install

#!/usr/bin/env bash

set -e

declare -x EVENTSTORE_ZFS_BACKUP_INSTALLDIR="${EVENTSTORE_ZFS_BACKUP_INSTALLDIR:-/usr/local/sbin}"
declare -x EVENTSTORE_ZFS_BACKUP_INSTALL_CRON="${EVENTSTORE_ZFS_BACKUP_INSTALL_CRON:-false}"

install () {
  echo "Starting installation of \"eventstore-zfs-backup\""

  mkdir -p ~/tmp-eventstore-zfs-backup
  mkdir -p "${EVENTSTORE_ZFS_BACKUP_INSTALLDIR:?}"

  cd ~/tmp-eventstore-zfs-backup || exit 1

  echo "Installing dependencies"
  apt-get update && apt-get install awscli unzip -y

  echo "Installing \"eventstore-zfs-backup\" utility"
  curl -LJO https://github.com/dotnetmentor/eventstore-zfs-backup/archive/master.zip
  unzip -o eventstore-zfs-backup-master.zip

  cp ./eventstore-zfs-backup-master/src/eventstore-zfs-backup "${EVENTSTORE_ZFS_BACKUP_INSTALLDIR:?}/eventstore-zfs-backup"
  chmod +x "${EVENTSTORE_ZFS_BACKUP_INSTALLDIR:?}/eventstore-zfs-backup"

  echo "Installing \"zfs-auto-snapshot\""
  curl -LJO https://github.com/zfsonlinux/zfs-auto-snapshot/archive/master.zip
  unzip -o zfs-auto-snapshot-master.zip

  mkdir -p /usr/local/share/man/man8
  cp ./zfs-auto-snapshot-master/src/zfs-auto-snapshot.8 /usr/local/share/man/man8/zfs-auto-snapshot.8
  chmod 0644 /usr/local/share/man/man8/zfs-auto-snapshot.8

  cp ./zfs-auto-snapshot-master/src/zfs-auto-snapshot.sh "${EVENTSTORE_ZFS_BACKUP_INSTALLDIR:?}/zfs-auto-snapshot"
  chmod +x "${EVENTSTORE_ZFS_BACKUP_INSTALLDIR:?}/zfs-auto-snapshot"

  if [[ "${EVENTSTORE_ZFS_BACKUP_INSTALL_CRON}" == "true" ]]; then
    local crontab="/etc/cron.d/eventstore-zfs-backup"
    echo "Adding backup crontab (${crontab:?})"

    echo "PATH='/usr/bin:/bin:/usr/sbin:/sbin'
EVENTSTORE_ZFS_BACKUP_BUCKET=${EVENTSTORE_ZFS_BACKUP_BUCKET:?}
EVENTSTORE_ZFS_BACKUP_REGION=${EVENTSTORE_ZFS_BACKUP_REGION:?}

*/15 * * * * root ${EVENTSTORE_ZFS_BACKUP_INSTALLDIR:?}/zfs-auto-snapshot --label=frequent --keep=16 --quiet --syslog --post-snapshot=${EVENTSTORE_ZFS_BACKUP_INSTALLDIR:?}/eventstore-zfs-backup --prefix=eventstore-zfs-snap //
00 * * * * root ${EVENTSTORE_ZFS_BACKUP_INSTALLDIR:?}/zfs-auto-snapshot --label=hourly --keep=24 --quiet --syslog --post-snapshot=${EVENTSTORE_ZFS_BACKUP_INSTALLDIR:?}/eventstore-zfs-backup --prefix=eventstore-zfs-snap //
59 23 * * * root ${EVENTSTORE_ZFS_BACKUP_INSTALLDIR:?}/zfs-auto-snapshot --label=daily --keep=14 --quiet --syslog --post-snapshot=${EVENTSTORE_ZFS_BACKUP_INSTALLDIR:?}/eventstore-zfs-backup --prefix=eventstore-zfs-snap //
59 23 * * 0 root ${EVENTSTORE_ZFS_BACKUP_INSTALLDIR:?}/zfs-auto-snapshot --label=weekly --keep=4 --quiet --syslog --post-snapshot=${EVENTSTORE_ZFS_BACKUP_INSTALLDIR:?}/eventstore-zfs-backup --prefix=eventstore-zfs-snap //
00 00 1 * * root ${EVENTSTORE_ZFS_BACKUP_INSTALLDIR:?}/zfs-auto-snapshot --label=monthly --keep=4 --quiet --syslog --post-snapshot=${EVENTSTORE_ZFS_BACKUP_INSTALLDIR:?}/eventstore-zfs-backup --prefix=eventstore-zfs-snap //
" > ${crontab:?}
  fi

  echo "Performing cleanup"
  cd ~ || exit
  rm -rf ~/tmp-eventstore-zfs-backup

  echo "Successfully installed \"eventstore-zfs-backup\" to ${EVENTSTORE_ZFS_BACKUP_INSTALLDIR:?}"
}

install "$@"