def serve_rpc():
plugin = manager.NeutronManager.get_plugin()
# If 0 < rpc_workers then start_rpc_listener would be called in a
# subprocess and we cannot simply catch the NotImplementedError. It is
# simpler to check this up front by testing whether the plugin supports
# multiple RPC workers.
if not plugin.rpc_workers_supported():
LOG.debug(_("Active plugin doesn't implement start_rpc_listener"))
if 0 < cfg.CONF.rpc_workers:
msg = _("'rpc_workers = %d' ignored because start_rpc_listener "
"is not implemented.")
LOG.error(msg, cfg.CONF.rpc_workers)
raise NotImplementedError
try:
rpc = RpcWorker(plugin)
if cfg.CONF.rpc_workers < 1:
rpc.start()
return rpc
else:
launcher = ProcessLauncher(wait_interval=1.0)
launcher.launch_service(rpc, workers=cfg.CONF.rpc_workers)
return launcher
except Exception:
with excutils.save_and_reraise_exception():
LOG.exception(
_('Unrecoverable error: please check log '
'for details.'))
def start(self, application, port, host='0.0.0.0', workers=0):
"""Run a WSGI server with the given application."""
self._host = host
self._port = port
backlog = CONF.backlog
self._socket = self._get_socket(self._host,
self._port,
backlog=backlog)
if workers < 1:
# For the case where only one process is required.
self._server = self.pool.spawn(self._run, application,
self._socket)
else:
self._launcher = ProcessLauncher()
self._server = WorkerService(self, application)
self._launcher.launch_service(self._server, workers=workers)
def start(self, application, port, host='0.0.0.0', workers=0):
"""Run a WSGI server with the given application."""
self._host = host
self._port = port
backlog = CONF.backlog
self._socket = self._get_socket(self._host,
self._port,
backlog=backlog)
if workers < 1:
# For the case where only one process is required.
self._server = self.pool.spawn(self._run, application,
self._socket)
else:
# Minimize the cost of checking for child exit by extending the
# wait interval past the default of 0.01s.
self._launcher = ProcessLauncher(wait_interval=1.0)
self._server = WorkerService(self, application)
self._launcher.launch_service(self._server, workers=workers)
