94 lines
3.7 KiB
PHP
94 lines
3.7 KiB
PHP
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<?php
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/**
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* Copy all files in one container of one backend to another.
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*
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* This can also be used to re-shard the files for one backend using the
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* config of second backend. The second backend should have the same config
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* as the first, except for it having a different name and different sharding
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* configuration. The backend should be made read-only while this runs.
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* After this script finishes, the old files in the containers can be deleted.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @ingroup Maintenance
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*/
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require_once( dirname( __FILE__ ) . '/Maintenance.php' );
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class CopyFileBackend extends Maintenance {
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public function __construct() {
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parent::__construct();
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$this->mDescription = "Copy all the files in one backend to another.";
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$this->addOption( 'src', 'Backend containing the source files', true, true );
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$this->addOption( 'dst', 'Backend where files should be copied to', true, true );
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$this->addOption( 'containers', 'Pipe separated list of containers', true, true );
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$this->addOption( 'fast', 'Skip SHA-1 checks on pre-existing files' );
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}
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public function execute() {
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$src = FileBackendGroup::singleton()->get( $this->getOption( 'src' ) );
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$dst = FileBackendGroup::singleton()->get( $this->getOption( 'dst' ) );
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$containers = explode( '|', $this->getOption( 'containers' ) );
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foreach ( $containers as $container ) {
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$this->output( "Doing container $container...\n" );
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$srcPathsRel = $src->getFileList(
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array( 'dir' => $src->getRootStoragePath() . "/$container" ) );
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if ( $srcPathsRel === null ) {
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$this->error( "Could not list files in $container.", 1 ); // die
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}
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foreach ( $srcPathsRel as $srcPathRel ) {
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$srcPath = $src->getRootStoragePath() . "/$container/$srcPathRel";
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$dstPath = $dst->getRootStoragePath() . "/$container/$srcPathRel";
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if ( $dst->fileExists( array( 'src' => $dstPath, 'latest' => 1 ) ) ) {
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if ( $this->hasOption( 'fast' ) ) {
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$this->output( "Already have $dstPath.\n" );
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continue; // assume already copied...
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}
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$srcSha1 = $src->getFileSha1Base36( array( 'src' => $srcPath ) );
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$dstSha1 = $dst->getFileSha1Base36( array( 'src' => $dstPath ) );
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if ( $srcSha1 && $srcSha1 === $dstSha1 ) {
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$this->output( "Already have $dstPath.\n" );
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continue; // already copied...
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}
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}
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$fsFile = $src->getLocalReference( array( 'src' => $srcPath, 'latest' => 1 ) );
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if ( !$fsFile ) {
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$this->error( "Could not get local copy of $srcPath.", 1 ); // die
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}
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$status = $dst->prepare( array( 'dir' => dirname( $dstPath ) ) );
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$status->merge( $dst->store(
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array( 'src' => $fsFile->getPath(), 'dst' => $dstPath ),
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array( 'nonLocking' => 1, 'nonJournaled' => 1 )
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) );
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if ( !$status->isOK() ) {
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print_r( $status->getErrorsArray() );
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$this->error( "Could not copy $srcPath to $dstPath.", 1 ); // die
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}
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$this->output( "Copied $srcPath to $dstPath.\n" );
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}
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}
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}
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}
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$maintClass = 'CopyFileBackend';
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require_once( RUN_MAINTENANCE_IF_MAIN );
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