5b1d181491
- set up util function to use Amazon SES for sending calendar sync emails. - remove old sailthru code which we originally implemented for this functionality - include ADR on our decision to use SES instead of Sailthru.
80 lines
2.8 KiB
Python
80 lines
2.8 KiB
Python
import logging
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from email.mime.application import MIMEApplication
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from email.mime.multipart import MIMEMultipart
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from email.mime.text import MIMEText
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from django.conf import settings
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from django.utils.html import format_html
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from django.utils.translation import ugettext_lazy as _
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import os
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import boto3
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logger = logging.getLogger(__name__)
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def calendar_sync_initial_email_content(course_name):
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subject = _('Stay on Track')
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body_text = _('Sticking to a schedule is the best way to ensure that you successfully complete your self-paced '
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'course. This schedule of assignment due dates for {course} will help you stay on track!'
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).format(course=course_name)
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body = format_html('<div>{text}</div>', text=body_text)
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return subject, body
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def calendar_sync_update_email_content(course_name):
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subject = _('Updates for Your {course} Schedule').format(course=course_name)
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body_text = _('Your assignment due dates for {course} were recently adjusted. Update your calendar with your new '
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'schedule to ensure that you stay on track!').format(course=course_name)
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body = format_html('<div>{text}</div>', text=body_text)
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return subject, body
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def prepare_attachments(attachment_data):
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"""
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Helper function to create a list contain file attachment objects
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for use with MIMEMultipart
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Returns a list of MIMEApplication objects
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"""
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attachments = []
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for filename, data in attachment_data.items():
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msg_attachment = MIMEApplication(data)
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msg_attachment.add_header(
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'Content-Disposition',
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'attachment',
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filename=os.path.basename(filename)
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)
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msg_attachment.set_type('text/calendar')
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attachments.append(msg_attachment)
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return attachments
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def send_email_with_attachment(to_emails, attachment_data, course_name, is_update=False):
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# connect to SES
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client = boto3.client('ses', region_name=settings.AWS_SES_REGION_NAME)
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subject, body = (calendar_sync_update_email_content(course_name) if is_update else
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calendar_sync_initial_email_content(course_name))
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# build email body as html
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msg_body = MIMEText(body, 'html')
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attachments = prepare_attachments(attachment_data)
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# iterate over each email in the list to send emails independently
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for email in to_emails:
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msg = MIMEMultipart()
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msg['Subject'] = str(subject)
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msg['From'] = settings.BULK_EMAIL_DEFAULT_FROM_EMAIL
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msg['To'] = email
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# attach the message body and attachment
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msg.attach(msg_body)
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for msg_attachment in attachments:
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msg.attach(msg_attachment)
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# send the email
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result = client.send_raw_email(Source=msg['From'], Destinations=[email], RawMessage={'Data': msg.as_string()})
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logger.debug(result)
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