49 lines
1.4 KiB
Python
49 lines
1.4 KiB
Python
#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Client side of the heat worker RPC API."""
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from oslo_config import cfg
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import oslo_messaging as messaging
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from heat.common import messaging as rpc_messaging
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from heat.rpc import api as rpc_api
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cfg.CONF.import_opt('engine_life_check_timeout', 'heat.common.config')
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class EngineListenerClient(object):
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"""Client side of the heat listener RPC API.
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API version history::
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1.0 - Initial version.
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"""
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BASE_RPC_API_VERSION = '1.0'
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def __init__(self, engine_id):
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_client = rpc_messaging.get_rpc_client(
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topic=rpc_api.LISTENER_TOPIC,
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version=self.BASE_RPC_API_VERSION,
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server=engine_id)
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self._client = _client.prepare(
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timeout=cfg.CONF.engine_life_check_timeout)
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def is_alive(self, ctxt):
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try:
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return self._client.call(ctxt, 'listening')
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except messaging.MessagingTimeout:
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return False
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