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storageTypeStats.php
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1<?php
22// @codeCoverageIgnoreStart
23require_once __DIR__ . '/../Maintenance.php';
24// @codeCoverageIgnoreEnd
25
26class StorageTypeStats extends Maintenance {
27 public function execute() {
28 $dbr = $this->getReplicaDB();
29
30 $endId = $dbr->newSelectQueryBuilder()
31 ->select( 'MAX(old_id)' )
32 ->from( 'text' )
33 ->caller( __METHOD__ )->fetchField();
34 if ( !$endId ) {
35 $this->fatalError( 'No text rows!' );
36 }
37
38 $binSize = intval( 10 ** ( floor( log10( $endId ) ) - 3 ) );
39 if ( $binSize < 100 ) {
40 $binSize = 100;
41 }
42 echo "Using bin size of $binSize\n";
43
44 $stats = [];
45
46 $classSql = <<<SQL
47 IF(old_flags LIKE '%external%',
48 IF(old_text REGEXP '^DB://[[:alnum:]]+/[0-9]+/[0-9a-f]{32}$',
49 'CGZ pointer',
50 IF(old_text REGEXP '^DB://[[:alnum:]]+/[0-9]+/[0-9]{1,6}$',
51 'DHB pointer',
52 IF(old_text REGEXP '^DB://[[:alnum:]]+/[0-9]+$',
53 'simple pointer',
54 'UNKNOWN pointer'
55 )
56 )
57 ),
58 IF(old_flags LIKE '%object%',
59 TRIM('"' FROM SUBSTRING_INDEX(SUBSTRING_INDEX(old_text, ':', 3), ':', -1)),
60 '[none]'
61 )
62 )
63SQL;
64
65 for ( $rangeStart = 0; $rangeStart < $endId; $rangeStart += $binSize ) {
66 if ( $rangeStart / $binSize % 10 == 0 ) {
67 echo "$rangeStart\r";
68 }
69 $res = $dbr->newSelectQueryBuilder()
70 ->select( [ 'old_flags', 'class' => $classSql, 'count' => 'COUNT(*)' ] )
71 ->from( 'text' )
72 ->where( $dbr->expr( 'old_id', '>=', intval( $rangeStart ) ) )
73 ->andWhere( $dbr->expr( 'old_id', '<', intval( $rangeStart + $binSize ) ) )
74 ->groupBy( [ 'old_flags', 'class' ] )
75 ->caller( __METHOD__ )->fetchResultSet();
76
77 foreach ( $res as $row ) {
78 $flags = $row->old_flags;
79 if ( $flags === '' ) {
80 $flags = '[none]';
81 }
82 $class = $row->class;
83 $count = $row->count;
84 // @phan-suppress-next-line PhanImpossibleConditionInLoop,PhanPossiblyUndeclaredVariable False positive
85 if ( !isset( $stats[$flags][$class] ) ) {
86 $stats[$flags][$class] = [
87 'count' => 0,
88 'first' => $rangeStart,
89 'last' => 0
90 ];
91 }
92 $entry =& $stats[$flags][$class];
93 $entry['count'] += $count;
94 $entry['last'] = max( $entry['last'], $rangeStart + $binSize );
95 unset( $entry );
96 }
97 }
98 echo "\n\n";
99
100 $format = "%-29s %-39s %-19s %-29s\n";
101 printf( $format, "Flags", "Class", "Count", "old_id range" );
102 echo str_repeat( '-', 120 ) . "\n";
103 foreach ( $stats as $flags => $flagStats ) {
104 foreach ( $flagStats as $class => $entry ) {
105 printf( $format, $flags, $class, $entry['count'],
106 sprintf( "%-13d - %-13d", $entry['first'], $entry['last'] ) );
107 }
108 }
109 }
110}
111
112// @codeCoverageIgnoreStart
113$maintClass = StorageTypeStats::class;
114require_once RUN_MAINTENANCE_IF_MAIN;
115// @codeCoverageIgnoreEnd