关于中间件服务的配置管理，分为5个阶段

schema_conf_file='/usr/local/proxy/conf/schema.xml'
table_name=$1
table_name_seprator='_'
base_date=$2
end_date_str=$3
action_option=$4
time_flag=`date +%Y_%m_%d_%H_%S`


startdate=`date -d "+1 day ${base_date}" +%Y%m%d`
enddate=`date -d "+1 day ${end_date_str}" +%Y%m%d`


touch /tmp/schema.xml.${time_flag}_tmp
table_base_name=`echo ${table_name}${table_name_seprator}${base_date}`


function backup_file(){
cp ${schema_conf_file} ${schema_conf_file}.bak.${time_flag}
}


function config_parse(){
    while [[ ${startdate} < ${enddate} ]]
        do
            echo ${startdate} 
            table_tmp_name=`echo ${table_name}${table_name_seprator}${startdate}`
            if [ `grep -w  $table_tmp_name ${schema_conf_file}|wc -l` == 1 ];then
                echo '配置 '$table_tmp_name' 已存在，请检查后重试。。。'
                return
            fi
            grep -w  $table_base_name ${schema_conf_file} >> /tmp/schema.xml.${time_flag}_tmp
            sed -i "s/${base_date}/${startdate}/g" /tmp/schema.xml.${time_flag}_tmp
            echo
            startdate=`date -d "+1 day ${startdate}" +%Y%m%d`
    done
}


function dry_run(){
line_num=`grep -n  $table_base_name ${schema_conf_file}|awk -F: '{print $1}' `
sed  ''${line_num}' r '/tmp/schema.xml.${time_flag}_tmp'' $schema_conf_file|grep -C30 $table_base_name 
}


function append_to_file(){
line_num=`grep -n  $table_base_name ${schema_conf_file}|awk -F: '{print $1}' `
sed -i ''${line_num}' r '/tmp/schema.xml.${time_flag}_tmp'' $schema_conf_file
}


function grep_file(){
file_match_cnt=`grep -C20 $table_base_name $schema_conf_file|wc -l`
if [ $file_match_cnt = 0 ];then
  echo '没有匹配的配置时间范围，请检查后重试。。。'
else
  while [[ ${startdate} < ${enddate} ]]
     do
         table_tmp_name=`echo ${table_name}${table_name_seprator}${startdate}`
         if [ `grep -w  $table_tmp_name ${schema_conf_file}|wc -l` == 1 ];then
             echo '配置 '$table_tmp_name' 已存在，文件内容如下，请检查后重试。。。'
             grep -A5 $table_tmp_name $schema_conf_file
             return
         fi
         startdate=`date -d "+1 day ${startdate}" +%Y%m%d`
  done
echo 'CHECK  RESULT: OK '
grep -C10 $table_base_name $schema_conf_file
fi
}

#执行主函数
if [ ! $action_option ];then 
    action_option='prepare'
fi


#echo $action_option
if [ $action_option = 'prepare' ];then
   grep_file
else
   backup_file
   config_parse


   if [ $action_option = 'dry-run' -o $action_option = 'dry_run' ];then
     dry_run
   elif [ $action_option = 'execute' ];then
     append_to_file
   else
        echo 'input parameter error...'
   fi
fi


rm /tmp/schema.xml.${time_flag}_tmp