validate that required properties are provided by the ramdisk."""
missing = [key for key in self.KEYS if not node_info.get(key)]
if missing:
raise utils.Error(
'The following required parameters are missing: %s' % missing)
LOG.info(
'Discovered data: CPUs: %(cpus)s %(cpu_arch)s, '
'memory %(memory_mb)s MiB, disk %(local_gb)s GiB',
{key: node_info.get(key)
for key in self.KEYS})
def _force_power_off(ironic, cached_node):
LOG.debug('Forcing power off of node %s', cached_node.uuid)
try:
utils.retry_on_conflict(ironic.node.set_power_state, cached_node.uuid,
'off')
except Exception as exc:
msg = ('Failed to power off node %s, check it\'s power '
'management configuration: %s' % (cached_node.uuid, exc))
cached_node.finished(error=msg)
raise utils.Error(msg)
deadline = cached_node.started_at + conf.getint('discoverd', 'timeout')
while time.time() < deadline:
node = ironic.node.get(cached_node.uuid)
if (node.power_state or '').lower() == 'power off':
return
LOG.info('Waiting for node %s to power off, current state is %s',
cached_node.uuid, node.power_state)
eventlet.greenthread.sleep(_POWER_OFF_CHECK_PERIOD)
msg = ('Timeout waiting for node %s to power off after introspection' %
cached_node.uuid)
cached_node.finished(error=msg)
raise utils.Error(msg)
def add_node(uuid, **attributes):
"""Store information about a node under introspection.
All existing information about this node is dropped.
Empty values are skipped.
:param uuid: Ironic node UUID
:param attributes: attributes known about this node (like macs, BMC etc)
:returns: NodeInfo
"""
started_at = time.time()
with _db() as db:
db.execute("delete from nodes where uuid=?", (uuid, ))
db.execute("delete from attributes where uuid=?", (uuid, ))
db.execute("delete from options where uuid=?", (uuid, ))
db.execute("insert into nodes(uuid, started_at) "
"values(?, ?)", (uuid, started_at))
for (name, value) in attributes.items():
if not value:
continue
if not isinstance(value, list):
value = [value]
try:
db.executemany(
"insert into attributes(name, value, uuid) "
"values(?, ?, ?)", [(name, v, uuid) for v in value])
except sqlite3.IntegrityError as exc:
LOG.error(
'Database integrity error %s during '
'adding attributes', exc)
raise utils.Error(
'Some or all of %(name)s\'s %(value)s are already '
'on introspection' % {
'name': name,
'value': value
})
return NodeInfo(uuid=uuid, started_at=started_at)
def introspect(uuid, setup_ipmi_credentials=False):
"""Initiate hardware properties introspection for a given node.
:param uuid: node uuid
:raises: Error
"""
ironic = utils.get_client()
try:
node = ironic.node.get(uuid)
except exceptions.NotFound:
raise utils.Error("Cannot find node %s" % uuid, code=404)
except exceptions.HttpError as exc:
raise utils.Error("Cannot get node %s: %s" % (uuid, exc))
if (setup_ipmi_credentials and not
conf.getboolean('discoverd', 'enable_setting_ipmi_credentials')):
raise utils.Error(
'IPMI credentials setup is disabled in configuration')
if not node.maintenance:
provision_state = node.provision_state
if provision_state and provision_state.lower() not in VALID_STATES:
msg = ('Refusing to introspect node %s with provision state "%s" '
'and maintenance mode off')
raise utils.Error(msg % (node.uuid, provision_state))
power_state = node.power_state
if power_state and power_state.lower() not in VALID_POWER_STATES:
msg = ('Refusing to introspect node %s with power state "%s" '
'and maintenance mode off')
raise utils.Error(msg % (node.uuid, power_state))
else:
LOG.info('Node %s is in maintenance mode, skipping power and provision'
' states check')
if not setup_ipmi_credentials:
validation = utils.retry_on_conflict(ironic.node.validate, node.uuid)
if not validation.power['result']:
msg = ('Failed validation of power interface for node %s, '
'reason: %s')
raise utils.Error(msg % (node.uuid, validation.power['reason']))
eventlet.greenthread.spawn_n(_background_start_discover, ironic, node,
setup_ipmi_credentials=setup_ipmi_credentials)
def test_continue_failed(self, process_mock):
process_mock.side_effect = utils.Error("boom")
res = self.app.post('/v1/continue', data='"JSON"')
self.assertEqual(400, res.status_code)
process_mock.assert_called_once_with("JSON")
self.assertEqual(b'boom', res.data)
def before_processing(self, node_info):
if not node_info.get('error'):
return
raise utils.Error('Ramdisk reported error: %s' % node_info['error'])
