add retry mechanism when sending email to new user
continuous-integration/drone/push Build is passing
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continuous-integration/drone/push Build is passing
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@ -1,3 +1,5 @@
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import smtplib
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import time
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import traceback
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from typing import Union, List
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@ -89,12 +91,25 @@ class AddMemberTransaction(AbstractTransaction):
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# The following operations can't/shouldn't be rolled back because the
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# user has already seen the email
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# sometimes Postfix says 'User unknown in local recipient table' if we try
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# to send an email to a user right after they were created
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max_tries = 3
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for i in range(max_tries):
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try:
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self.mail_srv.send_welcome_message_to(user, password)
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yield 'send_welcome_message'
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break
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except smtplib.SMTPRecipientsRefused:
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if i < max_tries - 1:
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logger.warning('SMTP recipient refused, sleeping and trying again')
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time.sleep(3)
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continue
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else:
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yield 'failed_to_send_welcome_message: recipient refused too many times'
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except Exception as err:
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logger.warning('send_welcome_message failed:\n' + traceback.format_exc())
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yield 'failed_to_send_welcome_message: ' + str(err)
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break
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# don't subscribe club reps to csc-general
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if self.terms:
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