Command line message injection

You can inject a message directly into a queue directory via the command line.

>>> command = cli('mailman.commands.cli_inject.inject')

It’s easy to find out which queues are available.

>>> command('mailman inject --show')
Available queues:
    archive
    bad
    bounces
    command
    digest
    in
    nntp
    out
    pipeline
    retry
    shunt
    virgin

Usually, the text of the message to inject is in a file.

>>> from tempfile import NamedTemporaryFile
>>> filename = cleanups.enter_context(NamedTemporaryFile()).name
>>> with open(filename, 'w', encoding='utf-8') as fp:
...     print("""\
... From: aperson@example.com
... To: ant@example.com
... Subject: testing
... Message-ID: <aardvark>
...
... This is a test message.
... """, file=fp)

Create a mailing list to inject this message into.

>>> mlist = create_list('ant@example.com')
>>> transaction.commit()

The mailing list’s incoming queue is empty.

>>> from mailman.testing.helpers import get_queue_messages
>>> get_queue_messages('in')
[]

By default, messages are injected into the incoming queue.

>>> command('mailman inject --filename ' + filename + ' ant@example.com')
>>> items = get_queue_messages('in')
>>> len(items)
1
>>> print(items[0].msg.as_string())
From: aperson@example.com
To: ant@example.com
Subject: testing
Message-ID: ...
Date: ...

This is a test message.

And the message is destined for ant@example.com.

>>> dump_msgdata(items[0].msgdata)
_parsemsg    : False
listid       : ant.example.com
original_size: 252
version      : 3

But a different queue can be specified on the command line.

>>> command('mailman inject --queue virgin --filename ' +
...         filename + ' ant@example.com')

>>> get_queue_messages('in')
[]
>>> items = get_queue_messages('virgin')
>>> len(items)
1
>>> print(items[0].msg.as_string())
From: aperson@example.com
To: ant@example.com
Subject: testing
Message-ID: ...
Date: ...

This is a test message.



>>> dump_msgdata(items[0].msgdata)
_parsemsg    : False
listid       : ant.example.com
original_size: 252
version      : 3

Standard input

The message text can also be provided on standard input.

>>> stdin = """\
... From: bperson@example.com
... To: ant@example.com
... Subject: another test
... Message-ID: <badger>
...
... This is another test message.
... """

>>> command('mailman inject --filename - ant@example.com', input=stdin)
>>> items = get_queue_messages('in')
>>> len(items)
1
>>> print(items[0].msg.as_string())
From: bperson@example.com
To: ant@example.com
Subject: another test
Message-ID: ...
Date: ...

This is another test message.



>>> dump_msgdata(items[0].msgdata)
_parsemsg    : False
listid       : ant.example.com
original_size: 260
version      : 3

Metadata

Additional metadata keys can be provided on the command line. These key/value pairs get added to the message metadata dictionary when the message is injected.

>>> command('mailman inject --filename ' + filename +
...         ' -m foo=one -m bar=two ant@example.com')

>>> items = get_queue_messages('in')
>>> dump_msgdata(items[0].msgdata)
_parsemsg    : False
bar          : two
foo          : one
listid       : ant.example.com
original_size: 252
version      : 3