init.d script for starting multiple minion workers (Mojolicious)

rebus-minion.sh

#!/bin/bash

### BEGIN INIT INFO
# Provides:          rebus-minion
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Provides Minion Workers for rebus:list jobs
# Description:       This script with start/stop minion worker 
#                    processes for each enabled rebus:list instance
### END INIT INFO

# Author: Martin Renvoize <[email protected]>

# Add local perl to $PATH
PATH=/home/rebus/.plenv/versions/5.20.2/bin/perl5.20.2:$PATH

DESC="Minion worker services"
DAEMON=/home/rebus/rebus-list/script/rebus
RUNDIR=/var/run/rebus-minion

test -x $DAEMON || exit 0

set -e

FILES=(/etc/rebus/list/*.conf)

if [ -r "${FILES[0]}" ]
then
    CONFIGS=()
    for FILE in "${FILES[@]}"
    do
        # remove prefix
        NAME=${FILE#/etc/rebus/list}
        # remove suffix
        NAME=${NAME%.conf}

        # check for optional second parameter
        if [ "$#" -ne 2 ]
        then
            # add to config array
            CONFIGS+=($NAME)
        elif [ "$2" == "$NAME" ]
        then
            # just one minion
            CONFIGS=($NAME)
            break
        fi
    done

    if [ ${#CONFIGS[@]} == 0 ];
    then
        echo "Config missing for: $2" >&2
        exit 1
    fi
else
    echo "No configs found" >&2
    exit 1
fi

CONFIG_NUM=${#CONFIGS[@]}
for ((i=0; i < $CONFIG_NUM; i++))
do
    NAME=${CONFIGS[${i}]}
    PIDFILE1="${RUNDIR}/${NAME}-default.pid"
    PIDFILE2="${RUNDIR}/${NAME}-buffer.pid"

    case "$1" in
        start)
            echo -n "Starting $DESC: "
            mkdir -p $RUNDIR
            touch "$PIDFILE1"
            touch "$PIDFILE2"
            chown rebus:rebus "$RUNDIR" "$PIDFILE1" "$PIDFILE2"
            chmod 755 $RUNDIR

            if [ -n "$ULIMIT" ]
            then
                ulimit -n "$ULIMIT"
            fi

            if start-stop-daemon --start --quiet --background --umask 007 --pidfile "$PIDFILE1" --chuid rebus:rebus --exec /usr/bin/env MOJO_CONFIG="/etc/rebus/list/${NAME}.conf" $DAEMON -- minion worker -m production -j 4 -q default
            then
                echo "$NAME-default"
            else
                echo "failed"
            fi

            if start-stop-daemon --start --quiet --background --umask 007 --pidfile "$PIDFILE2" --chuid rebus:rebus --exec /usr/bin/env MOJO_CONFIG="/etc/rebus/list/${NAME}.conf" $DAEMON -- minion worker -m production -j 1 -q buffer
            then
                echo "$NAME-buffer"
            else
                echo "failed"
            fi
            ;;

        stop)
            echo -n "Stopping $DESC: "
            if start-stop-daemon --stop --retry forever/TERM/1 --quiet --oknodo "$PIDFILE1" --exec $DAEMON
            then
                echo "$NAME-default"
            else
                echo "failed"
            fi
            rm -f "$PIDFILE1"

            if start-stop-daemon --stop --retry forever/TERM/1 --quiet --oknodo "$PIDFILE2" --exec $DAEMON
            then
                echo "$NAME-buffer"
            else
                echo "failed"
            fi
            rm -f "$PIDFILE2"
            sleep 1
            ;;

        restart|force-reload)
            ARGS=($@)
            CONFIG=${ARGS[@]:1}
            ${0} stop $CONFIG
            ${0} start $CONFIG
            exit 0;
            ;;

        status)
            echo -n "$DESC ($NAME) is "
            if start-stop-daemon --stop --quiet --signal 0 --pidfile "$PIDFILE1" --exec $DAEMON
            then
                echo "default worker running"
            else
                echo "default worker not running"
            fi
            
            if start-stop-daemon --stop --quiet --signal 0 --pidfile "$PIDFILE2" --exec $DAEMON
            then
                echo "buffer worker running"
            else
                echo "buffer worker not running"
            fi

            ;;

        *)
            N=/etc/init.d/$NAME
            echo "Usage: $N {start|stop|restart|force-reload|status" >&2
            exit 1
            ;;
    esac
done

exit 0