```ruby
require 'sinatra/base'
require 'sinatra/json'
require 'casa/publisher/persistence/memory_storage_handler'

module CASA
  module Publisher
    class App < Sinatra::Base

      @@storage_handler = false
      @@postprocess_handler = false

      def self.set_postprocess_handler handler
        @@postprocess_handler = handler
      end

      def self.set_storage_handler handler
        @@storage_handler = handler
      end

      def self.postprocess_handler
        @@postprocess_handler
      end

      def self.storage_handler
        @@storage_handler
      end

      get '/payloads' do

        begin
          request.accept? 'application/json'
        rescue
          error 406, "Not Acceptable"
        end

        error 501, "Not Implemented" unless @@storage_handler

        # NOTE: error 415 should be thrown if client processes body and unsupported request Content-Type
        # NOTE: error 400 should be thrown if client processes body and it is malformed per the Content-Type

        json @@storage_handler.get_all.map(){ |payload|
          @@postprocess_handler ? @@postprocess_handler.execute(payload) : payload
        }.select(){ |payload|
          payload
        }

      end

    end
  end
end
```

Add /out/payloads as primary route and alias /payloads
user
```ruby
require 'sinatra/base'
require 'sinatra/json'
require 'casa/publisher/persistence/memory_storage_handler'

module CASA
  module Publisher
    class App < Sinatra::Base

      @@storage_handler = false
      @@postprocess_handler = false

      def self.set_postprocess_handler handler
        @@postprocess_handler = handler
      end

      def self.set_storage_handler handler
        @@storage_handler = handler
      end

      def self.postprocess_handler
        @@postprocess_handler
      end

      def self.storage_handler
        @@storage_handler
      end

      get '/out/payloads' do

        begin
          request.accept? 'application/json'
        rescue
          error 406, "Not Acceptable"
        end

        error 501, "Not Implemented" unless @@storage_handler

        # NOTE: error 415 should be thrown if client processes body and unsupported request Content-Type
        # NOTE: error 400 should be thrown if client processes body and it is malformed per the Content-Type

        json @@storage_handler.get_all.map(){ |payload|
          @@postprocess_handler ? @@postprocess_handler.execute(payload) : payload
        }.select(){ |payload|
          payload
        }

      end

      get '/payloads' do
        call! env.merge("PATH_INFO" => '/transit/payloads')
      end

    end
  end
end
```
assistant