def find_assays(customer)
      assays = Array.new
      assays_dir = Dir.entries("/var/scripts/assays/#{customer}/current")
      assays_dir.each { |e| assays << e unless e =~ /^\./ }
      assays
    end

    # Loop through all customer directories and find those that contain "current" symlinks
    customer_dirs = Array.new
    base_dir = Dir.entries("/var/scripts/assays")
    base_dir.each do |dir|
      if node["customer"].nil?
        if dir !~ /^\./ and File.exists?("/var/scripts/assays/#{dir}/current")
          customer_dirs << dir
        end
      else
        if dir == node["customer"] and File.exists?("/var/scripts/assays/#{dir}/current")
          Chef::Log.info "Found matching #{dir} for #{node['customer']}"
          customer_dirs << dir
        end
      end
    end

    # Find assays in each customer directory
    customer_dirs.each do |customer|
      assay_dirs = find_assays(customer)
      ...