364 lines
12 KiB
Python
364 lines
12 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
|
|
|
# Copyright (c) 2012 OpenStack Foundation
|
|
# 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.
|
|
|
|
"""Functionality related to notifications common to multiple layers of
|
|
the system.
|
|
"""
|
|
|
|
from oslo.config import cfg
|
|
|
|
from nova.compute import instance_types
|
|
import nova.context
|
|
from nova import db
|
|
from nova.image import glance
|
|
from nova import network
|
|
from nova.network import model as network_model
|
|
from nova.openstack.common import excutils
|
|
from nova.openstack.common import log
|
|
from nova.openstack.common.notifier import api as notifier_api
|
|
from nova.openstack.common import timeutils
|
|
from nova import utils
|
|
|
|
LOG = log.getLogger(__name__)
|
|
|
|
notify_opts = [
|
|
cfg.StrOpt('notify_on_state_change', default=None,
|
|
help='If set, send compute.instance.update notifications on instance '
|
|
'state changes. Valid values are None for no notifications, '
|
|
'"vm_state" for notifications on VM state changes, or '
|
|
'"vm_and_task_state" for notifications on VM and task state '
|
|
'changes.'),
|
|
cfg.BoolOpt('notify_on_any_change', default=False,
|
|
help='If set, send compute.instance.update notifications on instance '
|
|
'state changes. Valid values are False for no notifications, '
|
|
'True for notifications on any instance changes.'),
|
|
cfg.BoolOpt('notify_api_faults', default=False,
|
|
help='If set, send api.fault notifications on caught exceptions '
|
|
'in the API service.'),
|
|
]
|
|
|
|
|
|
CONF = cfg.CONF
|
|
CONF.register_opts(notify_opts)
|
|
|
|
|
|
def send_api_fault(url, status, exception):
|
|
"""Send an api.fault notification."""
|
|
|
|
if not CONF.notify_api_faults:
|
|
return
|
|
|
|
payload = {'url': url, 'exception': str(exception), 'status': status}
|
|
|
|
publisher_id = notifier_api.publisher_id("api")
|
|
|
|
notifier_api.notify(None, publisher_id, 'api.fault', notifier_api.ERROR,
|
|
payload)
|
|
|
|
|
|
def send_update(context, old_instance, new_instance, service=None, host=None):
|
|
"""Send compute.instance.update notification to report any changes occurred
|
|
in that instance
|
|
"""
|
|
|
|
if not CONF.notify_on_any_change and not CONF.notify_on_state_change:
|
|
# skip all this if updates are disabled
|
|
return
|
|
|
|
update_with_state_change = False
|
|
|
|
old_vm_state = old_instance["vm_state"]
|
|
new_vm_state = new_instance["vm_state"]
|
|
old_task_state = old_instance["task_state"]
|
|
new_task_state = new_instance["task_state"]
|
|
|
|
# we should check if we need to send a state change or a regular
|
|
# notification
|
|
if old_vm_state != new_vm_state:
|
|
# yes, the vm state is changing:
|
|
update_with_state_change = True
|
|
elif CONF.notify_on_state_change:
|
|
if (CONF.notify_on_state_change.lower() == "vm_and_task_state" and
|
|
old_task_state != new_task_state):
|
|
# yes, the task state is changing:
|
|
update_with_state_change = True
|
|
|
|
if update_with_state_change:
|
|
# send a notification with state changes
|
|
# value of verify_states need not be True as the check for states is
|
|
# already done here
|
|
send_update_with_states(context, new_instance, old_vm_state,
|
|
new_vm_state, old_task_state, new_task_state, service, host)
|
|
|
|
else:
|
|
try:
|
|
_send_instance_update_notification(context, new_instance,
|
|
service=service, host=host)
|
|
except Exception:
|
|
LOG.exception(_("Failed to send state update notification"),
|
|
instance=new_instance)
|
|
|
|
|
|
def send_update_with_states(context, instance, old_vm_state, new_vm_state,
|
|
old_task_state, new_task_state, service="compute", host=None,
|
|
verify_states=False):
|
|
"""Send compute.instance.update notification to report changes if there
|
|
are any, in the instance
|
|
"""
|
|
|
|
if not CONF.notify_on_state_change:
|
|
# skip all this if updates are disabled
|
|
return
|
|
|
|
fire_update = True
|
|
# send update notification by default
|
|
|
|
if verify_states:
|
|
# check whether we need to send notification related to state changes
|
|
fire_update = False
|
|
# do not send notification if the conditions for vm and(or) task state
|
|
# are not satisfied
|
|
if old_vm_state != new_vm_state:
|
|
# yes, the vm state is changing:
|
|
fire_update = True
|
|
elif CONF.notify_on_state_change:
|
|
if (CONF.notify_on_state_change.lower() == "vm_and_task_state" and
|
|
old_task_state != new_task_state):
|
|
# yes, the task state is changing:
|
|
fire_update = True
|
|
|
|
if fire_update:
|
|
# send either a state change or a regular notification
|
|
try:
|
|
_send_instance_update_notification(context, instance,
|
|
old_vm_state=old_vm_state, old_task_state=old_task_state,
|
|
new_vm_state=new_vm_state, new_task_state=new_task_state,
|
|
service=service, host=host)
|
|
except Exception:
|
|
LOG.exception(_("Failed to send state update notification"),
|
|
instance=instance)
|
|
|
|
|
|
def _send_instance_update_notification(context, instance, old_vm_state=None,
|
|
old_task_state=None, new_vm_state=None, new_task_state=None,
|
|
service="compute", host=None):
|
|
"""Send 'compute.instance.update' notification to inform observers
|
|
about instance state changes"""
|
|
|
|
payload = info_from_instance(context, instance, None, None)
|
|
|
|
if not new_vm_state:
|
|
new_vm_state = instance["vm_state"]
|
|
if not new_task_state:
|
|
new_task_state = instance["task_state"]
|
|
|
|
states_payload = {
|
|
"old_state": old_vm_state,
|
|
"state": new_vm_state,
|
|
"old_task_state": old_task_state,
|
|
"new_task_state": new_task_state,
|
|
}
|
|
|
|
payload.update(states_payload)
|
|
|
|
# add audit fields:
|
|
(audit_start, audit_end) = audit_period_bounds(current_period=True)
|
|
payload["audit_period_beginning"] = audit_start
|
|
payload["audit_period_ending"] = audit_end
|
|
|
|
# add bw usage info:
|
|
bw = bandwidth_usage(instance, audit_start)
|
|
payload["bandwidth"] = bw
|
|
|
|
publisher_id = notifier_api.publisher_id(service, host)
|
|
|
|
notifier_api.notify(context, publisher_id, 'compute.instance.update',
|
|
notifier_api.INFO, payload)
|
|
|
|
|
|
def audit_period_bounds(current_period=False):
|
|
"""Get the start and end of the relevant audit usage period
|
|
|
|
:param current_period: if True, this will generate a usage for the
|
|
current usage period; if False, this will generate a usage for the
|
|
previous audit period.
|
|
"""
|
|
|
|
begin, end = utils.last_completed_audit_period()
|
|
if current_period:
|
|
audit_start = end
|
|
audit_end = timeutils.utcnow()
|
|
else:
|
|
audit_start = begin
|
|
audit_end = end
|
|
|
|
return (audit_start, audit_end)
|
|
|
|
|
|
def bandwidth_usage(instance_ref, audit_start,
|
|
ignore_missing_network_data=True):
|
|
"""Get bandwidth usage information for the instance for the
|
|
specified audit period.
|
|
"""
|
|
|
|
admin_context = nova.context.get_admin_context(read_deleted='yes')
|
|
|
|
if (instance_ref.get('info_cache') and
|
|
instance_ref['info_cache'].get('network_info') is not None):
|
|
|
|
cached_info = instance_ref['info_cache']['network_info']
|
|
nw_info = network_model.NetworkInfo.hydrate(cached_info)
|
|
else:
|
|
try:
|
|
nw_info = network.API().get_instance_nw_info(admin_context,
|
|
instance_ref)
|
|
except Exception:
|
|
try:
|
|
with excutils.save_and_reraise_exception():
|
|
LOG.exception(_('Failed to get nw_info'),
|
|
instance=instance_ref)
|
|
except Exception:
|
|
if ignore_missing_network_data:
|
|
return
|
|
raise
|
|
|
|
macs = [vif['address'] for vif in nw_info]
|
|
uuids = [instance_ref["uuid"]]
|
|
|
|
bw_usages = db.bw_usage_get_by_uuids(admin_context, uuids, audit_start)
|
|
bw_usages = [b for b in bw_usages if b.mac in macs]
|
|
|
|
bw = {}
|
|
|
|
for b in bw_usages:
|
|
label = 'net-name-not-found-%s' % b['mac']
|
|
for vif in nw_info:
|
|
if vif['address'] == b['mac']:
|
|
label = vif['network']['label']
|
|
break
|
|
|
|
bw[label] = dict(bw_in=b.bw_in, bw_out=b.bw_out)
|
|
|
|
return bw
|
|
|
|
|
|
def image_meta(system_metadata):
|
|
"""Format image metadata for use in notifications from the instance
|
|
system metadata.
|
|
"""
|
|
image_meta = {}
|
|
for md_key, md_value in system_metadata.iteritems():
|
|
if md_key.startswith('image_'):
|
|
image_meta[md_key[6:]] = md_value
|
|
|
|
return image_meta
|
|
|
|
|
|
def info_from_instance(context, instance_ref, network_info,
|
|
system_metadata, **kw):
|
|
"""Get detailed instance information for an instance which is common to all
|
|
notifications.
|
|
|
|
:param network_info: network_info provided if not None
|
|
:param system_metadata: system_metadata DB entries for the instance,
|
|
if not None. *NOTE*: Currently unused here in trunk, but needed for
|
|
potential custom modifications.
|
|
"""
|
|
|
|
def null_safe_str(s):
|
|
return str(s) if s else ''
|
|
|
|
image_ref_url = glance.generate_image_url(instance_ref['image_ref'])
|
|
|
|
instance_type = instance_types.extract_instance_type(instance_ref)
|
|
instance_type_name = instance_type.get('name', '')
|
|
|
|
if system_metadata is None:
|
|
system_metadata = utils.metadata_to_dict(
|
|
instance_ref['system_metadata'])
|
|
|
|
instance_info = dict(
|
|
# Owner properties
|
|
tenant_id=instance_ref['project_id'],
|
|
user_id=instance_ref['user_id'],
|
|
|
|
# Identity properties
|
|
instance_id=instance_ref['uuid'],
|
|
display_name=instance_ref['display_name'],
|
|
reservation_id=instance_ref['reservation_id'],
|
|
hostname=instance_ref['hostname'],
|
|
|
|
# Type properties
|
|
instance_type=instance_type_name,
|
|
instance_type_id=instance_ref['instance_type_id'],
|
|
architecture=instance_ref['architecture'],
|
|
|
|
# Capacity properties
|
|
memory_mb=instance_ref['memory_mb'],
|
|
disk_gb=instance_ref['root_gb'] + instance_ref['ephemeral_gb'],
|
|
vcpus=instance_ref['vcpus'],
|
|
# Note(dhellmann): This makes the disk_gb value redundant, but
|
|
# we are keeping it for backwards-compatibility with existing
|
|
# users of notifications.
|
|
root_gb=instance_ref['root_gb'],
|
|
ephemeral_gb=instance_ref['ephemeral_gb'],
|
|
|
|
# Location properties
|
|
host=instance_ref['host'],
|
|
availability_zone=instance_ref['availability_zone'],
|
|
|
|
# Date properties
|
|
created_at=str(instance_ref['created_at']),
|
|
# Nova's deleted vs terminated instance terminology is confusing,
|
|
# this should be when the instance was deleted (i.e. terminated_at),
|
|
# not when the db record was deleted. (mdragon)
|
|
deleted_at=null_safe_str(instance_ref.get('terminated_at')),
|
|
launched_at=null_safe_str(instance_ref.get('launched_at')),
|
|
|
|
# Image properties
|
|
image_ref_url=image_ref_url,
|
|
os_type=instance_ref['os_type'],
|
|
kernel_id=instance_ref['kernel_id'],
|
|
ramdisk_id=instance_ref['ramdisk_id'],
|
|
|
|
# Status properties
|
|
state=instance_ref['vm_state'],
|
|
state_description=null_safe_str(instance_ref.get('task_state')),
|
|
|
|
# accessIPs
|
|
access_ip_v4=instance_ref['access_ip_v4'],
|
|
access_ip_v6=instance_ref['access_ip_v6'],
|
|
)
|
|
|
|
if network_info is not None:
|
|
fixed_ips = []
|
|
for vif in network_info:
|
|
for ip in vif.fixed_ips():
|
|
ip["label"] = vif["network"]["label"]
|
|
fixed_ips.append(ip)
|
|
instance_info['fixed_ips'] = fixed_ips
|
|
|
|
# add image metadata
|
|
image_meta_props = image_meta(system_metadata)
|
|
instance_info["image_meta"] = image_meta_props
|
|
|
|
# add instance metadata
|
|
instance_info['metadata'] = instance_ref['metadata']
|
|
|
|
instance_info.update(kw)
|
|
return instance_info
|