#!/bin/sh
#
#
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SHELL_NAME：Logdb_Add_Partition.sh
Functional Description：At the last month auto add the logdb table partition
Argument：
$1 USER Mysql Account
$2 PASS Mysql Account Pass
$3 DB Mysql Logdb
Version：V1.0
Creater : SongYunkui
Colin_Song
Crete_time：2010/12/9
Modify：1. MODIFY BY
2. ADD BY ____ ___/__/__ Add:_________
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if [ $# -lt 3 ]; then
echo "Please Input The Correct Args"
echo "Usage Logdb_Add_Partition.sh <USER> <PASS> <DB>"
exit -1
fi
USER=$1
PASS=$2
DB=$3
##config section begin
CONN_MYSQL="-u$USER -p$PASS -s"
MYSQL_HOME=/opt/modules/mysql
MYSQL_DIR=${MYSQL_HOME}/bin/mysql
SHELL_BASE=/opt/sbin/Logdb
LOG_DIR=${SHELL_BASE}/log
OPT_NAME=add_partition
MKDIR=`whereis -b mkdir|awk '{print $2}'`
TOUCH=`whereis -b touch|awk '{print $2}'`
DATE=`whereis -b date|awk '{print $2}'`
if [ ! -d ${SHELL_BASE} ]
then
${MKDIR} -p ${SHELL_BASE}
fi
if [ ! -d ${LOG_DIR} ]
then
${MKDIR} -p ${LOG_DIR}
fi
if [ ! -d ${INI_DIR} ]
then
${MKDIR} -p ${INI_DIR}
fi
LOG_FILE=${LOG_DIR}/${OPT_NAME}.log
#config section end
#working start
CURRENT_DATE=`${DATE} +'%Y-%m-%d'`
echo "${CURRENT_DATE} everything is ok, runing start" >> ${LOG_FILE}
#loop read the partition table and column
while read TAB_NAME COL_NAME
do
COUNTER=1
CURRENT_YEAR=`date +%Y`
#check the next month
NEXT_MONTH=`date -d next-month +%m`
#check the next month has many days
case ${NEXT_MONTH} in
1|01|3|03|5|05|7|07|8|08|10|12)
CURRENT_DAY=31
;;
4|04|6|06|9|09|11)
CURRENT_DAY=30
;;
2|02)
if [ `expr ${CURRENT_YEAR} % 4` -eq 0 ]; then
if [ `expr ${CURRENT_YEAR} % 400` -eq 0 ]; then
CURRENT_DAY=29
elif [ `expr ${CURRENT_YEAR} % 100` -eq 0 ]; then
CURRENT_DAY=28
else
CURRENT_DAY=29
fi
else
CURRENT_DAY=28
fi
;;
esac
#work start add the every day partition
while [ ${COUNTER} -le ${CURRENT_DAY} ]
do
#calculate the current day's next {counter} day
PATNAME_DATE=`date -d "${COUNTER} days" +%Y%m%d`
COUNTER=`expr ${COUNTER} + 1`
PAT_DATE=`date -d "${COUNTER} days" +%Y%m%d`
#change the unix_timestamp
PAT_UNIX_TIMESTAMP=`${MYSQL_DIR} ${CONN_MYSQL} <<EOF
use ${DB};
select UNIX_TIMESTAMP('${PAT_DATE}');
EOF`
##add partition sql
V_SQL="ALTER TABLE ${DB}."${TAB_NAME}" ADD PARTITION (PARTITION P"${PATNAME_DATE}" VALUES LESS THAN ("${PAT_UNIX_TIMESTAMP}"));"
echo $V_SQL
#exec the sql
${MYSQL_DIR} ${CONN_MYSQL} <<EOF
use ${DB};
$V_SQL;
EOF
done
done<./Logdb_Partition.ini
#working end
END_DATE=`${DATE} +'%Y-%m-%d %H:%M:%S'`
echo "${END_DATE} runing finished" >> ${LOG_FILE}
echo -e "/n--------------------------------------------------------------------" >> ${LOG_FILE}