def _get_resource(self, plugin, context, resource, resource_id,
clean_session=True):
with utils.clean_session(context.session) if clean_session else (
dummy_context_mgr()):
obj_getter = getattr(plugin, 'get_' + resource)
obj = obj_getter(context, resource_id)
return obj
def _update_resource(self,
plugin,
context,
resource,
resource_id,
attrs,
do_notify=True,
clean_session=True):
# REVISIT(rkukura): Do update.start notification?
# REVISIT(rkukura): Check authorization?
with utils.clean_session(
context.session) if clean_session else (dummy_context_mgr()):
obj_getter = getattr(plugin, 'get_' + resource)
orig_obj = obj_getter(context, resource_id)
action = 'update_' + resource
obj_updater = getattr(plugin, action)
obj = obj_updater(context, resource_id, {resource: attrs})
if do_notify:
self._nova_notifier.send_network_change(
action, orig_obj, {resource: obj})
# REVISIT(rkukura): Do update.end notification?
if cfg.CONF.dhcp_agent_notification:
self._dhcp_agent_notifier.notify(context, {resource: obj},
resource + '.update.end')
return obj
def _get_resources(self, plugin, context, resource_plural, filters=None,
clean_session=True):
with utils.clean_session(context.session) if clean_session else (
dummy_context_mgr()):
obj_getter = getattr(plugin, 'get_' + resource_plural)
obj = obj_getter(context, filters)
return obj
def _create_resource(self,
plugin,
context,
resource,
attrs,
do_notify=True,
clean_session=True):
# REVISIT(rkukura): Do create.start notification?
# REVISIT(rkukura): Check authorization?
with utils.clean_session(
context.session) if clean_session else (dummy_context_mgr()):
reservation = None
if plugin in [
self._group_policy_plugin, self._servicechain_plugin
]:
reservation = quota.QUOTAS.make_reservation(
context, context.tenant_id, {resource: 1}, plugin)
action = 'create_' + resource
obj_creator = getattr(plugin, action)
try:
obj = obj_creator(context, {resource: attrs})
except Exception:
# In case of failure the plugin will always raise an
# exception. Cancel the reservation
with excutils.save_and_reraise_exception():
if reservation:
quota.QUOTAS.cancel_reservation(
context, reservation.reservation_id)
if reservation:
quota.QUOTAS.commit_reservation(context,
reservation.reservation_id)
# At this point the implicit resource creation is successfull,
# so we should be calling:
# resource_registry.set_resources_dirty(context)
# to appropriately notify the quota engine. However, the above
# call begins a new transaction and we want to avoid that.
# Moreover, it can be safely assumed that any implicit resource
# creation via this local_api is always in response to an
# explicit resource creation request, and hence the above
# method will be invoked in the API layer.
if do_notify:
if BATCH_NOTIFICATIONS and not clean_session:
outer_transaction = (_get_outer_transaction(
context._session.transaction))
else:
outer_transaction = None
args = [action, {}, {resource: obj}]
send_or_queue_notification(outer_transaction,
self._nova_notifier,
'send_network_change', args)
# REVISIT(rkukura): Do create.end notification?
if cfg.CONF.dhcp_agent_notification:
args = [context, {resource: obj}, resource + '.create.end']
send_or_queue_notification(outer_transaction,
self._dhcp_agent_notifier,
'notify', args)
return obj
def _get_resource(self,
plugin,
context,
resource,
resource_id,
clean_session=True):
with utils.clean_session(
context.session) if clean_session else (dummy_context_mgr()):
obj_getter = getattr(plugin, 'get_' + resource)
obj = obj_getter(context, resource_id)
return obj
def _get_resources(self,
plugin,
context,
resource_plural,
filters=None,
clean_session=True):
with utils.clean_session(
context.session) if clean_session else (dummy_context_mgr()):
obj_getter = getattr(plugin, 'get_' + resource_plural)
obj = obj_getter(context, filters)
return obj
def _create_resource(self, plugin, context, resource, attrs):
# REVISIT(rkukura): Do create.start notification?
# REVISIT(rkukura): Check authorization?
# REVISIT(rkukura): Do quota?
with utils.clean_session(context.session):
action = "create_" + resource
obj_creator = getattr(plugin, action)
obj = obj_creator(context, {resource: attrs})
self._nova_notifier.send_network_change(action, {}, {resource: obj})
# REVISIT(rkukura): Do create.end notification?
if cfg.CONF.dhcp_agent_notification:
self._dhcp_agent_notifier.notify(context, {resource: obj}, resource + ".create.end")
return obj
def _delete_resource(self, plugin, context, resource, resource_id):
# REVISIT(rkukura): Do delete.start notification?
# REVISIT(rkukura): Check authorization?
with utils.clean_session(context.session):
obj_getter = getattr(plugin, "get_" + resource)
obj = obj_getter(context, resource_id)
action = "delete_" + resource
obj_deleter = getattr(plugin, action)
obj_deleter(context, resource_id)
self._nova_notifier.send_network_change(action, {}, {resource: obj})
# REVISIT(rkukura): Do delete.end notification?
if cfg.CONF.dhcp_agent_notification:
self._dhcp_agent_notifier.notify(context, {resource: obj}, resource + ".delete.end")
def _create_resource(self, plugin, context, resource, attrs):
# REVISIT(rkukura): Do create.start notification?
# REVISIT(rkukura): Check authorization?
# REVISIT(rkukura): Do quota?
with utils.clean_session(context.session):
action = 'create_' + resource
obj_creator = getattr(plugin, action)
obj = obj_creator(context, {resource: attrs})
self._nova_notifier.send_network_change(action, {},
{resource: obj})
# REVISIT(rkukura): Do create.end notification?
if cfg.CONF.dhcp_agent_notification:
self._dhcp_agent_notifier.notify(context, {resource: obj},
resource + '.create.end')
return obj
def _delete_resource(self, plugin, context, resource, resource_id):
# REVISIT(rkukura): Do delete.start notification?
# REVISIT(rkukura): Check authorization?
with utils.clean_session(context.session):
obj_getter = getattr(plugin, 'get_' + resource)
obj = obj_getter(context, resource_id)
action = 'delete_' + resource
obj_deleter = getattr(plugin, action)
obj_deleter(context, resource_id)
self._nova_notifier.send_network_change(action, {},
{resource: obj})
# REVISIT(rkukura): Do delete.end notification?
if cfg.CONF.dhcp_agent_notification:
self._dhcp_agent_notifier.notify(context, {resource: obj},
resource + '.delete.end')
def _delete_resource(self, plugin, context, resource, resource_id,
do_notify=True, clean_session=True):
# REVISIT(rkukura): Do delete.start notification?
# REVISIT(rkukura): Check authorization?
with utils.clean_session(context.session) if clean_session else (
dummy_context_mgr()):
obj_getter = getattr(plugin, 'get_' + resource)
obj = obj_getter(context, resource_id)
action = 'delete_' + resource
obj_deleter = getattr(plugin, action)
obj_deleter(context, resource_id)
if do_notify:
self._nova_notifier.send_network_change(action, {},
{resource: obj})
# REVISIT(rkukura): Do delete.end notification?
if cfg.CONF.dhcp_agent_notification:
self._dhcp_agent_notifier.notify(context,
{resource: obj},
resource + '.delete.end')
def _update_resource(self, plugin, context, resource, resource_id, attrs,
do_notify=True):
# REVISIT(rkukura): Do update.start notification?
# REVISIT(rkukura): Check authorization?
with utils.clean_session(context.session):
obj_getter = getattr(plugin, 'get_' + resource)
orig_obj = obj_getter(context, resource_id)
action = 'update_' + resource
obj_updater = getattr(plugin, action)
obj = obj_updater(context, resource_id, {resource: attrs})
if do_notify:
self._nova_notifier.send_network_change(action, orig_obj,
{resource: obj})
# REVISIT(rkukura): Do update.end notification?
if cfg.CONF.dhcp_agent_notification:
self._dhcp_agent_notifier.notify(context,
{resource: obj},
resource + '.update.end')
return obj
def _create_resource(self, plugin, context, resource, attrs,
do_notify=True, clean_session=True):
# REVISIT(rkukura): Do create.start notification?
# REVISIT(rkukura): Check authorization?
with utils.clean_session(context.session) if clean_session else (
dummy_context_mgr()):
reservation = None
if plugin in [self._group_policy_plugin,
self._servicechain_plugin]:
reservation = quota.QUOTAS.make_reservation(
context, context.tenant_id, {resource: 1}, plugin)
action = 'create_' + resource
obj_creator = getattr(plugin, action)
try:
obj = obj_creator(context, {resource: attrs})
except Exception:
# In case of failure the plugin will always raise an
# exception. Cancel the reservation
with excutils.save_and_reraise_exception():
if reservation:
quota.QUOTAS.cancel_reservation(
context, reservation.reservation_id)
if reservation:
quota.QUOTAS.commit_reservation(
context, reservation.reservation_id)
# At this point the implicit resource creation is successfull,
# so we should be calling:
# resource_registry.set_resources_dirty(context)
# to appropriately notify the quota engine. However, the above
# call begins a new transaction and we want to avoid that.
# Moreover, it can be safely assumed that any implicit resource
# creation via this local_api is always in response to an
# explicit resource creation request, and hence the above
# method will be invoked in the API layer.
if do_notify:
self._nova_notifier.send_network_change(action, {},
{resource: obj})
# REVISIT(rkukura): Do create.end notification?
if cfg.CONF.dhcp_agent_notification:
self._dhcp_agent_notifier.notify(
context, {resource: obj}, resource + '.create.end')
return obj
def _get_resources(self, plugin, context, resource_plural, filters=None):
with utils.clean_session(context.session):
obj_getter = getattr(plugin, 'get_' + resource_plural)
obj = obj_getter(context, filters)
return obj
def _get_resource(self, plugin, context, resource, resource_id):
with utils.clean_session(context.session):
obj_getter = getattr(plugin, 'get_' + resource)
obj = obj_getter(context, resource_id)
return obj
def _get_resources(self, plugin, context, resource, filters=None):
with utils.clean_session(context.session):
obj_getter = getattr(plugin, 'get_' + resource + 's')
obj = obj_getter(context, filters)
return obj
def _get_resources(self, plugin, context, resource, filters=None):
with utils.clean_session(context.session):
obj_getter = getattr(plugin, "get_" + resource + "s")
obj = obj_getter(context, filters)
return obj
def _get_resource(self, plugin, context, resource, resource_id):
with utils.clean_session(context.session):
obj_getter = getattr(plugin, 'get_' + resource)
obj = obj_getter(context, resource_id)
return obj