#!/bin/sh

# set log path(default)
# WORKING_DIRECOTYR=`pwd`
# LOG_PATH="${WORKING_DIRECOTYR}/temp_imxtxnd.log"

# $1: log filename, $2: log limit size
func_check_log_file()
{
	LOG_CHK_SIZE=1048576
	if [ -n "$2" ];then
		LOG_CHK_SIZE=$2
	fi

	if [ -f "$1" ];then

		LOG_SIZE=`ls -la $1 | awk -F' ' '{print $5}'`
		if [ $? -eq 0 ]; then

			if [ ${LOG_SIZE} -gt ${LOG_CHK_SIZE} ]; then
			  if [ -f $1.bak ];then
				rm -rf $1.bak
			  fi

			  mv $1 $1.bak
#				rm -rf $1
#				echo "log size is over. remove log file.[size:${LOG_SIZE},file:$1]"
			fi

		fi

	fi

}

# $1: log filename $2: log string
func_log()
{
	CUR_DATE=`date +%Y%m%d.%H%M%S`

	# nfs 환경에서 한개의 위치를 공유하여 서로 다른 서버에서 
	# 접근 중인 경우 imxtxnd가 그냥 종료되버린다.

	if [ -n "$1" ];
	then
		func_check_log_file "$1" 10240
		echo "${CUR_DATE}[${RUN_MODE}] $2" >> "$1"
	else
		echo "${CUR_DATE}[${RUN_MODE}] $2"
	fi
}

FUNC_RESULT=""

# $1: pid, $2: check process name
func_is_running_process()
{
	if [ -z "$1" ];
	then
		func_log "" "pid is wrong."
		FUNC_RESULT="false"
		return
	fi

	PROC_NAME=`ps -p $1 -o args= | awk -F' ' '{print $1}'`

	func_log "" "EXEC_PID[$1],PROC_NAME[${PROC_NAME}]"
	if [ "${PROC_NAME}" = "$2" ];
	then
		FUNC_RESULT="true"
	else
		FUNC_RESULT="false"
	fi
}

# $1: exit code, $2: message
func_usage_exit()
{
	if [ -n "$2" ];
	then
		echo "$2"
	fi

	echo "imxtxnd [options]"
	echo "options:"
	echo "  --[install|uninstall|continue|daemon]"
	echo "    install:   Start imxtxn as a new daemon."
	echo "    uninstall: Start Terminate running imxtxn."
	echo "    continue:  Continuing from imxtxn already running."
	echo "    daemon:    Starts as a standalone daemon.(default)"
	echo "  --set-home=[directory]  Set the InterMax home directory."
	echo "                          (default:current direcotry)"
	echo "  --bit=[32|64]           Set 32 or 64 bit.(default:64)"
	echo ""

	exit $1	
}


##########################################
# option
SELF_PROC_PATH="$0"
if [ -n "$1" ];
then

	for i in $@
	do

		echo "$i"
		
		case "$i" in
		--install)
			RUN_MODE="install"
			;;
		--uninstall)
			RUN_MODE="uninstall"
			;;
		--continue)
			RUN_MODE="continue"
			;;
		--daemon)
			RUN_MODE="daemon"
			;;
		--set-home=*)
			ENV_INTERMAX_HOME=`echo "$i" | awk -F'=' '{print $2}'`
			;;
		--bit=*)
			ENV_BIT=`echo "$i" | awk -F'=' '{print $2}'`
			;;
		--help)
			func_usage_exit 0
			;;
		*)
			func_usage_exit 1 "option is wrong."
			;;
		esac
	done
fi

##########################################


##########################################
# os
# linux 만 테스트 해봄
OS_NAME=`uname -s`
case $OS_NAME in
	"HP-UX" )
		ARCH=`uname -m`
		if [ ! "${ARCH}" = "ia64" ];
		then
			func_log "${LOG_PATH}" "${ARCH} is not support."
			exit 1
		fi
		ENV_OS_TYPE=hpia
		UNIX95=1
		;;
	"SunOS" )
		ENV_OS_TYPE=sun
		;;
	"AIX"   )
		ENV_OS_TYPE=aix
		;;
	"Linux" )
		ENV_OS_TYPE=linux
		# ENV_OS_TYPE=sun
		;;
	* )
		func_log "${LOG_PATH}" "Unkown OS Name[$OS_NAME]"
		exit 1
		;;
esac

##########################################

##########################################
# set default bit
if [ "${ENV_BIT}" = "" ];
then
	# default 64 bit
	ENV_BIT=64
fi
##########################################

##########################################
# set default run mode
if [ "${RUN_MODE}" = "" ];
then
	# default 64 bit
	RUN_MODE="daemon"
fi
##########################################


##########################################
# set intermax home directory
# 1. input option
# 2. environment INTERMAX_HOME
# 3. current directory

if [ ! "${ENV_INTERMAX_HOME}" = "" ];
then
	INTERMAX_HOME="${ENV_INTERMAX_HOME}"
	export INTERMAX_HOME
fi

if [ "${INTERMAX_HOME}" = "" ];
then
	# set current direcotry base
	CUR_DIR=`pwd`
	cd ..
	INTERMAX_HOME=`pwd`
	export INTERMAX_HOME
	cd ${CUR_DIR}
fi
##########################################


##########################################
# check intermax home directory
if [ ! -d ${INTERMAX_HOME}/lib/imx ];
then
	func_log "${LOG_PATH}" "InterMax Home Directory is worng.[${INTERMAX_HOME}]"
	exit 1
fi

# 이건 없으면 새로 생성해야 하나.. 일단 에러 처리
if [ ! -d ${INTERMAX_HOME}/data/agent ];
then
	func_log "${LOG_PATH}" "InterMax Home Directory is worng.[${INTERMAX_HOME}]"
	exit 1
fi

##########################################


##########################################
# reset log path & chagne directory to InterMax home

# cd ${INTERMAX_HOME}
func_log "${LOG_PATH}" "InterMax Home Directory [${INTERMAX_HOME}]"

# 여기 이전에는 로그를 화면에 출력하도록 한다.
LOG_PATH="${INTERMAX_HOME}/log/imxtxnd.log"

##########################################

##########################################
# set execute process path

EXEC_PROCESS="${INTERMAX_HOME}/lib/imx/imxtxn"
# echo "execute process path[${EXEC_PROCESS}]"
func_log "${LOG_PATH}" "execute process path[${EXEC_PROCESS}]"

PROC_PID_PATH=${INTERMAX_HOME}/data/agent/imxtxn
func_log "${LOG_PATH}" "PROC_PID_PATH[$PROC_PID_PATH]"
##########################################

##########################################
# copy imxtxn(if not exist)
if [ ! -f ${EXEC_PROCESS} ];
then
	cp ${INTERMAX_HOME}/lib/imx/imxtxn_${ENV_OS_TYPE}_${ENV_BIT} ${EXEC_PROCESS}
	if [ ! "$?" = "0" ];
	then
		func_log "${LOG_PATH}" "${INTERMAX_HOME}/lib/imx/imxtxn_${ENV_OS_TYPE}_${ENV_BIT} is not exist."
		exit 3
	fi
fi
##########################################

##########################################
# check config

# test command(0 or 1)
# sed -n '/ENABLE_TXN_STANDALONE=\(.*\)/p' cfg/agent/imx.prop | awk -F'=' '{if($2=="1") exit(0); else exit(1);}'; echo "$?"
CMD_RESULT=`sed -n '/ENABLE_TXN_STANDALONE=\(.*\)/p' ${INTERMAX_HOME}/cfg/agent/imx.prop`
if [ ! "$?" = "0" ];
then
	echo "check please - imx config file(imx.prop)"
	exit 1
fi

CFG_ENABLE_TXN_STANDALONE=`echo "${CMD_RESULT}" | awk -F'=' '{print $2}'`
if [ ! "${CFG_ENABLE_TXN_STANDALONE}" = "1" ];
then
	echo "check please - ENABLE_TXN_STANDALONE option in imx.prop(value:${CFG_ENABLE_TXN_STANDALONE})"
	exit 1
fi

echo "ENABLE_TXN_STANDALONE config checked."
##########################################

##########################################
# run process

# stop mode에서 INTERMAX_HOME이 필요하여 여기에서 install, uninstall을 처리한다.
case ${RUN_MODE} in
"install")
	if [ -f "${PROC_PID_PATH}" ];
	then
		func_is_running_process \
			`cat ${PROC_PID_PATH}` \
			"${EXEC_PROCESS}"
		if [ "${FUNC_RESULT}" = "true" ];
		then
			echo "imxtxnd - imxtxn is already running."
			echo "imxtxnd - Rerun imxtxnd with run mode \"continue\"."
			func_log "" "imxtxnd - imxtxn is already running."
			func_log "" "imxtxnd - 'imxtxnd --stop' or delete '${INTERMAX_HOME}/data/agent/imxtxnd.pid'"
			exit 1
		fi
	fi

	nohup ${SELF_PROC_PATH} --daemon --set-home=${INTERMAX_HOME} 1>/dev/null 2>&1 &
	echo "$!" > ${INTERMAX_HOME}/data/agent/imxtxnd.pid

	echo "imxtxnd - installed[$!]"
	func_log "${LOG_PATH}" "imxtxnd - installed[$!]"

	exit 0
	;;

"continue")
	TEMP_STR=""
	if [ -f "${INTERMAX_HOME}/data/agent/imxtxnd.pid" ];
	then
		TEMP_PID=`cat ${INTERMAX_HOME}/data/agent/imxtxnd.pid`
		TEMP_STR=`ps -p ${TEMP_PID} | grep imxtxnd`
	fi

	if [ -n "${TEMP_STR}" ];
	then
		func_log "" "${TEMP_STR}"
		func_log "" "imxtxnd - imxtxnd is not running."
		exit 1
	fi

	# imxtxnd 실행되지 않은 상태에서 imxtxn만 실행 중인 경우
	# 실행 중인 imxtxn을 그대로 감시한다.
	nohup ${SELF_PROC_PATH} --daemon --set-home=${INTERMAX_HOME} 1>/dev/null 2>&1 &
	echo "$!" > ${INTERMAX_HOME}/data/agent/imxtxnd.pid
	
	echo "imxtxnd - continue[$!]"
	func_log "${LOG_PATH}" "imxtxnd - continue[$!]"

	exit 0
	;;

"uninstall")
	if [ -f "${INTERMAX_HOME}/data/agent/imxtxnd.pid" ];
	then
		rm -rf ${INTERMAX_HOME}/data/agent/imxtxnd.pid
	fi

	if [ -f "${PROC_PID_PATH}" ];
	then
		rm -rf ${PROC_PID_PATH}
		func_log "${LOG_PATH}" "imxtxnd - uninstall"
	else
		func_log "${LOG_PATH}" "imxtxnd - imxtxn is not running."
	fi
	exit 0
	;;
"daemon")
	func_log "${LOG_PATH}" "imxtxnd daemon"
	;;
esac
##########################################


##########################################
# run imxtxn
if [ ! -f "${PROC_PID_PATH}" ];
then
	${EXEC_PROCESS} -D
	func_log "${LOG_PATH}" "execute process[$EXEC_PROCESS]"
	sleep 3
fi

if [ ! -f "${PROC_PID_PATH}" ];
then
	func_log "${LOG_PATH}" "execute process has failed.[${EXEC_PROCESS}]"
	exit 4
fi

PROC_NAME=""
while [ -f "${PROC_PID_PATH}" ]
do
	echo "PROC_PID_PATH[${PROC_PID_PATH}][$EXEC_PROCESS]"
	PROC_PID=`cat ${PROC_PID_PATH}`
	echo "PROC_PID[${PROC_PID}]"

	func_is_running_process \
		"${PROC_PID}" \
		"${EXEC_PROCESS}"
	if [ "${FUNC_RESULT}" = "false" ];
	then
		func_log "${LOG_PATH}" "process is not running."
		# run process
		${EXEC_PROCESS} -D
		func_log "${LOG_PATH}" "execute process[$EXEC_PROCESS]"
	fi

	sleep 3

done
##########################################


func_log "${LOG_PATH}" "imxtxnd end"