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<?php
use MediaWiki\Maintenance\LoggedUpdateMaintenance;
use Wikimedia\IPUtils;
use Wikimedia\Rdbms\IMaintainableDatabase;
// @codeCoverageIgnoreStart
require_once __DIR__ . "/Maintenance.php";
// @codeCoverageIgnoreEnd
/**
* Maintenance script that migrates rows from ipblocks to block and block_target.
* The data is normalized to match the new schema. Any corrupt data that is
* encountered may be skipped, but will be logged.
*
* The old ipblocks table is left touched.
*
* @ingroup Maintenance
* @since 1.42
*/
class MigrateBlocks extends LoggedUpdateMaintenance {
private IMaintainableDatabase $dbw;
public function __construct() {
parent::__construct();
$this->addDescription(
'Copy data from the ipblocks table into the new block and block_target tables'
);
$this->addOption(
'sleep',
'Sleep time (in seconds) between every batch. Default: 0',
false,
true
);
// Batch size is typically 1000, but we'll do 500 since there are 2 writes for each ipblock.
$this->setBatchSize( 500 );
}
/** @inheritDoc */
protected function getUpdateKey() {
return __CLASS__;
}
/** @inheritDoc */
protected function doDBUpdates() {
$this->dbw = $this->getDB( DB_PRIMARY );
if (
!$this->dbw->tableExists( 'block', __METHOD__ ) ||
!$this->dbw->tableExists( 'block_target', __METHOD__ )
) {
$this->fatalError( "Run update.php to create the block and block_target tables." );
}
if ( !$this->dbw->tableExists( 'ipblocks', __METHOD__ ) ) {
$this->output( "No ipblocks table, skipping migration to block_target.\n" );
return true;
}
$this->output( "Populating the block and block_target tables\n" );
$migratedCount = 0;
$id = 0;
while ( $id !== null ) {
$this->output( "Migrating ipblocks with ID > $id...\n" );
[ $numBlocks, $id ] = $this->handleBatch( $id );
$migratedCount += $numBlocks;
}
$this->output( "Completed migration of $migratedCount ipblocks to block and block_target.\n" );
return true;
}
/**
* Handle up to $this->getBatchSize() pairs of INSERTs,
* one for block and one for block_target.
*
* @param int $lowId
* @return array [ number of blocks migrated, last ipb_id or null ]
*/
private function handleBatch( int $lowId ): array {
$migratedCount = 0;
$res = $this->dbw->newSelectQueryBuilder()
->select( '*' )
->from( 'ipblocks' )
->leftJoin( 'block', null, 'bl_id=ipb_id' )
->where( [
$this->dbw->expr( 'ipb_id', '>', $lowId ),
'bl_id' => null
] )
->orderBy( 'ipb_id' )
->limit( $this->getBatchSize() )
->caller( __METHOD__ )
->fetchResultSet();
if ( !$res->numRows() ) {
return [ $migratedCount, null ];
}
$highestId = $lowId;
foreach ( $res as $row ) {
$highestId = $row->ipb_id;
$isIP = IPUtils::isValid( $row->ipb_address );
$isRange = IPUtils::isValidRange( $row->ipb_address );
$isIPOrRange = $isIP || $isRange;
$ipHex = null;
if ( $isIP ) {
$ipHex = IPUtils::toHex( $row->ipb_address );
} elseif ( $isRange ) {
$ipHex = $row->ipb_range_start;
} elseif ( (int)$row->ipb_user === 0 ) {
// There was data corruption circa 2006 and 2011 where some accounts were
// blocked as if they were logged out users. Here we'll prune the erroneous
// data by simply not copying it to the new schema.
$this->output( "ipblock with ID $row->ipb_id: account block with ipb_user=0, skipping…\n" );
continue;
}
// Insert into block_target
$blockTarget = [
'bt_address' => $isIPOrRange ? $row->ipb_address : null,
'bt_user' => $isIPOrRange ? null : $row->ipb_user,
'bt_user_text' => $isIPOrRange ? null : $row->ipb_address,
'bt_auto' => $row->ipb_auto,
'bt_range_start' => $isRange ? $row->ipb_range_start : null,
'bt_range_end' => $isRange ? $row->ipb_range_end : null,
'bt_ip_hex' => $ipHex,
'bt_count' => 1
];
$this->dbw->newInsertQueryBuilder()
->insertInto( 'block_target' )
->row( $blockTarget )
->caller( __METHOD__ )
->execute();
$insertId = $this->dbw->insertId();
if ( !$insertId ) {
$this->fatalError(
"ipblock with ID $row->ipb_id: Failed to create block_target. Insert ID is falsy!"
);
}
// Insert into block
$block = [
'bl_id' => $row->ipb_id,
'bl_target' => $insertId,
'bl_by_actor' => $row->ipb_by_actor,
'bl_reason_id' => $row->ipb_reason_id,
'bl_timestamp' => $row->ipb_timestamp,
'bl_anon_only' => $row->ipb_anon_only,
'bl_create_account' => $row->ipb_create_account,
'bl_enable_autoblock' => $row->ipb_enable_autoblock,
'bl_expiry' => $row->ipb_expiry,
'bl_deleted' => $row->ipb_deleted,
'bl_block_email' => $row->ipb_block_email,
'bl_allow_usertalk' => $row->ipb_allow_usertalk,
// See T282890
'bl_parent_block_id' => (int)$row->ipb_parent_block_id === 0 ? null : $row->ipb_parent_block_id,
'bl_sitewide' => $row->ipb_sitewide,
];
$this->dbw->newInsertQueryBuilder()
->insertInto( 'block' )
->ignore()
->row( $block )
->caller( __METHOD__ )
->execute();
if ( $this->dbw->affectedRows() ) {
$migratedCount++;
}
}
$this->output( "Migrated $migratedCount blocks\n" );
// Sleep between batches for replication to catch up
$this->waitForReplication();
$sleep = (int)$this->getOption( 'sleep', 0 );
if ( $sleep > 0 ) {
sleep( $sleep );
}
return [ $migratedCount, $highestId ];
}
}
// @codeCoverageIgnoreStart
$maintClass = MigrateBlocks::class;
require_once RUN_MAINTENANCE_IF_MAIN;
// @codeCoverageIgnoreEnd