Simple threaded stats aggregator for Postfix. When running as a syslog destination, it can be used to get realtime cumulative stats.

Usage: postfix_stats.py [options] file1 file2 ... fileN

Primary use is as a syslog destination

syslog-ng

destination df_postfix_stats { program("/usr/bin/python /usr/bin/postfix_stats.py -d -c 4 -"); };
filter f_postfix { program("^postfix/"); };
log {
    source(src);
    filter(f_mail);
    filter(f_postfix);
    destination(df_postfix_stats);
};

syslog

mail.*  |/usr/bin/python /usr/bin/postfix_stats.py -d -c 4 -

rsyslog

Create postfix_stats.sh that calls postfix_stats.py with the arguments you wish to use

$ModLoad omprog
$actionomprogbinary /usr/bin/postfix_stats.sh
:syslogtag, startswith, "postfix" :omprog:;RSYSLOG_TraditionalFileFormat

tail

If you don't want to wire it up to syslog but need current stats use this.

tail -qf /var/log/mail.* | /usr/bin/postfix_stats.py -d

To grab the current cumulative stats as a json dump

echo stats | nc 127.0.0.1 7777

Or human readable

echo prettystats | nc 127.0.0.1 7777

Pass it a list of log files or stdin and it will aggregate them and dump a json dictionary

postfix_stats.py -c 12 -l disqus.net,notifications,true postfix.log postfix.log.1 postfix.log.2