cmd/import-rdiff-backup-cmd.sh

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