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@r3nya r3nya/node-app.sh
Last active Aug 29, 2015

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#!/bin/sh
##
## Redhat / Linux / LSB
##
# chkconfig: 345 80 20
# description: Startup script for Express / Node.js application with the \
## forever module.
##
## A modification of https://gist.github.com/1339289
##
## This is free software; you may redistribute it and/or modify
## it under the terms of the GNU General Public License as
## published by the Free Software Foundation; either version 2,
## or (at your option) any later version.
##
## This 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.
##
################################################################################
################################################################################
## ##
# APPLICATION section #
## Edit the variables below for your installation ##
################################################################################
################################################################################
DESC="app"
NAME="app.js"
DIR="/var/www"
APP=${DIR}/${DESC}/${NAME}
LOCKFILE=`basename $0 .sh`
export NODE_ENV=${NODE_ENV:="production"}
################################################################################
################################################################################
## ##
# PATHs section #
## ##
################################################################################
################################################################################
export PATH=$HOME/local/bin:${PATH:=}
export MANPATH=$HOME/local/man:${MANPATH:=}
export LD_LIBRARY_PATH=$HOME/local/lib:${LD_LIBRARY_PATH:=}
################################################################################
################################################################################
## ##
# FOREVER section #
## ##
################################################################################
################################################################################
running() {
forever list 2>/dev/null | grep ${APP} 2>&1 >/dev/null
return $?
}
start_server() {
forever start ${APP} 2>&1 >/dev/null
return $?
}
stop_server() {
forever stop ${APP} 2>&1 >/dev/null
return $?
}
################################################################################
################################################################################
## ##
# GENERIC section #
## ##
################################################################################
################################################################################
# Source function library.
. /etc/init.d/functions
DIETIME=10 # Time to wait for the server to die, in seconds
# If this value is set too low you might not
# let some servers to die gracefully and
# 'restart' will not work
STARTTIME=2 # Time to wait for the server to start, in seconds
# If this value is set each time the server is
# started (on start or restart) the script will
# stall to try to determine if it is running
# If it is not set and the server takes time
# to setup a pid file the log message might
# be a false positive (says it did not start
# when it actually did)
# Console logging.
log() {
local STRING mode
STRING=$1
arg2=$2
mode="${arg2:=success}"
echo -n "$STRING "
if [ "${RHGB_STARTED:-}" != "" -a -w /etc/rhgb/temp/rhgb-console ]; then
echo -n "$STRING " > /etc/rhgb/temp/rhgb-console
fi
if [ "$mode" = "success" ]; then
success $"$STRING"
else
failure $"$STRING"
fi
echo
if [ "${RHGB_STARTED:-}" != "" -a -w /etc/rhgb/temp/rhgb-console ]; then
if [ "$mode" = "success" ]; then
echo_success > /etc/rhgb/temp/rhgb-console
else
echo_failure > /etc/rhgb/temp/rhgb-console
[ -x /usr/bin/rhgb-client ] && /usr/bin/rhgb-client --details=yes
fi
echo > /etc/rhgb/temp/rhgb-console
fi
}
case "$1" in
start)
# Check if it's running first
if running ; then
log "$DESC $NAME already running"
exit 0
fi
action "Starting $DESC $NAME" start_server
RETVAL=$?
if [ $RETVAL -eq 0 ]; then
# NOTE: Some servers might die some time after they start,
# this code will detect this issue if STARTTIME is set
# to a reasonable value
[ -n "$STARTTIME" ] && sleep $STARTTIME # Wait some time
if running ; then
# It's ok, the server started and is running
log "$DESC $NAME started"
touch /var/lock/subsys/$LOCKFILE
RETVAL=0
else
# It is not running after we did start
log "$DESC $NAME died on startup" "failure"
RETVAL=1
fi
fi
exit $RETVAL
;;
stop)
if running ; then
# Only stop the server if we see it running
action "Stopping $DESC $NAME" stop_server
RETVAL=$?
[ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/$LOCKFILE
else
# If it's not running don't do anything
log "$DESC $NAME not running"
RETVAL=0
fi
exit $RETVAL
;;
restart)
stop
RETVAL=$?
if [ $RETVAL -eq 0 ]; then
# Wait some sensible amount, some server need this
[ -n "$DIETIME" ] && sleep $DIETIME
start
RETVAL=$?
fi
exit $RETVAL
;;
status)
if running ; then
log "$DESC $NAME running"
else
log "$DESC $NAME not running"
fi
;;
*)
echo "Usage: ${0} {start|stop|status|restart}"
exit 1
;;
esac
exit 0
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