Misusing git: trimming old commits

I am misusing git as a store-and-forward tool to transfer reports to a server in a resilient manner.

The context is puppet (and ppg, I've spammed the list about it... ). The reports are small, with small deltas, but created frequently.

With the exaction of the final destination, I want to expire reports that are old and successfully transferred.

My current approach is (bash-y pseudocode):

  git push bla bla || exit $?
  prunehash=$(git log -n1 --until=one.month.ago --pretty=format:%H)
  test -z "$prunehash" && exit 0
  # prep empty commit
  # skip git read-tree --empty, we get the same with
  export GIT_INDEX_FILE=/does/not/exist
  empty_tree="$(git write-tree)"
  unset GIT_INDEX_FILE
  empty_commit="$(git commit-tree -m empty "$empty_tree")"
  echo "${prunehash} ${empty_commit}" >> .git/info/grafts
  git gc
  # TODO: cleanup stale grafts :-)

is this a reasonable approach?

m
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 martin.langhoff@gmail.com
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