#!/usr/bin/env bash

#LOGGING=true
LOGGING=false

mysql=`realpath $(which mysql) 2>/dev/null`
if [ -z "$mysql" ]; then
   if [ -x "/usr/local/mysql/bin/mysql" ]; then
      mysql=/usr/local/mysql/bin/mysql
   else
      echo
      echo -e "\t[ Error ]: \"mysql\"  not found !!!"
      echo
      exit
   fi
fi

## - Since Version 5.6, that method is considered as insecure. 
## - To avoid giving the password on command line, we use an 
## - encrypted option file
## -
## -    Create (encrypted) option file:
## -    $ mysql_config_editor set --login-path=local --socket=/var/run/mysqld/mysqld.sock  --user=backup --password
## -    $ Password:
## -
## -    Use of option file:
## -    $ mysql --login-path=local ...
## -
mysql_credential_args="--login-path=local"
#mysql_user='sys-maint'
#mysql_password='9A7NUgaJST1XiEUU'

if $LOGGING ;then
   echo -e "\n[ `date` ] Going to flush query cache.."
fi

if [ -n "$mysql_credential_args" ] ; then
   $mysql $mysql_credential_args -N -s -e "FLUSH QUERY CACHE"
else
   $mysql -u$mysql_user -p$mysql_password -N -s -e "FLUSH QUERY CACHE"
fi

[[ $? -gt 0 ]] && echo -e "\t[ Error ]: Flushing query cache failed !!"

if $LOGGING ;then
    echo -e "\n[ `date` ] End flushing query cache"
fi

exit 0