includes/filerepo/backend/filejournal/DBFileJournal.php

   1 <?php
   2 /**
   3  * @file
   4  * @ingroup FileJournal
   5  * @author Aaron Schulz
   6  */
   7
   8 /**
   9  * Version of FileJournal that logs to a DB table
  10  * @since 1.20
  11  */
  12 class DBFileJournal extends FileJournal {
  13         protected $wiki = false; // string; wiki DB name
  14
  15         /**
  16          * Construct a new instance from configuration.
  17          * $config includes:
  18          *     'wiki' : wiki name to use for LoadBalancer
  19          *
  20          * @param $config Array
  21          */
  22         protected function __construct( array $config ) {
  23                 parent::__construct( $config );
  24
  25                 $this->wiki = $config['wiki'];
  26         }
  27
  28         /**
  29          * @see FileJournal::logChangeBatch()
  30          * @return Status
  31          */
  32         protected function doLogChangeBatch( array $entries, $batchId ) {
  33                 $status = Status::newGood();
  34
  35                 $dbw = $this->getMasterDB();
  36                 if ( !$dbw ) {
  37                         $status->fatal( 'filejournal-fail-dbconnect', $this->backend );
  38                         return $status;
  39                 }
  40                 $now = wfTimestamp( TS_UNIX );
  41
  42                 $data = array();
  43                 foreach ( $entries as $entry ) {
  44                         $data[] = array(
  45                                 'fj_batch_uuid' => $batchId,
  46                                 'fj_backend'    => $this->backend,
  47                                 'fj_op'         => $entry['op'],
  48                                 'fj_path'       => $entry['path'],
  49                                 'fj_path_sha1'  => wfBaseConvert( sha1( $entry['path'] ), 16, 36, 31 ),
  50                                 'fj_new_sha1'   => $entry['newSha1'],
  51                                 'fj_timestamp'  => $dbw->timestamp( $now )
  52                         );
  53                 }
  54
  55                 try {
  56                         $dbw->begin();
  57                         $dbw->insert( 'filejournal', $data, __METHOD__ );
  58                         $dbw->commit();
  59                 } catch ( DBError $e ) {
  60                         $status->fatal( 'filejournal-fail-dbquery', $this->backend );
  61                         return $status;
  62                 }
  63
  64                 return $status;
  65         }
  66
  67         /**
  68          * @see FileJournal::purgeOldLogs()
  69          * @return Status
  70          */
  71         protected function doPurgeOldLogs() {
  72                 $status = Status::newGood();
  73                 if ( $this->ttlDays <= 0 ) {
  74                         return $status; // nothing to do
  75                 }
  76
  77                 $dbw = $this->getMasterDB();
  78                 if ( !$dbw ) {
  79                         $status->fatal( 'filejournal-fail-dbconnect', $this->backend );
  80                         return $status;
  81                 }
  82                 $dbCutoff = $dbw->timestamp( time() - 86400 * $this->ttlDays );
  83
  84                 try {
  85                         $dbw->begin();
  86                         $dbw->delete( 'filejournal',
  87                                 array( 'fj_timestamp < ' . $dbw->addQuotes( $dbCutoff ) ),
  88                                 __METHOD__
  89                         );
  90                         $dbw->commit();
  91                 } catch ( DBError $e ) {
  92                         $status->fatal( 'filejournal-fail-dbquery', $this->backend );
  93                         return $status;
  94                 }
  95
  96                 return $status;
  97         }
  98
  99         /**
 100          * Get a master connection to the logging DB
 101          *
 102          * @return DatabaseBase|null
 103          */
 104         protected function getMasterDB() {
 105                 try {
 106                         $lb = wfGetLBFactory()->newMainLB();
 107                         return $lb->getConnection( DB_MASTER, array(), $this->wiki );
 108                 } catch ( DBConnectionError $e ) {
 109                         return null;
 110                 }
 111         }
 112 }