def request(self, event: EventEnvelope, timeout_seconds: float):
timeout_value = self.util.get_float(timeout_seconds)
if timeout_value <= 0:
raise ValueError(
'timeout value in seconds must be positive number')
if not isinstance(event, EventEnvelope):
raise ValueError('event object must be an EventEnvelope')
# restore distributed tracing info from current thread
trace_info = self.get_trace()
if trace_info:
if trace_info.get_route() is not None and event.get_from() is None:
event.set_from(trace_info.get_route())
if trace_info.get_id() is not None and trace_info.get_path(
) is not None:
event.set_trace(trace_info.get_id(), trace_info.get_path())
# emulate RPC
inbox = Inbox(self)
temp_route = inbox.get_route()
inbox_queue = inbox.get_queue()
try:
route = event.get_to()
event.set_reply_to(temp_route, me=True)
if route in self._function_queues:
self._loop.call_soon_threadsafe(self._send, route,
event.to_map())
else:
if self._cloud.is_connected():
self._cloud.send_payload({
'type': 'event',
'event': event.to_map()
})
else:
raise ValueError(f'route {route} not found')
# wait until response event is delivered to the inbox
return inbox_queue.get(True, timeout_value)
except Empty:
raise TimeoutError(
f'Route {event.get_to()} timeout for {round(timeout_value, 3)} seconds'
)
finally:
inbox.close()
def send_event(self, event: EventEnvelope, broadcast=False) -> None:
if not isinstance(event, EventEnvelope):
raise ValueError("event object must be an EventEnvelope class")
# restore distributed tracing info from current thread
trace_info = self.get_trace()
if trace_info:
if trace_info.get_route() is not None and event.get_from() is None:
event.set_from(trace_info.get_route())
if trace_info.get_id() is not None and trace_info.get_path(
) is not None:
event.set_trace(trace_info.get_id(), trace_info.get_path())
# regulate rate for best performance
self._seq += 1
self._throttle.regulate_rate(self._seq)
route = event.get_to()
if broadcast:
event.set_broadcast(True)
reply_to = event.get_reply_to()
if reply_to:
target = reply_to[2:] if reply_to.startswith('->') else reply_to
if route == target:
raise ValueError("route and reply_to must not be the same")
if route in self._function_queues:
if event.is_broadcast() and self._cloud.is_connected():
self._cloud.send_payload({
'type': 'event',
'event': event.to_map()
})
else:
self._loop.call_soon_threadsafe(self._send, route,
event.to_map())
else:
if self._cloud.is_connected():
self._cloud.send_payload({
'type': 'event',
'event': event.to_map()
})
else:
raise ValueError("route " + route + " not found")