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# frozen_string_literal: true # Released under the MIT License. # Copyright, 2019-2023, by Samuel Williams. require_relative 'methods' require_relative 'headers' require_relative 'request' require_relative 'response' module Protocol module HTTP # The middleware interface provides a convenient wrapper for implementing HTTP middleware. # # A middleware instance generally needs to respond to two methods: # # - `call(request)` -> `response` # - `close()` # # The call method is called for each request. The close method is called when the server is shutting down. # # You do not need to use the Middleware class to implement middleware. You can implement the interface directly. class Middleware < Methods # Convert a block to a middleware delegate. def self.for(&block) def block.close end return self.new(block) end def initialize(delegate) @delegate = delegate end attr :delegate def close @delegate.close end def call(request) @delegate.call(request) end module Okay def self.close end def self.call(request) Response[200] end end module NotFound def self.close end def self.call(request) Response[404] end end module HelloWorld def self.close end def self.call(request) Response[200, Headers['content-type' => 'text/plain'], ["Hello World!"]] end end end end end
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26 entries across 26 versions & 1 rubygems