def run(self):
log.info('Starting REST server')
# Handle SIGTERM the same way as SIGINT.
def stop_server(signum, frame):
log.info('REST server shutdown')
sys.exit(signal.SIGTERM)
signal.signal(signal.SIGTERM, stop_server)
try:
make_server().serve_forever()
except KeyboardInterrupt:
log.info('REST server interrupted')
sys.exit(signal.SIGINT)
except select.error as (errcode, message):
if errcode == errno.EINTR:
log.info('REST server exiting')
sys.exit(errno.EINTR)
raise
def __init__(self, name, slice=None):
"""See `IRunner`."""
super().__init__(name, slice)
# Both the REST server and the signal handlers must run in the main
# thread; the former because of SQLite requirements (objects created
# in one thread cannot be shared with the other threads), and the
# latter because of Python's signal handling semantics.
#
# Unfortunately, we cannot issue a TCPServer shutdown in the main
# thread, because that will cause a deadlock. Yay. So what we do is
# to use the signal handler to notify a shutdown thread that the
# shutdown should happen. That thread will wake up and stop the main
# server.
self._server = make_server()
self._event = threading.Event()
def stopper(event, server): # noqa
event.wait()
server.shutdown()
self._thread = threading.Thread(
target=stopper, args=(self._event, self._server))
self._thread.start()
def __init__(self, name, slice=None):
"""See `IRunner`."""
super().__init__(name, slice)
# Both the REST server and the signal handlers must run in the main
# thread; the former because of SQLite requirements (objects created
# in one thread cannot be shared with the other threads), and the
# latter because of Python's signal handling semantics.
#
# Unfortunately, we cannot issue a TCPServer shutdown in the main
# thread, because that will cause a deadlock. Yay. So what we do is
# to use the signal handler to notify a shutdown thread that the
# shutdown should happen. That thread will wake up and stop the main
# server.
self._server = make_server()
self._event = threading.Event()
def stopper(event, server): # noqa: E306
event.wait()
server.shutdown()
self._thread = threading.Thread(
target=stopper, args=(self._event, self._server))
self._thread.start()
