Capistrano recipes for update GD after deploy

gistfile1.rb

require "google_spreadsheet"

namespace :deploy do
  desc "Notify GD"
  task :gd_notify, :except => { :no_release => true } do
      rails_env = fetch(:rails_env, "production")
      local_user = ENV['USER'] || ENV['USERNAME']
      local_branch = fetch(:branch, "HEAD")

      SPECIAL_TOKEN = 'SpecialTokenForSearch'
      #get git data
      tag = {:rails_env => rails_env, :current_revision => current_revision, :repository => repository, :local_user => local_user, :local_branch => local_branch}
      cmd = `git show --pretty='format:#{SPECIAL_TOKEN}|%H|%d|%cD|%ci|%ct|%an|%ae|%f' --no-notes #{current_revision}`
      line = nil
      cmd.each do |l|
        if l.match(/^#{SPECIAL_TOKEN}/)
          line = l.chomp
          break
        end
      end
      if line
        line_array = line.split("|")
        tag[:git_branch] = line_array[2]
        tag[:date] = line_array[4]
        tag[:unix_date] = line_array[5]
        tag[:username] = line_array[6]
        tag[:email] = line_array[7]
        tag[:comment] = line_array[8]
      end
      
      # google docs
      gd_index = case rails_env
        when 'production' 
          2
        when 'qa1'
          3
        when 'qa2'
          4
        when 'staging'
          5
        else # the else clause is optional
          15
      end
      
      session = GoogleSpreadsheet.login("some_email@adility.com", "password")
      ws = session.spreadsheet_by_key("tnegtLmukDCNnH8MXo96wcA").worksheets[0] # this take from url of google spreadsheet in "key" param
      
      ws[1, 1] = "Deployed On"
      ws[1, 2] = "Branch"
      ws[1, 3] = "Time (deploy)"
      ws[1, 4] = "Revision"
      ws[1, 5] = "Revision link"
      ws[1, 6] = "By"
      ws[1, 7] = "Commiter (last)"
      ws[1, 8] = "Last comment of commit"
      ws[1, 9] = "Repository"
      
      ws[gd_index, 1] = tag[:rails_env]
      ws[gd_index, 2] = "#{tag[:local_branch]} - #{tag[:git_branch]}"
      ws[gd_index, 3] = Time.now.strftime("%d.%m.%Y %H:%M")
      ws[gd_index, 4] = tag[:current_revision]
      ws[gd_index, 5] = "https://github.com/some_platform/tree/#{tag[:current_revision]}"
      ws[gd_index, 6] = tag[:local_user]
      ws[gd_index, 7] = "#{tag[:username]} (#{tag[:email]})"
      ws[gd_index, 8] = tag[:comment]
      ws[gd_index, 9] = tag[:repository]
      ws.save()
      
      puts "Google Docs Notification Complete."
      
  end
end