96 lines
4.0 KiB
Python
96 lines
4.0 KiB
Python
# Copyright 2015 Cloudbase Solutions Srl
|
|
# 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.
|
|
|
|
from nova import utils
|
|
from nova.virt import event as virtevent
|
|
from os_win import constants
|
|
from os_win import utilsfactory
|
|
from oslo_log import log as logging
|
|
|
|
import compute_hyperv.nova.conf
|
|
from compute_hyperv.nova import serialconsoleops
|
|
from compute_hyperv.nova import vmops
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
CONF = compute_hyperv.nova.conf.CONF
|
|
|
|
|
|
class InstanceEventHandler(object):
|
|
_TRANSITION_MAP = {
|
|
constants.HYPERV_VM_STATE_ENABLED: virtevent.EVENT_LIFECYCLE_STARTED,
|
|
constants.HYPERV_VM_STATE_DISABLED: virtevent.EVENT_LIFECYCLE_STOPPED,
|
|
constants.HYPERV_VM_STATE_PAUSED: virtevent.EVENT_LIFECYCLE_PAUSED,
|
|
constants.HYPERV_VM_STATE_SUSPENDED:
|
|
virtevent.EVENT_LIFECYCLE_SUSPENDED
|
|
}
|
|
|
|
def __init__(self, state_change_callback=None):
|
|
self._vmutils = utilsfactory.get_vmutils()
|
|
self._listener = self._vmutils.get_vm_power_state_change_listener(
|
|
timeframe=CONF.hyperv.power_state_check_timeframe,
|
|
event_timeout=CONF.hyperv.power_state_event_polling_interval,
|
|
filtered_states=list(self._TRANSITION_MAP.keys()),
|
|
get_handler=True)
|
|
|
|
self._vmops = vmops.VMOps()
|
|
self._serial_console_ops = serialconsoleops.SerialConsoleOps()
|
|
self._state_change_callback = state_change_callback
|
|
|
|
def start_listener(self):
|
|
utils.spawn_n(self._listener, self._event_callback)
|
|
|
|
def _event_callback(self, instance_name, instance_power_state):
|
|
# Instance uuid set by Nova. If this is missing, we assume that
|
|
# the instance was not created by Nova and ignore the event.
|
|
instance_uuid = self._vmops.get_instance_uuid(instance_name)
|
|
if instance_uuid:
|
|
self._emit_event(instance_name,
|
|
instance_uuid,
|
|
instance_power_state)
|
|
else:
|
|
LOG.debug("Instance uuid could not be retrieved for instance "
|
|
"%(instance_name)s. Instance state change event will "
|
|
"be ignored. Current power state: %(power_state)s.",
|
|
dict(instance_name=instance_name,
|
|
power_state=instance_power_state))
|
|
|
|
def _emit_event(self, instance_name, instance_uuid, instance_state):
|
|
virt_event = self._get_virt_event(instance_uuid,
|
|
instance_state)
|
|
utils.spawn_n(self._state_change_callback, virt_event)
|
|
|
|
should_enable_metrics = (
|
|
CONF.hyperv.enable_instance_metrics_collection and
|
|
instance_state == constants.HYPERV_VM_STATE_ENABLED)
|
|
if should_enable_metrics:
|
|
utils.spawn_n(self._vmops.configure_instance_metrics,
|
|
instance_name,
|
|
enable_network_metrics=True)
|
|
|
|
utils.spawn_n(self._handle_serial_console_workers,
|
|
instance_name, instance_state)
|
|
|
|
def _handle_serial_console_workers(self, instance_name, instance_state):
|
|
if instance_state == constants.HYPERV_VM_STATE_ENABLED:
|
|
self._serial_console_ops.start_console_handler(instance_name)
|
|
else:
|
|
self._serial_console_ops.stop_console_handler(instance_name)
|
|
|
|
def _get_virt_event(self, instance_uuid, instance_state):
|
|
transition = self._TRANSITION_MAP[instance_state]
|
|
return virtevent.LifecycleEvent(uuid=instance_uuid,
|
|
transition=transition)
|