def pre_op(self, cluster_id, action, policy_data):
nodes = db_api.node_get_all_by_cluster(action.context, cluster_id)
current_size = len(nodes)
if self.adjustment_type == self.EXACT_CAPACITY:
count = self.adjustment_number - current_size
elif self.adjustment_type == self.CHANGE_IN_CAPACITY:
count = self.adjustment_number
elif self.adjustment_type == self.CHANGE_IN_PERCENTAGE:
count = int((self.adjustment_number * current_size) / 100.0)
if count < self.adjustment_min_step:
count = self.adjustment_min_step
if current_size + count > self.max_size:
policy_data.status = base.CHECK_ERROR
policy_data.reason = _('Attempted scaling exceeds maximum size')
elif current_size + count < self.min_size:
policy_data.status = base.CHECK_ERROR
policy_data.reason = _('Attempted scaling exceeds minimum size')
else:
policy_data.status = base.CHECK_OK
policy_data.reason = _('Scaling request validated')
pd = {'count': count}
if action.action == consts.CLUSTER_SCALE_OUT:
if count < 0:
LOG.warning(_LW('Requesting a scale out operation but scaling '
'policy generates a negative count.'))
policy_data['creation'] = pd
elif action.action == consts.CLUSTER_SCALE_IN:
if count > 0:
LOG.warning(_LW('Requesting a scale out operation but scaling '
'policy generates a negative count.'))
policy_data['deletion'] = pd
return policy_data
def do_update(self, context, new_profile_id, **kwargs):
'''Additional logic at the beginning of cluster updating progress.
Check profile and set cluster status to UPDATING.
'''
# Profile type checking is done here because the do_update logic can
# be triggered from API or Webhook
if not new_profile_id:
raise exception.ProfileNotSpecified()
if new_profile_id == self.profile_id:
return True
new_profile = db_api.get_profile(context, new_profile_id)
if not new_profile:
event_mod.warning(context, self, 'update',
_LW('Cluster cannot be updated to a profile '
'that does not exists'))
return False
# Check if profile types match
old_profile = db_api.get_profile(context, self.profile_id)
if old_profile.type != new_profile.type:
event_mod.warning(context, self, 'update',
_LW('Cluster cannot be updated to a different '
'profile type (%(oldt)s->%(newt)s)') % {
'oldt': old_profile.type,
'newt': new_profile.type})
return False
self.set_status(self.UPDATING)
return True
def _register_info(self, name, info):
'''place the new info in the correct location in the registry.
:param path: a string of plugin name.
:param info: reference to a PluginInfo data structure, deregister a
PluginInfo if specified as None.
'''
registry = self._registry
if info is None:
# delete this entry.
LOG.warning(_LW('Removing %(item)s from registry'), {'item': name})
registry.pop(name, None)
return
if name in registry and isinstance(registry[name], PluginInfo):
if registry[name] == info:
return
details = {
'name': name,
'old': str(registry[name].plugin),
'new': str(info.plugin)
}
LOG.warning(_LW('Changing %(name)s from %(old)s to %(new)s'),
details)
else:
LOG.info(_LI('Registering %(name)s -> %(value)s'), {
'name': name, 'value': str(info.plugin)})
info.user_provided = not self.is_global
registry[name] = info
def _register_info(self, name, info):
'''place the new info in the correct location in the registry.
:param path: a string of plugin name.
:param info: reference to a PluginInfo data structure, deregister a
PluginInfo if specified as None.
'''
registry = self._registry
if info is None:
# delete this entry.
msg = _LW("Removing %(item)s from registry")
LOG.warning(msg, {'item': name})
registry.pop(name, None)
return
if name in registry and isinstance(registry[name], PluginInfo):
if registry[name] == info:
return
details = {
'name': name,
'old': str(registry[name].plugin),
'new': str(info.plugin)
}
LOG.warning(_LW('Changing %(name)s from %(old)s to %(new)s'),
details)
else:
msg = _LI('Registering %(name)s -> %(value)s')
LOG.info(msg, {'name': name, 'value': str(info.plugin)})
info.user_provided = not self.is_global
registry[name] = info
def _start_check(self, entry):
"""Routine to call for starting the checking for a cluster.
@param entry: A dict containing the data associated with the cluster.
@return: An updated registry entry record.
"""
if entry['check_type'] == consts.NODE_STATUS_POLLING:
interval = min(entry['interval'], cfg.CONF.periodic_interval_max)
timer = self.TG.add_timer(interval, self._poll_cluster, None,
entry['cluster_id'])
entry['timer'] = timer
elif entry['check_type'] == consts.VM_LIFECYCLE_EVENTS:
LOG.info(_LI("Start listening events for cluster (%s)."),
entry['cluster_id'])
listener = self._add_listener(entry['cluster_id'])
if listener:
entry['listener'] = listener
else:
return None
else:
LOG.warning(_LW("Cluster (%(id)s) check type (%(type)s) is "
"invalid."),
{'id': entry['cluster_id'],
'type': entry['check_type']})
return None
return entry
def do_update(self, context, new_profile_id):
if not new_profile_id:
raise exception.ProfileNotSpecified()
if new_profile_id == self.profile_id:
return True
if not self.physical_id:
return False
# Check if profile types match
old_profile = db_api.get_profile(context, self.profile_id)
new_profile = db_api.get_profile(context, new_profile_id)
if old_profile.type != new_profile.type:
event_mod.warning(_LW('Node cannot be updated to a different '
'profile type (%(oldt)s->%(newt)s)') %
{'oldt': old_profile.type,
'newt': new_profile.type})
return False
res = profile_base.update_object(self, new_profile_id)
if res:
self.rt['profile'] = profile_base.load(context,
new_profile_id)
self.profile_id = new_profile_id
self.updated_time = datetime.datetime.utcnow()
self.store()
return res
def _start_check(self, entry):
"""Routine to call for starting the checking for a cluster.
@param entry: A dict containing the data associated with the cluster.
@return: An updated registry entry record.
"""
if entry['check_type'] == consts.NODE_STATUS_POLLING:
interval = min(entry['interval'], cfg.CONF.periodic_interval_max)
timer = self.TG.add_timer(interval, self._poll_cluster, None,
entry['cluster_id'])
entry['timer'] = timer
elif entry['check_type'] == consts.VM_LIFECYCLE_EVENTS:
LOG.info(_LI("Start listening events for cluster (%s)."),
entry['cluster_id'])
listener = self._add_listener(entry['cluster_id'])
if listener:
entry['listener'] = listener
else:
return None
else:
LOG.warn(_LW("Cluster (%(id)s) check type (%(type)s) is invalid."),
{'id': entry['cluster_id'], 'type': entry['check_type']})
return None
return entry
def _remove_children(self, pid):
if pid in self.children:
self.children.remove(pid)
LOG.info(_LI('Removed dead child %s'), pid)
elif pid in self.stale_children:
self.stale_children.remove(pid)
LOG.info(_LI('Removed stale child %s'), pid)
else:
LOG.warning(_LW('Unrecognized child %s'), pid)
def _remove_children(self, pid):
if pid in self.children:
self.children.remove(pid)
LOG.info(_LI('Removed dead child %s'), pid)
elif pid in self.stale_children:
self.stale_children.remove(pid)
LOG.info(_LI('Removed stale child %s'), pid)
else:
LOG.warning(_LW('Unrecognized child %s'), pid)
def post_op(self, cluster_id, action):
"""Routine to be called after an action has been executed.
For this particular policy, we take this chance to update the pool
maintained by the load-balancer.
:param cluster_id: The ID of the cluster on which a relevant action
has been executed.
:param action: The action object that triggered this operation.
:returns: Nothing.
"""
# TODO(Yanyanhu): Need special handling for cross-az scenario
# which is supported by Neutron lbaas.
if action.action == consts.NODE_CREATE:
nodes_added = [action.node.id]
else:
creation = action.data.get('creation', None)
nodes_added = creation.get('nodes', []) if creation else []
if len(nodes_added) == 0:
return
db_cluster = co.Cluster.get(action.context, cluster_id)
lb_driver = self.lbaas(db_cluster.user, db_cluster.project)
lb_driver.lb_status_timeout = self.lb_status_timeout
cp = cluster_policy.ClusterPolicy.load(action.context, cluster_id,
self.id)
policy_data = self._extract_policy_data(cp.data)
lb_id = policy_data['loadbalancer']
pool_id = policy_data['pool']
port = self.pool_spec.get(self.POOL_PROTOCOL_PORT)
subnet = self.pool_spec.get(self.POOL_SUBNET)
# Add new nodes to lb pool
for node_id in nodes_added:
node = nm.Node.load(action.context, node_id=node_id)
member_id = node.data.get('lb_member', None)
if member_id:
LOG.warning(_LW('Node %(n)s already in lb pool %(p)s.'), {
'n': node_id,
'p': pool_id
})
continue
member_id = lb_driver.member_add(node, lb_id, pool_id, port,
subnet)
if member_id is None:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = _('Failed in adding new node(s) '
'into lb pool.')
return
node.data.update({'lb_member': member_id})
node.store(action.context)
return
def post_op(self, cluster_id, action):
"""Routine to be called after an action has been executed.
For this particular policy, we take this chance to update the pool
maintained by the load-balancer.
:param cluster_id: The ID of the cluster on which a relevant action
has been executed.
:param action: The action object that triggered this operation.
:returns: Nothing.
"""
# TODO(Yanyanhu): Need special handling for cross-az scenario
# which is supported by Neutron lbaas.
if action.action == consts.NODE_CREATE:
nodes_added = [action.node.id]
else:
creation = action.data.get('creation', None)
nodes_added = creation.get('nodes', []) if creation else []
if len(nodes_added) == 0:
return
db_cluster = co.Cluster.get(action.context, cluster_id)
params = self._build_conn_params(db_cluster)
lb_driver = driver_base.SenlinDriver().loadbalancing(params)
cp = cluster_policy.ClusterPolicy.load(action.context, cluster_id,
self.id)
policy_data = self._extract_policy_data(cp.data)
lb_id = policy_data['loadbalancer']
pool_id = policy_data['pool']
port = self.pool_spec.get(self.POOL_PROTOCOL_PORT)
subnet = self.pool_spec.get(self.POOL_SUBNET)
# Add new nodes to lb pool
for node_id in nodes_added:
node = nm.Node.load(action.context, node_id=node_id)
member_id = node.data.get('lb_member', None)
if member_id:
LOG.warning(_LW('Node %(n)s already in lb pool %(p)s.'),
{'n': node_id, 'p': pool_id})
continue
member_id = lb_driver.member_add(node, lb_id, pool_id, port,
subnet)
if member_id is None:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = _('Failed in adding new node(s) '
'into lb pool.')
return
node.data.update({'lb_member': member_id})
node.store(action.context)
return
def release(self, target_id):
"""Release a target lock."""
# Only the engine that owns the lock will be releasing it.
result = self.lock_release(target_id, self.engine_id)
if result is True:
LOG.warn(_LW("Lock was already released on %(target_type) "
"%(target)s!"), {'target_type': self.target_type,
'target': target_id})
else:
LOG.debug("Engine %(engine)s released lock on %(target_type)s "
"%(target)s" % {'engine': self.engine_id,
'target_type': self.target_type,
'target': target_id})
def _add_listener(self, cluster_id):
"""Routine to be executed for adding cluster listener.
@param cluster_id: The UUID of the cluster to be filtered.
@return Nothing.
"""
cluster = objects.Cluster.get(self.ctx, cluster_id)
if not cluster:
LOG.warn(_LW("Cluster (%s) is not found."), cluster_id)
return
project = cluster.project
return self.TG.add_thread(ListenerProc, 'nova', project, cluster_id)
def _add_listener(self, cluster_id):
"""Routine to be executed for adding cluster listener.
@param cluster_id: The UUID of the cluster to be filtered.
@return Nothing.
"""
cluster = objects.Cluster.get(self.ctx, cluster_id)
if not cluster:
LOG.warning(_LW("Cluster (%s) is not found."), cluster_id)
return
project = cluster.project
return self.TG.add_thread(ListenerProc, 'nova', project, cluster_id)
def warning(context, entity, action, status=None, status_reason=None,
timestamp=None):
timestamp = timestamp or timeutils.utcnow(True)
event = Event(timestamp, logging.WARNING, entity,
action=action, status=status, status_reason=status_reason,
user=context.user, project=context.project)
event.store(context)
LOG.warning(_LW('%(name)s [%(id)s] %(action)s - %(status)s: %(reason)s'),
{'name': event.oname,
'id': event.oid and event.oid[:8],
'action': action,
'status': status,
'reason': status_reason})
def load_dispatcher():
"""Load dispatchers."""
global dispatchers
LOG.debug("Loading dispatchers")
dispatchers = named.NamedExtensionManager(
namespace="senlin.dispatchers",
names=cfg.CONF.event_dispatchers,
invoke_on_load=True,
propagate_map_exceptions=True)
if not list(dispatchers):
LOG.warning(_LW("No dispatchers configured for 'senlin.dispatchers'"))
else:
LOG.info(_LI("Loaded dispatchers: %s"), dispatchers.names())
def validate_regions(self, regions):
"""Check whether the given regions are valid.
:param regions: A list of regions for validation.
:returns: A list of regions that are found available on keystone.
"""
known = [r['id'] for r in self.region_list()]
validated = []
for r in regions:
if r in known:
validated.append(r)
else:
LOG.warning(_LW('Region %s is not found.'), r)
return validated
def validate_regions(self, regions):
"""Check whether the given regions are valid.
:param regions: A list of regions for validation.
:returns: A list of regions that are found available on keystone.
"""
known = [r['id'] for r in self.region_list()]
validated = []
for r in regions:
if r in known:
validated.append(r)
else:
LOG.warning(_LW('Region %s is not found.'), r)
return validated
def pre_op(self, cluster_id, action):
"""Routine to be called before an action has been executed.
For this particular policy, we take this chance to update the pool
maintained by the load-balancer.
:param cluster_id: The ID of the cluster on which a relevant action
has been executed.
:param action: The action object that triggered this operation.
:returns: Nothing.
"""
candidates = self._get_delete_candidates(cluster_id, action)
if len(candidates) == 0:
return
db_cluster = db_api.cluster_get(action.context, cluster_id)
params = self._build_conn_params(db_cluster)
lb_driver = driver_base.SenlinDriver().loadbalancing(params)
cp = cluster_policy.ClusterPolicy.load(action.context, cluster_id,
self.id)
policy_data = self._extract_policy_data(cp.data)
lb_id = policy_data['loadbalancer']
pool_id = policy_data['pool']
# Remove nodes that will be deleted from lb pool
for node_id in candidates:
node = node_mod.Node.load(action.context, node_id=node_id)
member_id = node.data.get('lb_member', None)
if member_id is None:
LOG.warning(_LW('Node %(n)s not found in lb pool %(p)s.'),
{'n': node_id, 'p': pool_id})
continue
res = lb_driver.member_remove(lb_id, pool_id, member_id)
if res is not True:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = _('Failed in removing deleted '
'node(s) from lb pool.')
return
deletion = action.data.get('deletion', {})
deletion.update({'count': len(candidates), 'candidates': candidates})
action.data.update({'deletion': deletion})
return
def validate_azs(self, azs):
"""check whether availability zones provided are valid.
:param azs: A list of availability zone names for checking.
:returns: A list of zones that are found available on Nova.
"""
known = self.availability_zone_list()
names = [az['zoneName'] for az in known
if az['zoneState']['available']]
found = []
for az in azs:
if az in names:
found.append(az)
else:
LOG.warning(_LW("Availability zone '%s' is not available."),
az)
return found
def validate_azs(self, azs):
"""check whether availability zones provided are valid.
:param azs: A list of availability zone names for checking.
:returns: A list of zones that are found available on Nova.
"""
known = self.availability_zone_list()
names = [az['zoneName'] for az in known
if az['zoneState']['available']]
found = []
for az in azs:
if az in names:
found.append(az)
else:
LOG.warning(_LW("Availability zone '%s' is not available."),
az)
return found
def _validate_zones(self, cluster):
"""check whether availability zones in spec are valid.
:param cluster: the cluster object that policy attached to.
:returns: A list of zones that are found available on Nova.
"""
azs = self.nova(cluster).availability_zone_list()
azs = [az['zoneName'] for az in azs if az['zoneState']['available']]
avail = {}
for name in self.zones:
if name not in azs:
LOG.warning(_LW('Availability zone %(az)s is not available.'),
{'az': name})
else:
avail[name] = self.zones[name]
return avail
def setup(binary, host):
if cfg.CONF.profiler.enabled:
_notifier = osprofiler.notifier.create(
"Messaging", oslo_messaging, context.get_admin_context().to_dict(),
messaging.TRANSPORT, "senlin", binary, host)
osprofiler.notifier.set(_notifier)
osprofiler.web.enable(cfg.CONF.profiler.hmac_keys)
LOG.warning(_LW("OSProfiler is enabled.\nIt means that any person who "
"knows any of hmac_keys that are specified in "
"/etc/senlin/senlin.conf can trace his requests. \n"
"In real life only an operator can read this file so "
"there is no security issue. Note that even if any "
"person can trigger the profiler, only an admin user "
"can retrieve trace.\n"
"To disable OSProfiler set in senlin.conf:\n"
"[profiler]\nenabled=false"))
else:
osprofiler.web.disable()
def pre_op(self, cluster_id, action):
"""Routine to be called before an action has been executed.
For this particular policy, we take this chance to update the pool
maintained by the load-balancer.
:param cluster_id: The ID of the cluster on which a relevant action
has been executed.
:param action: The action object that triggered this operation.
:returns: Nothing.
"""
candidates = self._get_delete_candidates(cluster_id, action)
if len(candidates) == 0:
return
db_cluster = co.Cluster.get(action.context, cluster_id)
lb_driver = self.lbaas(db_cluster.user, db_cluster.project)
lb_driver.lb_status_timeout = self.lb_status_timeout
cp = cluster_policy.ClusterPolicy.load(action.context, cluster_id,
self.id)
policy_data = self._extract_policy_data(cp.data)
lb_id = policy_data['loadbalancer']
pool_id = policy_data['pool']
# Remove nodes that will be deleted from lb pool
for node_id in candidates:
node = nm.Node.load(action.context, node_id=node_id)
member_id = node.data.get('lb_member', None)
if member_id is None:
LOG.warning(_LW('Node %(n)s not found in lb pool %(p)s.'), {
'n': node_id,
'p': pool_id
})
continue
res = lb_driver.member_remove(lb_id, pool_id, member_id)
if res is not True:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = _('Failed in removing deleted '
'node(s) from lb pool.')
return
return
def do_update(self, obj, new_profile, **params):
"""For subclass to override."""
LOG.warn(_LW("Update operation not supported."))
return True
def do_check(self, obj):
"""For subclass to override."""
LOG.warn(_LW("Check operation not supported."))
return True
def do_get_details(self, obj):
"""For subclass to override."""
LOG.warn(_LW("Get_details operation not supported."))
return {}
def do_leave(self, obj):
"""For subclass to override to perform extra operations."""
LOG.warn(_LW("Join operation not specialized."))
return True
def post_op(self, cluster_id, action):
"""Routine to be called after an action has been executed.
For this particular policy, we take this chance to update the pool
maintained by the load-balancer.
:param cluster_id: The ID of the cluster on which a relevant action
has been executed.
:param action: The action object that triggered this operation.
:returns: Nothing.
"""
nodes_added = action.outputs.get('nodes_added', [])
nodes_removed = action.outputs.get('nodes_removed', [])
if ((len(nodes_added) == 0) and (len(nodes_removed) == 0)):
return
db_cluster = db_api.cluster_get(action.context, cluster_id)
params = self._build_conn_params(db_cluster)
lb_driver = driver_base.SenlinDriver().loadbalancing(params)
cp = cluster_policy.ClusterPolicy.load(action.context, cluster_id,
self.id)
policy_data = self._extract_policy_data(cp.data)
lb_id = policy_data['loadbalancer']
pool_id = policy_data['pool']
port = self.pool_spec.get(self.POOL_PROTOCOL_PORT)
subnet = self.pool_spec.get(self.POOL_SUBNET)
# Remove nodes that have been deleted from lb pool
for node_id in nodes_removed:
node = node_mod.Node.load(action.context, node_id=node_id,
show_deleted=True)
member_id = node.data.get('lb_member', None)
if member_id is None:
LOG.warning(_LW('Node %(n)s not found in lb pool %(p)s.'),
{'n': node_id, 'p': pool_id})
continue
res = lb_driver.member_remove(lb_id, pool_id, member_id)
if res is not True:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = _('Failed in removing deleted '
'node(s) from lb pool.')
return
# Add new nodes to lb pool
for node_id in nodes_added:
node = node_mod.Node.load(action.context, node_id=node_id,
show_deleted=True)
member_id = node.data.get('lb_member', None)
if member_id:
LOG.warning(_LW('Node %(n)s already in lb pool %(p)s.'),
{'n': node_id, 'p': pool_id})
continue
member_id = lb_driver.member_add(node, lb_id, pool_id, port,
subnet)
if member_id is None:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = _('Failed in adding new node(s) '
'into lb pool.')
return
node.data.update({'lb_member': member_id})
node.store(action.context)
return
def do_leave(self, obj):
"""For subclass to override to perform extra operations."""
LOG.warn(_LW("Join operation not specialized."))
return True
def do_join(self, obj, cluster_id):
"""For subclass to override to perform extra operations."""
LOG.warning(_LW("Join operation not specialized."))
return True
def do_validate(self, obj):
"""For subclass to override."""
LOG.warning(_LW("Validate operation not supported."))
return True
def do_update(self, obj, new_profile, **params):
"""For subclass to override."""
LOG.warn(_LW("Update operation not supported."))
return True
def do_check(self, obj):
"""For subclass to override."""
LOG.warn(_LW("Check operation not supported."))
return True
def do_get_details(self, obj):
"""For subclass to override."""
LOG.warn(_LW("Get_details operation not supported."))
return {}
def __call__(self, request):
"""WSGI method that controls (de)serialization and method dispatch."""
action_args = self.get_action_args(request.environ)
action = action_args.pop('action', None)
content_type = request.params.get("ContentType")
try:
deserialized_request = self.dispatch(self.deserializer,
action, request)
action_args.update(deserialized_request)
logging.debug(
('Calling %(controller)s : %(action)s'),
{'controller': self.controller, 'action': action})
action_result = self.dispatch(self.controller, action,
request, **action_args)
except TypeError as err:
logging.error(_LE('Exception handling resource: %s') % err)
msg = _('The server could not comply with the request since '
'it is either malformed or otherwise incorrect.')
err = webob.exc.HTTPBadRequest(msg)
http_exc = translate_exception(err, request.best_match_language())
# NOTE(luisg): We disguise HTTP exceptions, otherwise they will be
# treated by wsgi as responses ready to be sent back and they
# won't make it into the pipeline app that serializes errors
raise exception.HTTPExceptionDisguise(http_exc)
except webob.exc.HTTPException as err:
if not isinstance(err, webob.exc.HTTPError):
# Some HTTPException are actually not errors, they are
# responses ready to be sent back to the users, so we don't
# error log, disguise or translate those
raise
if isinstance(err, webob.exc.HTTPServerError):
logging.error(
_LE("Returning %(code)s to user: %(explanation)s"),
{'code': err.code, 'explanation': err.explanation})
http_exc = translate_exception(err, request.best_match_language())
raise exception.HTTPExceptionDisguise(http_exc)
except exception.SenlinException as err:
raise translate_exception(err, request.best_match_language())
except Exception as err:
log_exception(err, sys.exc_info())
raise translate_exception(err, request.best_match_language())
serializer = self.serializer or serializers.JSONResponseSerializer()
try:
response = webob.Response(request=request)
self.dispatch(serializer, action, response, action_result)
return response
# return unserializable result (typically an exception)
except Exception:
if content_type == "JSON":
try:
err_body = action_result.get_unserialized_body()
serializer.default(action_result, err_body)
except Exception:
logging.warning(_LW("Unable to serialize exception "
"response"))
return action_result
def do_rebuild(self, obj):
"""For subclass to override."""
LOG.warn(_LW("Rebuild operation not specialized."))
return True
def do_rebuild(self, obj):
"""For subclass to override."""
LOG.warn(_LW("Rebuild operation not specialized."))
return True
def post_op(self, cluster_id, action):
"""Routine to be called after an action has been executed.
For this particular policy, we take this chance to update the pool
maintained by the load-balancer.
:param cluster_id: The ID of the cluster on which a relevant action
has been executed.
:param action: The action object that triggered this operation.
:returns: Nothing.
"""
nodes = action.data.get('nodes', [])
if len(nodes) == 0:
return
db_cluster = db_api.cluster_get(action.context, cluster_id)
params = self._build_conn_params(db_cluster)
lb_driver = driver_base.SenlinDriver().loadbalancing(params)
cp = cluster_policy.ClusterPolicy.load(action.context, cluster_id,
self.id)
policy_data = self._extract_policy_data(cp.data)
lb_id = policy_data['loadbalancer']
pool_id = policy_data['pool']
port = self.pool_spec.get(self.POOL_PROTOCOL_PORT)
subnet = self.pool_spec.get(self.POOL_SUBNET)
for node_id in nodes:
node = node_mod.Node.load(action.context, node_id=node_id,
show_deleted=True)
member_id = node.data.get('lb_member')
if (action.action in (consts.CLUSTER_DEL_NODES,
consts.CLUSTER_SCALE_IN))\
or (action.action == consts.CLUSTER_RESIZE and
action.data.get('deletion')):
if member_id is None:
LOG.warning(_LW('Node %(node)s not found in loadbalancer '
'pool %(pool)s.'),
{'node': node_id, 'pool': pool_id})
continue
# Remove nodes that have been deleted from lb pool
res = lb_driver.member_remove(lb_id, pool_id, member_id)
if res is not True:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = _('Failed in removing deleted '
'node from lb pool')
return
if (action.action in (consts.CLUSTER_ADD_NODES,
consts.CLUSTER_SCALE_OUT))\
or (action.action == consts.CLUSTER_RESIZE and
action.data.get('creation')):
if member_id:
LOG.warning(_LW('Node %(node)s already in loadbalancer '
'pool %(pool)s.'),
{'node': node_id, 'pool': pool_id})
continue
res = lb_driver.member_add(node, lb_id, pool_id, port, subnet)
if res is None:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = _('Failed in adding new node '
'into lb pool')
return
node.data.update({'lb_member': res})
node.store(action.context)
return
