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File recipients
===============
Mailman can calculate the recipients for a message from a Sendmail-style
include file. This file must be called members.txt and it must live in the
list's data directory.
>>> handler = config.handlers['file-recipients']
>>> mlist = config.db.list_manager.create(u'_xtest@example.com')
Short circuiting
----------------
If the message's metadata already has recipients, this handler immediately
returns.
>>> msg = message_from_string("""\
... From: aperson@example.com
...
... A message.
... """)
>>> msgdata = {'recips': 7}
>>> handler.process(mlist, msg, msgdata)
>>> print msg.as_string()
From: aperson@example.com
<BLANKLINE>
A message.
<BLANKLINE>
>>> msgdata
{'recips': 7}
Missing file
------------
The include file must live inside the list's data directory, under the name
members.txt. If the file doesn't exist, the list of recipients will be
empty.
>>> import os
>>> file_path = os.path.join(mlist.data_path, 'members.txt')
>>> open(file_path)
Traceback (most recent call last):
...
IOError: [Errno ...]
No such file or directory: u'.../_xtest@example.com/members.txt'
>>> msgdata = {}
>>> handler.process(mlist, msg, msgdata)
>>> sorted(msgdata['recips'])
[]
Existing file
-------------
If the file exists, it contains a list of addresses, one per line. These
addresses are returned as the set of recipients.
>>> fp = open(file_path, 'w')
>>> try:
... print >> fp, 'bperson@example.com'
... print >> fp, 'cperson@example.com'
... print >> fp, 'dperson@example.com'
... print >> fp, 'eperson@example.com'
... print >> fp, 'fperson@example.com'
... print >> fp, 'gperson@example.com'
... finally:
... fp.close()
>>> msgdata = {}
>>> handler.process(mlist, msg, msgdata)
>>> sorted(msgdata['recips'])
['bperson@example.com', 'cperson@example.com', 'dperson@example.com',
'eperson@example.com', 'fperson@example.com', 'gperson@example.com']
However, if the sender of the original message is a member of the list and
their address is in the include file, the sender's address is /not/ included
in the recipients list.
>>> from mailman.interfaces.member import MemberRole
>>> address_1 = config.db.user_manager.create_address(
... u'cperson@example.com')
>>> address_1.subscribe(mlist, MemberRole.member)
<Member: cperson@example.com on _xtest@example.com as MemberRole.member>
>>> msg = message_from_string("""\
... From: cperson@example.com
...
... A message.
... """)
>>> msgdata = {}
>>> handler.process(mlist, msg, msgdata)
>>> sorted(msgdata['recips'])
['bperson@example.com', 'dperson@example.com',
'eperson@example.com', 'fperson@example.com', 'gperson@example.com']
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