cookbooks.rake

namespace(:cookbooks) do
  #
  # This rake script enables merging in public "cookbooks" from
  # opscode into your local "chef-repo"
  #
  # generating per-cookbook branches takes a while.  run this task on
  # your opscode cookbooks git clone and you'll end up with a zillion
  # branches with one cookbook per branch
  #
  # if you like just skip to "option #2" below to play around with this.
  #
  desc "make per-cookbook branches from the opscode cookbook repository"
  task(:branch) do
    Dir.glob("*").select {|x| FileTest.directory?(x) }.each do |path|
      `git checkout master`
      `git branch -D #{path}`
      `git checkout -b #{path}`
      `git filter-branch --tree-filter \
      'rm -rf .gitignore #{Dir.glob("*").reject {|x| x == path}.join(" ")}' \
      --prune-empty HEAD`
      `rm -rf .git/refs/original`
      `git reset --hard HEAD`
      `git push -f origin #{path}`
    end
    `git checkout master`
    `git gc --aggressive`
    `git prune`
  end

  # now go into your local "chef-repo" project.
  #
  # option #1
  #   if you ran the branch-producing script above and "cookbooks" is
  #   local do something like:
  #     git remote add cookbooks ../cookbooks
  #
  # option #2
  #   if you just want to play around with my repo add this
  #     git remote add cookbooks git://github.com/dysinger/cookbooks.git

  # now merge in an opscode cookbook right into your chef-repo without
  # loosing the history and enabling future pulls
  # (when opscode updates the cookbook) upstream :)
  # lets try it:
  #
  #  git remote fetch cookbooks
  #  rake -f ~/.rake/cookbooks.rake cookbooks:add[openvpn]
  #
  # now go see your new imported cookbooks/openvpn in a branch
  # complete with commit history. :)
  #
  desc "add an opscode cookbook as a branch in this chef repo"
  task(:add, :cookbook) do |_,a|
    `git checkout -b #{a.cookbook} master`
    `git merge -s ours --no-commit cookbooks/#{a.cookbook}`
    `git read-tree --prefix=cookbooks/ -u cookbooks/#{a.cookbook}`
    `git commit -m "Merge cookbooks/#{a.cookbook}"`
  end

  # ok you have updated from opscode and recreated the branches and
  # need to pull updates for your branch again.
  #
  #   rake -f ~/.rake/cookbooks.rake cookbooks:update[openvpn]
  #
  desc "pull an opscode cookbook's updates into our branch"
  task(:update, :cookbook) do |_,a|
    `git checkout #{a.cookbook} && \
     git pull -s subtree cookbooks #{a.cookbook}`
  end
end