#! /bin/sh

# -------------------------------------------------------------------------- #
# Copyright 2002-2010, OpenNebula Project Leads (OpenNebula.org)             #
#                                                                            #
# Licensed under the Apache License, Version 2.0 (the "License"); you may    #
# not use this file except in compliance with the License. You may obtain    #
# a copy of the License at                                                   #
#                                                                            #
# http://www.apache.org/licenses/LICENSE-2.0                                 #
#                                                                            #
# Unless required by applicable law or agreed to in writing, software        #
# distributed under the License is distributed on an "AS IS" BASIS,          #
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   #
# See the License for the specific language governing permissions and        #
# limitations under the License.                                             #
#--------------------------------------------------------------------------- #

if [ -z "$ONE_LOCATION" ]; then 
    OCCI_PID=/var/run/one/occi-server.pid
    OCCI_SERVER=/usr/lib/one/ruby/cloud/occi/occi-server.rb
    OCCI_LOCK_FILE=/var/lock/one/.occi.lock
    OCCI_LOG=/var/log/one/occi-server.log   
    OCCI_ETC=/etc/one/occi-server.conf
else
    OCCI_PID=$ONE_LOCATION/var/occi-server.pid
    OCCI_SERVER=$ONE_LOCATION/lib/ruby/cloud/occi/occi-server.rb
    OCCI_LOCK_FILE=$ONE_LOCATION/var/.occi.lock
    OCCI_LOG=$ONE_LOCATION/var/occi-server.log
    OCCI_ETC=$ONE_LOCATION/etc/occi-server.conf
fi 

setup()
{
    eval `grep ^IMAGE_DIR= $OCCI_ETC `
    export TMPDIR=$IMAGE_DIR/tmp
    mkdir -p $TMPDIR
	
	if [ -f $OCCI_LOCK_FILE ]; then
		if [ -f  $OCCI_PID ]; then
			ONEPID=`cat $OCCI_PID`
			ps $OCCI_PID > /dev/null 2>&1
			if [ $? -eq 0 ]; then
				echo "OCCI Server is still running (PID:$OCCI_PID). Please try 'occi-server stop' first."
				exit 1 
			fi
		fi
		echo "Stale .lock detected. Erasing it."
		rm $LOCK_FILE
	fi
}

start()
{
	if [ ! -x "$OCCI_SERVER" ]; then
		echo "Can not find $OCCI_SERVER."
		exit 1		
	fi
		
	# Start the occi-server daemon
	ruby $OCCI_SERVER > $OCCI_LOG 2>&1 & 
	
	LASTRC=$?
	LASTPID=$!

	if [ $LASTRC -ne 0 ]; then
		echo "Error executing $OCCI_SERVER"
		exit 1			
	else
		echo $LASTPID > $OCCI_PID
	fi
	
	sleep 1
	ps $LASTPID > /dev/null 2>&1
	
	if [ $? -ne 0 ]; then
		echo "Error executing $OCCI_SERVER."
		exit 1
	fi
	
	echo "occi-server started"
}

#
# Function that stops the daemon/service
#
stop()
{
	if [ ! -f $OCCI_PID ]; then
		echo "Couldn't find occi-server process pid."
		exit 1
	fi

	# Kill the occi-server daemon

	kill -INT `cat $OCCI_PID` > /dev/null 2>&1

	# Remove pid files
	rm -f $OCCI_PID > /dev/null 2>&1

	echo "occi-server stopped"
}


case "$1" in
  start)
	setup
	start
	;;
  stop)
	stop
	;;
  *)
	echo "Usage: occi-server {start|stop}" >&2
	exit 3
	;;
esac


