http2/middleware.php

   1 <?php
   2 // Hoplite
   3 // Copyright (c) 2016 Blue Static
   4 //
   5 // This program is free software: you can redistribute it and/or modify it
   6 // under the terms of the GNU General Public License as published by the Free
   7 // Software Foundation, either version 3 of the License, or any later version.
   8 //
   9 // This program is distributed in the hope that it will be useful, but WITHOUT
  10 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 // FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12 // more details.
  13 //
  14 // You should have received a copy of the GNU General Public License along with
  15 // this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 namespace hoplite\http2;
  18
  19 require_once HOPLITE_ROOT . '/http2/pipeline.php';
  20 require_once HOPLITE_ROOT . '/http2/request.php';
  21 require_once HOPLITE_ROOT . '/http2/response.php';
  22
  23 abstract class Middleware {
  24   protected $pipeline;
  25   protected $next;
  26
  27   public function __construct(Pipeline $pipeline,
  28                               Middleware $next) {
  29     $this->pipeline = $pipeline;
  30     $this->next = $next;
  31   }
  32
  33   public abstract /*http\Response*/ function execute(Request $request);
  34 }
  35
  36 class Sentinel extends Middleware {
  37   private $response;
  38
  39   public function __construct(Response $response) {
  40     $this->response = $response;
  41   }
  42
  43   public function execute(Request $request) {
  44     return $this->response;
  45   }
  46 }
  47
  48 class ClosureMiddleware extends Middleware {
  49   private $closure;
  50
  51   public function __construct(Pipeline $pipeline,
  52                               Middleware $next,
  53                               \Closure $closure) {
  54     parent::__construct($pipeline, $next);
  55     $this->closure = $closure;
  56   }
  57
  58   public function execute(Request $request) {
  59     $closure = $this->closure;
  60     return $closure($request, $this->next);
  61   }
  62 }