Another webrsync script

emerge_rsync-2.0 (text/plain), 2.83 KB, created by Daniel Milne on 2003-02-20 08:36:47 UTC

#!/bin/sh
# Copyright 1999-2003 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License v2
#
# Inspired by : A script by zyta2k of Switzerland, 2 May 2002 (email address not available.)
#               See http://forums.gentoo.org/viewtopic.php?t=1556 for original version
#             : emerge-webrsync
#
# Author: Dan Milne <[e-mail]>
# Version 1 : 2  October 2002
# Version 2 : 19 Feburary 2003

NICE=10
MAXDAYS=15
PORTAGEZIP=
CURPORTAGE=
SYNCPATH="/var/tmp/emerge-webrsync"

prepSyncPath() 
{
	if [ ! -d ${SYNCPATH} ] ; then
        echo -n "Creating /var/tmp/emerge-webrsync..."
		mkdir -p ${SYNCPATH}
		echo -e "\tDone"
	fi
    
    echo -n "Cleaning ${SYNCPATH}..."
    rm -rf ${SYNCPATH}/portage*
	echo -e "\tDone"
}

getMirror()
{
	if [ -e /usr/bin/spython ]
	then
		#1.0_rc6 and earlier
		PYTHON=/usr/bin/spython
	else
		#1.0 and later
		PYTHON=/usr/bin/python
	fi

	GENTOO_MIRRORS="`${PYTHON} -c 'import portage; print portage.settings["GENTOO_MIRRORS"];'`"
}

findLatestSnapshot()
{
    echo -n "Searching for snapshots..."

    for ((BACKDAYS=0; BACKDAYS<=MAXDAYS; BACKDAYS++))
    do
        DATESTR="now -"`expr ${BACKDAYS} \* 24`" hours"
        DAY=`date -d "${DATESTR}" +%Y%m%d`
        PORTAGEZIP="portage-${DAY}.tar.bz2"
        RESULT=`wget --spider ${GENTOO_MIRRORS}/snapshots/${PORTAGEZIP} 2>&1 | grep "^200 OK"`
        if [[ ${RESULT} == "200 OK" ]] ; then
            break
        fi
    done

    echo -e "\tDone"

    echo -e "Latest available snapshot is ${DAY} - ${BACKDAYS} day(s) ago."
}

dlSnapshot()
{
    echo "Downloading portage snapshot..."

    wget "${GENTOO_MIRRORS}/snapshots/${PORTAGEZIP}"

    if [[ $? == 0  ]] ; 
	then
        echo -n "Untarring snapshot..."
        nice -n ${NICE} tar xfj ${PORTAGEZIP} > /dev/null 2>&1
        echo -e "\tDone"

        echo -n "Setting ownership..."
        chown -R root:root portage
        echo -e "\tDone"

        echo  "Syncing local tree..."
        # Make sure user and group file ownership is root
        cd portage

        rsync -av --progress --stats --delete --delete-after \
        --exclude='distfiles/*' --exclude='packages/*' . /usr/portage
        cd ..

		echo -n "Adding timestamp..."
        echo ${PORTAGEZIP} > ${SYNCPATH}/.timestamp
        echo -e "\tDone"

        echo -n "Cleaning up (in the background)..."
        rm -f ${PORTAGEZIP} &
        rm -rf portage &
        echo -e "\tDone"

    else
        echo "Couldn't download the tarball! :-("
    fi
}

main()
{
    prepSyncPath

	cd ${SYNCPATH}

	getMirror

    findLatestSnapshot

    if [[ -f ${SYNCPATH}/.timestamp ]]; then
        CURPORTAGE=`cat ${SYNCPATH}/.timestamp`
    fi

    if [[ ${CURPORTAGE} != ${PORTAGEZIP} ]]; then 
        dlSnapshot 
    else
        echo "No new Snapshot available. ( Latest installed version is ${CURPORTAGE} )"
    fi

    cd - 
}


main $@