includes/ExternalStoreDB.php

   1 <?php
   2 /**
   3  *
   4  * @package MediaWiki
   5  *
   6  * DB accessable external objects
   7  *
   8  */
   9 require_once( 'LoadBalancer.php' );
  10
  11
  12 /** @package MediaWiki */
  13 class ExternalStoreDB {
  14         /**
  15          * Fetch data from given URL
  16          * @param string $url An url
  17          */
  18         function fetchFromURL($url) {
  19                 global $wgExternalServers;
  20                 #
  21                 # URLs have the form DB://cluster/id, e.g.
  22                 # DB://cluster1/3298247
  23                 #
  24                 $path = explode( '/', $url );
  25                 $cluster  = $path[2];
  26                 $id       = $path[3];
  27
  28                 $lb = LoadBalancer::NewFromParams( $wgExternalServers[$cluster] );
  29                 $db = $lb->getConnection( DB_SLAVE );
  30
  31                 $ret = $db->selectField( 'blobs', 'blob_text', array( 'blob_id' => $id ) );
  32
  33                 return $ret;
  34         }
  35
  36         /* @fixme XXX: may require other methods, for store, delete,
  37          * whatever, for initial ext storage
  38          */
  39 }
  40 ?>