gcp

#!/bin/bash
#
# gcp          Starts GCP CUPS Connector daemnon
# description: Google cloudprint is a service for sharing printers \
#              among computers through the internet and LAN.
#

### BEGIN INIT INFO
# Provides: cloudprint
# Required-Start: $cups $network $local_fs $syslog
# Required-Stop: $local_fs $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Starts the cloudprint connector daemon
# Description: Google CUPS Connector shares printers locally
#              and with the Google Cloud Print webservice.
### END INIT INFO

####################################################################
# GCP Cups Connector service service for /etc/init.d/gcp
#
# Run GCP CUPS Connector on boot as a service
# Author: Gustavo Arnosti Neves
# System: Centos 6.5
#
# Google CUPS Connector:
#     https://github.com/google/cups-connector
#
# This script: 
#     https://gist.github.com/tavinus/0b60e453a05deb6b2118
#
# Cron checker script: 
#     https://gist.github.com/tavinus/90382c20f8ac923796a8
#
# Instructions:
#     You should follow the linked guide for the installation of
#     Google CUPS Connector, including creating a config file.
#     You should adjust the file locations if you used different
#     ones. You should also adjust the user/group if you used
#     something other than gcp.
#
# Install GCP CUPS Connector:
#     https://github.com/google/cups-connector/wiki/Installing-on-Raspberry-Pi-Raspbian-Jessie
#
# Run on boot:
# $ sudo cp gcp /etc/init.d/gcp && sudo chmod 755 /etc/init.d/gcp # copy file
# $ sudo chkconfig --level 2345 gcp on                            # turn on
#
####################################################################

GCP_USER="gcp"
CP_BIN='/opt/gcp_cups_connector/gcp-cups-connector'
PIDFILE='/var/run/gcp_cups_connector_pid'
CREDENTIALS_FILE='/etc/gcp_cups_connector/gcp-cups-connector.config.json'
LOGFILE='/tmp/gcp_cups_connector.log'

print_results() {
	if [[ $1 -eq 0 ]]; then
		echo '[  Ok  ]'
	else
		echo '[ Fail ]'
	fi
}

case $1 in
	start)
		if [[ -f $PIDFILE ]]; then
			echo "[  --  ] GCP CUPS Connector is already running..."
		else
			echo -ne '[  --  ] Starting GCP CUPS Connector...\r'
			sudo -H -u "$GCP_USER" $CP_BIN -config-filename $CREDENTIALS_FILE > $LOGFILE & echo $! > $PIDFILE
			print_results $?
		fi
	;;
	stop)
		if [[ -f $PIDFILE ]]; then
			echo -ne '[  --  ] Stopping GCP CUPS Connector...\r'
			kill $(cat "$PIDFILE")
			wait ${!} 2>/dev/null
			print_results $?
			rm -f "$PIDFILE" 2>/dev/null
		else
			echo "[  --  ] Nothing to be stopped..."
		fi
	;;
	status)
		if [[ -f $PIDFILE ]]; then
			echo 'GCP CUPS Connector is running with PID: '$(cat "$PIDFILE")
		else
			echo 'GCP CUPS Connector is NOT running...'
		fi
	;;
	restart)
		$0 stop
		sleep 1
		$0 start
	;;
	*)
		echo "Usage: gcp {start|stop|status|restart}"
	;;
esac