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#!/bin/bash
 
### BEGIN INIT INFO
# Provides: 应用程序开发者
# RequiRED-Start: $all
# RequiRED-Stop: $all
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: 简短应用程序描述
# Description: 详细应用程序描述
### END INIT INFO
 
# 程序文件目录
ROOT="/work/code/cusflo-server-moon"
# 程序文件
APP="./dog/client_update_dog.py"
# 程序配置文件
CONFIG="./server_config.ini"
# 服务日志
DEFAULT_LOG_FILE='./daodaoliang.log'
 
# 样式定制
RED="\\e[31m"
GREEN="\\e[32m"
YELLOW="\\e[33m"
BLACK="\\e[0m"
POS="\\e[60G"
 
ok_msg() {
echo -e "${1}${POS}${BLACK}[${GREEN} OK ${BLACK}]"
}
 
failed_msg() {
echo -e "${1}${POS}${BLACK}[${RED}FAILED${BLACK}]"
}
 
# load process info of app
# exist return 0
# no exist return 1
load_process_info() {
# get pid
app_pid=$(ps -ef|grep ${APP}|gawk '$0 !~/grep/ {print $2}' |tr -s '\n' ' ')
# check pid again
ps -p ${app_pid} >/dev/null 2>/dev/null
ret=$?; if [[ 0 -ne $ret ]]; then error_msg="process $app_pid does not exists"; return 1; fi
return 0;
}
 
start() {
# if exists, exit.
load_process_info
if [[ 0 -eq $? ]]; then failed_msg "${APP} started(pid ${app_pid}), should not start it again."; return 0; fi
 
# not exists, start server
ok_msg "Starting ${APP}..."
 
# get log file
log_file=`cd ${ROOT} && cat ${CONFIG} |grep '^log_file'| awk '{print $2}'| awk -F ';' '{print $1}'`
if [[ -z $log_file ]]; then log_file=${DEFAULT_LOG_FILE}; fi
# get abs path
log_dir=`dirname $log_file`
log_file=`(cd ${ROOT} && cd $log_dir && pwd)`/`basename $log_file`
 
# TODO: FIXME: set limit by, for instance, "ulimit -HSn 10000"
if [[ -z $log_file ]]; then
(cd ${ROOT};nohup python ${APP} >/dev/null 2>&1 &)
else
(cd ${ROOT};nohup python ${APP} >/dev.null >> $log_file 2>&1 &)
fi
 
# check again after start server
for ((i = 0; i < 5; i++)); do
# sleep a little while, for app may start then crash.
sleep 0.1
load_process_info
ret=$?; if [[ 0 -ne $ret ]]; then
failed_msg "${APP} start failed";
failed_msg "see $log_file";
return $ret;
fi
done
 
# check whether started.
load_process_info
ret=$?; if [[ 0 -eq $? ]]; then ok_msg "${APP} started(pid ${app_pid})"; return 0; fi
 
failed_msg "${APP} not started"
return $ret
}
 
stop() {
# not start, exit
load_process_info
if [[ 0 -ne $? ]]; then failed_msg "${APP} not start."; return 0; fi
 
ok_msg "Stopping ${APP}(pid ${app_pid})..."
 
# process exists, try to kill to stop normally
for((i=0;i<30;i++)); do
load_process_info
if [[ 0 -eq $? ]]; then
kill -s SIGTERM ${app_pid} 2>/dev/null
ret=$?; if [[ 0 -ne $ret ]]; then failed_msg "send signal SIGTERM failed ret=$ret"; return $ret; fi
sleep 0.1
else
ok_msg "${APP} stopped by SIGTERM"
# delete the pid file when stop success.
rm -f ${pid_file}
break;
fi
done
 
# process exists, use kill -9 to force to exit
load_process_info
if [[ 0 -eq $? ]]; then
kill -s SIGKILL ${app_pid} 2>/dev/null
ret=$?; if [[ 0 -ne $ret ]]; then failed_msg "send signal SIGKILL failed ret=$ret"; return $ret; fi
ok_msg "${APP} stopped by SIGKILL"
else
# delete the pid file when stop success.
rm -f ${pid_file}
fi
 
sleep 0.1
return 0
}
 
# get the status of srs process
# @return 0 if srs is running; otherwise, 1 for stopped.
status() {
load_process_info
ret=$?; if [[ 0 -eq $ret ]]; then echo "${APP}(pid ${app_pid}) is running."; return 0; fi
 
echo "${APP} is stopped, $error_msg"
return 1
}
 
menu() {
case "$1" in
start)
start
;;
stop)
stop
;;
restart)
stop
start
;;
status)
status
;;
*)
echo "Usage: $0 {start|stop|status|restart}"
return 1
;;
esac
}
 
menu $1
 
code=$?
exit ${code}
 
 
 
 
http://daodaoliang.com/linux%E5%AD%A6%E4%B9%A0/2015/02/04/linux%E5%AD%A6%E4%B9%A0-2015-02-04-%E6%9C%8D%E5%8A%A1%E8%84%9A%E6%9C%AC%E7%BC%96%E5%86%99/

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