Add task for parsing log files.
user
```ruby
namespace :log do

  desc 'parses the logfile'
  task :parse => :environment do
    count = 0
    IP_REGEXP = /(?:[0-9]{1,3}\.){3}[0-9]{1,3}/
    buffer = []
    STDIN.each_line do |line|
      if count > 0
        buffer << line
        if !buffer.empty? && buffer.any? { |l| l.match /^Completed 401/ }
          puts buffer.join(" ")
          buffer = []
        end
        count -= 1
        next
      else
        buffer = [] unless buffer.empty?
      end
      next unless line.match(/^Started/)
      if !!line.match(/^Started POST \"\/nodes\" for #{IP_REGEXP} at Fri Jun 15/)
        buffer << line
        count = 5
      end
    end
  end
end```
assistant