Source code for heat.rpc.worker_client

# Copyright (c) 2014 Hewlett-Packard Development Company, L.P.
# 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,
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Client side of the heat worker RPC API."""

from heat.common import messaging
from heat.rpc import worker_api

[docs]class WorkerClient(object): """Client side of the heat worker RPC API. API version history:: 1.0 - Initial version. 1.1 - Added check_resource. 1.2 - Add adopt data argument to check_resource. 1.3 - Added cancel_check_resource API. 1.4 - Add converge argument to check_resource """ BASE_RPC_API_VERSION = '1.0' def __init__(self): self._client = messaging.get_rpc_client( topic=worker_api.TOPIC, version=self.BASE_RPC_API_VERSION)
[docs] @staticmethod def make_msg(method, **kwargs): return method, kwargs
[docs] def cast(self, ctxt, msg, version=None): method, kwargs = msg if version is not None: client = self._client.prepare(version=version) else: client = self._client client.cast(ctxt, method, **kwargs)
[docs] def check_resource(self, ctxt, resource_id, current_traversal, data, is_update, adopt_stack_data, converge=False): self.cast(ctxt, self.make_msg( 'check_resource', resource_id=resource_id, current_traversal=current_traversal, data=data, is_update=is_update, adopt_stack_data=adopt_stack_data, converge=converge ), version='1.4')
[docs] def cancel_check_resource(self, ctxt, stack_id, engine_id): """Send check-resource cancel message. Sends a cancel message to given heat engine worker. """ _client = messaging.get_rpc_client( topic=worker_api.TOPIC, version=self.BASE_RPC_API_VERSION, server=engine_id) method, kwargs = self.make_msg('cancel_check_resource', stack_id=stack_id) cl = _client.prepare(version='1.3') cl.cast(ctxt, method, **kwargs)
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