#!/bin/sh
#######################################################################
#Script Name: queueprotect
#Version: 1.5
#Description: HB queue protection script
#Last Modify Date: 01062021
#Author:Brent Dacus
#Email:brent[at]thedacus[dot]net
#######################################################################
#                       Variables                                     #
#######################################################################
#Put your paths in here
queue="/home/admin/domains/delainhosting.com/public_html/clients/queue.php"
pidfile="/home/admin/hb_templates_c/hostbillqueue.pid"
stampfile="/tmp/hbqtime.txt"
lockdir="/tmp/hbqueue.lock"
#######################################################################
#                       Main                                          #
#######################################################################
#set your php comand here.  this starts the queue.
#if the queue is already running it know and moves on.
startqueue() {
    /usr/local/bin/php -q $queue
}

#this checks to see on the master hb queue is up and running.
piddefunct() {
    pgrep -f 'hostbillqueue: master' >/dev/null 2>&1
    if [ $? -eq 1 ]; then
        echo "Master process missing."
        pkill -sigterm -f hostbillqueue
        rm -f $pidfile
    fi
}
#checks for a pid number in the pid file.
#if hb finds a file with or without a number it assumes all is well.
pidfilemissing() {
    echo "Removing lock file."
    pkill -sigterm -f hostbillqueue
    rm -rf $lockdir
}

#checks for a pid number in the pid file.
#if hb finds a file with or without a number it assumes all is well.
pidfileempty() {
    echo "Removing empty file."
    pkill -sigterm -f hostbillqueue
    rm -f $pidfile
}

#checkes pid file is present and has a running master pid.
#all is good..
pidfilenotempty() {
    pid=$(cat $pidfile)
    psck=$(ps -o pid= -p "$pid") >/dev/null 2>&1
    if [ "$psck" -gt 0 ]; then
        echo "Hostbill master queue process already running."
    fi
}

#checks running master pid is more than 24 hours old.
#kills and restarts.
pidfileage() {
    touch -t "$(date -v-1d +%y%m%d0100.00)" $stampfile
    if find "$pidfile" -prune -newer "$stampfile" | grep -q '^'; then
        echo "Process file is newer than Timestamp file"

    else
        echo "Process is more than 24 hours old. Need new process."
        pkill -sigterm -f hostbillqueue
        rm -f $pidfile
    fi
}

if [ -f $pidfile ]; then
    if [ -s $pidfile ]; then
        echo "PID file present and not empty."
        pidfilenotempty
        pidfileage
        piddefunct
    else
        echo "PID missing from file..  bad ju ju."
        pidfileempty
    fi
else
    echo "PID file missing."
    pidfilemissing
fi
if mkdir -p "$lockdir" >/dev/null 2>&1; then
    echo >&2 "Have acquired lock."
    # remove lockdir when the script finishes, or when it receives a signal
    trap 'rm -rf "$lockdir"' 0 # remove directory when script finishes
    startqueue
else
    echo >&2 "Cannot acquire lock, lock exsits."
    exit 0
fi
exit