fgrehm/ventriloquist

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lib/ventriloquist/cap/platforms/debian/erlang_install.rb

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module VagrantPlugins
  module Ventriloquist
    module Cap
      module Debian
        module ErlangInstall
          ERLANG_SOLUTIONS_PKG = "http://packages.erlang-solutions.com/erlang-solutions_1.0_all.deb"

          def self.erlang_install(machine)
            machine.communicate.tap do |comm|
              if comm.test('which erl > /dev/null')
                machine.env.ui.info("Skipping Erlang installation")
                return
              end

              machine.env.ui.info('Installing Erlang')

              path = download_path(comm)
              unless comm.test("test -f #{path}")
                machine.guest.capability(:download, ERLANG_SOLUTIONS_PKG, path)
              end
              comm.sudo("dpkg -i #{path}")

              comm.sudo('apt-get update')
              comm.sudo('apt-get -y install erlang')
            end
          end

          private

          def self.download_path(comm)
            # If vagrant-cachier apt cache bucket is available, drop it there
            if comm.test("test -d /tmp/vagrant-cache/apt")
              "/tmp/vagrant-cache/apt/erlang-solutions_1.0_all.deb"
            else
              "/tmp/erlang-solutions_1.0_all.deb"
            end
          end
        end
      end
    end
  end
end