def _not_going_to_change():
# Neither the ironic service nor the hardware has erred. The
# node is, for some reason, already in the requested state,
# though we don't know why. eg, perhaps the user previously
# requested the node POWER_ON, the network delayed those IPMI
# packets, and they are trying again -- but the node finally
# responds to the first request, and so the second request
# gets to this check and stops.
# This isn't an error, so we'll clear last_error field
# (from previous operation), log a warning, and return.
node['last_error'] = None
# NOTE(dtantsur): under rare conditions we can get out of sync here
node['power_state'] = curr_state
node['target_power_state'] = states.NOSTATE
node.save()
notify_utils.emit_power_set_notification(task,
fields.NotificationLevel.INFO,
fields.NotificationStatus.END,
new_state)
LOG.warning(
"Not going to change node %(node)s power state because "
"current state = requested state = '%(state)s'.", {
'node': node.uuid,
'state': curr_state
})
def test_emit_power_set_notification(self, mock_cond_emit):
notif_utils.emit_power_set_notification(self.task,
fields.NotificationLevel.DEBUG,
fields.NotificationStatus.END,
states.POWER_ON)
mock_cond_emit.assert_called_once_with(
self.task,
node_objects.NodeSetPowerStateNotification,
node_objects.NodeSetPowerStatePayload,
'power_set',
fields.NotificationLevel.DEBUG,
fields.NotificationStatus.END,
to_power=states.POWER_ON)
def test_emit_power_set_notification(self, mock_cond_emit):
notif_utils.emit_power_set_notification(
self.task,
fields.NotificationLevel.DEBUG,
fields.NotificationStatus.END,
states.POWER_ON)
mock_cond_emit.assert_called_once_with(
self.task,
node_objects.NodeSetPowerStateNotification,
node_objects.NodeSetPowerStatePayload,
'power_set',
fields.NotificationLevel.DEBUG,
fields.NotificationStatus.END,
to_power=states.POWER_ON
)
def _not_going_to_change():
# Neither the ironic service nor the hardware has erred. The
# node is, for some reason, already in the requested state,
# though we don't know why. eg, perhaps the user previously
# requested the node POWER_ON, the network delayed those IPMI
# packets, and they are trying again -- but the node finally
# responds to the first request, and so the second request
# gets to this check and stops.
# This isn't an error, so we'll clear last_error field
# (from previous operation), log a warning, and return.
node['last_error'] = None
# NOTE(dtantsur): under rare conditions we can get out of sync here
node['power_state'] = curr_state
node['target_power_state'] = states.NOSTATE
node.save()
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.INFO,
fields.NotificationStatus.END, new_state)
LOG.warning("Not going to change node %(node)s power state because "
"current state = requested state = '%(state)s'.",
{'node': node.uuid, 'state': curr_state})
def node_power_action(task, new_state, timeout=None):
"""Change power state or reset for a node.
Perform the requested power action if the transition is required.
:param task: a TaskManager instance containing the node to act on.
:param new_state: Any power state from ironic.common.states.
:param timeout: timeout (in seconds) positive integer (> 0) for any
power state. ``None`` indicates to use default timeout.
:raises: InvalidParameterValue when the wrong state is specified
or the wrong driver info is specified.
:raises: StorageError when a failure occurs updating the node's
storage interface upon setting power on.
:raises: other exceptions by the node's power driver if something
wrong occurred during the power action.
"""
notify_utils.emit_power_set_notification(task,
fields.NotificationLevel.INFO,
fields.NotificationStatus.START,
new_state)
node = task.node
if new_state in (states.POWER_ON, states.REBOOT, states.SOFT_REBOOT):
target_state = states.POWER_ON
elif new_state in (states.POWER_OFF, states.SOFT_POWER_OFF):
target_state = states.POWER_OFF
else:
target_state = None
def _not_going_to_change():
# Neither the ironic service nor the hardware has erred. The
# node is, for some reason, already in the requested state,
# though we don't know why. eg, perhaps the user previously
# requested the node POWER_ON, the network delayed those IPMI
# packets, and they are trying again -- but the node finally
# responds to the first request, and so the second request
# gets to this check and stops.
# This isn't an error, so we'll clear last_error field
# (from previous operation), log a warning, and return.
node['last_error'] = None
# NOTE(dtantsur): under rare conditions we can get out of sync here
node['power_state'] = curr_state
node['target_power_state'] = states.NOSTATE
node.save()
notify_utils.emit_power_set_notification(task,
fields.NotificationLevel.INFO,
fields.NotificationStatus.END,
new_state)
LOG.warning(
"Not going to change node %(node)s power state because "
"current state = requested state = '%(state)s'.", {
'node': node.uuid,
'state': curr_state
})
try:
curr_state = task.driver.power.get_power_state(task)
except Exception as e:
with excutils.save_and_reraise_exception():
node['last_error'] = _(
"Failed to change power state to '%(target)s'. "
"Error: %(error)s") % {
'target': new_state,
'error': e
}
node['target_power_state'] = states.NOSTATE
node.save()
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.ERROR,
fields.NotificationStatus.ERROR, new_state)
if curr_state == states.POWER_ON:
if new_state == states.POWER_ON:
_not_going_to_change()
return
elif curr_state == states.POWER_OFF:
if new_state in (states.POWER_OFF, states.SOFT_POWER_OFF):
_not_going_to_change()
return
else:
# if curr_state == states.ERROR:
# be optimistic and continue action
LOG.warning("Driver returns ERROR power state for node %s.", node.uuid)
# Set the target_power_state and clear any last_error, if we're
# starting a new operation. This will expose to other processes
# and clients that work is in progress.
if node['target_power_state'] != target_state:
node['target_power_state'] = target_state
node['last_error'] = None
node.save()
# take power action
try:
if (target_state == states.POWER_ON
and node.provision_state == states.ACTIVE):
task.driver.storage.attach_volumes(task)
if new_state != states.REBOOT:
if ('timeout' in reflection.get_signature(
task.driver.power.set_power_state).parameters):
task.driver.power.set_power_state(task,
new_state,
timeout=timeout)
else:
# FIXME(naohirot):
# After driver composition, we should print power interface
# name here instead of driver.
LOG.warning(
"The set_power_state method of %(driver_name)s "
"doesn't support 'timeout' parameter.",
{'driver_name': node.driver})
task.driver.power.set_power_state(task, new_state)
else:
# TODO(TheJulia): We likely ought to consider toggling
# volume attachments, although we have no mechanism to
# really verify what cinder has connector wise.
if ('timeout' in reflection.get_signature(
task.driver.power.reboot).parameters):
task.driver.power.reboot(task, timeout=timeout)
else:
LOG.warning(
"The reboot method of %(driver_name)s "
"doesn't support 'timeout' parameter.",
{'driver_name': node.driver})
task.driver.power.reboot(task)
except Exception as e:
with excutils.save_and_reraise_exception():
node['target_power_state'] = states.NOSTATE
node['last_error'] = _(
"Failed to change power state to '%(target_state)s' "
"by '%(new_state)s'. Error: %(error)s") % {
'target_state': target_state,
'new_state': new_state,
'error': e
}
node.save()
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.ERROR,
fields.NotificationStatus.ERROR, new_state)
else:
# success!
node['power_state'] = target_state
node['target_power_state'] = states.NOSTATE
node.save()
notify_utils.emit_power_set_notification(task,
fields.NotificationLevel.INFO,
fields.NotificationStatus.END,
new_state)
LOG.info(
'Successfully set node %(node)s power state to '
'%(target_state)s by %(new_state)s.', {
'node': node.uuid,
'target_state': target_state,
'new_state': new_state
})
# NOTE(TheJulia): Similarly to power-on, when we power-off
# a node, we should detach any volume attachments.
if (target_state == states.POWER_OFF
and node.provision_state == states.ACTIVE):
try:
task.driver.storage.detach_volumes(task)
except exception.StorageError as e:
LOG.warning(
"Volume detachment for node %(node)s "
"failed. Error: %(error)s", {
'node': node.uuid,
'error': e
})
def node_power_action(task, new_state, timeout=None):
"""Change power state or reset for a node.
Perform the requested power action if the transition is required.
:param task: a TaskManager instance containing the node to act on.
:param new_state: Any power state from ironic.common.states.
:param timeout: timeout (in seconds) positive integer (> 0) for any
power state. ``None`` indicates to use default timeout.
:raises: InvalidParameterValue when the wrong state is specified
or the wrong driver info is specified.
:raises: StorageError when a failure occurs updating the node's
storage interface upon setting power on.
:raises: other exceptions by the node's power driver if something
wrong occurred during the power action.
"""
notify_utils.emit_power_set_notification(task,
fields.NotificationLevel.INFO,
fields.NotificationStatus.START,
new_state)
node = task.node
if _can_skip_state_change(task, new_state):
return
target_state = _calculate_target_state(new_state)
# Set the target_power_state and clear any last_error, if we're
# starting a new operation. This will expose to other processes
# and clients that work is in progress.
if node['target_power_state'] != target_state:
node['target_power_state'] = target_state
node['last_error'] = None
node.save()
# take power action
try:
if (target_state == states.POWER_ON
and node.provision_state == states.ACTIVE):
task.driver.storage.attach_volumes(task)
if new_state != states.REBOOT:
task.driver.power.set_power_state(task, new_state, timeout=timeout)
else:
# TODO(TheJulia): We likely ought to consider toggling
# volume attachments, although we have no mechanism to
# really verify what cinder has connector wise.
task.driver.power.reboot(task, timeout=timeout)
except Exception as e:
with excutils.save_and_reraise_exception():
node['target_power_state'] = states.NOSTATE
node['last_error'] = _(
"Failed to change power state to '%(target_state)s' "
"by '%(new_state)s'. Error: %(error)s") % {
'target_state': target_state,
'new_state': new_state,
'error': e
}
node.save()
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.ERROR,
fields.NotificationStatus.ERROR, new_state)
else:
# success!
node['power_state'] = target_state
node['target_power_state'] = states.NOSTATE
node.save()
notify_utils.emit_power_set_notification(task,
fields.NotificationLevel.INFO,
fields.NotificationStatus.END,
new_state)
LOG.info(
'Successfully set node %(node)s power state to '
'%(target_state)s by %(new_state)s.', {
'node': node.uuid,
'target_state': target_state,
'new_state': new_state
})
# NOTE(TheJulia): Similarly to power-on, when we power-off
# a node, we should detach any volume attachments.
if (target_state == states.POWER_OFF
and node.provision_state == states.ACTIVE):
try:
task.driver.storage.detach_volumes(task)
except exception.StorageError as e:
LOG.warning(
"Volume detachment for node %(node)s "
"failed. Error: %(error)s", {
'node': node.uuid,
'error': e
})
def _can_skip_state_change(task, new_state):
"""Check if we can ignore the power state change request for the node.
Check if we should ignore the requested power state change. This can occur
if the requested power state is already the same as our current state. This
only works for power on and power off state changes. More complex power
state changes, like reboot, are not skipped.
:param task: a TaskManager instance containing the node to act on.
:param new_state: The requested power state to change to. This can be any
power state from ironic.common.states.
:returns: True if should ignore the requested power state change. False
otherwise
"""
# We only ignore certain state changes. So if the desired new_state is not
# one of them, then we can return early and not do an un-needed
# get_power_state() call
if new_state not in (states.POWER_ON, states.POWER_OFF,
states.SOFT_POWER_OFF):
return False
node = task.node
def _not_going_to_change():
# Neither the ironic service nor the hardware has erred. The
# node is, for some reason, already in the requested state,
# though we don't know why. eg, perhaps the user previously
# requested the node POWER_ON, the network delayed those IPMI
# packets, and they are trying again -- but the node finally
# responds to the first request, and so the second request
# gets to this check and stops.
# This isn't an error, so we'll clear last_error field
# (from previous operation), log a warning, and return.
node['last_error'] = None
# NOTE(dtantsur): under rare conditions we can get out of sync here
node['power_state'] = curr_state
node['target_power_state'] = states.NOSTATE
node.save()
notify_utils.emit_power_set_notification(task,
fields.NotificationLevel.INFO,
fields.NotificationStatus.END,
new_state)
LOG.warning(
"Not going to change node %(node)s power state because "
"current state = requested state = '%(state)s'.", {
'node': node.uuid,
'state': curr_state
})
try:
curr_state = task.driver.power.get_power_state(task)
except Exception as e:
with excutils.save_and_reraise_exception():
node['last_error'] = _(
"Failed to change power state to '%(target)s'. "
"Error: %(error)s") % {
'target': new_state,
'error': e
}
node['target_power_state'] = states.NOSTATE
node.save()
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.ERROR,
fields.NotificationStatus.ERROR, new_state)
if curr_state == states.POWER_ON:
if new_state == states.POWER_ON:
_not_going_to_change()
return True
elif curr_state == states.POWER_OFF:
if new_state in (states.POWER_OFF, states.SOFT_POWER_OFF):
_not_going_to_change()
return True
else:
# if curr_state == states.ERROR:
# be optimistic and continue action
LOG.warning("Driver returns ERROR power state for node %s.", node.uuid)
return False
def node_power_action(task, new_state, timeout=None):
"""Change power state or reset for a node.
Perform the requested power action if the transition is required.
:param task: a TaskManager instance containing the node to act on.
:param new_state: Any power state from ironic.common.states.
:param timeout: timeout (in seconds) positive integer (> 0) for any
power state. ``None`` indicates to use default timeout.
:raises: InvalidParameterValue when the wrong state is specified
or the wrong driver info is specified.
:raises: StorageError when a failure occurs updating the node's
storage interface upon setting power on.
:raises: other exceptions by the node's power driver if something
wrong occurred during the power action.
"""
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.INFO, fields.NotificationStatus.START,
new_state)
node = task.node
if new_state in (states.POWER_ON, states.REBOOT, states.SOFT_REBOOT):
target_state = states.POWER_ON
elif new_state in (states.POWER_OFF, states.SOFT_POWER_OFF):
target_state = states.POWER_OFF
else:
target_state = None
def _not_going_to_change():
# Neither the ironic service nor the hardware has erred. The
# node is, for some reason, already in the requested state,
# though we don't know why. eg, perhaps the user previously
# requested the node POWER_ON, the network delayed those IPMI
# packets, and they are trying again -- but the node finally
# responds to the first request, and so the second request
# gets to this check and stops.
# This isn't an error, so we'll clear last_error field
# (from previous operation), log a warning, and return.
node['last_error'] = None
# NOTE(dtantsur): under rare conditions we can get out of sync here
node['power_state'] = curr_state
node['target_power_state'] = states.NOSTATE
node.save()
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.INFO,
fields.NotificationStatus.END, new_state)
LOG.warning("Not going to change node %(node)s power state because "
"current state = requested state = '%(state)s'.",
{'node': node.uuid, 'state': curr_state})
try:
curr_state = task.driver.power.get_power_state(task)
except Exception as e:
with excutils.save_and_reraise_exception():
node['last_error'] = _(
"Failed to change power state to '%(target)s'. "
"Error: %(error)s") % {'target': new_state, 'error': e}
node['target_power_state'] = states.NOSTATE
node.save()
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.ERROR,
fields.NotificationStatus.ERROR, new_state)
if curr_state == states.POWER_ON:
if new_state == states.POWER_ON:
_not_going_to_change()
return
elif curr_state == states.POWER_OFF:
if new_state in (states.POWER_OFF, states.SOFT_POWER_OFF):
_not_going_to_change()
return
else:
# if curr_state == states.ERROR:
# be optimistic and continue action
LOG.warning("Driver returns ERROR power state for node %s.",
node.uuid)
# Set the target_power_state and clear any last_error, if we're
# starting a new operation. This will expose to other processes
# and clients that work is in progress.
if node['target_power_state'] != target_state:
node['target_power_state'] = target_state
node['last_error'] = None
node.save()
# take power action
try:
if (target_state == states.POWER_ON and
node.provision_state == states.ACTIVE):
task.driver.storage.attach_volumes(task)
if new_state != states.REBOOT:
if ('timeout' in reflection.get_signature(
task.driver.power.set_power_state).parameters):
task.driver.power.set_power_state(task, new_state,
timeout=timeout)
else:
# FIXME(naohirot):
# After driver composition, we should print power interface
# name here instead of driver.
LOG.warning(
"The set_power_state method of %(driver_name)s "
"doesn't support 'timeout' parameter.",
{'driver_name': node.driver})
task.driver.power.set_power_state(task, new_state)
else:
# TODO(TheJulia): We likely ought to consider toggling
# volume attachments, although we have no mechanism to
# really verify what cinder has connector wise.
if ('timeout' in reflection.get_signature(
task.driver.power.reboot).parameters):
task.driver.power.reboot(task, timeout=timeout)
else:
LOG.warning("The reboot method of %(driver_name)s "
"doesn't support 'timeout' parameter.",
{'driver_name': node.driver})
task.driver.power.reboot(task)
except Exception as e:
with excutils.save_and_reraise_exception():
node['target_power_state'] = states.NOSTATE
node['last_error'] = _(
"Failed to change power state to '%(target_state)s' "
"by '%(new_state)s'. Error: %(error)s") % {
'target_state': target_state,
'new_state': new_state,
'error': e}
node.save()
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.ERROR,
fields.NotificationStatus.ERROR, new_state)
else:
# success!
node['power_state'] = target_state
node['target_power_state'] = states.NOSTATE
node.save()
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.INFO, fields.NotificationStatus.END,
new_state)
LOG.info('Successfully set node %(node)s power state to '
'%(target_state)s by %(new_state)s.',
{'node': node.uuid,
'target_state': target_state,
'new_state': new_state})
# NOTE(TheJulia): Similarly to power-on, when we power-off
# a node, we should detach any volume attachments.
if (target_state == states.POWER_OFF and
node.provision_state == states.ACTIVE):
try:
task.driver.storage.detach_volumes(task)
except exception.StorageError as e:
LOG.warning("Volume detachment for node %(node)s "
"failed. Error: %(error)s",
{'node': node.uuid, 'error': e})
def node_power_action(task, new_state):
"""Change power state or reset for a node.
Perform the requested power action if the transition is required.
:param task: a TaskManager instance containing the node to act on.
:param new_state: Any power state from ironic.common.states. If the
state is 'REBOOT' then a reboot will be attempted, otherwise
the node power state is directly set to 'state'.
:raises: InvalidParameterValue when the wrong state is specified
or the wrong driver info is specified.
:raises: other exceptions by the node's power driver if something
wrong occurred during the power action.
"""
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.INFO, fields.NotificationStatus.START, new_state
)
node = task.node
target_state = states.POWER_ON if new_state == states.REBOOT else new_state
if new_state != states.REBOOT:
try:
curr_state = task.driver.power.get_power_state(task)
except Exception as e:
with excutils.save_and_reraise_exception():
node["last_error"] = _("Failed to change power state to '%(target)s'. " "Error: %(error)s") % {
"target": new_state,
"error": e,
}
node["target_power_state"] = states.NOSTATE
node.save()
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.ERROR, fields.NotificationStatus.ERROR, new_state
)
if curr_state == new_state:
# Neither the ironic service nor the hardware has erred. The
# node is, for some reason, already in the requested state,
# though we don't know why. eg, perhaps the user previously
# requested the node POWER_ON, the network delayed those IPMI
# packets, and they are trying again -- but the node finally
# responds to the first request, and so the second request
# gets to this check and stops.
# This isn't an error, so we'll clear last_error field
# (from previous operation), log a warning, and return.
node["last_error"] = None
# NOTE(dtantsur): under rare conditions we can get out of sync here
node["power_state"] = new_state
node["target_power_state"] = states.NOSTATE
node.save()
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.INFO, fields.NotificationStatus.END, new_state
)
LOG.warning(
_LW(
"Not going to change node %(node)s power "
"state because current state = requested state "
"= '%(state)s'."
),
{"node": node.uuid, "state": curr_state},
)
return
if curr_state == states.ERROR:
# be optimistic and continue action
LOG.warning(_LW("Driver returns ERROR power state for node %s."), node.uuid)
# Set the target_power_state and clear any last_error, if we're
# starting a new operation. This will expose to other processes
# and clients that work is in progress.
if node["target_power_state"] != target_state:
node["target_power_state"] = target_state
node["last_error"] = None
node.save()
# take power action
try:
if new_state != states.REBOOT:
task.driver.power.set_power_state(task, new_state)
else:
task.driver.power.reboot(task)
except Exception as e:
with excutils.save_and_reraise_exception():
node["target_power_state"] = states.NOSTATE
node["last_error"] = _("Failed to change power state to '%(target)s'. " "Error: %(error)s") % {
"target": target_state,
"error": e,
}
node.save()
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.ERROR, fields.NotificationStatus.ERROR, new_state
)
else:
# success!
node["power_state"] = target_state
node["target_power_state"] = states.NOSTATE
node.save()
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.INFO, fields.NotificationStatus.END, new_state
)
LOG.info(
_LI("Successfully set node %(node)s power state to " "%(state)s."),
{"node": node.uuid, "state": target_state},
)
def node_power_action(task, new_state, timeout=None):
"""Change power state or reset for a node.
Perform the requested power action if the transition is required.
:param task: a TaskManager instance containing the node to act on.
:param new_state: Any power state from ironic.common.states.
:param timeout: timeout (in seconds) positive integer (> 0) for any
power state. ``None`` indicates to use default timeout.
:raises: InvalidParameterValue when the wrong state is specified
or the wrong driver info is specified.
:raises: StorageError when a failure occurs updating the node's
storage interface upon setting power on.
:raises: other exceptions by the node's power driver if something
wrong occurred during the power action.
"""
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.INFO, fields.NotificationStatus.START,
new_state)
node = task.node
if _can_skip_state_change(task, new_state):
return
target_state = _calculate_target_state(new_state)
# Set the target_power_state and clear any last_error, if we're
# starting a new operation. This will expose to other processes
# and clients that work is in progress.
if node['target_power_state'] != target_state:
node['target_power_state'] = target_state
node['last_error'] = None
node.save()
# take power action
try:
if (target_state == states.POWER_ON
and node.provision_state == states.ACTIVE):
task.driver.storage.attach_volumes(task)
if new_state != states.REBOOT:
task.driver.power.set_power_state(task, new_state, timeout=timeout)
else:
# TODO(TheJulia): We likely ought to consider toggling
# volume attachments, although we have no mechanism to
# really verify what cinder has connector wise.
task.driver.power.reboot(task, timeout=timeout)
except Exception as e:
with excutils.save_and_reraise_exception():
node['target_power_state'] = states.NOSTATE
node['last_error'] = _(
"Failed to change power state to '%(target_state)s' "
"by '%(new_state)s'. Error: %(error)s") % {
'target_state': target_state,
'new_state': new_state,
'error': e}
node.save()
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.ERROR,
fields.NotificationStatus.ERROR, new_state)
else:
# success!
node['power_state'] = target_state
node['target_power_state'] = states.NOSTATE
node.save()
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.INFO, fields.NotificationStatus.END,
new_state)
LOG.info('Successfully set node %(node)s power state to '
'%(target_state)s by %(new_state)s.',
{'node': node.uuid,
'target_state': target_state,
'new_state': new_state})
# NOTE(TheJulia): Similarly to power-on, when we power-off
# a node, we should detach any volume attachments.
if (target_state == states.POWER_OFF
and node.provision_state == states.ACTIVE):
try:
task.driver.storage.detach_volumes(task)
except exception.StorageError as e:
LOG.warning("Volume detachment for node %(node)s "
"failed. Error: %(error)s",
{'node': node.uuid, 'error': e})
def _can_skip_state_change(task, new_state):
"""Check if we can ignore the power state change request for the node.
Check if we should ignore the requested power state change. This can occur
if the requested power state is already the same as our current state. This
only works for power on and power off state changes. More complex power
state changes, like reboot, are not skipped.
:param task: a TaskManager instance containing the node to act on.
:param new_state: The requested power state to change to. This can be any
power state from ironic.common.states.
:returns: True if should ignore the requested power state change. False
otherwise
"""
# We only ignore certain state changes. So if the desired new_state is not
# one of them, then we can return early and not do an un-needed
# get_power_state() call
if new_state not in (states.POWER_ON, states.POWER_OFF,
states.SOFT_POWER_OFF):
return False
node = task.node
def _not_going_to_change():
# Neither the ironic service nor the hardware has erred. The
# node is, for some reason, already in the requested state,
# though we don't know why. eg, perhaps the user previously
# requested the node POWER_ON, the network delayed those IPMI
# packets, and they are trying again -- but the node finally
# responds to the first request, and so the second request
# gets to this check and stops.
# This isn't an error, so we'll clear last_error field
# (from previous operation), log a warning, and return.
node['last_error'] = None
# NOTE(dtantsur): under rare conditions we can get out of sync here
node['power_state'] = curr_state
node['target_power_state'] = states.NOSTATE
node.save()
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.INFO,
fields.NotificationStatus.END, new_state)
LOG.warning("Not going to change node %(node)s power state because "
"current state = requested state = '%(state)s'.",
{'node': node.uuid, 'state': curr_state})
try:
curr_state = task.driver.power.get_power_state(task)
except Exception as e:
with excutils.save_and_reraise_exception():
node['last_error'] = _(
"Failed to change power state to '%(target)s'. "
"Error: %(error)s") % {'target': new_state, 'error': e}
node['target_power_state'] = states.NOSTATE
node.save()
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.ERROR,
fields.NotificationStatus.ERROR, new_state)
if curr_state == states.POWER_ON:
if new_state == states.POWER_ON:
_not_going_to_change()
return True
elif curr_state == states.POWER_OFF:
if new_state in (states.POWER_OFF, states.SOFT_POWER_OFF):
_not_going_to_change()
return True
else:
# if curr_state == states.ERROR:
# be optimistic and continue action
LOG.warning("Driver returns ERROR power state for node %s.",
node.uuid)
return False
def node_power_action(task, new_state):
"""Change power state or reset for a node.
Perform the requested power action if the transition is required.
:param task: a TaskManager instance containing the node to act on.
:param new_state: Any power state from ironic.common.states. If the
state is 'REBOOT' then a reboot will be attempted, otherwise
the node power state is directly set to 'state'.
:raises: InvalidParameterValue when the wrong state is specified
or the wrong driver info is specified.
:raises: other exceptions by the node's power driver if something
wrong occurred during the power action.
"""
notify_utils.emit_power_set_notification(task,
fields.NotificationLevel.INFO,
fields.NotificationStatus.START,
new_state)
node = task.node
target_state = states.POWER_ON if new_state == states.REBOOT else new_state
if new_state != states.REBOOT:
try:
curr_state = task.driver.power.get_power_state(task)
except Exception as e:
with excutils.save_and_reraise_exception():
node['last_error'] = _(
"Failed to change power state to '%(target)s'. "
"Error: %(error)s") % {
'target': new_state,
'error': e
}
node['target_power_state'] = states.NOSTATE
node.save()
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.ERROR,
fields.NotificationStatus.ERROR, new_state)
if curr_state == new_state:
# Neither the ironic service nor the hardware has erred. The
# node is, for some reason, already in the requested state,
# though we don't know why. eg, perhaps the user previously
# requested the node POWER_ON, the network delayed those IPMI
# packets, and they are trying again -- but the node finally
# responds to the first request, and so the second request
# gets to this check and stops.
# This isn't an error, so we'll clear last_error field
# (from previous operation), log a warning, and return.
node['last_error'] = None
# NOTE(dtantsur): under rare conditions we can get out of sync here
node['power_state'] = new_state
node['target_power_state'] = states.NOSTATE
node.save()
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.INFO,
fields.NotificationStatus.END, new_state)
LOG.warning(
_LW("Not going to change node %(node)s power "
"state because current state = requested state "
"= '%(state)s'."), {
'node': node.uuid,
'state': curr_state
})
return
if curr_state == states.ERROR:
# be optimistic and continue action
LOG.warning(_LW("Driver returns ERROR power state for node %s."),
node.uuid)
# Set the target_power_state and clear any last_error, if we're
# starting a new operation. This will expose to other processes
# and clients that work is in progress.
if node['target_power_state'] != target_state:
node['target_power_state'] = target_state
node['last_error'] = None
node.save()
# take power action
try:
if new_state != states.REBOOT:
task.driver.power.set_power_state(task, new_state)
else:
task.driver.power.reboot(task)
except Exception as e:
with excutils.save_and_reraise_exception():
node['target_power_state'] = states.NOSTATE
node['last_error'] = _(
"Failed to change power state to '%(target)s'. "
"Error: %(error)s") % {
'target': target_state,
'error': e
}
node.save()
notify_utils.emit_power_set_notification(
task, fields.NotificationLevel.ERROR,
fields.NotificationStatus.ERROR, new_state)
else:
# success!
node['power_state'] = target_state
node['target_power_state'] = states.NOSTATE
node.save()
notify_utils.emit_power_set_notification(task,
fields.NotificationLevel.INFO,
fields.NotificationStatus.END,
new_state)
LOG.info(
_LI('Successfully set node %(node)s power state to '
'%(state)s.'), {
'node': node.uuid,
'state': target_state
})
