An init.d script for Apache Stratos

stratos-init.d.sh

#!/bin/sh
# ------------------------------------------------------------------
#  Licensed to the Apache Software Foundation (ASF) under one
#  or more contributor license agreements.  See the NOTICE file
#  distributed with this work for additional information
#  regarding copyright ownership.  The ASF licenses this file
#  to you 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.
# ------------------------------------------------------------------
# Description: Use this script for creating an init.d service for Stratos.
# Author:      imesh@apache.org
# ------------------------------------------------------------------
### BEGIN INIT INFO
# Provides:          stratos
# Required-Start:    $local_fs $remote_fs $network $syslog $named
# Required-Stop:     $local_fs $remote_fs $network $syslog $named
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# X-Interactive:     true
# Short-Description: Start/stop stratos server
### END INIT INFO

USER="vagrant"
PRODUCT_NAME="stratos"
JAVA_HOME="/opt/jdk1.7.0_60"
PRODUCT_HOME="/opt/apache_stratos_4.1.0_SNAPSHOT"
PID_FILE="${PRODUCT_HOME}/wso2carbon.pid"
CMD="${PRODUCT_HOME}/bin/stratos.sh"

# LSB exit codes:
# ftp://ftp.nomadlinux.com/nomad-2/dist/heartbeat-1.2.5/include/clplumbing/lsb_exitcodes.h

LSB_EXIT_OK=0
LSB_EXIT_GENERIC=1
LSB_EXIT_EINVAL=2
LSB_EXIT_ENOTSUPPORTED=3
LSB_EXIT_EPERM=4
LSB_EXIT_NOTINSTALLED=5
LSB_EXIT_NOTCONFIGED=6
LSB_EXIT_NOTRUNNING=7

is_service_running() {
	if [ -e ${PID_FILE} ]; then
		PID=`cat ${PID_FILE}`
	    if  ps -p $PID >&- ; then
			# service is running
			return 0
		else
			# service is stopped
			return 1
	    fi
	else
		# pid file was not found, may be server was not started before
		return 1
	fi
}

# Status the service
status() {
	is_service_running
	service_status=$?
		
	if [ "${service_status}" -eq 0 ]; then
		echo "${PRODUCT_NAME} service is running"
		return ${LSB_EXIT_OK}
	elif [ "${service_status}" -eq 1 ]; then
		echo "$PRODUCT_NAME service is stopped"
		return ${LSB_EXIT_OK}
	else 
		echo "$PRODUCT_NAME service status is unknown"
		return ${LSB_EXIT_GENERIC}
    fi
}

# Start the service
start() {
	if is_service_running; then
		echo "${PRODUCT_NAME} service is already running"
		return ${LSB_EXIT_OK}
	fi
	
	echo "starting ${PRODUCT_NAME} service..."  
	su - ${USER} -c "export JAVA_HOME=${JAVA_HOME}; ${CMD} start"
	
	is_service_running
	service_status=$?
	while [ "$service_status" -ne "0" ]
	do
		sleep 1;
		is_service_running
		service_status=$?
	done
	
	echo "${PRODUCT_NAME} service started"
	return ${LSB_EXIT_OK}
}

# Restart the service
restart() {
	echo "restarting ${PRODUCT_NAME} service..."
	su - ${USER} -c "export JAVA_HOME=${JAVA_HOME}; ${CMD} restart"
    echo "${PRODUCT_NAME} service restarted"
	return ${LSB_EXIT_OK}
}

# Stop the service
stop() {
	if ! is_service_running; then
		echo "${PRODUCT_NAME} service is already stopped"
		return ${LSB_EXIT_OK}
	fi
	
	echo "stopping ${PRODUCT_NAME} service..."
	su - ${USER} -c "export JAVA_HOME=${JAVA_HOME}; ${CMD} stop"
	
	is_service_running
	service_status=$?
	while [ "$service_status" -eq "0" ]
	do
		sleep 1;
		is_service_running
		service_status=$?
	done
	
	echo "${PRODUCT_NAME} service stopped"
	return ${LSB_EXIT_OK}
}
### main logic ###
case "$1" in
start)
    start
    ;;
stop|graceful-stop)
    stop
    ;;
status)
    status
    ;;
restart|reload|force-reload)
    restart
    ;;
*)
   echo $"usage: $0 {start|stop|graceful-stop|restart|reload|force-reload|status}"
   exit 1
esac
exit $?