#!/bin/bash

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#MySQL database backup and restore the script

# define config variable

host=localhost

user=root

passwd=xxxxx

#this variable for grant

mainHostIp="127.0.0.1"

base_path=/opt/disk-webData/mysqlBackup

# base_path=/media/sf_website/yii/disk-webData/mysqlBackup

### backup

backupdb() {

  bak_path=$base_path/$(date +%Y%m%d)/data

  log_path=$base_path/$(date +%Y%m%d)/log

  [ ! -d $bak_path ] && mkdir -p $bak_path

  [ ! -d $log_path ] && mkdir -p $log_path

  dblist=($(mysql -u$user -p$passwd -e "show databases;"|awk -F "|" '{print $1}'|grep -Ev "Database|mysql|information_schema|performance_schema"))

  i=1

  for dbname in "${dblist[@]}"

  do

    echo -e "\n$i --> Backup database $dbname ..."

    file=$bak_path/"$dbname.sql"

    mysqldump -h$host -u$user -p$passwd -B $dbname > $file

    if [ -f $file ];then

      success="$i --> $dbname backup success!"

      echo $success;

      echo $success >> $log_path/backupLog.log

      echo "GRANT ALL PRIVILEGES ON $dbname.* TO admin@localhost;" >> $log_path/grant.log

      echo "GRANT ALL PRIVILEGES ON $dbname.* TO admin@$mainHostIp;" >> $log_path/grant.log

    fi

    let i++

  done

}

#restore

expr 1 + $1 &>/dev/null

if [ $? -eq 0 ];then

  bak_path="$base_path"/$1/data

  log_path="$base_path"/$1/log

  #restore

  cd $bak_path

  dblist=($(ls))

  i=1

  for dbname in "${dblist[@]}"

  do

    echo -e "\n$i --> Restore database $dbname ..."

    mysql -h$host -u$user -p$passwd < $dbname

    success="$i --> $dbname restore success!"

    echo $success

    echo $success >> $log_path/restoreLog.log

    let i++

  done

  #grant

  # if [ -f $log_path/grant.log ];then

    echo "Please ensure that [admin] user exist @[localhost & 127.0.0.1 & mainHostIp]";

    sleep 15s

    ii=1

    cat $log_path/grant.log | while read line

    do

      echo "$ii --> $line"

      mysql -h$host -u$user -p$passwd -e "$line"

      let ii++

    done

  # fi

elif [ "$1" == backup ];then

  backupdb

else

  cd $base_path

  dblist=($(ls))

  i=1;

  echo "Backup history ..."

  for dbname in "${dblist[@]}"

  do

    echo "$i --> $dbname"

    let i++

  done

fi