64 lines
1.6 KiB
PHP
64 lines
1.6 KiB
PHP
<?php
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/**
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* Constructor class for data kept in external repositories
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*
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* External repositories might be populated by maintenance/async
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* scripts, thus partial moving of data may be possible, as well
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* as possibility to have any storage format (i.e. for archives)
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*/
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class ExternalStore {
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/* Fetch data from given URL */
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static function fetchFromURL($url) {
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global $wgExternalStores;
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if (!$wgExternalStores)
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return false;
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@list($proto,$path)=explode('://',$url,2);
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/* Bad URL */
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if ($path=="")
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return false;
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$store =& ExternalStore::getStoreObject( $proto );
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if ( $store === false )
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return false;
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return $store->fetchFromURL($url);
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}
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/**
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* Get an external store object of the given type
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*/
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static function &getStoreObject( $proto ) {
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global $wgExternalStores;
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if (!$wgExternalStores)
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return false;
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/* Protocol not enabled */
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if (!in_array( $proto, $wgExternalStores ))
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return false;
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$class='ExternalStore'.ucfirst($proto);
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/* Any custom modules should be added to $wgAutoLoadClasses for on-demand loading */
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if (!class_exists($class)) {
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return false;
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}
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$store=new $class();
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return $store;
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}
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/**
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* Store a data item to an external store, identified by a partial URL
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* The protocol part is used to identify the class, the rest is passed to the
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* class itself as a parameter.
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* Returns the URL of the stored data item, or false on error
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*/
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static function insert( $url, $data ) {
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list( $proto, $params ) = explode( '://', $url, 2 );
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$store =& ExternalStore::getStoreObject( $proto );
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if ( $store === false ) {
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return false;
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} else {
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return $store->store( $params, $data );
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}
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}
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}
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