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# Copyright 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.
"""
Routes all the requests to the task manager.
"""
from oslo_log import log as logging
import oslo_messaging as messaging
from trove.common import cfg
from trove.common import exception
from trove.common.notification import NotificationCastWrapper
from trove.common.strategies.cluster import strategy
from trove.guestagent import models as agent_models
from trove import rpc
CONF = cfg.CONF
LOG = logging.getLogger(__name__)
class API(object):
"""API for interacting with the task manager.
API version history:
* 1.0 - Initial version.
When updating this API, also update API_LATEST_VERSION
"""
# API_LATEST_VERSION should bump the minor number each time
# a method signature is added or changed
API_LATEST_VERSION = '1.0'
# API_BASE_VERSION should only change on major version upgrade
API_BASE_VERSION = '1.0'
VERSION_ALIASES = {
'icehouse': '1.0',
'juno': '1.0',
'kilo': '1.0',
'liberty': '1.0',
'mitaka': '1.0',
'newton': '1.0',
'latest': API_LATEST_VERSION
}
def __init__(self, context):
self.context = context
super(API, self).__init__()
version_cap = self.VERSION_ALIASES.get(
CONF.upgrade_levels.taskmanager, CONF.upgrade_levels.taskmanager)
target = messaging.Target(topic=CONF.taskmanager_queue,
version=version_cap)
self.client = self.get_client(target, version_cap)
def _cast(self, method_name, version, **kwargs):
LOG.debug("Casting %s" % method_name)
with NotificationCastWrapper(self.context, 'taskmanager'):
cctxt = self.client.prepare(version=version)
cctxt.cast(self.context, method_name, **kwargs)
def get_client(self, target, version_cap, serializer=None):
return rpc.get_client(target,
version_cap=version_cap,
serializer=serializer)
def _transform_obj(self, obj_ref):
# Turn the object into a dictionary and remove the mgr
if "__dict__" in dir(obj_ref):
obj_dict = obj_ref.__dict__
# We assume manager contains a object due to the *clients
if obj_dict.get('manager'):
del obj_dict['manager']
return obj_dict
raise ValueError("Could not transform %s" % obj_ref)
def _delete_heartbeat(self, instance_id):
agent_heart_beat = agent_models.AgentHeartBeat()
try:
heartbeat = agent_heart_beat.find_by_instance_id(instance_id)
heartbeat.delete()
except exception.ModelNotFoundError as e:
LOG.error(e.message)
def resize_volume(self, new_size, instance_id):
LOG.debug("Making async call to resize volume for instance: %s"
% instance_id)
version = self.API_BASE_VERSION
self._cast("resize_volume", version=version,
new_size=new_size,
instance_id=instance_id)
def resize_flavor(self, instance_id, old_flavor, new_flavor):
LOG.debug("Making async call to resize flavor for instance: %s" %
instance_id)
version = self.API_BASE_VERSION
self._cast("resize_flavor", version=version,
instance_id=instance_id,
old_flavor=self._transform_obj(old_flavor),
new_flavor=self._transform_obj(new_flavor))
def reboot(self, instance_id):
LOG.debug("Making async call to reboot instance: %s" % instance_id)
version = self.API_BASE_VERSION
self._cast("reboot", version=version, instance_id=instance_id)
def restart(self, instance_id):
LOG.debug("Making async call to restart instance: %s" % instance_id)
version = self.API_BASE_VERSION
self._cast("restart", version=version, instance_id=instance_id)
def detach_replica(self, instance_id):
LOG.debug("Making async call to detach replica: %s" % instance_id)
version = self.API_BASE_VERSION
self._cast("detach_replica", version=version,
instance_id=instance_id)
def promote_to_replica_source(self, instance_id):
LOG.debug("Making async call to promote replica to source: %s" %
instance_id)
version = self.API_BASE_VERSION
self._cast("promote_to_replica_source", version=version,
instance_id=instance_id)
def eject_replica_source(self, instance_id):
LOG.debug("Making async call to eject replica source: %s" %
instance_id)
version = self.API_BASE_VERSION
self._cast("eject_replica_source", version=version,
instance_id=instance_id)
def migrate(self, instance_id, host):
LOG.debug("Making async call to migrate instance: %s" % instance_id)
version = self.API_BASE_VERSION
self._cast("migrate", version=version,
instance_id=instance_id, host=host)
def delete_instance(self, instance_id):
LOG.debug("Making async call to delete instance: %s" % instance_id)
version = self.API_BASE_VERSION
self._cast("delete_instance", version=version,
instance_id=instance_id)
def create_backup(self, backup_info, instance_id):
LOG.debug("Making async call to create a backup for instance: %s" %
instance_id)
version = self.API_BASE_VERSION
self._cast("create_backup", version=version,
backup_info=backup_info,
instance_id=instance_id)
def delete_backup(self, backup_id):
LOG.debug("Making async call to delete backup: %s" % backup_id)
version = self.API_BASE_VERSION
self._cast("delete_backup", version=version, backup_id=backup_id)
def create_instance(self, instance_id, name, flavor,
image_id, databases, users, datastore_manager,
packages, volume_size, backup_id=None,
availability_zone=None, root_password=None,
nics=None, overrides=None, slave_of_id=None,
cluster_config=None, volume_type=None,
modules=None, locality=None):
LOG.debug("Making async call to create instance %s " % instance_id)
version = self.API_BASE_VERSION
self._cast("create_instance", version=version,
instance_id=instance_id, name=name,
flavor=self._transform_obj(flavor),
image_id=image_id,
databases=databases,
users=users,
datastore_manager=datastore_manager,
packages=packages,
volume_size=volume_size,
backup_id=backup_id,
availability_zone=availability_zone,
root_password=root_password,
nics=nics,
overrides=overrides,
slave_of_id=slave_of_id,
cluster_config=cluster_config,
volume_type=volume_type,
modules=modules, locality=locality)
def create_cluster(self, cluster_id):
LOG.debug("Making async call to create cluster %s " % cluster_id)
version = self.API_BASE_VERSION
self._cast("create_cluster", version=version, cluster_id=cluster_id)
def grow_cluster(self, cluster_id, new_instance_ids):
LOG.debug("Making async call to grow cluster %s " % cluster_id)
version = self.API_BASE_VERSION
cctxt = self.client.prepare(version=version)
cctxt.cast(self.context, "grow_cluster",
cluster_id=cluster_id, new_instance_ids=new_instance_ids)
def shrink_cluster(self, cluster_id, instance_ids):
LOG.debug("Making async call to shrink cluster %s " % cluster_id)
version = self.API_BASE_VERSION
cctxt = self.client.prepare(version=version)
cctxt.cast(self.context, "shrink_cluster",
cluster_id=cluster_id, instance_ids=instance_ids)
def delete_cluster(self, cluster_id):
LOG.debug("Making async call to delete cluster %s " % cluster_id)
version = self.API_BASE_VERSION
self._cast("delete_cluster", version=version, cluster_id=cluster_id)
def upgrade(self, instance_id, datastore_version_id):
LOG.debug("Making async call to upgrade guest to datastore "
"version %s " % datastore_version_id)
version = self.API_BASE_VERSION
cctxt = self.client.prepare(version=version)
cctxt.cast(self.context, "upgrade", instance_id=instance_id,
datastore_version_id=datastore_version_id)
def load(context, manager=None):
if manager:
task_manager_api_class = (strategy.load_taskmanager_strategy(manager)
.task_manager_api_class)
else:
task_manager_api_class = API
return task_manager_api_class(context)
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