[middleware] Rack::BlastWave::RequestId middleware

[0exp]

• gives an unique request identificator to the each request

use Rack::BlastWave::RequestId

request.env['rack.blastwave.request_id'] # => "80f31ba599bd9b9449ea6f2061f40666"
request.request_id # => "80f31ba599bd9b9449ea6f2061f40666"

• you can setup a custom id randomizer (by providing a #call-able object):

Rack::BlastWave::RequestId.configure do |conf|
  random_values = %w[hello world].cycle
  conf.id_randomizer = -> { random_values.next }
end

# first request...
request.request_id # => "hello"
# second request...
request.request_id # => "world"
# third request...
request.request_id # => "hello"
# and etc...