Rake Task to parse Rails server logs and produce the WSESSLOG input format for httperf

wsesslog_tasks.rake

namespace :wsesslog do
  desc 'Generate httperf wsesslog file from Rails log file'
  task :generate do
    input = ENV['LOG']
    if input.empty?
      puts "ERROR: No log specified!"
      puts "Run like: rake wsesslog:generate LOG=log/development.log"
      exit
    end
    
    require File.dirname(__FILE__) + '/../../vendor/plugins/cainlevy-timber/lib/timber'
    
    # add to Request
    Timber::Request.class_eval {include Timber::Plugins::Rails30}
    
    logfile = Timber::Log.new(input)
    while request = logfile.shift
      method = request.http_method
      url = request.url
      wsesslog_string = "#{url} method=#{method}"
      has_params = request.instance_variables.find_index(:@params).present?
      if has_params
        parameters = request.params
        wsesslog_string << " contents='#{parameters.to_query}'"
      end
      puts wsesslog_string
    end
  end
end