init script to daemonize digdag server.

digdag.sh

#!/bin/bash
# digdag daemon
# chkconfig: 345 20 80
# description: digdag daemon
# processname: digdag

# Credit: https://werxltd.com/wp/2012/01/05/simple-init-d-script-template/

source /home/user_name/.bashrc
source /home/user_name/.bash_profile

CMD="/home/user_name/bin/digdag server"

DIGDAG_DIR="/path/to/repo"
LOG_DIR="${APP_DIR}/logs"
OPTS="-c ${DIGDAG_DIR}/digdag.properties -A ${LOG_DIR}/accesslogs -O ${LOG_DIR}/tasklogs -L ${LOG_DIR}/server.log"

NAME=digdag
PIDFILE="${APP_DIR}/tmp/pids/$NAME.pid"

case "$1" in
start)
	printf "%-50s" "Starting $NAME..."
	cd $DIGDAG_DIR
	PID=`$CMD $OPTS > /dev/null 2>&1 & echo $!`
        if [ -z $PID ]; then
            printf "%s\n" "Fail"
        else
            echo $PID > $PIDFILE
            printf "%s\n" "Ok"
        fi
;;
status)
        printf "%-50s" "Checking $NAME..."
        if [ -f $PIDFILE ]; then
            PID=`cat $PIDFILE`
            if [ -z "`ps axf | grep ${PID} | grep -v grep`" ]; then
                printf "%s\n" "Process dead but pidfile exists"
            else
                echo "Running"
            fi
        else
            printf "%s\n" "Service not running"
        fi
;;
stop)
        printf "%-50s" "Stopping $NAME"
            PID=`cat $PIDFILE`
            cd $DIGDAG_DIR
        if [ -f $PIDFILE ]; then
            kill -HUP $PID
            printf "%s\n" "Ok"
            rm -f $PIDFILE
        else
            printf "%s\n" "pidfile not found"
        fi
;;

restart)
        $0 stop
        $0 start
;;

*)
        echo "Usage: $0 {status|start|stop|restart}"
        exit 1
esac