endpoint.rb

# frozen_string_literal: true
#
# Copyright, 2019, by Samuel G. D. Williams. <http://www.codeotaku.com>
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
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# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in
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# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# THE SOFTWARE.

require_relative '../protocol'

require 'async/queue'

module Async
	module HTTP
		module Mock
			# This is an endpoint which bridges a client with a local server.
			class Endpoint
				def initialize(protocol = Protocol::HTTP2, scheme = "http", authority = "localhost", queue: Queue.new)
					@protocol = protocol
					@scheme = scheme
					@authority = authority
					
					@queue = queue
				end
				
				attr :protocol
				attr :scheme
				attr :authority
				
				# Processing incoming connections
				# @yield [::HTTP::Protocol::Request] the requests as they come in.
				def run(parent: Task.current, &block)
					while peer = @queue.dequeue
						server = @protocol.server(peer)
						
						parent.async do
							server.each(&block)
						end
					end
				end
				
				def connect
					local, remote = ::Socket.pair(Socket::AF_UNIX, Socket::SOCK_STREAM)
					
					@queue.enqueue(remote)
					
					return local
				end
				
				def wrap(endpoint)
					self.class.new(@protocol, endpoint.scheme, endpoint.authority, queue: @queue)
				end
			end
		end
	end
end