0077c5da15
Introduced in PHP 7.1. Because it's shorter and looks nice. I used regex replacement. Change-Id: I0555e199d126cd44501f859cb4589f8bd49694da
98 lines
2.9 KiB
PHP
98 lines
2.9 KiB
PHP
<?php
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/**
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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*/
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/**
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* External storage in PHP process memory for testing.
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*
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* In this system, each store "location" is separate PHP array.
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* URLs are of the form "memory://location/id". The id/value pairs
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* at each location are segregated by DB domain ID.
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*
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* @see ExternalStoreAccess
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* @ingroup ExternalStorage
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* @since 1.33
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*/
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class ExternalStoreMemory extends ExternalStoreMedium {
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/** @var array[] Map of (location => DB domain => id => value) */
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private static $data = [];
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/** @var int */
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private static $nextId = 0;
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public function fetchFromURL( $url ) {
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[ $location, $id ] = self::getURLComponents( $url );
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if ( $id === null ) {
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throw new UnexpectedValueException( "Missing ID in URL component." );
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}
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return self::$data[$location][$this->dbDomain][$id] ?? false;
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}
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public function batchFetchFromURLs( array $urls ) {
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$blobs = [];
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foreach ( $urls as $url ) {
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$blob = $this->fetchFromURL( $url );
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if ( $blob !== false ) {
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$blobs[$url] = $blob;
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}
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}
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return $blobs;
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}
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public function store( $location, $data ) {
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$index = ++self::$nextId;
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self::$data[$location][$this->dbDomain][$index] = $data;
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return "memory://$location/$index";
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}
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/**
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* Remove all data from memory for this domain
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*/
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public function clear() {
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foreach ( self::$data as &$dataForLocation ) {
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unset( $dataForLocation[$this->dbDomain] );
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}
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unset( $dataForLocation );
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self::$data = array_filter( self::$data, 'count' );
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self::$nextId = 0;
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}
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/**
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* @param string $url
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* @return array (location, ID or null)
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*/
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private function getURLComponents( $url ) {
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// @phan-suppress-next-line PhanSuspiciousBinaryAddLists It's intentional
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[ $proto, $path ] = explode( '://', $url, 2 ) + [ null, null ];
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if ( $proto !== 'memory' ) {
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throw new UnexpectedValueException( "Got URL of protocol '$proto', not 'memory'." );
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} elseif ( $path === null ) {
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throw new UnexpectedValueException( "URL is missing path component." );
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}
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$parts = explode( '/', $path );
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if ( count( $parts ) > 2 ) {
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throw new UnexpectedValueException( "Too components in URL '$path'." );
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}
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return [ $parts[0], $parts[1] ?? null ];
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}
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}
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