| 1 |
#!/usr/bin/perl -w |
| 2 |
|
| 3 |
# Compare data in two different databases |
| 4 |
# |
| 5 |
# 2003-08-07 Dobrica Pavlinusic |
| 6 |
# |
| 7 |
# somewhat based on ides from |
| 8 |
# DataDiff 0.1 by Jon D. Frisby, http://www.mrjoy.com |
| 9 |
|
| 10 |
use strict; |
| 11 |
use Getopt::Long; |
| 12 |
use DBI; |
| 13 |
use Data::Dumper; |
| 14 |
use Pg::Scheme; |
| 15 |
|
| 16 |
$| = 1; |
| 17 |
|
| 18 |
my ($debug,$verbose) = (0,0); |
| 19 |
my ($help,$masterhost,$masterport,$masteruser,$masterpassword, |
| 20 |
$slavehost,$slaveport,$slaveuser,$slavepassword, |
| 21 |
$masterfile, |
| 22 |
$slavefile, |
| 23 |
); |
| 24 |
my $tables; |
| 25 |
|
| 26 |
my $result = GetOptions( |
| 27 |
"debug!" => \$debug, "verbose!" => \$verbose, "help" => \$help, |
| 28 |
"masterhost=s" => \$masterhost, "masterport=i" => \$masterport, |
| 29 |
"masteruser=s" => \$masteruser, "masterpassword=s" => \$masterpassword, |
| 30 |
"masterfile=s" => \$masterfile, |
| 31 |
"slavehost=s" => \$slavehost, "slaveport=i" => \$slaveport, |
| 32 |
"slaveuser=s" => \$slaveuser, "slavepassword=s" => \$slavepassword, |
| 33 |
"slavefile=s" => \$slavefile, |
| 34 |
"tables=s" => \$tables, |
| 35 |
); |
| 36 |
|
| 37 |
if (defined($help) || (scalar(@ARGV) < 2)) { |
| 38 |
print "Usage: $0 [options] masterdb slavedb |
| 39 |
Options: |
| 40 |
--masterhost=hostname --masterport=port |
| 41 |
--masteruser=username --masterpassword=string |
| 42 |
--masterfile=filename |
| 43 |
--slavehost=hostname --slaveport=port |
| 44 |
--slaveuser=username --slavepassword=string |
| 45 |
--slavefile=filename |
| 46 |
--tables[s]=table[,table...] |
| 47 |
"; |
| 48 |
# exit ((scalar(@ARGV) < 2)? 1:0); |
| 49 |
exit; |
| 50 |
} |
| 51 |
|
| 52 |
my $master = $ARGV[0] || "master"; |
| 53 |
my $slave = $ARGV[1] || "slave"; |
| 54 |
|
| 55 |
my $minfo = "dbname=$master"; |
| 56 |
$minfo = "$minfo host=$masterhost" if (defined($masterhost)); |
| 57 |
$minfo = "$minfo port=$masterport" if (defined($masterport)); |
| 58 |
|
| 59 |
my $sinfo = "dbname=$slave"; |
| 60 |
$sinfo = "$sinfo host=$slavehost" if (defined($slavehost)); |
| 61 |
$sinfo = "$sinfo port=$slaveport" if (defined($slaveport)); |
| 62 |
|
| 63 |
print "Master connection is $minfo\n" if ($debug); |
| 64 |
print "Slave connection is $sinfo\n" if ($debug); |
| 65 |
|
| 66 |
my $mdbh = DBI->connect("DBI:Pg:$minfo", $masteruser, $masterpassword, { PrintError => 0 } ); |
| 67 |
if (! $mdbh) { |
| 68 |
print "Can't connect to master database $master"; |
| 69 |
print "on $masterhost" if ($masterhost); |
| 70 |
print "\n"; |
| 71 |
exit 1; |
| 72 |
} |
| 73 |
my $sdbh = DBI->connect("DBI:Pg:$sinfo", $slaveuser, $slavepassword, { PrintError => 0 }); |
| 74 |
if (! $sdbh) { |
| 75 |
print "Can't connect to slave database $slave"; |
| 76 |
print "on $slavehost" if ($slavehost); |
| 77 |
print "\n"; |
| 78 |
exit 1; |
| 79 |
} |
| 80 |
|
| 81 |
my ($diff_shema,$diff_data) = (0,0); |
| 82 |
|
| 83 |
my $sql; |
| 84 |
|
| 85 |
sub debug_sql { |
| 86 |
return if (! $debug); |
| 87 |
my $sql = shift; |
| 88 |
$sql =~ s/[\n\r]/ /gs; |
| 89 |
$sql =~ s/\s\s+/ /g; |
| 90 |
print STDERR "DEBUG: SQL: $sql\n"; |
| 91 |
} |
| 92 |
|
| 93 |
sub debug_row { |
| 94 |
return if (! $debug); |
| 95 |
my $row = shift; |
| 96 |
my @cols = @_; |
| 97 |
if (! $row) { |
| 98 |
print STDERR "DEBUG: ROW data is undef!\n"; |
| 99 |
return; |
| 100 |
} |
| 101 |
print STDERR "DEBUG: ROW: [",$#cols+1,"] "; |
| 102 |
foreach my $col (@cols) { |
| 103 |
print STDERR "$col:"; |
| 104 |
if ($row->{$col}) { |
| 105 |
print $row->{$col}; |
| 106 |
} else { |
| 107 |
print "null"; |
| 108 |
} |
| 109 |
print " "; |
| 110 |
} |
| 111 |
print STDERR "\n"; |
| 112 |
} |
| 113 |
|
| 114 |
sub debug { |
| 115 |
return if (!$debug); |
| 116 |
print STDERR "DEBUG: ",@_; |
| 117 |
} |
| 118 |
|
| 119 |
$verbose = 1 if ($debug); |
| 120 |
|
| 121 |
# init object for scheme in master database |
| 122 |
my $mscheme = new Pg::Scheme( 'dbh' => $mdbh, 'DEBUG' => 0 ) || die "can't query schema"; |
| 123 |
|
| 124 |
# which tables to compare? |
| 125 |
|
| 126 |
my @tables = $mscheme->list_tables($tables); |
| 127 |
|
| 128 |
debug "Comparing tables: ".join(", ",@tables)."\n"; |
| 129 |
|
| 130 |
my $cols; |
| 131 |
my $diff_total = 0; |
| 132 |
|
| 133 |
foreach my $table (@tables) { |
| 134 |
|
| 135 |
my $sth; |
| 136 |
|
| 137 |
# diff schema |
| 138 |
|
| 139 |
# all colums (for insert) |
| 140 |
my @cols = @{$mscheme->cols($table)}; |
| 141 |
|
| 142 |
# colums compared by a=b |
| 143 |
my @cols_notnull = @{$mscheme->cols_notnull($table)}; |
| 144 |
|
| 145 |
# colums compared by a=b or a is null and b is null |
| 146 |
my @cols_null = @{$mscheme->cols_null($table)}; |
| 147 |
|
| 148 |
# primary key columns |
| 149 |
my @cols_pk = @{$mscheme->cols_pk($table)}; |
| 150 |
|
| 151 |
# columns to compare (not in primary key) |
| 152 |
my @cols_cmp = @{$mscheme->cols_notpk($table)}; |
| 153 |
|
| 154 |
my @cols_skip; # skipped columns |
| 155 |
my @cols_test; # all colums to test (without skipped) |
| 156 |
|
| 157 |
foreach my $row (@{$mscheme->pg_attribute($table)}) { |
| 158 |
# attname | format_type | attnotnull | atthasdef | attnum |
| 159 |
|
| 160 |
# FIXME: do something with attributes which shouldn't be compared |
| 161 |
# (date, time, datetime, timestamp) |
| 162 |
if ($row->{format_type} =~ /(date)|(time)/i) { |
| 163 |
push @cols_skip,$row->{attname}; |
| 164 |
} else { |
| 165 |
push @cols_test,$row->{attname}; |
| 166 |
} |
| 167 |
|
| 168 |
} |
| 169 |
|
| 170 |
if ($debug) { |
| 171 |
print STDERR "DEBUG: table $table not null cols: (",join(", ",@cols_notnull),")"; |
| 172 |
print STDERR " - null cols: (",join(", ",@cols_null),")" if (@cols_null); |
| 173 |
print STDERR " - skip cols: (",join(", ",@cols_skip),")" if (@cols_skip); |
| 174 |
print STDERR "\n"; |
| 175 |
} |
| 176 |
|
| 177 |
# diff data |
| 178 |
|
| 179 |
if (! @cols_pk) { |
| 180 |
print STDERR "can't find PK rows for table '$table' using all\n"; |
| 181 |
@cols_pk = @cols; |
| 182 |
} |
| 183 |
|
| 184 |
|
| 185 |
if ($verbose) { |
| 186 |
print "table '$table' using for key: (",join(", ",@cols_pk),") to compare cols: (",join(", ",@cols_cmp),")\n"; |
| 187 |
} |
| 188 |
|
| 189 |
# diff data |
| 190 |
|
| 191 |
my $msql = "select ".join(",",@cols)." from $table"; |
| 192 |
my $ssql = $msql; |
| 193 |
|
| 194 |
sub sql_where { |
| 195 |
my @cols = @_; |
| 196 |
my $and = ""; |
| 197 |
my $where = " where "; |
| 198 |
foreach my $col (@cols) { |
| 199 |
$where .= "$and$col=?"; |
| 200 |
$and = " and "; |
| 201 |
} |
| 202 |
return $where; |
| 203 |
} |
| 204 |
|
| 205 |
sub sql_order { |
| 206 |
my @cols = @_; |
| 207 |
my $order = " order by "; |
| 208 |
my $comma = ""; |
| 209 |
foreach my $col (@cols) { |
| 210 |
$order .= "$comma$col asc"; |
| 211 |
$comma = ", "; |
| 212 |
} |
| 213 |
return $order; |
| 214 |
} |
| 215 |
|
| 216 |
my $order = sql_order(@cols_pk); |
| 217 |
$msql .= $order; |
| 218 |
$ssql .= $order; |
| 219 |
|
| 220 |
debug_sql($msql); |
| 221 |
|
| 222 |
my $msth = $mdbh->prepare($msql) || die; |
| 223 |
$msth->execute() || die; |
| 224 |
|
| 225 |
my $ssth = $sdbh->prepare($ssql) || die; |
| 226 |
$ssth->execute() || die; |
| 227 |
|
| 228 |
my $diff_row = 0; |
| 229 |
|
| 230 |
my ($mrow,$srow); |
| 231 |
# have_* |
| 232 |
use constant NO_ROW => 0; |
| 233 |
use constant FETCH_ROW => 1; |
| 234 |
use constant HAVE_ROW => 2; |
| 235 |
my ($have_mrow,$have_srow) = (FETCH_ROW,FETCH_ROW); |
| 236 |
|
| 237 |
while ($have_mrow != NO_ROW || $have_srow != NO_ROW) { |
| 238 |
|
| 239 |
debug "have mrow: $have_mrow srow: $have_srow\n"; |
| 240 |
|
| 241 |
sub pk_val { |
| 242 |
my $row = shift || die "need row"; |
| 243 |
my @cols = shift || die "need cols"; |
| 244 |
my @val; |
| 245 |
foreach my $col (@cols) { |
| 246 |
push @val,$row->{$col}; |
| 247 |
} |
| 248 |
return @val; |
| 249 |
} |
| 250 |
|
| 251 |
# fetch row from master |
| 252 |
if ($have_mrow == FETCH_ROW) { |
| 253 |
debug "fetch row from master: $msql\n"; |
| 254 |
$mrow = $msth->fetchrow_hashref(); |
| 255 |
debug_row($mrow,@cols); |
| 256 |
|
| 257 |
if ($mrow) { |
| 258 |
# fill-in primary key values |
| 259 |
$have_mrow = HAVE_ROW; |
| 260 |
} else { |
| 261 |
$have_mrow = NO_ROW; |
| 262 |
} |
| 263 |
} |
| 264 |
|
| 265 |
# fetch row from slave |
| 266 |
if ($have_srow == FETCH_ROW) { |
| 267 |
debug "fetch row from slave: $ssql\n"; |
| 268 |
$srow = $ssth->fetchrow_hashref(); |
| 269 |
debug_row($srow,@cols); |
| 270 |
if ($srow) { |
| 271 |
$have_srow = HAVE_ROW; |
| 272 |
} else { |
| 273 |
$have_srow = NO_ROW; |
| 274 |
} |
| 275 |
} |
| 276 |
|
| 277 |
debug "have mrow: $have_mrow srow: $have_srow\n"; |
| 278 |
|
| 279 |
# insert into slave database |
| 280 |
sub sql_insert { |
| 281 |
my $dbh = shift @_ || die "need dbh"; |
| 282 |
my $table = shift @_ || die "need table as argument"; |
| 283 |
my $row = shift @_ || die "need row data"; |
| 284 |
my @cols = @_; |
| 285 |
|
| 286 |
my $sql = "insert into $table (".join(",",@cols).") values ("; |
| 287 |
my $comma = ""; |
| 288 |
foreach my $col (@cols) { |
| 289 |
$sql .= $comma.$dbh->quote($row->{$col}); |
| 290 |
$comma = ","; |
| 291 |
} |
| 292 |
$sql.=")"; |
| 293 |
debug_sql($sql); |
| 294 |
return $sql; |
| 295 |
} |
| 296 |
|
| 297 |
# delete from slave database |
| 298 |
sub sql_delete { |
| 299 |
my $dbh = shift @_ || die "need dbh"; |
| 300 |
my $table = shift @_ || die "need table as argument"; |
| 301 |
my $row = shift @_ || die "need row as argument"; |
| 302 |
my @cols_pk = @_; |
| 303 |
|
| 304 |
my $where = sql_where(@cols_pk); |
| 305 |
|
| 306 |
my $sql = "delete from $table"; |
| 307 |
foreach my $col (@cols_pk) { |
| 308 |
my $val = $dbh->quote($row->{$col}) || die "can't find value in row for col $col"; |
| 309 |
$where =~ s/\?/$val/; |
| 310 |
} |
| 311 |
$sql .= $where; |
| 312 |
debug_sql($sql); |
| 313 |
return $sql; |
| 314 |
} |
| 315 |
|
| 316 |
# update row in slave database |
| 317 |
sub sql_update { |
| 318 |
my $dbh = shift @_ || die "need dbh"; |
| 319 |
my $table = shift @_ || die "need table as argument"; |
| 320 |
my $col = shift @_ || die "need col to update"; |
| 321 |
my $row = shift @_ || die "need row"; |
| 322 |
my @cols_pk = @_; |
| 323 |
|
| 324 |
my $sql = "update $table set $col=".$dbh->quote($row->{$col}); |
| 325 |
my $where = sql_where(@cols_pk); |
| 326 |
foreach my $col (@cols_pk) { |
| 327 |
my $val = $dbh->quote($row->{$col}) || die "can't find value in row for col $col"; |
| 328 |
$where =~ s/\?/$val/; |
| 329 |
} |
| 330 |
$sql .= $where; |
| 331 |
debug_sql($sql); |
| 332 |
return $sql; |
| 333 |
} |
| 334 |
# master slave |
| 335 |
# 1 = 1 test |
| 336 |
# 1 < 2 insert mrow |
| 337 |
# 2 > 1 delete srow |
| 338 |
# 1 = undef insert mrow |
| 339 |
# undef = 1 delete srow |
| 340 |
|
| 341 |
my $pk_same = 1; |
| 342 |
|
| 343 |
# check key cols for row |
| 344 |
foreach my $col (@cols_pk) { |
| 345 |
if ( ($have_mrow == NO_ROW && $have_srow == HAVE_ROW) || |
| 346 |
($have_mrow == HAVE_ROW && $have_srow == HAVE_ROW && $mrow->{$col} gt $srow->{$col}) ) { |
| 347 |
$diff_row++; |
| 348 |
$pk_same = 0; |
| 349 |
print STDERR "EXTRA row in table '$table' pk: [".join(",",@cols_pk)."] value (".join(",",pk_val($srow,@cols_pk)).")\n" if ($verbose); |
| 350 |
print sql_delete($sdbh,$table,$srow,@cols_pk),";\n"; |
| 351 |
$have_srow = FETCH_ROW; |
| 352 |
last; |
| 353 |
} elsif ( ($have_mrow == HAVE_ROW && $have_srow == NO_ROW) || |
| 354 |
($have_mrow == HAVE_ROW && $have_srow == HAVE_ROW && $mrow->{$col} lt $srow->{$col}) ) { |
| 355 |
$diff_row++; |
| 356 |
$pk_same = 0; |
| 357 |
print STDERR "MISSING row in table '$table' pk: [".join(",",@cols_pk)."] value (".join(",",pk_val($mrow,@cols_pk)).")\n" if ($verbose); |
| 358 |
print sql_insert($mdbh,$table,$mrow,@cols),";\n"; |
| 359 |
$have_mrow = FETCH_ROW; |
| 360 |
last; |
| 361 |
} |
| 362 |
} |
| 363 |
|
| 364 |
if ($pk_same && $have_mrow == HAVE_ROW && $have_srow == HAVE_ROW) { |
| 365 |
# check non-key cols for row |
| 366 |
foreach my $col (@cols_cmp) { |
| 367 |
if ($mrow->{$col} ne $srow->{$col}) { |
| 368 |
$diff_row++; |
| 369 |
print STDERR "DIFF in table '$table' row ($col): [".join(",",@cols_pk)."] '$mrow->{$col}' != '$srow->{$col}'\n" if ($verbose); |
| 370 |
print sql_update($mdbh,$table,$col,$mrow,@cols_pk),";\n"; |
| 371 |
} |
| 372 |
} |
| 373 |
$have_mrow = FETCH_ROW; |
| 374 |
$have_srow = FETCH_ROW; |
| 375 |
} |
| 376 |
} |
| 377 |
|
| 378 |
print STDERR "$diff_row differences in table $table\n" if ($verbose && $diff_row > 0); |
| 379 |
$diff_total += $diff_row; |
| 380 |
} |
| 381 |
|
| 382 |
if ($verbose) { |
| 383 |
if ($diff_total == 0) { |
| 384 |
print STDERR "databases are same"; |
| 385 |
} elsif ($diff_total > 0) { |
| 386 |
print STDERR "$diff_total differences in all tables\n"; |
| 387 |
} else { |
| 388 |
die "this shouldn't happend. please report a bug!"; |
| 389 |
} |
| 390 |
} |
| 391 |
|
| 392 |
$mdbh->disconnect(); |
| 393 |
$sdbh->disconnect(); |
Parent Directory
| 
Revision Log