Source code for heat.rpc.listener_client

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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