gpsdatad

#!/bin/bash
# Copyright 2014 stefano.cudini@gmail.com
# 	https://opengeo.tech
# Nodejs Forever Demonizer with a low privilege user, official code:
# 	https://gist.github.com/stefanocudini/6116527
# Requirements:
# 	https://github.com/nodejitsu/forever
#
### BEGIN INIT INFO
# Provides:             gpsdata_server
# Required-Start:       $syslog $remote_fs
# Required-Stop:        $syslog $remote_fs
# Should-Start:         $local_fs
# Should-Stop:          $local_fs
# Default-Start:        2 3 4 5
# Default-Stop:         0 1 6
# Short-Description:    Forever Demonizer with a low privilege user 
# Description:          Forever Demonizer with a low privilege user 
### END INIT INFO
#
. /lib/lsb/init-functions

NODE_BIN_DIR=/opt/node/bin
NODE_PATH=/opt/node/lib/node_modules
PATH=$NODE_BIN_DIR:$PATH
export NODE_PATH=$NODE_PATH

APPDIR=/home/agrsys/gpsdata_server
APPFILE=server.http.js
CONF=$APPDIR/conf.json
#NODE_OPTS="--always-compact"

DAEMON_NAME=gpsdata_server
DAEMON_USER=agrsys

FOREVER_PID="${APPDIR}/${APPFILE}_forever.pid"
LOGERR=/var/log/$DAEMON_NAME/server.err
LOGOUT=/dev/null

DAEMON_PID=/var/run/$DAEMON_NAME.pid
DAEMON_LOG=/dev/null
DAEMON_BIN=$(readlink -f $NODE_BIN_DIR/forever)
DAEMON_OPTS="--pidFile $FOREVER_PID --sourceDir $APPDIR -a -l $DAEMON_LOG "\
"-c 'node --expose-gc --always-compact' -e $LOGERR -o $LOGOUT --minUptime 5000 --spinSleepTime 2000 start $APPFILE $CONF"

#TODO ottimizzazione utilizzo ram:
#node --expose-gc --always-compact

FOREVER_DIR=$(bash <<< "echo ~$DAEMON_USER")"/.forever"

if [ ! -d "$FOREVER_DIR" ]; then
    echo "make dir: $FOREVER_DIR"
    mkdir -p "$FOREVER_DIR"
    chown $DAEMON_USER:$DAEMON_USER "$FOREVER_DIR"
    chmod 0775 "$FOREVER_DIR"
fi

if [ ! -d "/var/log/$DAEMON_NAME" ]; then
    echo "make dir: /var/log/$DAEMON_NAME"    
    mkdir -p "/var/log/$DAEMON_NAME"
    chown $DAEMON_USER:$DAEMON_USER "/var/log/$DAEMON_NAME"
    chmod 0750 "/var/log/$DAEMON_NAME"
fi

start() {
	echo "Starting $DAEMON_NAME as user: $DAEMON_USER"
    #--background
    # start-stop-daemon --start --pidfile $DAEMON_PID \
    #     --make-pidfile --chuid $DAEMON_USER \
    #     --exec $DAEMON_BIN -- $DAEMON_OPTS
    su - $DAEMON_USER -c "$DAEMON_BIN $DAEMON_OPTS"
    echo $! > $DAEMON_PID
    
    RETVAL=$?
}

stop() {
    if [ -f $DAEMON_PID ]; then
		echo "Shutting down $DAEMON_NAME"
        #--background
		# start-stop-daemon --stop --pidfile $DAEMON_PID \
		# 		    --retry 300 \
		# 		    --user $DAEMON_USER \
        #           --exec $DAEMON_BIN -- "stop $APPFILE"
        su - $DAEMON_USER -c "$DAEMON_BIN stop $APPFILE"
        rm -f $DAEMON_PID $FOREVER_PID

        date +"[%d-%m-%Y %H:%M:%S] server stop" >> /var/log/$DAEMON_NAME/server.log
        
        RETVAL=$?
    else
		echo "$DAEMON_NAME is not running."
		RETVAL=0
    fi
}

restart() {
    echo "Restarting $DAEMON_NAME"
    stop
    start
    #TODO forever restart
}

status() {
    echo "Status for $DAEMON_NAME:"
    su - $DAEMON_USER -c "$DAEMON_BIN list"
    RETVAL=$?
}

case "$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    status)
        status
        ;;
    restart)
        restart
        ;;
    *)
        echo "Usage: {start|stop|status|restart}"
        exit 1
        ;;
esac
exit $RETVAL