93 lines
3.3 KiB
Python
93 lines
3.3 KiB
Python
# Copyright (c) 2013-2014 Rackspace, Inc.
|
|
#
|
|
# 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.
|
|
|
|
"""
|
|
Server-side (i.e. worker side) classes and logic.
|
|
"""
|
|
from oslo.config import cfg
|
|
|
|
from barbican.common import utils
|
|
from barbican.openstack.common import service
|
|
from barbican.tasks import resources
|
|
from barbican import queue
|
|
|
|
|
|
LOG = utils.getLogger(__name__)
|
|
|
|
CONF = cfg.CONF
|
|
|
|
|
|
class Tasks(object):
|
|
"""Tasks that can be invoked asynchronously in Barbican.
|
|
|
|
Only place task methods and implementations on this class, as they can be
|
|
called directly from the client side for non-asynchronous standalone
|
|
single-node operation.
|
|
|
|
The TaskServer class below extends this class to implement a worker-side
|
|
server utilizing Oslo messaging's RPC server. This RPC server can invoke
|
|
methods on itself, which include the methods in this class.
|
|
"""
|
|
def process_order(self, context, order_id, keystone_id):
|
|
"""Process Order."""
|
|
LOG.debug('Order id is {0}'.format(order_id))
|
|
task = resources.BeginOrder()
|
|
try:
|
|
task.process(order_id, keystone_id)
|
|
except Exception:
|
|
LOG.exception(">>>>> Task exception seen, details reported "
|
|
"on the Orders entity.")
|
|
|
|
def process_verification(self, context, verification_id, keystone_id):
|
|
"""Process Verification."""
|
|
LOG.debug('Verification id is {0}'.format(verification_id))
|
|
task = resources.PerformVerification()
|
|
try:
|
|
task.process(verification_id, keystone_id)
|
|
except Exception:
|
|
LOG.exception(">>>>> Task exception seen, details reported "
|
|
"on the the Verification entity.")
|
|
|
|
|
|
class TaskServer(Tasks, service.Service):
|
|
"""Server to process asynchronous tasking from Barbican API nodes.
|
|
|
|
This server is an Oslo service that exposes task methods that can
|
|
be invoked from the Barbican API nodes. It delegates to an Oslo
|
|
RPC messaging server to invoke methods asynchronously on this class.
|
|
Since this class also extends the Tasks class above, its task-based
|
|
methods are hence available to the RPC messaging server.
|
|
"""
|
|
def __init__(self):
|
|
super(TaskServer, self).__init__()
|
|
|
|
# This property must be defined for the 'endpoints' specified below,
|
|
# as the oslo.messaging RPC server will ask for it.
|
|
self.target = queue.get_target()
|
|
|
|
# Create an oslo RPC server, that calls back on to this class
|
|
# instance to invoke tasks, such as 'process_order()' on the
|
|
# extended Tasks class above.
|
|
self._server = queue.get_server(target=self.target,
|
|
endpoints=[self])
|
|
|
|
def start(self):
|
|
self._server.start()
|
|
super(TaskServer, self).start()
|
|
|
|
def stop(self):
|
|
super(TaskServer, self).stop()
|
|
self._server.stop()
|