backup-github

#!/bin/bash

set -e
#set -x

TOKEN=$( cat /root/.github-token )

BASEURL="https://api.github.com/orgs/${1}/repos?type=owner&access_token=${TOKEN}&per_page=100"

BACKUPS_ZFS="zones/$( zonename )/data/backup/github"
BACKUPS_ROOT="/var/helium/backups/github"

function get_repo {
  REPO=$1

  DIR=$(echo "${REPO}" | sed -e 's#.*/##' )

  if [ ! -f "$BACKUPS_ROOT/$DIR/config" ]; then
    echo "Cloning $REPO ($DIR)"

    zfs create -p $BACKUPS_ZFS/$DIR

    cd $BACKUPS_ROOT

    git clone --mirror $REPO

  else
    echo "Updating $REPO ($DIR)"

    cd $BACKUPS_ROOT/$DIR

    git fetch -p origin

    cd $BACKUPS_ROOT
  fi
}

zfs create -p $BACKUPS_ZFS

MOUNT=$( zfs get -H -o value mountpoint $BACKUPS_ZFS )

# zfs set mountpoint trying to umount, which fails for good reasons. Check the
# mountpoint before setting it.
if [ "$MOUNT" != "$BACKUPS_ROOT" ] ; then
  zfs set mountpoint=$BACKUPS_ROOT $BACKUPS_ZFS
fi

for REPO in $( curl -s "${BASEURL}" | json -a ssh_url ) ; do
  get_repo $REPO

  WIKI_REPO=$( echo $REPO | sed -e 's/\.git/.wiki.git/' )

  # This might fail if has_wiki=false, or there are no wiki pages yet.
  set +e
  get_repo $WIKI_REPO
  set -e
done