gitbackup

#!/bin/bash
# vim: sw=5

gitRepoDir="/repos"

# File list pattern to be excluded from backup.
# That means /repos/gitplay.git and /whatever/gitplay.git will be excluded.
# If you add /whatever/directory/gitplay.git in the INCLUDE list it will
# NOT be backed.
EXCLUDE="--exclude=lost+found \
	--exclude=gitplay.git"

# Path to repositories that are not in gitRepoDir
# NOTE: The name should not match anything in EXCLUDE or it will not be bakced
# 	regardless the path.
#
#INCLUDE="/repos/myCompany-testing"
INCLUDE=""

emailTo="sysreports@myCompany.com"
toKeep=5

SELF=`basename $0`

tempF=`mktemp -q -p /tmp $SELF.XXXXXXXX`

backupF="git-`date +%Y%m%d-%H%M%S`.tgz"
backupDir="/data/netBackups/git"

while [ $# -ne 0 ]; do
    case $1 in
    "-h")
	host=$2
	shift 2
	;;
    "-u")
	user=$2
	shift 2
	;;
    *)
	echo "$0 ERROR: Unknown option $1"
	exit 1
	;;
    esac
done

if [ ! -n "$host" ] || [ ! -n "$user" ]; then
    echo "USAGE: $0 -h host -u user"
    rm -f $tempF
    exit 1
fi

rotateBackup ()
{
     dirFiles=`ssh $user@$host ls -t $backupDir/git-*`
     countFiles=`echo $dirFiles | tr ' ' '\n' | wc -l`
     if [ $countFiles -gt $toKeep ]; then
	  toDelete=`expr $countFiles - $toKeep`
	  deleteFiles=`echo $dirFiles | tr ' ' '\n' | tail -$toDelete`
     fi
     echo "     Deleting Backups: $deleteFiles" >> $tempF
     ssh $user@$host rm -f $deleteFiles
}

echo "==> [`date +\"%m/%d/%Y - %H:%M:%S\"`] START: Git repos backup" >> $tempF

tar zcf - $EXCLUDE $INCLUDE $gitRepoDir \
     | ssh $user@$host "( cat > $backupDir/$backupF )" \
     >> $tempF 2>&1

if [ $? -ne 0 ]; then
     echo "    ERROR: Backup failed" >> $tempF
     EXITSTAT=2
else
     echo "    Successful backup to $host:$backupDir/$backupF" \
	  >> $tempF
     rotateBackup
fi

echo "==> [`date +\"%m/%d/%Y - %H:%M:%S\"`] END" >> $tempF

[ "$EXITSTAT" = "2" ] && SUBJECT="ERROR:"

SUBJECT="$SUBJECT GIT Backup Report"

cat $tempF | mail -s "$SUBJECT" $emailTo

rm -f $tempF
exit 0