backup.sh

#!/usr/bin/env bash
set -euo pipefail

USER=cgag
HOME=/home/cgag


source $HOME/.keychain/$USER-sh

# TODO(cgag): write last backup to some sort of status file so I
# can display last backup time in the i3 status bar.

# TODO: host is somewhat of a misnomer
# TODO: attic check is really slow, move it into
#       a separate script and run it less often?
main() {

  # HOME_EXTERNAL="/mnt/home-external"
  # WORK_EXTERNAL="/mnt/work-external"

  # backup_important "cgag@accord:backups/coreos.borg" &

  # if mounted "$WORK_EXTERNAL"; then
  #   backup_full "${WORK_EXTERNAL}/coreos.borg" &
  # else
  #   echo "NOT MOUNTED: ${WORK_EXTERNAL}, SKIPPING"
  # fi

  # if mounted "$HOME_EXTERNAL"; then
  #   backup_full "${HOME_EXTERNAL}/coreos.borg" &
  # else
  #   echo "NOT MOUNTED: ${HOME_EXTERNAL}, SKIPPING"
  # fi

  if [ -d "/tank/backup" ]; then
    backup_full "/tank/backup/desktop.borg" &
  else
    echo "NOT MOUNTED: /tank/backup, SKIPPING"
  fi

  # should always work
  # here: backup rsync.net
  backup_full 1387@rsyncnet:backup &

  wait

  echo 'Done with backups.'
}

mounted() {
  local mount=$1
  grep -qs "$mount" /proc/mounts
}

backup_full() {
  # TODO(cgag): maybe remove
  BORG_RSH='/home/cgag/bin/pv-wrapper.sh ssh'

  local repo=$1
  echo "Running full home backup to $repo"
  pass=$(cat /home/cgag/.ssh/.atticpass)

  # TODO(cgag): exclude video dir?
  BORG_PASSPHRASE=$pass borg create \
    --remote-path=borg1 \
    -v \
    --stats \
    --exclude "*/.stack"            \
    --exclude "*/.stack-work"       \
    --exclude "*/.haskell-vim-now"  \
    --exclude "*/.cabal-sandbox"    \
    --exclude "*/.cargo"            \
    --exclude "*/.cache"            \
    --exclude-caches                \
    --one-file-system               \
    --compression lz4               \
    "$repo"::'{hostname}-{now:%Y-%m-%dT%H:%M:%S}'  \
    ~

  #check "$repo"
  prune "$repo"
}

# backup_important() {
#   local repo=$1
#   echo "Running important backup to $repo"

#   pass=$(cat /home/cgag/.ssh/.atticpass)

#   # better to backup everything but not video, instead of this whole list? 
#   # edit: oh that's what backup full does
#   BORG_PASSPHRASE=$pass borg create -v --stats "$repo"::'{hostname}-{now:%Y-%m-%d}' \
#     --exclude "*/.stack"           \
#     --exclude "*/.haskell-vim-now" \
#     --exclude "*/.stack-work/"     \
#     --exclude "*/.cabal-sandbox/"  \
#     --exclude "*/.cargo"           \
#     --exclude "*/target"           \
# 		--exclude "src/others"         \
#     --exclude-caches               \
#     --one-file-system              \
#     ~/doc                          \
#     ~/src                          \
#     ~/play                         \
#     ~/.ssh                         \
# 	  ~/notes                        \
#     ~/kp.kdbx                      \
#     ~/mail

#   # check "$repo"
#   prune "$repo"
# }

check() {
  local repo=$1
  echo "Checking $repo"

  pass=$(cat /home/cgag/.ssh/.atticpass)

  BORG_PASSPHRASE=$pass borg check -v "$repo"
}

prune() {
  # calling host repo would make more sense
  local repo=$1
  echo "Pruning $repo"

  pass=$(cat /home/cgag/.ssh/.atticpass)

  BORG_PASSPHRASE=$pass borg prune \
    -v \
    --list \
    --stats \
    --prefix '{hostname}-' \
    --keep-within=1d  \
    --keep-daily=7    \
    --keep-weekly=4   \
    --keep-monthly=-1
    "$repo"
}

main