~drizzle-trunk/drizzle/development

#!/bin/sh

# Copyright Abandoned 1996 TCX DataKonsult AB & Monty Program KB & Detron HB

# This file is public domain and comes with NO WARRANTY of any kind

# MySQL daemon start/stop script.

# Usually this is put in /etc/init.d (at least on machines SYSV R4 based

# systems) and linked to /etc/rc3.d/S99mysql and /etc/rc0.d/K01mysql.

# When this is done the mysql server will be started when the machine is

# started and shut down when the systems goes down.

# Comments to support chkconfig on RedHat Linux

# chkconfig: 2345 64 36

# description: A very fast and reliable SQL database engine.

# Comments to support LSB init script conventions

### BEGIN INIT INFO

# Provides: mysql

# Required-Start: $local_fs $network $remote_fs

# Should-Start: ypbind nscd ldap ntpd xntpd

# Required-Stop: $local_fs $network $remote_fs

# Default-Start:  2 3 4 5

# Default-Stop: 0 1 6

# Short-Description: start and stop MySQL

# Description: MySQL is a very fast and reliable SQL database engine.

### END INIT INFO

# If you install MySQL on some other places than @prefix@, then you

# have to do one of the following things for this script to work:

#

# - Run this script from within the MySQL installation directory

# - Create a /etc/my.cnf file with the following information:

#   [mysqld]

#   basedir=<path-to-mysql-installation-directory>

# - Add the above to any other configuration file (for example ~/.my.ini)

#   and copy my_print_defaults to /usr/bin

# - Add the path to the mysql-installation-directory to the basedir variable

#   below.

#

# If you want to affect other MySQL variables, you should make your changes

# in the /etc/my.cnf, ~/.my.cnf or other MySQL configuration files.

# If you change base dir, you must also change datadir. These may get

# overwritten by settings in the MySQL configuration files.

basedir=

datadir=

# Default value, in seconds, afterwhich the script should timeout waiting

# for server start. 

# Value here is overriden by value in my.cnf. 

# 0 means don't wait at all

# Negative numbers mean to wait indefinitely

service_startup_timeout=900

# The following variables are only set for letting mysql.server find things.

# Set some defaults

pid_file=

server_pid_file=

use_mysqld_safe=1

user=@MYSQLD_USER@

if test -z "$basedir"

then

  basedir=@prefix@

  bindir=@bindir@

  if test -z "$datadir"

  then

    datadir=@localstatedir@

  fi

  sbindir=@sbindir@

  libexecdir=@libexecdir@

else

  bindir="$basedir/bin"

  if test -z "$datadir"

  then

    datadir="$basedir/data"

  fi

  sbindir="$basedir/sbin"

  libexecdir="$basedir/libexec"

fi

# datadir_set is used to determine if datadir was set (and so should be

# *not* set inside of the --basedir= handler.)

datadir_set=

#

# Use LSB init script functions for printing messages, if possible

#

lsb_functions="/lib/lsb/init-functions"

if test -f $lsb_functions ; then

  . $lsb_functions

else

  log_success_msg()

  {

    echo " SUCCESS! $@"

  }

  log_failure_msg()

  {

    echo " ERROR! $@"

  }

fi

PATH=/sbin:/usr/sbin:/bin:/usr/bin:$basedir/bin

export PATH

mode=$1    # start or stop

shift

other_args="$*"   # uncommon, but needed when called from an RPM upgrade action

           # Expected: "--skip-networking --skip-grant-tables"

           # They are not checked here, intentionally, as it is the resposibility

           # of the "spec" file author to give correct arguments only.

case `echo "testing\c"`,`echo -n testing` in

    *c*,-n*) echo_n=   echo_c=     ;;

    *c*,*)   echo_n=-n echo_c=     ;;

    *)       echo_n=   echo_c='\c' ;;

esac

parse_server_arguments() {

  for arg do

    case "$arg" in

      --basedir=*)  basedir=`echo "$arg" | sed -e 's/^[^=]*=//'`

                    bindir="$basedir/bin"

		    if test -z "$datadir_set"; then

		      datadir="$basedir/data"

		    fi

		    sbindir="$basedir/sbin"

		    libexecdir="$basedir/libexec"

        ;;

      --datadir=*)  datadir=`echo "$arg" | sed -e 's/^[^=]*=//'`

		    datadir_set=1

	;;

      --user=*)  user=`echo "$arg" | sed -e 's/^[^=]*=//'` ;;

      --pid-file=*) server_pid_file=`echo "$arg" | sed -e 's/^[^=]*=//'` ;;

      --service-startup-timeout=*) service_startup_timeout=`echo "$arg" | sed -e 's/^[^=]*=//'` ;;

      --use-mysqld_safe) use_mysqld_safe=1;;

      --use-manager)     use_mysqld_safe=0;;

    esac

  done

}

parse_manager_arguments() {

  for arg do

    case "$arg" in

      --pid-file=*) pid_file=`echo "$arg" | sed -e 's/^[^=]*=//'` ;;

      --user=*)  user=`echo "$arg" | sed -e 's/^[^=]*=//'` ;;

    esac

  done

}

wait_for_pid () {

  verb="$1"

  manager_pid="$2"  # process ID of the program operating on the pid-file

  i=0

  avoid_race_condition="by checking again"

  while test $i -ne $service_startup_timeout ; do

    case "$verb" in

      'created')

        # wait for a PID-file to pop into existence.

        test -s $pid_file && i='' && break

        ;;

      'removed')

        # wait for this PID-file to disappear

        test ! -s $pid_file && i='' && break

        ;;

      *)

        echo "wait_for_pid () usage: wait_for_pid created|removed manager_pid"

        exit 1

        ;;

    esac

    # if manager isn't running, then pid-file will never be updated

    if test -n "$manager_pid"; then

      if kill -0 "$manager_pid" 2>/dev/null; then

        :  # the manager still runs

      else

        # The manager may have exited between the last pid-file check and now.  

        if test -n "$avoid_race_condition"; then

          avoid_race_condition=""

          continue  # Check again.

        fi

        # there's nothing that will affect the file.

        log_failure_msg "Manager of pid-file quit without updating file."

        return 1  # not waiting any more.

      fi

    fi

    echo $echo_n ".$echo_c"

    i=`expr $i + 1`

    sleep 1

  done

  if test -z "$i" ; then

    log_success_msg

    return 0

  else

    log_failure_msg

    return 1

  fi

}

# Get arguments from the my.cnf file,

# the only group, which is read from now on is [mysqld]

if test -x ./bin/my_print_defaults

then

  print_defaults="./bin/my_print_defaults"

elif test -x $bindir/my_print_defaults

then

  print_defaults="$bindir/my_print_defaults"

elif test -x $bindir/mysql_print_defaults

then

  print_defaults="$bindir/mysql_print_defaults"

else

  # Try to find basedir in /etc/my.cnf

  conf=/etc/my.cnf

  print_defaults=

  if test -r $conf

  then

    subpat='^[^=]*basedir[^=]*=\(.*\)$'

    dirs=`sed -e "/$subpat/!d" -e 's//\1/' $conf`

    for d in $dirs

    do

      d=`echo $d | sed -e 's/[ 	]//g'`

      if test -x "$d/bin/my_print_defaults"

      then

        print_defaults="$d/bin/my_print_defaults"

        break

      fi

      if test -x "$d/bin/mysql_print_defaults"

      then

        print_defaults="$d/bin/mysql_print_defaults"

        break

      fi

    done

  fi

  # Hope it's in the PATH ... but I doubt it

  test -z "$print_defaults" && print_defaults="my_print_defaults"

fi

#

# Read defaults file from 'basedir'.   If there is no defaults file there

# check if it's in the old (depricated) place (datadir) and read it from there

#

extra_args=""

if test -r "$basedir/my.cnf"

then

  extra_args="-e $basedir/my.cnf"

else

  if test -r "$datadir/my.cnf"

  then

    extra_args="-e $datadir/my.cnf"

  fi

fi

parse_server_arguments `$print_defaults $extra_args mysqld server mysql_server mysql.server`

# Look for the pidfile 

parse_manager_arguments `$print_defaults $extra_args manager`

#

# Set pid file if not given

#

if test -z "$pid_file"

then

  pid_file=$datadir/mysqlmanager-`@HOSTNAME@`.pid

else

  case "$pid_file" in

    /* ) ;;

    * )  pid_file="$datadir/$pid_file" ;;

  esac

fi

if test -z "$server_pid_file"

then

  server_pid_file=$datadir/`@HOSTNAME@`.pid

else

  case "$server_pid_file" in

    /* ) ;;

    * )  server_pid_file="$datadir/$server_pid_file" ;;

  esac

fi

case "$mode" in

  'start')

    # Start daemon

    # Safeguard (relative paths, core dumps..)

    cd $basedir

    manager=$bindir/mysqlmanager

    if test -x $libexecdir/mysqlmanager

    then

      manager=$libexecdir/mysqlmanager

    elif test -x $sbindir/mysqlmanager

    then

      manager=$sbindir/mysqlmanager

    fi

    echo $echo_n "Starting MySQL"

    if test -x $manager -a "$use_mysqld_safe" = "0"

    then

      if test -n "$other_args"

      then

        log_failure_msg "MySQL manager does not support options '$other_args'"

        exit 1

      fi

      # Give extra arguments to mysqld with the my.cnf file. This script may

      # be overwritten at next upgrade.

      "$manager" \

        --mysqld-safe-compatible \

        --user="$user" \

        --pid-file="$pid_file" >/dev/null 2>&1 &

      wait_for_pid created $!; return_value=$?

      # Make lock for RedHat / SuSE

      if test -w /var/lock/subsys

      then

        touch /var/lock/subsys/mysqlmanager

      fi

      exit $return_value

    elif test -x $bindir/mysqld_safe

    then

      # Give extra arguments to mysqld with the my.cnf file. This script

      # may be overwritten at next upgrade.

      pid_file=$server_pid_file

      $bindir/mysqld_safe --datadir=$datadir --pid-file=$server_pid_file $other_args >/dev/null 2>&1 &

      wait_for_pid created $!; return_value=$?

      # Make lock for RedHat / SuSE

      if test -w /var/lock/subsys

      then

        touch /var/lock/subsys/mysql

      fi

      exit $return_value

    else

      log_failure_msg "Couldn't find MySQL manager ($manager) or server ($bindir/mysqld_safe)"

    fi

    ;;

  'stop')

    # Stop daemon. We use a signal here to avoid having to know the

    # root password.

    # The RedHat / SuSE lock directory to remove

    lock_dir=/var/lock/subsys/mysqlmanager

    # If the manager pid_file doesn't exist, try the server's

    if test ! -s "$pid_file"

    then

      pid_file=$server_pid_file

      lock_dir=/var/lock/subsys/mysql

    fi

    if test -s "$pid_file"

    then

      mysqlmanager_pid=`cat $pid_file`

      echo $echo_n "Shutting down MySQL"

      kill $mysqlmanager_pid

      # mysqlmanager should remove the pid_file when it exits, so wait for it.

      wait_for_pid removed "$mysqlmanager_pid"; return_value=$?

      # delete lock for RedHat / SuSE

      if test -f $lock_dir

      then

        rm -f $lock_dir

      fi

      exit $return_value

    else

      log_failure_msg "MySQL manager or server PID file could not be found!"

    fi

    ;;

  'restart')

    # Stop the service and regardless of whether it was

    # running or not, start it again.

    if $0 stop  $other_args; then

      $0 start $other_args

    else

      log_failure_msg "Failed to stop running server, so refusing to try to start."

      exit 1

    fi

    ;;

  'reload'|'force-reload')

    if test -s "$server_pid_file" ; then

      read mysqld_pid <  $server_pid_file

      kill -HUP $mysqld_pid && log_success_msg "Reloading service MySQL"

      touch $server_pid_file

    else

      log_failure_msg "MySQL PID file could not be found!"

      exit 1

    fi

    ;;

  'status')

    # First, check to see if pid file exists

    if test -s "$server_pid_file" ; then 

      read mysqld_pid < $server_pid_file

      if kill -0 $mysqld_pid 2>/dev/null ; then 

        log_success_msg "MySQL running ($mysqld_pid)"

        exit 0

      else

        log_failure_msg "MySQL is not running, but PID file exists"

        exit 1

      fi

    else

      # Try to find appropriate mysqld process

      mysqld_pid=`pidof $libexecdir/mysqld`

      if test -z $mysqld_pid ; then 

        if test "$use_mysqld_safe" = "0" ; then 

          lockfile=/var/lock/subsys/mysqlmanager

        else

          lockfile=/var/lock/subsys/mysql

        fi 

        if test -f $lockfile ; then 

          log_failure_msg "MySQL is not running, but lock exists"

          exit 2

        fi 

        log_failure_msg "MySQL is not running"

        exit 3

      else

        log_failure_msg "MySQL is running but PID file could not be found"

        exit 4

      fi

    fi

    ;;

    *)

      # usage

      echo "Usage: $0  {start|stop|restart|reload|force-reload|status}  [ MySQL server options ]"

      exit 1

    ;;

esac

exit 0