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# Copyright 2013 Red Hat Inc.
# All Rights Reserved.
#
# 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.
#
# iBoot Power Driver
from oslo.utils import importutils
from nova import exception
from nova.i18n import _
from nova.openstack.common import log as logging
from nova.virt.baremetal import baremetal_states
from nova.virt.baremetal import base
iboot = importutils.try_import('iboot')
LOG = logging.getLogger(__name__)
class IBootManager(base.PowerManager):
"""iBoot Power Driver for Baremetal Nova Compute
This PowerManager class provides a mechanism for controlling power state
via an iBoot capable device (tested with an iBoot G2).
Requires installation of python-iboot:
https://github.com/darkip/python-iboot
"""
def __init__(self, **kwargs):
node = kwargs.pop('node', {})
addr_relay = str(node['pm_address']).split(',')
if len(addr_relay) > 1:
try:
self.relay_id = int(addr_relay[1])
except ValueError:
msg = _("iboot PDU relay ID must be an integer.")
raise exception.InvalidParameterValue(msg)
else:
self.relay_id = 1
addr_port = addr_relay[0].split(':')
self.address = addr_port[0]
if len(addr_port) > 1:
try:
self.port = int(addr_port[1])
except ValueError:
msg = _("iboot PDU port must be an integer.")
raise exception.InvalidParameterValue(msg)
else:
self.port = 9100
self.user = str(node['pm_user'])
self.password = str(node['pm_password'])
instance = kwargs.pop('instance', {})
self.node_name = instance.get('hostname', "")
self.state = None
self.conn = None
def _create_connection(self):
if not self.conn:
self.conn = iboot.iBootInterface(self.address, self.user,
self.password, port=self.port,
num_relays=self.relay_id)
return self.conn
def _switch(self, relay_id, enabled):
return self.conn.switch(relay_id, enabled)
def _get_relay(self, relay_id):
return self.conn.get_relays()[relay_id - 1]
def activate_node(self):
LOG.info(_("activate_node name %s"), self.node_name)
self._create_connection()
self._switch(self.relay_id, True)
if self.is_power_on():
self.state = baremetal_states.ACTIVE
else:
self.state = baremetal_states.ERROR
return self.state
def reboot_node(self):
LOG.info(_("reboot_node: %s"), self.node_name)
self._create_connection()
self._switch(self.relay_id, False)
self._switch(self.relay_id, True)
if self.is_power_on():
self.state = baremetal_states.ACTIVE
else:
self.state = baremetal_states.ERROR
return self.state
def deactivate_node(self):
LOG.info(_("deactivate_node name %s"), self.node_name)
self._create_connection()
if self.is_power_on():
self._switch(self.relay_id, False)
if self.is_power_on():
self.state = baremetal_states.ERROR
else:
self.state = baremetal_states.DELETED
return self.state
def is_power_on(self):
LOG.debug("Checking if %s is running", self.node_name)
self._create_connection()
return self._get_relay(self.relay_id)
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