MediaWiki  1.28.0
deleteArchivedFiles.php
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1 <?php
27 require_once __DIR__ . '/Maintenance.php';
28 
35  public function __construct() {
36  parent::__construct();
37  $this->addDescription( 'Deletes all archived images.' );
38  $this->addOption( 'delete', 'Perform the deletion' );
39  $this->addOption( 'force', 'Force deletion of rows from filearchive' );
40  }
41 
42  public function execute() {
43  if ( !$this->hasOption( 'delete' ) ) {
44  $this->output( "Use --delete to actually confirm this script\n" );
45  return;
46  }
47 
48  # Data should come off the master, wrapped in a transaction
49  $dbw = $this->getDB( DB_MASTER );
50  $this->beginTransaction( $dbw, __METHOD__ );
51  $repo = RepoGroup::singleton()->getLocalRepo();
52 
53  # Get "active" revisions from the filearchive table
54  $this->output( "Searching for and deleting archived files...\n" );
55  $res = $dbw->select(
56  'filearchive',
57  [ 'fa_id', 'fa_storage_group', 'fa_storage_key', 'fa_sha1', 'fa_name' ],
58  '',
59  __METHOD__
60  );
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 
71  $file = $repo->newFile( $row->fa_name );
72  try {
73  $file->lock();
74  } catch ( LocalFileLockError $e ) {
75  $this->error( "Could not acquire lock on '{$row->fa_name}', skipping\n" );
76  continue;
77  }
78 
79  $group = $row->fa_storage_group;
80  $id = $row->fa_id;
81  $path = $repo->getZonePath( 'deleted' ) .
82  '/' . $repo->getDeletedHashPath( $key ) . $key;
83  if ( isset( $row->fa_sha1 ) ) {
84  $sha1 = $row->fa_sha1;
85  } else {
86  // old row, populate from key
87  $sha1 = LocalRepo::getHashFromKey( $key );
88  }
89 
90  // Check if the file is used anywhere...
91  $inuse = $dbw->selectField(
92  'oldimage',
93  '1',
94  [
95  'oi_sha1' => $sha1,
96  $dbw->bitAnd( 'oi_deleted', File::DELETED_FILE ) => File::DELETED_FILE
97  ],
98  __METHOD__,
99  [ 'FOR UPDATE' ]
100  );
101 
102  $needForce = true;
103  if ( !$repo->fileExists( $path ) ) {
104  $this->output( "Notice - file '$key' not found in group '$group'\n" );
105  } elseif ( $inuse ) {
106  $this->output( "Notice - file '$key' is still in use\n" );
107  } elseif ( !$repo->quickPurge( $path ) ) {
108  $this->output( "Unable to remove file $path, skipping\n" );
109  $file->unlock();
110  continue; // don't delete even with --force
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->unlock();
120  continue;
121  }
122  }
123 
124  $count++;
125  $dbw->delete( 'filearchive', [ 'fa_id' => $id ], __METHOD__ );
126  $file->unlock();
127  }
128 
129  $this->commitTransaction( $dbw, __METHOD__ );
130  $this->output( "Done! [$count file(s)]\n" );
131  }
132 }
133 
134 $maintClass = "DeleteArchivedFiles";
135 require_once RUN_MAINTENANCE_IF_MAIN;
commitTransaction(IDatabase $dbw, $fname)
Commit the transcation on a DB handle and wait for replica DBs to catch up.
div flags Integer display flags(NO_ACTION_LINK, NO_EXTRA_USER_LINKS) 'LogException'returning false will NOT prevent logging $e
Definition: hooks.txt:2102
Abstract maintenance class for quickly writing and churning out maintenance scripts with minimal effo...
Definition: maintenance.txt:39
getDB($db, $groups=[], $wiki=false)
Returns a database to be used by current maintenance script.
hasOption($name)
Checks to see if a particular param exists.
require_once RUN_MAINTENANCE_IF_MAIN
Definition: maintenance.txt:50
Maintenance script to delete archived (non-current) files from the database.
const DB_MASTER
Definition: defines.php:23
const DELETED_FILE
Definition: File.php:52
addOption($name, $description, $required=false, $withArg=false, $shortName=false, $multiOccurrence=false)
Add a parameter to the script.
$res
Definition: database.txt:21
static singleton()
Get a RepoGroup instance.
Definition: RepoGroup.php:59
addDescription($text)
Set the description text.
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Definition: distributors.txt:9
output($out, $channel=null)
Throw some output to the user.
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency which acts as the top level factory for services in MediaWiki which can be used to gain access to default instances of various services MediaWikiServices however also allows new services to be defined and default services to be redefined Services are defined or redefined by providing a callback the instantiator that will return a new instance of the service When it will create an instance of MediaWikiServices and populate it with the services defined in the files listed by thereby bootstrapping the DI framework Per $wgServiceWiringFiles lists includes ServiceWiring php
Definition: injection.txt:35
static getHashFromKey($key)
Gets the SHA1 hash from a storage key.
Definition: LocalRepo.php:177
error($err, $die=0)
Throw an error to the user.
$count
beginTransaction(IDatabase $dbw, $fname)
Begin a transcation on a DB.