Source code for heat.rpc.listener_client
#
# 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
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"""Client side of the heat worker RPC API."""
from oslo_config import cfg
import oslo_messaging as messaging
from heat.common import messaging as rpc_messaging
from heat.rpc import api as rpc_api
cfg.CONF.import_opt('engine_life_check_timeout', 'heat.common.config')
[docs]class EngineListenerClient(object):
"""Client side of the heat listener RPC API.
API version history::
1.0 - Initial version.
"""
BASE_RPC_API_VERSION = '1.0'
def __init__(self, engine_id):
_client = rpc_messaging.get_rpc_client(
topic=rpc_api.LISTENER_TOPIC,
version=self.BASE_RPC_API_VERSION,
server=engine_id)
self._client = _client.prepare(
timeout=cfg.CONF.engine_life_check_timeout)
[docs] def is_alive(self, ctxt):
try:
return self._client.call(ctxt, 'listening')
except messaging.MessagingTimeout:
return False