118 lines
3.7 KiB
PHP
118 lines
3.7 KiB
PHP
<?php
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/**
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* Copyright 2015 OpenStack Foundation
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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namespace App\Http\Middleware;
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use Closure;
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use Config;
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use Illuminate\Contracts\Routing\Middleware;
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use Illuminate\Http\JsonResponse;
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use libs\utils\ICacheService;
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use Log;
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use models\oauth2\IResourceServerContext;
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/**
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* Class CacheMiddleware
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* @package App\Http\Middleware
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*/
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final class CacheMiddleware implements Middleware
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{
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/**
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* @var ICacheService
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*/
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private $cache_service;
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/**
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* @var IResourceServerContext
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*/
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private $context;
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public function __construct(IResourceServerContext $context, ICacheService $cache_service)
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{
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$this->context = $context;
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$this->cache_service = $cache_service;
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}
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/**
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* Handle an incoming request.
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* @param \Illuminate\Http\Request $request
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* @param \Closure $next
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* @return mixed
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*/
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public function handle($request, Closure $next)
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{
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if ($request->getMethod() !== 'GET')
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{
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// shortcircuit
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return $next($request);
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}
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$key = $request->getPathInfo();
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$query = $request->getQueryString();
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$current_time = time();
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if(!empty($query))
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{
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$query = explode('&', $query);
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foreach($query as $q)
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{
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$q = explode('=',$q);
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if(strtolower($q[0]) === 'access_token'|| strtolower($q[0]) === 'token_type' ) continue;
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$key .= ".".implode("=",$q);
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}
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}
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$cache_lifetime = intval(Config::get('server.response_cache_lifetime', 300));
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if (str_contains($request->getPathInfo(), '/me'))
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{
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$key .= ':' . $this->context->getCurrentUserExternalId();
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}
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$data = $this->cache_service->getSingleValue($key);
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$time = $this->cache_service->getSingleValue($key.".generated");
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if (empty($data) || empty($time))
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{
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$time = $current_time;
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Log::debug(sprintf("cache value not found for key %s , getting from api...", $key));
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// normal flow ...
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$response = $next($request);
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if ($response instanceof JsonResponse && $response->getStatusCode() === 200)
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{
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// and if its json, store it on cache ...
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$data = $response->getData(true);
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$this->cache_service->setSingleValue($key, json_encode($data), $cache_lifetime);
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$this->cache_service->setSingleValue($key.".generated", $time, $cache_lifetime);
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}
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}
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else
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{
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// cache hit ...
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Log::debug(sprintf("cache hit for %s ...", $key));
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$response = new JsonResponse(json_decode($data, true), 200, array
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(
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'content-type' => 'application/json',
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)
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);
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}
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$response->headers->set('xcontent-timestamp', $time);
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$response->headers->set('Cache-Control', sprintf('private, max-age=%s', $cache_lifetime));
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$response->headers->set('Expires', gmdate('D, d M Y H:i:s \G\M\T', $time + $cache_lifetime));
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return $response;
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}
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} |