def webserver_serve(app, listener_socket, logfile):
"""Serve app on listener_socket provided.
This sets up process context, including signal handlers, etc,
and runs until signalled.
"""
# create a WSGIServer instance using the listener socket created
server = WSGIServer(listener_socket, app, log=logfile)
server.set_spawn(Pool()) # Make WSGIServer manage worker greenlets
def signal_handler():
# logger.debug('webserver_serve.signal_handler: Worker caught signal. Shutting down.')
app.stop_serving(timeout=HALT_TIMEOUT)
server.stop()
gevent.signal(signal.SIGUSR1, signal_handler)
gevent.signal(signal.SIGINT, signal_handler)
gevent.signal(signal.SIGHUP, signal_handler)
gevent.signal(signal.SIGTERM, signal_handler)
on_initialise.fire()
gevent.spawn_later(1, on_start.fire)
# serve requests
try:
server.serve_forever(stop_timeout=5)
finally:
server.close()
logger.debug('webserver_serve: finished serving')
