92 lines
2.8 KiB
Bash
92 lines
2.8 KiB
Bash
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#!/bin/bash
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#
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# This script is supposed to be called periodically.
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# It goes through the last few lines of a logfile and counts some events.
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# The events are then reported to something.
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#
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# Debugging option
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#set -x
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# Go into appropriate directory
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cd `dirname $0`
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# Load configuration
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. ./settings.sh
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### COUNTERS ###
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log_lines=0
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mail_sent=0
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mail_deferred=0
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mail_bounced_total=0
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mail_bounced_spam=0
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mail_reputation=0
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### First time setup (if required)
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if [ ! -f "$DBFILE" ]; then
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# Get initial log position
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new_log_position=$(wc -l $LOGFILE | cut -d ' ' -f 1)
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# Write initial log position
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echo $new_log_position > $DBFILE
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# Create rrd file
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rrdtool create $RRDFILE \
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--start `date +%s` \
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--step 60 \
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DS:log_lines:GAUGE:60:0:U \
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DS:mail_sent:GAUGE:60:0:U \
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DS:mail_deferred:GAUGE:60:0:U \
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DS:mail_bounced_total:GAUGE:60:0:U \
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DS:mail_bounced_spam:GAUGE:60:0:U \
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DS:mail_reputation:GAUGE:60:0:U \
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RRA:AVERAGE:0.5:1:1440 \
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RRA:AVERAGE:0.5:15:1344 \
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RRA:AVERAGE:0.5:30:720 \
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RRA:AVERAGE:0.5:720:730 \
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RRA:MAX:0.5:1:1440 \
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RRA:MAX:0.5:15:1344 \
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RRA:MAX:0.5:30:720 \
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RRA:MAX:0.5:720:730 \
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# Quick fix so rrdtool does not complain about updating too soon
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sleep 1
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fi
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### Action ###
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# Get old log position
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old_log_position=$(cat $DBFILE)
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# Get new log position
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new_log_position=$(wc -l $LOGFILE | cut -d ' ' -f 1)
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# Write new log position
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echo $new_log_position > $DBFILE
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# Get date for new log position
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db_last_modified=$(stat --terse $DBFILE | cut -d ' ' -f 13)
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# Make sure we do not have a log rotation going on
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# This is visible when old_log_position > new_log_position.
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if [ $new_log_position -lt $old_log_position ]; then
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# In this case, we set old_log_position to 0
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old_log_position=0
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fi
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# Calculate number of log lines
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log_lines=`expr $new_log_position - $old_log_position`
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# Get lines and analyse them a bit, do the counting
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mail_sent=$(sed -n "$old_log_position","$new_log_position"p $LOGFILE | grep 'status=sent' | grep -v 'relay=127.0.0.1' | wc -l)
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mail_deferred=$(sed -n "$old_log_position","$new_log_position"p $LOGFILE | grep 'status=deferred' | wc -l)
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mail_bounced_total=$(sed -n "$old_log_position","$new_log_position"p $LOGFILE | grep 'status=bounced' | wc -l)
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mail_bounced_spam=$(sed -n "$old_log_position","$new_log_position"p $LOGFILE | grep 'status=bounced' | grep -i 'spam' | wc -l)
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mail_reputation=$(sed -n "$old_log_position","$new_log_position"p $LOGFILE | grep -i 'poor reputation' | wc -l)
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# Report counter results
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rrdtool update $RRDFILE \
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-t log_lines:mail_sent:mail_deferred:mail_bounced_total:mail_bounced_spam:mail_reputation \
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$db_last_modified:$log_lines:$mail_sent:$mail_deferred:$mail_bounced_total:$mail_bounced_spam:$mail_reputation
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# That's it.
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exit 0
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