baseimage-tutorial-framework/tfw/components/frontend/message_queue_handler/message_queue_handler.py

50 lines
1.4 KiB
Python

from time import sleep
from queue import Queue
from threading import Thread
class MessageQueueHandler:
keys = ['message.queue']
type_id = 'ControlEventHandler'
avg_word_len = 5
def __init__(self, wpm):
self.connector = None
self.wpm = wpm
self._queue = Queue()
self._thread = Thread(target=self._dispatch_messages)
def _dispatch_messages(self):
for message in iter(self._queue.get, None):
message['typing'] = not self._queue.empty()
self.connector.send_message(message)
self._sleep(self._get_sleep_time(message))
def _get_sleep_time(self, message):
words_per_min = message['wpm'] if 'wpm' in message else self.wpm
chars_per_min = self.avg_word_len * words_per_min / 60
return len(message['message']) / chars_per_min
def _sleep(self, seconds): # pylint: disable=no-self-use
sleep(seconds)
def handle_event(self, message, _):
for unpacked in self._generate_messages_from_queue(message):
self._queue.put(unpacked)
@staticmethod
def _generate_messages_from_queue(queue_message):
for message in queue_message['messages']:
yield {
'key': 'message.send',
**message
}
def start(self):
self._thread.start()
def cleanup(self):
self._queue.queue.clear()
self._queue.put(None)
self._thread.join()