Inline server middleware configuration

[gabriel-augusto]

Upperkut::Configuration class is requiring all server middlewares in an inline way at the @server_middlewares instance variable initialization

Maybe a better way is to implement the possibility to add middlewares across all workers as described in PR #42

We should be able to implement/expose something like this:

# config/initializers/upperkut.rb

Upperkut.configure do |config|
  config.server_middlewares.add(DataDog)
end

[nsoufr]

From #42

Is not a better solution to require all these files in an inline way.

I think the better way is to implement the possibility to add middlewares across all workers. The way is implemented today, each worker has its own middleware stack.

We should be able to implement/expose something like this:

# config/initializers/upperkut.rb

Upperkut.configure do |config|
  config.server_middlewares.add(DataDog)
end

That means that for each worker we need to look globally for Middlewares and copy them to worker private middleware stack.