#!/bin/bash
#
# Copyright 2014,2015,2016,2017,2018,2019,2020,2021 Security Onion Solutions, LLC
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

THEGREP=$(ps -ef | grep $0 | grep -v $$ | grep -v grep)

if [ ! "$THEGREP" ]; then

    TSFILE=/var/log/telegraf/laststenodrop.log
    if [ -f "$TSFILE" ]; then
        LASTTS=$(cat $TSFILE)
    else
        LASTTS=0
    fi

    # Get the data
    LOGLINE=$(tac /var/log/stenographer/stenographer.log | grep -m1 drop)
    CURRENTTS=$(echo $LOGLINE | awk '{print $1}')

    if [[ "$CURRENTTS" != "$LASTTS" ]]; then
      DROP=$(echo $LOGLINE | awk '{print $14}' | awk -F "=" '{print $2}')
      echo $CURRENTTS > $TSFILE
    else
      DROP=0
    fi

    echo "stenodrop drop=$DROP"
else
    exit 0
fi