97 lines
2.7 KiB
Python
97 lines
2.7 KiB
Python
#!/usr/bin/env python
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# -*- encoding: utf-8 -*-
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#
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# Copyright © 2013 Julien Danjou <julien@danjou.info>
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import functools
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from oslo_config import cfg
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from oslo_log import log as logging
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import oslo_messaging as messaging
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from oslo_service import service
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from blazar import context
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LOG = logging.getLogger(__name__)
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class RPCClient(object):
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def __init__(self, target):
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super(RPCClient, self).__init__()
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self._client = messaging.RPCClient(
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target=target,
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transport=messaging.get_rpc_transport(cfg.CONF),
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)
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def cast(self, name, **kwargs):
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ctx = context.current()
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self._client.cast(ctx.to_dict(), name, **kwargs)
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def call(self, name, **kwargs):
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ctx = context.current()
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return self._client.call(ctx.to_dict(), name, **kwargs)
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class RPCServer(service.Service):
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def __init__(self, target):
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super(RPCServer, self).__init__()
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self._server = messaging.get_rpc_server(
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target=target,
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transport=messaging.get_rpc_transport(cfg.CONF),
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endpoints=[ContextEndpointHandler(self, target)],
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executor='eventlet',
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)
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def start(self):
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super(RPCServer, self).start()
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self.tg.add_thread(self._server.start)
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def stop(self):
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super(RPCServer, self).stop()
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self._server.stop()
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class ContextEndpointHandler(object):
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def __init__(self, endpoint, target):
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self.__endpoint = endpoint
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self.target = target
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def __getattr__(self, name):
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try:
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method = getattr(self.__endpoint, name)
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def run_method(__ctx, **kwargs):
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with context.BlazarContext(**__ctx):
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return method(**kwargs)
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return run_method
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except AttributeError:
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LOG.error("No %(method)s method found implemented in "
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"%(class)s class",
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{'method': name, 'class': self.__endpoint})
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def with_empty_context(func):
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@functools.wraps(func)
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def decorator(*args, **kwargs):
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with context.BlazarContext():
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return func(*args, **kwargs)
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return decorator
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def prepare_service(argv=[]):
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logging.setup(cfg.CONF, 'blazar')
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