maintenance/postgres/compare_schemas.pl

   1 #!/usr/bin/perl
   2
   3 ## Rough check that the base and postgres "tables.sql" are in sync
   4 ## Should be run from maintenance/postgres
   5
   6 use strict;
   7 use warnings;
   8 use Data::Dumper;
   9
  10 my @old = ("../tables.sql", "../mysql5/tables.sql", "../mysql5/tables-binary.sql");
  11 my $new = "tables.sql";
  12 my @xfile;
  13
  14 ## Read in exceptions and other metadata
  15 my %ok;
  16 while (<DATA>) {
  17         next unless /^(\w+)\s*:\s*([^#]+)/;
  18         my ($name,$val) = ($1,$2);
  19         chomp $val;
  20         if ($name eq 'RENAME') {
  21                 die "Invalid rename\n" unless $val =~ /(\w+)\s+(\w+)/;
  22                 $ok{OLD}{$1} = $2;
  23                 $ok{NEW}{$2} = $1;
  24                 next;
  25         }
  26         if ($name eq 'XFILE') {
  27                 push @xfile, $val;
  28                 next;
  29         }
  30         for (split(/\s+/ => $val)) {
  31                 $ok{$name}{$_} = 0;
  32         }
  33 }
  34
  35 my $datatype = join '|' => qw(
  36 bool
  37 tinyint int bigint real float
  38 tinytext mediumtext text char varchar varbinary
  39 timestamp datetime
  40 tinyblob mediumblob blob
  41 );
  42 $datatype .= q{|ENUM\([\"\w, ]+\)};
  43 $datatype = qr{($datatype)};
  44
  45 my $typeval = qr{(\(\d+\))?};
  46
  47 my $typeval2 = qr{ unsigned| binary| NOT NULL| NULL| auto_increment| default ['\-\d\w"]+| REFERENCES .+CASCADE};
  48
  49 my $indextype = join '|' => qw(INDEX KEY FULLTEXT), "PRIMARY KEY", "UNIQUE INDEX", "UNIQUE KEY";
  50 $indextype = qr{$indextype};
  51
  52 my $engine = qr{TYPE|ENGINE};
  53
  54 my $tabletype = qr{InnoDB|MyISAM|HEAP|HEAP MAX_ROWS=\d+};
  55
  56 my $charset = qr{utf8|binary};
  57
  58 open my $newfh, "<", $new or die qq{Could not open $new: $!\n};
  59
  60
  61 my ($table,%old);
  62
  63 ## Read in the xfiles
  64 my %xinfo;
  65 for my $xfile (@xfile) {
  66         print "Loading $xfile\n";
  67         my $info = &parse_sql($xfile);
  68         for (keys %$info) {
  69                 $xinfo{$_} = $info->{$_};
  70         }
  71 }
  72
  73 for my $oldfile (@old) {
  74         print "Loading $oldfile\n";
  75         my $info = &parse_sql($oldfile);
  76         for (keys %xinfo) {
  77                 $info->{$_} = $xinfo{$_};
  78         }
  79         $old{$oldfile} = $info;
  80 }
  81
  82 sub parse_sql {
  83
  84         my $oldfile = shift;
  85
  86         open my $oldfh, "<", $oldfile or die qq{Could not open $oldfile: $!\n};
  87
  88         my %info;
  89         while (<$oldfh>) {
  90                 next if /^\s*\-\-/ or /^\s+$/;
  91                 s/\s*\-\- [\w ]+$//;
  92                 chomp;
  93
  94                 if (/CREATE\s*TABLE/i) {
  95                         m{^CREATE TABLE /\*\$wgDBprefix\*/(\w+) \($}
  96                                 or die qq{Invalid CREATE TABLE at line $. of $oldfile\n};
  97                         $table = $1;
  98                         $info{$table}{name}=$table;
  99                 }
 100                 elsif (/^\) ($engine)=($tabletype);$/) {
 101                         $info{$table}{engine}=$1;
 102                         $info{$table}{type}=$2;
 103                 }
 104                 elsif (/^\) ($engine)=($tabletype), DEFAULT CHARSET=($charset);$/) {
 105                         $info{$table}{engine}=$1;
 106                         $info{$table}{type}=$2;
 107                         $info{$table}{charset}=$3;
 108                 }
 109                 elsif (/^  (\w+) $datatype$typeval$typeval2{0,3},?$/) {
 110                         $info{$table}{column}{$1} = $2;
 111                 }
 112                 elsif (/^  ($indextype)(?: (\w+))? \(([\w, \(\)]+)\),?$/) {
 113                         $info{$table}{lc $1."_name"} = $2 ? $2 : "";
 114                         $info{$table}{lc $1."pk_target"} = $3;
 115                 }
 116                 else {
 117                         die "Cannot parse line $. of $oldfile:\n$_\n";
 118                 }
 119
 120         }
 121         close $oldfh;
 122
 123         return \%info;
 124
 125 } ## end of parse_sql
 126
 127 for my $oldfile (@old) {
 128
 129 ## Begin non-standard indent
 130
 131 ## MySQL sanity checks
 132 for my $table (sort keys %{$old{$oldfile}}) {
 133         my $t = $old{$oldfile}{$table};
 134         if (($oldfile =~ /5/ and $t->{engine} ne 'ENGINE')
 135                 or
 136                 ($oldfile !~ /5/ and $t->{engine} ne 'TYPE')) {
 137                 die "Invalid engine for $oldfile: $t->{engine}\n" unless $t->{name} eq 'profiling';
 138         }
 139         my $charset = $t->{charset} || '';
 140         if ($oldfile !~ /binary/ and $charset eq 'binary') {
 141                 die "Invalid charset for $oldfile: $charset\n";
 142         }
 143 }
 144
 145 my $dtype = join '|' => qw(
 146 SMALLINT INTEGER BIGINT NUMERIC SERIAL
 147 TEXT CHAR VARCHAR
 148 BYTEA
 149 TIMESTAMPTZ
 150 CIDR
 151 );
 152 $dtype = qr{($dtype)};
 153 my %new;
 154 my ($infunction,$inview,$inrule) = (0,0,0);
 155 seek $newfh, 0, 0;
 156 while (<$newfh>) {
 157         next if /^\s*\-\-/ or /^\s*$/;
 158         s/\s*\-\- [\w ']+$//;
 159         next if /^BEGIN;/ or /^SET / or /^COMMIT;/;
 160         next if /^CREATE SEQUENCE/;
 161         next if /^CREATE(?: UNIQUE)? INDEX/;
 162         next if /^CREATE FUNCTION/;
 163         next if /^CREATE TRIGGER/ or /^  FOR EACH ROW/;
 164         next if /^INSERT INTO/ or /^  VALUES \(/;
 165         next if /^ALTER TABLE/;
 166         chomp;
 167
 168         if (/^\$mw\$;?$/) {
 169                 $infunction = $infunction ? 0 : 1;
 170                 next;
 171         }
 172         next if $infunction;
 173
 174         next if /^CREATE VIEW/ and $inview = 1;
 175         if ($inview) {
 176                 /;$/ and $inview = 0;
 177                 next;
 178         }
 179
 180         next if /^CREATE RULE/ and $inrule = 1;
 181         if ($inrule) {
 182                 /;$/ and $inrule = 0;
 183                 next;
 184         }
 185
 186         if (/^CREATE TABLE "?(\w+)"? \($/) {
 187                 $table = $1;
 188                 $new{$table}{name}=$table;
 189         }
 190         elsif (/^\);$/) {
 191         }
 192         elsif (/^  (\w+) +$dtype/) {
 193                 $new{$table}{column}{$1} = $2;
 194         }
 195         else {
 196                 die "Cannot parse line $. of $new:\n$_\n";
 197         }
 198 }
 199
 200 ## Old but not new
 201 for my $t (sort keys %{$old{$oldfile}}) {
 202         if (!exists $new{$t} and !exists $ok{OLD}{$t}) {
 203                 print "Table not in $new: $t\n";
 204                 next;
 205         }
 206         next if exists $ok{OLD}{$t} and !$ok{OLD}{$t};
 207         my $newt = exists $ok{OLD}{$t} ? $ok{OLD}{$t} : $t;
 208         my $oldcol = $old{$oldfile}{$t}{column};
 209         my $newcol = $new{$newt}{column};
 210         for my $c (keys %$oldcol) {
 211                 if (!exists $newcol->{$c}) {
 212                         print "Column $t.$c not in $new\n";
 213                         next;
 214                 }
 215         }
 216         for my $c (keys %$newcol) {
 217                 if (!exists $oldcol->{$c}) {
 218                         print "Column $t.$c not in $oldfile\n";
 219                         next;
 220                 }
 221         }
 222 }
 223 ## New but not old:
 224 for (sort keys %new) {
 225         if (!exists $old{$oldfile}{$_} and !exists $ok{NEW}{$_}) {
 226                 print "Not in $oldfile: $_\n";
 227                 next;
 228         }
 229 }
 230
 231
 232 } ## end each file to be parsed
 233
 234
 235 __DATA__
 236 ## Known exceptions
 237 OLD: searchindex          ## We use tsearch2 directly on the page table instead
 238 OLD: archive              ## This is a view due to the char(14) timestamp hack
 239 RENAME: user mwuser       ## Reserved word causing lots of problems
 240 RENAME: text pagecontent  ## Reserved word
 241 NEW: archive2             ## The real archive table
 242 NEW: mediawiki_version    ## Just us, for now
 243 XFILE: ../archives/patch-profiling.sql