7e94ec4889
- New CREST controller - Database restructuring - improved type-casting for some controller functions - New login process - Fixed some bugs during the setup process (/setup root) - Added CREST request caching by response headers
112 lines
2.7 KiB
PHP
112 lines
2.7 KiB
PHP
<?php
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/**
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* Created by PhpStorm.
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* User: Exodus
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* Date: 12.03.2016
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* Time: 12:28
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*/
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namespace Lib;
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class Web extends \Web {
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/**
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* end of line
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* @var string
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*/
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private $eol = "\r\n";
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/**
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* get status code from Header data array
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* @param array $headers
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* @return int
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*/
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protected function getStatuscodeFromHeaders($headers = []){
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$statusCode = 0;
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if(
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preg_match(
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'/HTTP\/1\.\d (\d{3}?)/',
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implode($this->eol, $headers),
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$matches
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)
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){
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$statusCode = (int)$matches[1];
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}
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return $statusCode;
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}
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/**
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* get cache time in seconds from Header data array
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* @param array $headers
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* @return int
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*/
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protected function getCacheTimeFromHeaders($headers = []){
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$cacheTime = 0;
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if(
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preg_match(
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'/Cache-Control:(.*?)max-age=([0-9]+)/',
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implode($this->eol, $headers),
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$matches
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)
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){
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$cacheTime = (int)$matches[2];
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}elseif(
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preg_match(
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'/Access-Control-Max-Age: ([0-9]+)/',
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implode($this->eol, $headers),
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$matches
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)
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){
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$cacheTime = (int)$matches[1];
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}
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return $cacheTime;
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}
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/**
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* get a unique cache kay for a request
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* @param $url
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* @param null $options
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* @return string
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*/
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protected function getCacheKey($url, $options = null){
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$f3 = \Base::instance();
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$headers = isset($options['header']) ? implode($this->eol, (array) $options['header']) : '';
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return $f3->hash(
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$options['method'] . ' '
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. $url . ' '
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. $headers
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).'.url';
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}
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/**
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* perform curl() request
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* -> caches response by returned HTTP Cache header data
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* @param string $url
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* @param array|null $options
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* @return array|FALSE|mixed
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*/
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public function request($url,array $options = null) {
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$f3 = \Base::instance();
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if( !$f3->exists( $hash = $this->getCacheKey($url, $options) ) ){
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$result = parent::request($url, $options);
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$statusCode = $this->getStatuscodeFromHeaders( $result['headers'] );
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if($statusCode == 200){
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// request succeeded -> check if response should be cached
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if( $ttl = $this->getCacheTimeFromHeaders( $result['headers'] ) ){
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$f3->set($hash, $result, $ttl);
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}
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}
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}else{
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$result = $f3->get($hash);
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}
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return $result;
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}
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} |