#!/bin/bash
#
#       /etc/init.d/zabbix_java_gateway
#
# Starts the zabbix_Java_gatway daemon
#
# chkconfig: - 95 5
# description: Zabbix Monitoring JavaGateway

# Author: pengyao <https://github.com/pengyao>
# Date: 2013-05-01

BASE="/usr/local/zabbix_java_gateway"
CONF="/etc/zabbix/zabbix_java_gateway.conf"
ZABBIX_JAVA_DIR="${BASE}/sbin/zabbix_java"

JAVA=${JAVA_HOME}/bin/java

RETVAL=0
PROG="Zabbix Java Gateway"

###Functions
get_options(){
    config=$1
    option=$2 
    default_value=$3
    result=$(sed -n "s/^${option}=//p" ${config}|tail -n 1|sed -r "s/[\"\']//g")
    if [ -z "$result" ];then
        result="${default_value}"
    fi
}

get_options ${CONF} LISTEN_IP "0.0.0.0"
LISTEN_IP="${result}"
get_options ${CONF} LISTEN_PORT "10052"
LISTEN_PORT="${result}"
get_options ${CONF} PID_FILE "/tmp/zabbix_java.pid"
PID_FILE="${result}"
get_options ${CONF} START_POLLERS "5"
START_POLLERS="${result}"


BOOTUP="color"
RES_COL=60
MOVE_TO_COL="echo -en \\033[${RES_COL}G"
SETCOLOR_SUCCESS="echo -en \\033[1;32m"
SETCOLOR_FAILURE="echo -en \\033[1;31m"
SETCOLOR_NORMAL="echo -en \\033[0;39m"

echo_success() {
    echo -en "\t\t\t\t\t"
    [ "$BOOTUP" = "color" ] && $MOVE_TO_COL
    echo -n "["
    [ "$BOOTUP" = "color" ] && $SETCOLOR_SUCCESS
    echo -n $"  OK  "
    [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
    echo -n "]"
    echo -e "\r"
    return 0
}

echo_failure() {
	echo -en "\t\t\t\t\t"
	[ "$BOOTUP" = "color" ] && $MOVE_TO_COL
	echo -n "["
	[ "$BOOTUP" = "color" ] && $SETCOLOR_FAILURE
	echo -n $"FAILED"
	[ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
	echo -n "]"
	echo -e "\r"
	return 1
}

status(){
	if [ -n "$PID_FILE" -a -e "$PID_FILE" ] && [ -d "/proc/`cat ${PID_FILE}`" ]; then
	   echo -e "${PROG} is already running"
	   RETVAL=0
	else
	   echo -e "${PROG} is not running"
	   RETVAL=1
	fi
	
	return $RETVAL
}

start(){
	JAVA_OPTIONS="-server -Dlogback.configurationFile=logback-console.xml"
	ZABBIX_OPTIONS="-Dzabbix.listenIP=$LISTEN_IP -Dzabbix.listenPort=$LISTEN_PORT -Dzabbix.pidFile=$PID_FILE -Dzabbix.startPollers=$START_POLLERS"
	
	CLASSPATH="${ZABBIX_JAVA_DIR}/lib"
	for jar in ${ZABBIX_JAVA_DIR}/{lib,bin}/*.jar; do
	        if [[ $jar != *junit* ]]; then
	                CLASSPATH="$CLASSPATH:$jar"
	        fi
	done
	
	COMMAND_LINE="$JAVA $JAVA_OPTIONS -classpath $CLASSPATH $ZABBIX_OPTIONS com.zabbix.gateway.JavaGateway"
	
	echo -n "Starting: ${PROG}"
	$COMMAND_LINE > /dev/null 2>&1 &
	RETVAL=$?    
	
	echo $! > $PID_FILE
	
	if [ $RETVAL -eq 0 ];then
	    echo_success
	else
	    echo_failure
	fi
	return $RETVAL

}


stop(){
	echo -n "Stopping: ${PROG}"
	kill `cat $PID_FILE`

	RETVAL=$?
	if [ $RETVAL -eq 0 ];then
	   echo_success
	else
	   echo_failure
	   exit $RETVAL
    fi
	return $RETVAL
}

case "$1" in
    start)
       status >/dev/null 2>&1
       [ $? = 0 ] || start
       ;;
    stop)
       status >/dev/null 2>&1
       [ $? = 0 ] && stop
       ;;
    restart)
       status >/dev/null 2>&1
       [ $? = 0 ] && stop && sleep 5
       start
       ;;
    status)
       status
       ;;
    *)
       echo -e "Usage: $0 {start|stop|restart|status}"
       exit 2
esac
exit $?