/* steve jansen */

// another day in paradise hacking code and more

Including Another Berksfile in Your Berksfile

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As part of my cooking with Chef’s new workflow, I wanted Berkshelf to dynamically import the secondary dependencies of my site-cookbook’s dependencies.

Thanks Vasily Mikhayliche’s Coderwall post and Seth Vargo’s post on Berks magic, I was able to hack something that worked for me with Berkshelf v2.0. (We don’t have time to migrate to Berks 3.0 for another couple of weeks, and this feature doesn’t seem to be part of Berks 3.0).

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# vi:ft=ruby:
site :opscode

# Extension method to import secondary dependencies in a referenced site-cookbook
# using the constraints in the site-cookbook's Berkshelf file, rather than just
# the name of the dependencies in the site-cookbook's metadata.rb file
#
# credit: https://sethvargo.com/berksfile-magic/
#         https://coderwall.com/p/j72egw
def site_cookbook(path)
  berksfile = "../#{path}/Berksfile"

  if File.exists?(berksfile)
    contents = File.read(berksfile)

    # comment out lines like `site :opscode`, which cannot be imported multiple times
    contents = contents.gsub(/(^\s*site\s)/, '#\1')

    # comment out lines like `metadata`, which cannot be imported multiple times
    contents = contents.gsub(/(^\s*metadata\s)/, '#\1')

    instance_eval(contents)
  end
end

cookbook 'nginx', '~> 2.4.4'
site_cookbook 'my-site-cookbook'

Happy cooking!

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