mirror of https://github.com/zulip/zulip.git
97 lines
3.7 KiB
Python
Executable File
97 lines
3.7 KiB
Python
Executable File
#!/usr/bin/env python
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"""
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Deliver email messages that have been queued by various things
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(at this time invitation reminders and day1/day2 followup emails).
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This management command is run via supervisor. Do not run on multiple machines,
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as you may encounter multiple sends in a specific race condition.
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"""
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from __future__ import absolute_import
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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.core.mail import EmailMultiAlternatives, get_connection
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from django.utils.html import format_html
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from zerver.models import ScheduledJob
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from zerver.lib.context_managers import lockfile
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import time
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import logging
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from datetime import datetime
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from ujson import loads
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## Setup ##
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log_format = "%(asctime)s: %(message)s"
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logging.basicConfig(format=log_format)
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formatter = logging.Formatter(log_format)
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file_handler = logging.FileHandler(settings.EMAIL_DELIVERER_LOG_PATH)
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file_handler.setFormatter(formatter)
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logger = logging.getLogger(__name__)
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logger.setLevel(logging.DEBUG)
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logger.addHandler(file_handler)
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def get_recipient_as_string(dictionary):
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if not dictionary["recipient_name"]:
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return dictionary["recipient_email"]
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return format_html(u"\"{0}\" <{1}>", dictionary["recipient_name"], dictionary["recipient_email"])
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def get_sender_as_string(dictionary):
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if dictionary["sender_email"]:
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return dictionary["sender_email"] if not dictionary["sender_name"] else format_html(u"\"{0}\" <{1}>",
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dictionary["sender_name"],
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dictionary["sender_email"])
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return settings.DEFAULT_FROM_EMAIL
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def send_email_job(job):
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data = loads(job.data)
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fields = {'subject': data["email_subject"],
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'body': data["email_text"],
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'from_email': get_sender_as_string(data),
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'to': [get_recipient_as_string(data)]}
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msg = EmailMultiAlternatives(**fields)
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if data["email_html"]:
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msg.attach_alternative(data["email_html"], "text/html")
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return msg.send() > 0
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class Command(BaseCommand):
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help = """Deliver emails queued by various parts of Zulip
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(either for immediate sending or sending at a specified time).
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Run this command under supervisor. We use Mandrill for zulip.com; this is for SMTP email delivery.
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Usage: python manage.py deliver_email
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"""
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def handle(self, *args, **options):
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# TODO: this only acquires a lock on the system, not on the DB:
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# be careful not to run this on multiple systems.
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# In the meantime, we have an option to prevent this job from
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# running on >1 machine
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if settings.EMAIL_DELIVERER_DISABLED:
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return
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with lockfile("/tmp/zulip_email_deliver.lockfile"):
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while True:
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# make sure to use utcnow, otherwise it gets confused when you set the time with utcnow(),
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# and select with now()
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email_jobs_to_deliver = ScheduledJob.objects.filter(type=ScheduledJob.EMAIL,
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scheduled_timestamp__lte=datetime.utcnow())
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if email_jobs_to_deliver:
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for job in email_jobs_to_deliver:
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if not send_email_job(job):
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logger.warn("No exception raised, but %r sent as 0 bytes" % (job,))
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else:
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job.delete()
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time.sleep(10)
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else:
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# Less load on the db during times of activity, and more responsiveness when the load is low
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time.sleep(2)
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