Positioning a new middleware in stack

[marcelobfonseca]

Hello, I'd like to place a particular middleware first in the middleware stack but i notice that theres not a method in Sinatra::Base to accomplish this. The only method available is def use(middleware, *args, &block) which will be placed at the bottom of the stack. I was looking for something similar to Rails config.middleware.insert_before(existing_middleware, new_middleware, args). Can we have a feature for this? In the meanwhile, how can I extend Sinatra / Base to insert a middleware at a certain position on the stack?

[dentarg]

I've seen this being done by adding behavior to the setup_default_middleware method

See https://github.com/rapid7/metasploit-framework/pull/12980/files#diff-450c1438fd1939e93afa67f321933d2b44a8b254ad6ce4616d08269588b623e6 for the example

I tried it myself over at https://github.com/dentarg/gists/tree/10d569f00b83d549395c18a4cb87462670b91e1c/gists/sinatra-insert-middleware and it seems to work still

You can also call use <middleware> in config.ru to add middlewares that should run before Sinatra does