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82 lines
3.3 KiB
Python
82 lines
3.3 KiB
Python
import logging
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import time
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from datetime import timedelta
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from typing import Any
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from django.conf import settings
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from django.core.management.base import BaseCommand
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from django.utils.timezone import now as timezone_now
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from zerver.lib.actions import build_message_send_dict, do_send_messages
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from zerver.lib.logging_util import log_to_file
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from zerver.lib.management import sleep_forever
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from zerver.lib.message import SendMessageRequest
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from zerver.models import Message, ScheduledMessage, get_user_by_delivery_email
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## Setup ##
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logger = logging.getLogger(__name__)
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log_to_file(logger, settings.SCHEDULED_MESSAGE_DELIVERER_LOG_PATH)
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class Command(BaseCommand):
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help = """Deliver scheduled messages from the ScheduledMessage table.
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Run this command under supervisor.
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This management command is run via supervisor. Do not run on multiple
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machines, as you may encounter multiple sends in a specific race
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condition. (Alternatively, you can set `EMAIL_DELIVERER_DISABLED=True`
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on all but one machine to make the command have no effect.)
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Usage: ./manage.py deliver_scheduled_messages
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"""
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def construct_message(self, scheduled_message: ScheduledMessage) -> SendMessageRequest:
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message = Message()
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original_sender = scheduled_message.sender
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message.content = scheduled_message.content
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message.recipient = scheduled_message.recipient
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message.subject = scheduled_message.subject
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message.date_sent = timezone_now()
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message.sending_client = scheduled_message.sending_client
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delivery_type = scheduled_message.delivery_type
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if delivery_type == ScheduledMessage.SEND_LATER:
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message.sender = original_sender
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elif delivery_type == ScheduledMessage.REMIND:
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message.sender = get_user_by_delivery_email(
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settings.NOTIFICATION_BOT, original_sender.realm
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)
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message_dict = {
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'message': message,
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'stream': scheduled_message.stream,
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'realm': scheduled_message.realm,
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}
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return build_message_send_dict(message_dict)
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def handle(self, *args: Any, **options: Any) -> None:
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try:
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if settings.EMAIL_DELIVERER_DISABLED:
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# Here doing a check and sleeping indefinitely on this setting might
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# not sound right. Actually we do this check to avoid running this
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# process on every server that might be in service to a realm. See
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# the comment in zproject/default_settings.py file about renaming this
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# setting.
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sleep_forever()
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while True:
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messages_to_deliver = ScheduledMessage.objects.filter(
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scheduled_timestamp__lte=timezone_now(), delivered=False
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)
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for message in messages_to_deliver:
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do_send_messages([self.construct_message(message)])
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message.delivered = True
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message.save(update_fields=['delivered'])
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cur_time = timezone_now()
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time_next_min = (cur_time + timedelta(minutes=1)).replace(second=0, microsecond=0)
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sleep_time = (time_next_min - cur_time).total_seconds()
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time.sleep(sleep_time)
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except KeyboardInterrupt:
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pass
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