# Copyright 2013 Hewlett-Packard Development Company, L.P.
#
# 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 logging
import os
import time
from oslo_utils import strutils
from ironicclient.common import base
from ironicclient.common.i18n import _
from ironicclient.common import utils
from ironicclient import exc
_power_states = {
'on': 'power on',
'off': 'power off',
'reboot': 'rebooting',
}
LOG = logging.getLogger(__name__)
_DEFAULT_POLL_INTERVAL = 2
class Node(base.Resource):
def __repr__(self):
return "<Node %s>" % self._info
class NodeManager(base.CreateManager):
resource_class = Node
_creation_attributes = ['chassis_uuid', 'driver', 'driver_info',
'extra', 'uuid', 'properties', 'name',
'network_interface', 'resource_class']
_resource_name = 'nodes'
def list(self, associated=None, maintenance=None, marker=None, limit=None,
detail=False, sort_key=None, sort_dir=None, fields=None,
provision_state=None, driver=None, resource_class=None,
chassis=None):
"""Retrieve a list of nodes.
:param associated: Optional. Either a Boolean or a string
representation of a Boolean that indicates whether
to return a list of associated (True or "True") or
unassociated (False or "False") nodes.
:param maintenance: Optional. Either a Boolean or a string
representation of a Boolean that indicates whether
to return nodes in maintenance mode (True or
"True"), or not in maintenance mode (False or
"False").
:param provision_state: Optional. String value to get only nodes in
that provision state.
:param marker: Optional, the UUID of a node, eg the last
node from a previous result set. Return
the next result set.
:param limit: The maximum number of results to return per
request, if:
1) limit > 0, the maximum number of nodes to return.
2) limit == 0, return the entire list of nodes.
3) limit param is NOT specified (None), the number of items
returned respect the maximum imposed by the Ironic API
(see Ironic's api.max_limit option).
:param detail: Optional, boolean whether to return detailed information
about nodes.
:param sort_key: Optional, field used for sorting.
:param sort_dir: Optional, direction of sorting, either 'asc' (the
default) or 'desc'.
:param fields: Optional, a list with a specified set of fields
of the resource to be returned. Can not be used
when 'detail' is set.
:param driver: Optional. String value to get only nodes using that
driver.
:param resource_class: Optional. String value to get only nodes
with the given resource class set.
:param chassis: Optional, the UUID of a chassis. Used to get only
nodes of this chassis.
:returns: A list of nodes.
"""
if limit is not None:
limit = int(limit)
if detail and fields:
raise exc.InvalidAttribute(_("Can't fetch a subset of fields "
"with 'detail' set"))
filters = utils.common_filters(marker, limit, sort_key, sort_dir,
fields)
if associated is not None:
filters.append('associated=%s' % associated)
if maintenance is not None:
filters.append('maintenance=%s' % maintenance)
if provision_state is not None:
filters.append('provision_state=%s' % provision_state)
if driver is not None:
filters.append('driver=%s' % driver)
if resource_class is not None:
filters.append('resource_class=%s' % resource_class)
if chassis is not None:
filters.append('chassis_uuid=%s' % chassis)
path = ''
if detail:
path += 'detail'
if filters:
path += '?' + '&'.join(filters)
if limit is None:
return self._list(self._path(path), "nodes")
else:
return self._list_pagination(self._path(path), "nodes",
limit=limit)
def list_ports(self, node_id, marker=None, limit=None, sort_key=None,
sort_dir=None, detail=False, fields=None):
"""List all the ports for a given node.
:param node_id: Name or UUID of the node.
:param marker: Optional, the UUID of a port, eg the last
port from a previous result set. Return
the next result set.
:param limit: The maximum number of results to return per
request, if:
1) limit > 0, the maximum number of ports to return.
2) limit == 0, return the entire list of ports.
3) limit param is NOT specified (None), the number of items
returned respect the maximum imposed by the Ironic API
(see Ironic's api.max_limit option).
:param sort_key: Optional, field used for sorting.
:param sort_dir: Optional, direction of sorting, either 'asc' (the
default) or 'desc'.
:param detail: Optional, boolean whether to return detailed information
about ports.
:param fields: Optional, a list with a specified set of fields
of the resource to be returned. Can not be used
when 'detail' is set.
:returns: A list of ports.
"""
if limit is not None:
limit = int(limit)
if detail and fields:
raise exc.InvalidAttribute(_("Can't fetch a subset of fields "
"with 'detail' set"))
filters = utils.common_filters(marker, limit, sort_key, sort_dir,
fields)
path = "%s/ports" % node_id
if detail:
path += '/detail'
if filters:
path += '?' + '&'.join(filters)
if limit is None:
return self._list(self._path(path), "ports")
else:
return self._list_pagination(self._path(path), "ports",
limit=limit)
def get(self, node_id, fields=None):
return self._get(resource_id=node_id, fields=fields)
def get_by_instance_uuid(self, instance_uuid, fields=None):
path = '?instance_uuid=%s' % instance_uuid
if fields is not None:
path += '&fields=' + ','.join(fields)
else:
path = 'detail' + path
nodes = self._list(self._path(path), 'nodes')
# get all the details of the node assuming that
# filtering by instance_uuid returns a collection
# of one node if successful.
if len(nodes) == 1:
return nodes[0]
else:
raise exc.NotFound()
def delete(self, node_id):
return self._delete(resource_id=node_id)
def update(self, node_id, patch, http_method='PATCH'):
return self._update(resource_id=node_id, patch=patch,
method=http_method)
def vendor_passthru(self, node_id, method, args=None,
http_method=None):
"""Issue requests for vendor-specific actions on a given node.
:param node_id: The UUID of the node.
:param method: Name of the vendor method.
:param args: Optional. The arguments to be passed to the method.
:param http_method: The HTTP method to use on the request.
Defaults to POST.
"""
if args is None:
args = {}
if http_method is None:
http_method = 'POST'
http_method = http_method.upper()
path = "%s/vendor_passthru/%s" % (node_id, method)
if http_method in ('POST', 'PUT', 'PATCH'):
return self.update(path, args, http_method=http_method)
elif http_method == 'DELETE':
return self.delete(path)
elif http_method == 'GET':
return self.get(path)
else:
raise exc.InvalidAttribute(
_('Unknown HTTP method: %s') % http_method)
def set_maintenance(self, node_id, state, maint_reason=None):
"""Set the maintenance mode for the node.
:param node_id: The UUID of the node.
:param state: the maintenance mode; either a Boolean or a string
representation of a Boolean (eg, 'true', 'on', 'false',
'off'). True to put the node in maintenance mode; False
to take the node out of maintenance mode.
:param maint_reason: Optional string. Reason for putting node
into maintenance mode.
:raises: InvalidAttribute if state is an invalid string (that doesn't
represent a Boolean).
"""
if isinstance(state, bool):
maintenance_mode = state
else:
try:
maintenance_mode = strutils.bool_from_string(state, True)
except ValueError as e:
raise exc.InvalidAttribute(_("Argument 'state': %(err)s") %
{'err': e})
path = "%s/maintenance" % node_id
if maintenance_mode:
reason = {'reason': maint_reason}
return self.update(path, reason, http_method='PUT')
else:
return self.delete(path)
def set_power_state(self, node_id, state):
path = "%s/states/power" % node_id
target = {'target': _power_states.get(state, state)}
return self.update(path, target, http_method='PUT')
def set_target_raid_config(self, node_ident, target_raid_config):
"""Sets target_raid_config for a node.
:param node_ident: Node identifier
:param target_raid_config: A dictionary with the target RAID
configuration; may be empty.
:returns: status of the request
"""
path = "%s/states/raid" % node_ident
return self.update(path, target_raid_config, http_method='PUT')
def validate(self, node_uuid):
path = "%s/validate" % node_uuid
return self.get(path)
def set_provision_state(self, node_uuid, state, configdrive=None,
cleansteps=None):
"""Set the provision state for the node.
:param node_uuid: The UUID or name of the node.
:param state: The desired provision state. One of 'active', 'deleted',
'rebuild', 'inspect', 'provide', 'manage', 'clean', 'abort'.
:param configdrive: A gzipped, base64-encoded configuration drive
string OR the path to the configuration drive file OR the path to
a directory containing the config drive files. In case it's a
directory, a config drive will be generated from it. This is only
valid when setting state to 'active'.
:param cleansteps: The clean steps as a list of clean-step
dictionaries; each dictionary should have keys 'interface' and
'step', and optional key 'args'. This must be specified (and is
only valid) when setting provision-state to 'clean'.
:raises: InvalidAttribute if there was an error with the clean steps
:returns: The status of the request
"""
path = "%s/states/provision" % node_uuid
body = {'target': state}
if configdrive:
if os.path.isfile(configdrive):
with open(configdrive, 'rb') as f:
configdrive = f.read()
if os.path.isdir(configdrive):
configdrive = utils.make_configdrive(configdrive)
body['configdrive'] = configdrive
elif cleansteps:
body['clean_steps'] = cleansteps
return self.update(path, body, http_method='PUT')
def states(self, node_uuid):
path = "%s/states" % node_uuid
return self.get(path)
def get_console(self, node_uuid):
path = "%s/states/console" % node_uuid
info = self.get(path)
if not info:
return {}
return info.to_dict()
def set_console_mode(self, node_uuid, enabled):
"""Set the console mode for the node.
:param node_uuid: The UUID of the node.
:param enabled: Either a Boolean or a string representation of a
Boolean. True to enable the console; False to disable.
"""
path = "%s/states/console" % node_uuid
target = {'enabled': enabled}
return self.update(path, target, http_method='PUT')
def set_boot_device(self, node_uuid, boot_device, persistent=False):
path = "%s/management/boot_device" % node_uuid
target = {'boot_device': boot_device, 'persistent': persistent}
return self.update(path, target, http_method='PUT')
def get_boot_device(self, node_uuid):
path = "%s/management/boot_device" % node_uuid
return self.get(path).to_dict()
def get_supported_boot_devices(self, node_uuid):
path = "%s/management/boot_device/supported" % node_uuid
return self.get(path).to_dict()
def get_vendor_passthru_methods(self, node_ident):
path = "%s/vendor_passthru/methods" % node_ident
return self.get(path).to_dict()
def wait_for_provision_state(self, node_ident, expected_state,
timeout=0,
poll_interval=_DEFAULT_POLL_INTERVAL,
poll_delay_function=None,
fail_on_unexpected_state=True):
"""Helper function to wait for a node to reach a given state.
Polls Ironic API in a loop until node gets to a requested state.
Fails in the following cases:
* Timeout (if provided) is reached
* Node's last_error gets set to a non-empty value
* Unexpected stable state is reached and fail_on_unexpected_state is on
* Error state is reached (if it's not equal to expected_state)
:param node_ident: node UUID or name
:param expected_state: expected final provision state
:param timeout: timeout in seconds, no timeout if 0
:param poll_interval: interval in seconds between 2 poll
:param poll_delay_function: function to use to wait between polls
(defaults to time.sleep). Should take one argument - delay time
in seconds. Any exceptions raised inside it will abort the wait.
:param fail_on_unexpected_state: whether to fail if the nodes
reaches a different stable state.
:raises: StateTransitionFailed if node reached an error state
:raises: StateTransitionTimeout on timeout
"""
if not isinstance(timeout, (int, float)) or timeout < 0:
raise ValueError(_('Timeout must be a non-negative number'))
threshold = time.time() + timeout
expected_state = expected_state.lower()
poll_delay_function = (time.sleep if poll_delay_function is None
else poll_delay_function)
if not callable(poll_delay_function):
raise TypeError(_('poll_delay_function must be callable'))
# TODO(dtantsur): use version negotiation to request API 1.8 and use
# the "fields" argument to reduce amount of data sent.
while not timeout or time.time() < threshold:
node = self.get(node_ident)
if node.provision_state == expected_state:
LOG.debug('Node %(node)s reached provision state %(state)s',
{'node': node_ident, 'state': expected_state})
return
# Note that if expected_state == 'error' we still succeed
if (node.last_error or node.provision_state == 'error' or
node.provision_state.endswith(' failed')):
raise exc.StateTransitionFailed(
_('Node %(node)s failed to reach state %(state)s. '
'It\'s in state %(actual)s, and has error: %(error)s') %
{'node': node_ident, 'state': expected_state,
'actual': node.provision_state, 'error': node.last_error})
if fail_on_unexpected_state and not node.target_provision_state:
raise exc.StateTransitionFailed(
_('Node %(node)s failed to reach state %(state)s. '
'It\'s in unexpected stable state %(actual)s') %
{'node': node_ident, 'state': expected_state,
'actual': node.provision_state})
LOG.debug('Still waiting for node %(node)s to reach state '
'%(state)s, the current state is %(actual)s',
{'node': node_ident, 'state': expected_state,
'actual': node.provision_state})
poll_delay_function(poll_interval)
raise exc.StateTransitionTimeout(
_('Node %(node)s failed to reach state %(state)s in '
'%(timeout)s seconds') % {'node': node_ident,
'state': expected_state,
'timeout': timeout})