lib/cmd/import-rdiff-backup-cmd.sh

   1 #!/usr/bin/env bash
   2
   3 cmd_dir="$(cd "$(dirname "$0")" && pwd)" || exit $?
   4
   5 set -o pipefail
   6
   7 must() {
   8     local file=${BASH_SOURCE[0]}
   9     local line=${BASH_LINENO[0]}
  10     "$@"
  11     local rc=$?
  12     if test $rc -ne 0; then
  13         echo "Failed at line $line in $file" 1>&2
  14         exit $rc
  15     fi
  16 }
  17
  18 usage() {
  19     echo "Usage: bup import-rdiff-backup [-n]" \
  20         "<path to rdiff-backup root> <backup name>"
  21     echo "-n,--dry-run: just print what would be done"
  22     exit 1
  23 }
  24
  25 control_c() {
  26     echo "bup import-rdiff-backup: signal 2 received" 1>&2
  27     exit 128
  28 }
  29
  30 must trap control_c INT
  31
  32 dry_run=
  33 while [ "$1" = "-n" -o "$1" = "--dry-run" ]; do
  34     dry_run=echo
  35     shift
  36 done
  37
  38 bup()
  39 {
  40     $dry_run "$cmd_dir/bup" "$@"
  41 }
  42
  43 snapshot_root="$1"
  44 branch="$2"
  45
  46 [ -n "$snapshot_root" -a "$#" = 2 ] || usage
  47
  48 if [ ! -e "$snapshot_root/." ]; then
  49     echo "'$snapshot_root' isn't a directory!"
  50     exit 1
  51 fi
  52
  53
  54 backups=$(must rdiff-backup --list-increments --parsable-output "$snapshot_root") \
  55     || exit $?
  56 backups_count=$(echo "$backups" | must wc -l) || exit $?
  57 counter=1
  58 echo "$backups" |
  59 while read timestamp type; do
  60     tmpdir=$(must mktemp -d import-rdiff-backup-XXXXXXX) || exit $?
  61
  62     echo "Importing backup from $(date -d @$timestamp +%c) " \
  63         "($counter / $backups_count)" 1>&2
  64     echo 1>&2
  65
  66     echo "Restoring from rdiff-backup..." 1>&2
  67     must rdiff-backup -r $timestamp "$snapshot_root" "$tmpdir"
  68     echo 1>&2
  69
  70     echo "Importing into bup..." 1>&2
  71     TMPIDX=$(must mktemp -u import-rdiff-backup-idx-XXXXXXX) || exit $?
  72     must bup index -ux -f "$tmpidx" "$tmpdir"
  73     must bup save --strip --date="$timestamp" -f "$tmpidx" -n "$branch" "$tmpdir"
  74     must rm -f "$tmpidx"
  75
  76     must rm -rf "$tmpdir"
  77     counter=$((counter+1))
  78     echo 1>&2
  79     echo 1>&2
  80 done