#!/bin/sh
# this script should run as the 'git' user, not root, because of mkdir
#
# Example invocation:
# find /var/opt/gitlab/git-data/repositories -maxdepth 2 | \
#   parallel-rsync-repos /var/opt/gitlab/git-data/repositories /mnt/gitlab/repositories
#
# You can also rsync to a remote destination.
#
# parallel-rsync-repos /var/opt/gitlab/git-data/repositories user@host:/mnt/gitlab/repositories
#
# If you need to pass extra options to rsync, set the RSYNC variable
#
# env RSYNC='rsync --rsh="foo bar"' parallel-rsync-repos /src dest
#

SRC=$1
DEST=$2

if [ -z "$JOBS" ] ; then
  JOBS=10
fi

if [ -z "$SRC" ] || [ -z "$DEST" ] ; then
  echo "Usage: $0 SRC DEST"
  exit 1
fi

if [ -z "$RSYNC" ] ; then
  RSYNC=rsync
fi

if ! cd $SRC ; then
  echo "cd $SRC failed"
  exit 1
fi

sed "s|$SRC|./|" |\
  parallel -j$JOBS --progress "mkdir -p $DEST/{} && $RSYNC --delete -a {}/. $DEST/{}/"