maintenance/storage/storageTypeStats.php

   1 <?php
   2 /**
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation; either version 2 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  16  * http://www.gnu.org/copyleft/gpl.html
  17  *
  18  * @file
  19  * @ingroup Maintenance ExternalStorage
  20  */
  21
  22 require_once __DIR__ . '/../Maintenance.php';
  23
  24 class StorageTypeStats extends Maintenance {
  25         function execute() {
  26                 $dbr = $this->getDB( DB_SLAVE );
  27
  28                 $endId = $dbr->selectField( 'text', 'MAX(old_id)', false, __METHOD__ );
  29                 if ( !$endId ) {
  30                         echo "No text rows!\n";
  31                         exit( 1 );
  32                 }
  33
  34                 $binSize = intval( pow( 10, floor( log10( $endId ) ) - 3 ) );
  35                 if ( $binSize < 100 ) {
  36                         $binSize = 100;
  37                 }
  38                 echo "Using bin size of $binSize\n";
  39
  40                 $stats = [];
  41
  42                 $classSql = <<<SQL
  43                         IF(old_flags LIKE '%external%',
  44                                 IF(old_text REGEXP '^DB://[[:alnum:]]+/[0-9]+/[0-9a-f]{32}$',
  45                                         'CGZ pointer',
  46                                         IF(old_text REGEXP '^DB://[[:alnum:]]+/[0-9]+/[0-9]{1,6}$',
  47                                                 'DHB pointer',
  48                                                 IF(old_text REGEXP '^DB://[[:alnum:]]+/[0-9]+$',
  49                                                         'simple pointer',
  50                                                         'UNKNOWN pointer'
  51                                                 )
  52                                         )
  53                                 ),
  54                                 IF(old_flags LIKE '%object%',
  55                                         TRIM('"' FROM SUBSTRING_INDEX(SUBSTRING_INDEX(old_text, ':', 3), ':', -1)),
  56                                         '[none]'
  57                                 )
  58                         )
  59 SQL;
  60
  61                 for ( $rangeStart = 0; $rangeStart < $endId; $rangeStart += $binSize ) {
  62                         if ( $rangeStart / $binSize % 10 == 0 ) {
  63                                 echo "$rangeStart\r";
  64                         }
  65                         $res = $dbr->select(
  66                                 'text',
  67                                 [
  68                                         'old_flags',
  69                                         "$classSql AS class",
  70                                         'COUNT(*) as count',
  71                                 ],
  72                                 [
  73                                         'old_id >= ' . intval( $rangeStart ),
  74                                         'old_id < ' . intval( $rangeStart + $binSize )
  75                                 ],
  76                                 __METHOD__,
  77                                 [ 'GROUP BY' => 'old_flags, class' ]
  78                         );
  79
  80                         foreach ( $res as $row ) {
  81                                 $flags = $row->old_flags;
  82                                 if ( $flags === '' ) {
  83                                         $flags = '[none]';
  84                                 }
  85                                 $class = $row->class;
  86                                 $count = $row->count;
  87                                 if ( !isset( $stats[$flags][$class] ) ) {
  88                                         $stats[$flags][$class] = [
  89                                                 'count' => 0,
  90                                                 'first' => $rangeStart,
  91                                                 'last' => 0
  92                                         ];
  93                                 }
  94                                 $entry =& $stats[$flags][$class];
  95                                 $entry['count'] += $count;
  96                                 $entry['last'] = max( $entry['last'], $rangeStart + $binSize );
  97                                 unset( $entry );
  98                         }
  99                 }
 100                 echo "\n\n";
 101
 102                 $format = "%-29s %-39s %-19s %-29s\n";
 103                 printf( $format, "Flags", "Class", "Count", "old_id range" );
 104                 echo str_repeat( '-', 120 ) . "\n";
 105                 foreach ( $stats as $flags => $flagStats ) {
 106                         foreach ( $flagStats as $class => $entry ) {
 107                                 printf( $format, $flags, $class, $entry['count'],
 108                                         sprintf( "%-13d - %-13d", $entry['first'], $entry['last'] ) );
 109                         }
 110                 }
 111         }
 112 }
 113
 114 $maintClass = 'StorageTypeStats';
 115 require_once RUN_MAINTENANCE_IF_MAIN;