Bradford Morgan White
142 lines
4.2 KiB
Bash
142 lines
4.2 KiB
Bash
#######################
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# THE BACKUP FUNCTION #
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#######################
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function backup() {
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POSIT=()
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while [[ $# -gt 0 ]]; do
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KEY="$1"
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case $KEY in
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-n|--no-compress) NOCOMPRESS="yes" ;;
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-d|--delete-old) DELETEOLD="yes" ;;
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-s|--skip-uploads) SKIPUPLOADS="yes" ;;
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-p|--path) DESTDIR="$2" ; shift ;;
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*) echo "$1 not implemented" ; POSIT+=("$1") ;;
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esac
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shift
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done
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set -- "${POSIT[@]}"
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DELETEOLD="${DELETEOLD:-no}"
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SKIPUPLOADS="${SKIPUPLOADS:-no}"
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DESTDIR="${DESTDIR:-`pwd`}"
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[ -f ${DESTDIR}/wp-config.php ] || echo "this isn't a wordpress installation"
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[ -f ${DESTDIR}/wp-config.php ] || exit 1
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local DATETIME=`date +%Y%m%d.%H%M`
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echo "==WPM BACKUP CALLED ON $DATETIME WITH VERSION $WPMVERSION==" | tee -a $LOGFILE
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echo "==UNIQUE IDENTIFIER $INSTANCEID==" | tee -a $LOGFILE
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echo "==$INSTANCEID==Executing backup on $DESTDIR" >> $LOGFILE
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cd $DESTDIR
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local NAME=`echo $DESTDIR | rev | cut -d '/' -f 1 | rev`
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if [ "$NAME" == "" ] || [ ${#NAME} -lt 3 ] || [ "$NAME" == "html" ]; then
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NAME=`hostname -f`
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fi
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echo "==$INSTANCEID==The name is ${NAME}" | tee -a $LOGFILE
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local DBNAME=`grep DB_NAME wp-config.php | awk -F "'" '{print $4}'`
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echo "==$INSTANCEID==The DB name is ${DBNAME}" | tee -a $LOGFILE
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if mysql "${DBNAME}" >/dev/null 2>&1 </dev/null; then
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echo "==$INSTANCEID==${DBNAME} exists (and I have permission to access it)" | tee -a $LOGFILE
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else
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echo "==$INSTANCEID==${DBNAME} doesn't exist or I lack access, terminating" | tee -a $LOGFILE
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exit 1
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fi
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echo "==$INSTANCEID==Starting the DB dump" | tee -a $LOGFILE
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try mysqldump $DBNAME --single-transaction > $TEMPDIR/${DBNAME}.${DATETIME}.sql
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echo "==$INSTANCEID==The database dump is complete." | tee -a $LOGFILE
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if [ "$BACKUPPATH" == "PARENTOFGIVEN" ]; then
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BACKUPPATH=`dirname $DESTDIR`
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DELETEOLD="no"
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fi
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if [ "$DELETEOLD" == "yes" ]; then
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try find $BACKUPPATH -mtime +1 -type f -exec rm -fv '{}' \;;
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echo "==$INSTANCEID==removed old backups" | tee -a $LOGFILE;
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fi
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if [[ "${SKIPUPLOADS}" == "no" ]]; then
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local SF=`echo $(($(stat -f --format="%a*%S" .)))`;
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local SN=`du -sb .|awk '{print $1}'`;
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local SB=${SN}
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local SN=`echo $(($SN + $SN))`;
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if [ $SF -gt $SN ]; then
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echo "==$INSTANCEID==Adequate free space detected" | tee -a $LOGFILE
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else
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echo "==$INSTANCEID==Insufficient space available. Terminating" | tee -a $LOGFILE
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exit 1
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fi
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fi
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echo "==$INSTANCEID==Starting archive creation" | tee -a $LOGFILE
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[ `which xz` ] && COMPRESSOR="xz"
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[ `which pv` ] && PROGRESS="pv"
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if [ "$PROGRESS" == "pv" ]; then
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TAROPTIONS="cf"
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INTERPRED="pv -per -s${SB} |"
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else
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TAROPTIONS="cfv"
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INTERPRED=""
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fi
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if [ "$SKIPUPLOADS" == "yes" ]; then
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EXCLUDES="--exclude-tag=tagfile --exclude-vcs --exclude-backups"
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else
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EXCLUDES="--exclude-vcs --exclude-backups"
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fi
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if [ -d $DESTDIR/wp-content/uploads ]; then
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touch $DESTDIR/wp-content/uploads/tagfile
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fi
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MEMORY=$( echo $((`cat /proc/meminfo | grep MemTotal | awk '{print $2}'`/1024)) )
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if [[ $MEMORY -lt 1152 ]]; then
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NOCOMPRESS="yes"
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else
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NOCOMPRESS="${NOCOMPRESS:-no}"
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fi
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if [ "$NOCOMPRESS" == "yes" ]; then
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if [ "$COMPRESSOR" == "xz" ]; then
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PRED="xz -0 > $BACKUPPATH/$NAME.$DATETIME.tar.xz"
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else
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PRED="gzip -1 > $BACKUPPATH/$NAME.$DATETIME.tar.gz"
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fi
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else
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if [ "$COMPRESSOR" == "xz" ]; then
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PRED="xz -9 > $BACKUPPATH/$NAME.$DATETIME.tar.xz"
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else
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PRED="gzip -9 > $BACKUPPATH/$NAME.$DATETIME.tar.gz"
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fi
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fi
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[ `which getfacl` ] && getfacl -R `pwd` > .permissions_backup.${DATETIME}
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[ `which getfacl` ] && echo "==$INSTANCEID==Permissions backup completed." | tee -a $LOGFILE
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[ `which getfacl` ] && echo "==$INSTANCEID==Restore with setfacl --restore=${DESTDIR}/.permissions_backup.${DATETIME}" | tee -a $LOGFILE
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CMD="try tar $TAROPTIONS - $EXCLUDES --transform=\"flags=r;s|^|$DATETIME/|\" --show-transformed * $TEMPDIR/$DBNAME.$DATETIME.sql | $INTERPRED $PRED"
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eval $CMD
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rm -f $TEMPDIR/$DBNAME.$DATETIME.sql
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if [ -f $DESTDIR/wp-content/uploads/tagfile ]; then
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rm -f $DESTDIR/wp-content/uploads/tagfile
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fi
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echo "==$INSTANCEID==The archive is available at $BACKUPPATH/$NAME.$DATETIME.tar.xz"
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} # END BACKUP
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