MediaWiki  master
deleteArchivedFiles.php
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1 <?php
27 
28 require_once __DIR__ . '/Maintenance.php';
29 
36  public function __construct() {
37  parent::__construct();
38  $this->addDescription( 'Deletes all archived images.' );
39  $this->addOption( 'delete', 'Perform the deletion' );
40  $this->addOption( 'force', 'Force deletion of rows from filearchive' );
41  }
42 
43  public function execute() {
44  if ( !$this->hasOption( 'delete' ) ) {
45  $this->output( "Use --delete to actually confirm this script\n" );
46  return;
47  }
48 
49  # Data should come off the master, wrapped in a transaction
50  $dbw = $this->getDB( DB_PRIMARY );
51  $this->beginTransaction( $dbw, __METHOD__ );
52  $repo = MediaWikiServices::getInstance()->getRepoGroup()->getLocalRepo();
53 
54  # Get "active" revisions from the filearchive table
55  $this->output( "Searching for and deleting archived files...\n" );
56  $res = $dbw->newSelectQueryBuilder()
57  ->select( [ 'fa_id', 'fa_storage_group', 'fa_storage_key', 'fa_sha1', 'fa_name' ] )
58  ->from( 'filearchive' )
59  ->caller( __METHOD__ )
60  ->fetchResultSet();
61 
62  $count = 0;
63  foreach ( $res as $row ) {
64  $key = $row->fa_storage_key;
65  if ( !strlen( $key ) ) {
66  $this->output( "Entry with ID {$row->fa_id} has empty key, skipping\n" );
67  continue;
68  }
69 
70  $file = $repo->newFile( $row->fa_name );
71  $status = $file->acquireFileLock( 10 );
72  if ( !$status->isOK() ) {
73  $this->error( "Could not acquire lock on '{$row->fa_name}', skipping\n" );
74  continue;
75  }
76 
77  $group = $row->fa_storage_group;
78  $id = $row->fa_id;
79  $path = $repo->getZonePath( 'deleted' ) .
80  '/' . $repo->getDeletedHashPath( $key ) . $key;
81  if ( isset( $row->fa_sha1 ) ) {
82  $sha1 = $row->fa_sha1;
83  } else {
84  // old row, populate from key
85  $sha1 = LocalRepo::getHashFromKey( $key );
86  }
87 
88  // Check if the file is used anywhere...
89  $inuse = (bool)$dbw->newSelectQueryBuilder()
90  ->select( '1' )
91  ->from( 'oldimage' )
92  ->where( [
93  'oi_sha1' => $sha1,
94  $dbw->bitAnd( 'oi_deleted', File::DELETED_FILE ) => File::DELETED_FILE
95  ] )
96  ->caller( __METHOD__ )
97  ->forUpdate()
98  ->fetchField();
99 
100  $needForce = true;
101  if ( !$repo->fileExists( $path ) ) {
102  $this->output( "Notice - file '$key' not found in group '$group'\n" );
103  } elseif ( $inuse ) {
104  $this->output( "Notice - file '$key' is still in use\n" );
105  } elseif ( !$repo->quickPurge( $path ) ) {
106  $this->output( "Unable to remove file $path, skipping\n" );
107  $file->releaseFileLock();
108 
109  // don't delete even with --force
110  continue;
111  } else {
112  $needForce = false;
113  }
114 
115  if ( $needForce ) {
116  if ( $this->hasOption( 'force' ) ) {
117  $this->output( "Got --force, deleting DB entry\n" );
118  } else {
119  $file->releaseFileLock();
120  continue;
121  }
122  }
123 
124  $count++;
125  $dbw->delete( 'filearchive', [ 'fa_id' => $id ], __METHOD__ );
126  $file->releaseFileLock();
127  }
128 
129  $this->commitTransaction( $dbw, __METHOD__ );
130  $this->output( "Done! [$count file(s)]\n" );
131  }
132 }
133 
134 $maintClass = DeleteArchivedFiles::class;
135 require_once RUN_MAINTENANCE_IF_MAIN;
Maintenance script to delete archived (non-current) files from the database.
__construct()
Default constructor.
execute()
Do the actual work.
const DELETED_FILE
Definition: File.php:72
static getHashFromKey( $key)
Gets the SHA1 hash from a storage key.
Definition: LocalRepo.php:223
Abstract maintenance class for quickly writing and churning out maintenance scripts with minimal effo...
Definition: Maintenance.php:66
getDB( $db, $groups=[], $dbDomain=false)
Returns a database to be used by current maintenance script.
error( $err, $die=0)
Throw an error to the user.
beginTransaction(IDatabase $dbw, $fname)
Begin a transaction on a DB.
commitTransaction(IDatabase $dbw, $fname)
Commit the transaction on a DB handle and wait for replica DBs to catch up.
output( $out, $channel=null)
Throw some output to the user.
hasOption( $name)
Checks to see if a particular option was set.
addDescription( $text)
Set the description text.
addOption( $name, $description, $required=false, $withArg=false, $shortName=false, $multiOccurrence=false)
Add a parameter to the script.
Service locator for MediaWiki core services.
const DB_PRIMARY
Definition: defines.php:28
if(PHP_SAPI !='cli-server') if(!isset( $_SERVER['SCRIPT_FILENAME'])) $file
Item class for a filearchive table row.
Definition: router.php:42