改進uwsgi啓動腳本,使其支持多個獨立配置文件

最近在研究flask,在架設運行環境的時候犯了難。由於我想把每一個獨立的應用像NGINX處理多個網站那樣,每一個應用單獨一個配置文件。而網上流傳的uwsgi啓動腳本都只支持單個配置文件。雖然有文章說能夠把多個應用的配置寫成命令集成到啓動腳本里,但那樣的話顯然不夠靈活。官方文檔看了頭實在是大,找來找去也沒個頭緒。因而決定本身把啓動腳本改進一下。在原來腳本的基礎上加入了配置文件遍歷獲取,再循環處理每一個配置文件。改造難度不大效果卻很好,完美實現個人需求。現將代碼貼出來分享給有須要的人。固然若是您有更簡便的方法能達到目的,還請勞煩告之一聲。web

特別聲明:flask

一、 腳本只支持INI格式配置文件的加載,如須要加載其餘格式配置文件請自行修改腳本中對應位置代碼。bash

二、 PID文件名要求與配置文件名一致,擴展名爲pid。若是不同會致使進程不能正常關閉或從新加載。app

三、 腳本命名爲uwsgi_svr保存到/etc/init.d/目錄下,記得配置執行權限。ide

#!/bin/bash
# chkconfig: 2345 55 25
# Description: Startup script for uwsgi webserver on Debian. Place in /etc/init.d and
# run 'update-rc.d -f uwsgi defaults', or use the appropriate command on your
# distro. For CentOS/Redhat run: 'chkconfig --add uwsgi'

### BEGIN INIT INFO
# Provides:          uwsgi
# Required-Start:    $all
# Required-Stop:     $all
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts the uwsgi web server
# Description:       starts uwsgi using start-stop-daemon
### END INIT INFO

# Modify by lykyl
# Ver:1.1
# Description: script can loads multiple configs now.
 
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DESC="uwsgi daemon"
NAME=uwsgi_srv
DAEMON=/usr/local/bin/uwsgi
CONFIGDIR=/etc/uwsgi/
PIDDIR=/var/run/
SCRIPTNAME=/etc/init.d/$NAME
FindCmd="/usr/bin/find"
declare -a iniList
declare -a SiteNameList

 
function Init() {
    iniList=`$FindCmd $CONFIGDIR -name '*.ini'`
    for i in ${iniList[@]}
    do
       SiteNameList=(${SiteNameList[@]} `basename $i|awk -F. '{print $1}'`)
    done
}

function Start() 
{
    local c=0
    for i in ${iniList[@]}
    do
      if $DAEMON $i; then
        echo "${SiteNameList[$c]} started"
      else
        echo "${SiteNameList[$c]} already running"
      fi
      let ++c
    done
}
 
function Stop() 
{
    local c=0
    for i in ${SiteNameList[@]}
    do
      if $DAEMON --stop ${PIDDIR}${i}.pid; then
        echo "${SiteNameList[$c]} stoped"
      else
        echo "${SiteNameList[$c]} not running"
      fi
      rm -f ${PIDDIR}${i}.pid
      let ++c
    done
}
 
function Reload() 
{
    local c=0
    for i in ${SiteNameList[@]}
    do
      if $DAEMON --reload ${PIDDIR}${i}.pid; then
        echo "${SiteNameList[$c]} reloaded"
      else
        echo "${SiteNameList[$c]} can't reload"
      fi
      let ++c
    done
}
 
function Status() 
{
    ps aux|grep $DAEMON
    echo
}

#main
set -e
[ -x "$DAEMON" ] || exit 0
Init
 
case "$1" in
 status)
    echo -en "Status $NAME: \n"    Status
 ;;
 start)
    echo -en "Starting $NAME: \n"
    Start
 ;;
 stop)
    echo -en "Stopping $NAME: \n"
    Stop
 ;;
 reload|graceful)
    echo -en "Reloading $NAME: \n"
    Reload
 ;;
 *)
    echo "Usage: $SCRIPTNAME {start|stop|reload}" >&2
    exit 3
 ;;
esac
 
exit 0
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