111 lines
4.1 KiB
Python
111 lines
4.1 KiB
Python
# Society Self-Service
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# Copyright © 2018-2019 Yingtong Li (RunasSudo)
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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import boto3
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from botocore.exceptions import ClientError
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import premailer
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from django.core.management.base import BaseCommand, CommandError
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from django.conf import settings
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from django.template import loader
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from django.urls import reverse
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from django.utils import timezone
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import ssmembership.models
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import sspromotions.models
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import sspromotions.utils
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import logging
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import time
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import urllib.parse
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def send_aws_email(client, email, subject, content_html, content_txt):
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def send_mail(**kwargs):
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for i in range(0, 10):
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try:
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client.send_email(**kwargs)
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return
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except ClientError as e:
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if e.response['Error']['Code'] == 'Throttling' and e.response['Error']['Message'] == 'Maximum sending rate exceeded.':
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wait_time = max(10*(2**i), 5000)
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self.stdout.write(self.style.NOTICE('Reached maximum sending rate, waiting {} ms'.format(wait_time)))
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time.sleep(wait_time/1000)
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else:
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raise e
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raise Exception('Reached maximum number of retries')
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send_mail(
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Destination={
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'ToAddresses': [email],
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},
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Message={
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'Body': {
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'Html': {
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'Charset': 'utf-8',
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'Data': content_html,
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},
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'Text': {
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'Charset': 'utf-8',
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'Data': content_txt,
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},
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},
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'Subject': {
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'Charset': 'utf-8',
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'Data': subject,
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},
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},
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Source='{} <{}>'.format(settings.ORG_NAME, settings.AWS_SENDER_EMAIL),
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)
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class Command(BaseCommand):
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help = 'Send bulletin emails'
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def add_arguments(self, parser):
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parser.add_argument('ids', nargs='*', type=int, help='Members with ID numbers equal to these values will be emailed (default all)')
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parser.add_argument('--render', action='store_true', help='Render to stdout instead of sending emails')
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def handle(self, *args, **options):
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template_html = loader.get_template('sspromotions/email/bulletin.html')
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template_txt = loader.get_template('sspromotions/email/bulletin.txt')
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members = ssmembership.models.Member.objects.all()
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if len(options['ids']) > 0:
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members = [member for member in members if member.id in options['ids']]
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else:
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raise Exception('Must provide IDs')
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client = boto3.client('ses', aws_access_key_id=settings.AWS_KEY_ID, aws_secret_access_key=settings.AWS_SECRET, region_name=settings.AWS_REGION)
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title = '{} News: {}'.format(settings.ORG_NAME, timezone.localtime(timezone.now()).strftime('%d %B %Y'))
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calbegin, calend, bulbegin, bulend = sspromotions.utils.bulletin_dates(timezone.localtime(timezone.now()))
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events = list(sspromotions.utils.get_calendar_events(calbegin, calend))
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for member in members:
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if sspromotions.models.BulletinSubscription.is_member_subscribed(member):
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template_args = sspromotions.utils.bulletin_args(member, sspromotions.models.Group.get_member_groups(member), events, bulbegin, bulend)
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content_html = premailer.Premailer(template_html.render(template_args), cssutils_logging_level=logging.ERROR, strip_important=False).transform()
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content_txt = template_txt.render(template_args)
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if options['render']:
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self.stdout.write('Content-Type: multipart/alternative; boundary=boundary\n\n--boundary\nContent-Type: text/html; charset=utf-8\n\n' + content_html + '\n--boundary\nContent-Type: text/plain; charset=utf-8\n\n' + content_txt + '\n--boundary')
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else:
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self.stdout.write('Emailing {} at {}'.format(member.id, member.email))
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send_aws_email(client, member.email, title, content_html, content_txt)
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