#!/bin/bash
# +------------------------------------------------------------------+
# |             ____ _               _        __  __ _  __           |
# |            / ___| |__   ___  ___| | __   |  \/  | |/ /           |
# |           | |   | '_ \ / _ \/ __| |/ /   | |\/| | ' /            |
# |           | |___| | | |  __/ (__|   <    | |  | | . \            |
# |            \____|_| |_|\___|\___|_|\_\___|_|  |_|_|\_\           |
# |                                                                  |
# | Copyright Mathias Kettner 2014             mk@mathias-kettner.de |
# +------------------------------------------------------------------+
#
# This file is part of Check_MK.
# The official homepage is at http://mathias-kettner.de/check_mk.
#
# check_mk is free software;  you can redistribute it and/or modify it
# under the  terms of the  GNU General Public License  as published by
# the Free Software Foundation in version 2.  check_mk is  distributed
# in the hope that it will be useful, but WITHOUT ANY WARRANTY;  with-
# out even the implied warranty of  MERCHANTABILITY  or  FITNESS FOR A
# PARTICULAR PURPOSE. See the  GNU General Public License for more de-
# tails. You should have  received  a copy of the  GNU  General Public
# License along with GNU Make; see the file  COPYING.  If  not,  write
# to the Free Software Foundation, Inc., 51 Franklin St,  Fifth Floor,
# Boston, MA 02110-1301 USA.

# gets optional socket as argument
function do_query() {
  INSTANCE=$(echo $1|awk -v FS="=" '{print $2}')
  COUNT=$(ps -efww | grep [/]usr/sbin/mysqld | grep socket | wc -l)
  if [ $COUNT -gt 1 ]
  then
      INSTANCE_NAME=$(ps -efww|grep socket|grep "${INSTANCE}"|grep "[u]ser" | sed -ne 's/.*socket=\([^.]*\).*/\1/p')
      INSTANCE_NAME="[[${INSTANCE_NAME##*/}]]"
  else
      INSTANCE_NAME="[[$(ps -efww|grep socket|grep "${INSTANCE}"|grep "[u]ser" | sed -ne 's/.*user=\([^ ]*\).*/\1/p')]]"
  fi



  # Check if mysqld is running and root password setup
  echo "<<<mysql_ping>>>"
  echo $INSTANCE_NAME
  mysqladmin --defaults-extra-file=$MK_CONFDIR/mysql.cfg $1 ping 2>&1

  if [ $? -eq 0 ]; then

    echo "<<<mysql>>>"
    echo $INSTANCE_NAME
    mysql --defaults-extra-file=$MK_CONFDIR/mysql.cfg $1 -sN \
     -e "show global status ; show global variables ;"

    echo "<<<mysql_capacity>>>"
    echo $INSTANCE_NAME
    mysql --defaults-extra-file=$MK_CONFDIR/mysql.cfg $1 -sN \
      -e "SELECT table_schema, sum(data_length + index_length), sum(data_free)
         FROM information_schema.TABLES GROUP BY table_schema"

    echo "<<<mysql_slave>>>"
    echo $INSTANCE_NAME
    mysql --defaults-extra-file=$MK_CONFDIR/mysql.cfg $1 -s \
     -e "show slave status\G"

  fi

}

if which mysqladmin >/dev/null
then
  mysql_sockets=$(fgrep socket $MK_CONFDIR/mysql.cfg|sed -ne 's/.*socket=\([^ ]*\).*/\1/p')
  if [ -z "$mysql_sockets" ] ; then
    mysql_sockets=$(ps -efww | grep mysqld | grep "[s]ocket" | sed -ne 's/.*socket=\([^ ]*\).*/\1/p')
  fi
  if [ -z "$mysql_sockets" ] ; then
    do_query ""
  else
    for socket in $mysql_sockets ; do
      do_query "--socket="$socket
    done
  fi
  #echo "<<<mysql_version>>>"
  #mysql -V

  echo "<<<mysql_port>>>"
  ps -efww|grep mysqld|while read LINE; do echo $LINE|grep "[u]ser" | sed -ne 's/.*user=\([^ ]*\).*/\1/p'; echo $LINE|grep mysqld | grep "[p]ort"|sed -ne 's/.*port=\([^ ]*\).*/\1/p' ; done|xargs -n2

  #echo "<<<mysql_instances>>>"
  #mysql --defaults-extra-file=$MK_CONFDIR/mysql.cfg $1 -s \
  #   -e "show INSTANCES"

fi