#!/bin/sh
#-------------------------------------------------------------------------
#
# vacuumdb--
#    vacuum a postgres database
#
#    This script runs psql with the "-c" option to vacuum
#    the requested database.
#
# Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
# Portions Copyright (c) 1994, Regents of the University of California
#
#
# IDENTIFICATION
#    $Header: /home/postgres/cvs_root/pgsql-r-v7.2/src/bin/scripts/vacuumdb,v 1.1.1.1 2002/02/07 17:55:16 bpalmer Exp $
#
#-------------------------------------------------------------------------

CMDNAME=`basename "$0"`
PATHNAME=`echo $0 | sed "s,$CMDNAME\$,,"`

PSQLOPT=
full=
verbose=
analyze=
table=
dbname=
alldb=
quiet=0

while [ "$#" -gt 0 ]
do
    case "$1" in
	--help|-\?)
		usage=t
                break
		;;
# options passed on to psql
	--host|-h)
		PSQLOPT="$PSQLOPT -h $2"
		shift;;
        -h*)
                PSQLOPT="$PSQLOPT $1"
                ;;
        --host=*)
                PSQLOPT="$PSQLOPT -h "`echo $1 | sed 's/^--host=//'`
                ;;
	--port|-p)
		PSQLOPT="$PSQLOPT -p $2"
		shift;;
        -p*)
                PSQLOPT="$PSQLOPT $1"
                ;;
        --port=*)
                PSQLOPT="$PSQLOPT -p "`echo $1 | sed 's/^--port=//'`
                ;;
	--username|-U)
		PSQLOPT="$PSQLOPT -U $2"
		shift;;
        -U*)
                PSQLOPT="$PSQLOPT $1"
                ;;
        --username=*)
                PSQLOPT="$PSQLOPT -U "`echo $1 | sed 's/^--username=//'`
                ;;
	--password|-W)
		PSQLOPT="$PSQLOPT -W"
		;;
	--echo|-e)
		ECHOOPT="-e"
		;;
	--quiet|-q)
		ECHOOPT="$ECHOOPT -o /dev/null"
                quiet=1
		;;
	--dbname|-d)
		dbname="$2"
		shift;;
        -d*)
                dbname=`echo $1 | sed 's/^-d//'`
                ;;
        --dbname=*)
                dbname=`echo $1 | sed 's/^--dbname=//'`
                ;;
# options converted into SQL command
	--analyze|-z)
		analyze="ANALYZE"
		;;
	--all|-a)
		alldb=Y
		;;
	--table|-t)
		table="$2"
		shift;;
        -t*)
                table=`echo $1 | sed 's/^-t//'`
                ;;
        --table=*)
                table=`echo $1 | sed 's/^--table=//'`
                ;;
	--full|-f)
		full="FULL"
		;;
	--verbose|-v)
		verbose="VERBOSE"
		;;

	-*)
		echo "$CMDNAME: invalid option: $1" 1>&2
                echo "Try '$CMDNAME --help' for more information." 1>&2
		exit 1
		;;
	*)
		dbname="$1"
		;;
    esac
    shift
done

if [ "$usage" ]; then	
        echo "$CMDNAME cleans and analyzes a PostgreSQL database."
        echo
	echo "Usage:"
        echo "  $CMDNAME [options] [dbname]"
	echo
        echo "Options:"
	echo "  -h, --host=HOSTNAME             Database server host"
	echo "  -p, --port=PORT                 Database server port"
	echo "  -U, --username=USERNAME         Username to connect as"
	echo "  -W, --password                  Prompt for password"
	echo "  -d, --dbname=DBNAME             Database to vacuum"
	echo "  -a, --all                       Vacuum all databases"
	echo "  -t, --table='TABLE[(columns)]'  Vacuum specific table only"
	echo "  -f, --full                      Do full vacuuming"
	echo "  -v, --verbose                   Write a lot of output"
	echo "  -z, --analyze                   Update optimizer hints"
	echo "  -e, --echo                      Show the command being sent to the backend"
        echo "  -q, --quiet                     Don't write any output"
        echo
        echo "Read the description of the SQL command VACUUM for details."
        echo
	echo "Report bugs to <pgsql-bugs@postgresql.org>."
	exit 0
fi

if [ "$alldb" ]; then
        if [ "$dbname" -o "$table" ]; then
                echo "$CMDNAME: cannot vacuum all databases and a specific one at the same time" 1>&2
                exit 1
        fi
	dbname=`${PATHNAME}psql $PSQLOPT -q -t -A -d template1 -c 'SELECT datname FROM pg_database WHERE datallowconn'`

elif [ -z "$dbname" ]; then
	echo "$CMDNAME: missing required argument: database name" 1>&2
        echo "Try '$CMDNAME -?' for help." 1>&2
	exit 1
fi

for db in $dbname
do
        [ "$alldb" -a "$quiet" -ne 1 ] && echo "Vacuuming $db"
	${PATHNAME}psql $PSQLOPT $ECHOOPT -c "VACUUM $full $verbose $analyze $table" -d $db
	if [ "$?" -ne 0 ]; then
	    echo "$CMDNAME: vacuum $table $db failed" 1>&2
	    exit 1
	fi
done

exit 0
