Enable profiling for jruby apps deployed to torquebox

config.ru

require 'rubygems'
require 'rack'
require 'jruby/profiler'

app = lambda {|env|
    profile_data = JRuby::Profiler::profile do
        output = (0..50).map do |i|
           50 * i
        end
        puts output
    end

my_output_stream = java.io.ByteArrayOutputStream.new
print_stream = java.io.PrintStream.new(my_output_stream)

profile_printer = JRuby::Profiler::GraphProfilePrinter.new(profile_data)
profile_printer.printProfile(print_stream)
result = [my_output_stream.toString]

[200, { 'Content-Type' => 'text/plain' }, result]
}
run app

profile.sh

JRUBY_OPTS='--profile.api' torquebox run