| 1 |
dpavlin |
1.1 |
# -*- perl -*- |
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# RServ.pm |
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# Vadim Mikheev, (c) 2000, PostgreSQL Inc. |
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package RServ; |
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require Exporter; |
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@ISA = qw(Exporter); |
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@EXPORT = qw(PrepareSnapshot ApplySnapshot GetSyncID SyncSyncID CleanLog); |
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@EXPORT_OK = qw(); |
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use Pg; |
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$debug = 0; |
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$quiet = 1; |
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my %Mtables = (); |
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my %Stables = (); |
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sub PrepareSnapshot |
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{ |
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my ($conn, $outf, $server) = @_; # (@_[0], @_[1], @_[2]); |
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my $result = $conn->exec("BEGIN"); |
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if ($result->resultStatus ne PGRES_COMMAND_OK) |
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{ |
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print STDERR $conn->errorMessage unless ($quiet); |
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$conn->exec("ROLLBACK"); |
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return(-1); |
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} |
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$result = $conn->exec("set transaction isolation level serializable"); |
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if ($result->resultStatus ne PGRES_COMMAND_OK) |
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{ |
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print STDERR $conn->errorMessage unless ($quiet); |
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$conn->exec("ROLLBACK"); |
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return(-1); |
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} |
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# MAP oid --> tabname, keyname |
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$result = $conn->exec("select pgc.oid, pgc.relname, pga.attname" . |
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" from _RSERV_TABLES_ rt, pg_class pgc, pg_attribute pga" . |
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" where pgc.oid = rt.reloid and pga.attrelid = rt.reloid" . |
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" and pga.attnum = rt.key"); |
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if ($result->resultStatus ne PGRES_TUPLES_OK) |
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{ |
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print STDERR $conn->errorMessage unless ($quiet); |
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$conn->exec("ROLLBACK"); |
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return(-1); |
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} |
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my @row; |
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while (@row = $result->fetchrow) |
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{ |
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# printf "$row[0], $row[1], $row[2]\n"; |
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push @{$Mtables{$row[0]}}, $row[1], $row[2]; |
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} |
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# Read last succeeded sync |
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$sql = "select syncid, synctime, minid, maxid, active from _RSERV_SYNC_" . |
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" where server = $server and syncid = (select max(syncid) from" . |
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" _RSERV_SYNC_ where server = $server and status > 0)"; |
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printf "$sql\n" if $debug; |
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$result = $conn->exec($sql); |
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if ($result->resultStatus ne PGRES_TUPLES_OK) |
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{ |
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print STDERR $conn->errorMessage unless ($quiet); |
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$conn->exec("ROLLBACK"); |
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return(-1); |
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} |
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my @lastsync = $result->fetchrow; |
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my $sinfo = ""; |
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if ($lastsync[3] ne '') # sync info |
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{ |
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$sinfo = "and (l.logid >= $lastsync[3]"; |
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$sinfo .= " or l.logid in ($lastsync[4])" if $lastsync[4] ne ''; |
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$sinfo .= ")"; |
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} |
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my $havedeal = 0; |
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# DELETED rows |
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$sql = "select l.reloid, l.key from _RSERV_LOG_ l" . |
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" where l.deleted = 1 $sinfo order by l.reloid"; |
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printf "$sql\n" if $debug; |
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$result = $conn->exec($sql); |
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if ($result->resultStatus ne PGRES_TUPLES_OK) |
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{ |
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print STDERR $conn->errorMessage unless ($quiet); |
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$conn->exec("ROLLBACK"); |
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return(-1); |
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} |
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$lastoid = ''; |
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while (@row = $result->fetchrow) |
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{ |
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next unless exists $Mtables{$row[0]}; |
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if ($lastoid != $row[0]) |
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{ |
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if ($lastoid eq '') |
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{ |
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my $syncid = GetSYNCID($conn, $outf); |
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return($syncid) if $syncid < 0; |
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$havedeal = 1; |
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} |
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else |
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{ |
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printf $outf "\\.\n"; |
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} |
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printf $outf "-- DELETE $Mtables{$row[0]}[0]\n"; |
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$lastoid = $row[0]; |
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} |
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if (! defined $row[1]) |
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{ |
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print STDERR "NULL key\n" unless ($quiet); |
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$conn->exec("ROLLBACK"); |
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return(-2); |
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} |
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printf $outf "%s\n", OutputValue($row[1]); |
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} |
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printf $outf "\\.\n" if $lastoid ne ''; |
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# UPDATED rows |
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my ($taboid, $tabname, $tabkey); |
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foreach $taboid (keys %Mtables) |
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{ |
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($tabname, $tabkey) = @{$Mtables{$taboid}}; |
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my $oidkey = ($tabkey eq 'oid') ? "_$tabname.oid," : ''; |
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$sql = sprintf "select $oidkey _$tabname.* from _RSERV_LOG_ l," . |
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" $tabname _$tabname where l.reloid = $taboid and l.deleted = 0 $sinfo" . |
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" and l.key = _$tabname.${tabkey}::text"; |
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printf "$sql\n" if $debug; |
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$result = $conn->exec($sql); |
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if ($result->resultStatus ne PGRES_TUPLES_OK) |
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{ |
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printf $outf "-- ERROR\n" if $havedeal; |
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print STDERR $conn->errorMessage unless ($quiet); |
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$conn->exec("ROLLBACK"); |
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return(-1); |
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} |
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next if $result->ntuples <= 0; |
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if (! $havedeal) |
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{ |
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my $syncid = GetSYNCID($conn, $outf); |
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return($syncid) if $syncid < 0; |
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$havedeal = 1; |
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} |
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printf $outf "-- UPDATE $tabname\n"; |
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while (@row = $result->fetchrow) |
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{ |
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for ($i = 0; $i <= $#row; $i++) |
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{ |
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printf $outf " " if $i; |
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printf $outf "%s", OutputValue($row[$i]); |
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} |
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printf $outf "\n"; |
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} |
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printf $outf "\\.\n"; |
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} |
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unless ($havedeal) |
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{ |
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$conn->exec("ROLLBACK"); |
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return(0); |
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} |
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# Remember this snapshot info |
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$result = $conn->exec("select _rserv_sync_($server)"); |
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if ($result->resultStatus ne PGRES_TUPLES_OK) |
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{ |
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printf $outf "-- ERROR\n"; |
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print STDERR $conn->errorMessage unless ($quiet); |
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$conn->exec("ROLLBACK"); |
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return(-1); |
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} |
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$result = $conn->exec("COMMIT"); |
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if ($result->resultStatus ne PGRES_COMMAND_OK) |
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{ |
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printf $outf "-- ERROR\n"; |
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print STDERR $conn->errorMessage unless ($quiet); |
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$conn->exec("ROLLBACK"); |
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return(-1); |
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} |
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printf $outf "-- OK\n"; |
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return(1); |
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} |
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sub OutputValue |
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{ |
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my ($val) = @_; # @_[0]; |
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return("\\N") unless defined $val; |
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$val =~ s/\\/\\\\/g; |
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$val =~ s/ /\\011/g; |
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$val =~ s/\n/\\012/g; |
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$val =~ s/\'/\\047/g; |
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return($val); |
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} |
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# Get syncid for new snapshot |
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sub GetSYNCID |
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{ |
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my ($conn, $outf) = @_; # (@_[0], @_[1]); |
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my $result = $conn->exec("select nextval('_rserv_sync_seq_')"); |
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if ($result->resultStatus ne PGRES_TUPLES_OK) |
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{ |
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print STDERR $conn->errorMessage unless ($quiet); |
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$conn->exec("ROLLBACK"); |
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return(-1); |
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} |
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my @row = $result->fetchrow; |
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printf $outf "-- SYNCID $row[0]\n"; |
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return($row[0]); |
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} |
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sub CleanLog |
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{ |
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my ($conn, $howold) = @_; # (@_[0], @_[1]); |
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my $result = $conn->exec("BEGIN"); |
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if ($result->resultStatus ne PGRES_COMMAND_OK) |
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{ |
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print STDERR $conn->errorMessage unless ($quiet); |
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$conn->exec("ROLLBACK"); |
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return(-1); |
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} |
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my $sql = "select rs.maxid, rs.active from _RSERV_SYNC_ rs" . |
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" where rs.syncid = (select max(rs2.syncid) from _RSERV_SYNC_ rs2" . |
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" where rs2.server = rs.server and rs2.status > 0) order by rs.maxid"; |
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printf "$sql\n" if $debug; |
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$result = $conn->exec($sql); |
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if ($result->resultStatus ne PGRES_TUPLES_OK) |
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{ |
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print STDERR $conn->errorMessage unless ($quiet); |
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return(-1); |
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} |
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my $maxid = ''; |
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my %active = (); |
| 259 |
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while (my @row = $result->fetchrow) |
| 260 |
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{ |
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$maxid = $row[0] if $maxid eq ''; |
| 262 |
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last if $row[0] > $maxid; |
| 263 |
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my @ids = split(/[ ]+,[ ]+/, $row[1]); |
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foreach $aid (@ids) |
| 265 |
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{ |
| 266 |
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$active{$aid} = 1 unless exists $active{$aid}; |
| 267 |
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} |
| 268 |
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} |
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if ($maxid eq '') |
| 270 |
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{ |
| 271 |
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print STDERR "No Sync IDs\n" unless ($quiet); |
| 272 |
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return(0); |
| 273 |
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} |
| 274 |
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my $alist = join(',', keys %active); |
| 275 |
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my $sinfo = "logid < $maxid"; |
| 276 |
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$sinfo .= " and logid not in ($alist)" if $alist ne ''; |
| 277 |
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| 278 |
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$sql = "delete from _RSERV_LOG_ where " . |
| 279 |
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"logtime < now() - '$howold second'::interval and $sinfo"; |
| 280 |
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| 281 |
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printf "$sql\n" if $debug; |
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| 283 |
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$result = $conn->exec($sql); |
| 284 |
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if ($result->resultStatus ne PGRES_COMMAND_OK) |
| 285 |
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{ |
| 286 |
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print STDERR $conn->errorMessage unless ($quiet); |
| 287 |
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$conn->exec("ROLLBACK"); |
| 288 |
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return(-1); |
| 289 |
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} |
| 290 |
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$maxid = $result->cmdTuples; |
| 291 |
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| 292 |
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$result = $conn->exec("COMMIT"); |
| 293 |
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if ($result->resultStatus ne PGRES_COMMAND_OK) |
| 294 |
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{ |
| 295 |
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print STDERR $conn->errorMessage unless ($quiet); |
| 296 |
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$conn->exec("ROLLBACK"); |
| 297 |
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return(-1); |
| 298 |
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} |
| 299 |
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| 300 |
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return($maxid); |
| 301 |
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} |
| 302 |
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| 303 |
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sub ApplySnapshot |
| 304 |
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{ |
| 305 |
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my ($conn, $inpf) = @_; # (@_[0], @_[1]); |
| 306 |
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| 307 |
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my $result = $conn->exec("BEGIN"); |
| 308 |
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if ($result->resultStatus ne PGRES_COMMAND_OK) |
| 309 |
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{ |
| 310 |
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print STDERR $conn->errorMessage unless ($quiet); |
| 311 |
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$conn->exec("ROLLBACK"); |
| 312 |
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return(-1); |
| 313 |
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} |
| 314 |
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| 315 |
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$result = $conn->exec("SET CONSTRAINTS ALL DEFERRED"); |
| 316 |
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if ($result->resultStatus ne PGRES_COMMAND_OK) |
| 317 |
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{ |
| 318 |
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print STDERR $conn->errorMessage unless ($quiet); |
| 319 |
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$conn->exec("ROLLBACK"); |
| 320 |
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return(-1); |
| 321 |
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} |
| 322 |
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| 323 |
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# MAP name --> oid, keyname, keynum |
| 324 |
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my $sql = "select pgc.oid, pgc.relname, pga.attname, rt.key" . |
| 325 |
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" from _RSERV_SLAVE_TABLES_ rt, pg_class pgc, pg_attribute pga" . |
| 326 |
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" where pgc.oid = rt.reloid and pga.attrelid = rt.reloid" . |
| 327 |
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" and pga.attnum = rt.key"; |
| 328 |
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$result = $conn->exec($sql); |
| 329 |
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if ($result->resultStatus ne PGRES_TUPLES_OK) |
| 330 |
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{ |
| 331 |
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print STDERR $conn->errorMessage unless ($quiet); |
| 332 |
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$conn->exec("ROLLBACK"); |
| 333 |
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return(-1); |
| 334 |
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} |
| 335 |
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| 336 |
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while (@row = $result->fetchrow) |
| 337 |
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{ |
| 338 |
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# printf " %s %s\n", $row[1], $row[0]; |
| 339 |
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push @{$Stables{$row[1]}}, $row[0], $row[2], $row[3]; |
| 340 |
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} |
| 341 |
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| 342 |
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my $ok = 0; |
| 343 |
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my $syncid = ''; |
| 344 |
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while(<$inpf>) |
| 345 |
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{ |
| 346 |
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$_ =~ s/\n//; |
| 347 |
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my ($cmt, $cmd, $prm) = split (/[ ]+/, $_, 3); |
| 348 |
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if ($cmt ne '--') |
| 349 |
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{ |
| 350 |
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printf STDERR "Invalid format\n" unless ($quiet); |
| 351 |
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$conn->exec("ROLLBACK"); |
| 352 |
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return(-2); |
| 353 |
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} |
| 354 |
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if ($cmd eq 'DELETE') |
| 355 |
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{ |
| 356 |
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if ($syncid eq '') |
| 357 |
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{ |
| 358 |
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printf STDERR "Sync ID unspecified\n" unless ($quiet); |
| 359 |
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$conn->exec("ROLLBACK"); |
| 360 |
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return(-2); |
| 361 |
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} |
| 362 |
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$result = DoDelete($conn, $inpf, $prm); |
| 363 |
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if ($result) |
| 364 |
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{ |
| 365 |
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$conn->exec("ROLLBACK"); |
| 366 |
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return($result); |
| 367 |
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} |
| 368 |
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} |
| 369 |
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elsif ($cmd eq 'UPDATE') |
| 370 |
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{ |
| 371 |
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if ($syncid eq '') |
| 372 |
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{ |
| 373 |
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printf STDERR "Sync ID unspecified\n" unless ($quiet); |
| 374 |
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$conn->exec("ROLLBACK"); |
| 375 |
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return(-2); |
| 376 |
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} |
| 377 |
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$result = DoUpdate($conn, $inpf, $prm); |
| 378 |
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if ($result) |
| 379 |
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|
{ |
| 380 |
|
|
$conn->exec("ROLLBACK"); |
| 381 |
|
|
return($result); |
| 382 |
|
|
} |
| 383 |
|
|
} |
| 384 |
|
|
elsif ($cmd eq 'SYNCID') |
| 385 |
|
|
{ |
| 386 |
|
|
if ($syncid ne '') |
| 387 |
|
|
{ |
| 388 |
|
|
printf STDERR "Second Sync ID ?!\n" unless ($quiet); |
| 389 |
|
|
$conn->exec("ROLLBACK"); |
| 390 |
|
|
return(-2); |
| 391 |
|
|
} |
| 392 |
|
|
if ($prm !~ /^\d+$/) |
| 393 |
|
|
{ |
| 394 |
|
|
printf STDERR "Invalid Sync ID $prm\n" unless ($quiet); |
| 395 |
|
|
$conn->exec("ROLLBACK"); |
| 396 |
|
|
return(-2); |
| 397 |
|
|
} |
| 398 |
|
|
$syncid = $prm; |
| 399 |
|
|
|
| 400 |
|
|
printf STDERR "Sync ID $syncid\n" unless ($quiet); |
| 401 |
|
|
|
| 402 |
|
|
$result = $conn->exec("select syncid, synctime from " . |
| 403 |
|
|
"_RSERV_SLAVE_SYNC_ where syncid = " . |
| 404 |
|
|
"(select max(syncid) from _RSERV_SLAVE_SYNC_)"); |
| 405 |
|
|
if ($result->resultStatus ne PGRES_TUPLES_OK) |
| 406 |
|
|
{ |
| 407 |
|
|
print STDERR $conn->errorMessage unless ($quiet); |
| 408 |
|
|
$conn->exec("ROLLBACK"); |
| 409 |
|
|
return(-1); |
| 410 |
|
|
} |
| 411 |
|
|
my @row = $result->fetchrow; |
| 412 |
|
|
if (! defined $row[0]) |
| 413 |
|
|
{ |
| 414 |
|
|
$result = $conn->exec("insert into" . |
| 415 |
|
|
" _RSERV_SLAVE_SYNC_(syncid, synctime) values ($syncid, now())"); |
| 416 |
|
|
} |
| 417 |
|
|
elsif ($row[0] >= $prm) |
| 418 |
|
|
{ |
| 419 |
|
|
printf STDERR "Sync-ed to ID $row[0] ($row[1])\n" unless ($quiet); |
| 420 |
|
|
$conn->exec("ROLLBACK"); |
| 421 |
|
|
return(0); |
| 422 |
|
|
} |
| 423 |
|
|
else |
| 424 |
|
|
{ |
| 425 |
|
|
$result = $conn->exec("update _RSERV_SLAVE_SYNC_" . |
| 426 |
|
|
" set syncid = $syncid, synctime = now()"); |
| 427 |
|
|
} |
| 428 |
|
|
if ($result->resultStatus ne PGRES_COMMAND_OK) |
| 429 |
|
|
{ |
| 430 |
|
|
print STDERR $conn->errorMessage unless ($quiet); |
| 431 |
|
|
$conn->exec("ROLLBACK"); |
| 432 |
|
|
return(-1); |
| 433 |
|
|
} |
| 434 |
|
|
} |
| 435 |
|
|
elsif ($cmd eq 'OK') |
| 436 |
|
|
{ |
| 437 |
|
|
$ok = 1; |
| 438 |
|
|
last; |
| 439 |
|
|
} |
| 440 |
|
|
elsif ($cmd eq 'ERROR') |
| 441 |
|
|
{ |
| 442 |
|
|
printf STDERR "ERROR signaled\n" unless ($quiet); |
| 443 |
|
|
$conn->exec("ROLLBACK"); |
| 444 |
|
|
return(-2); |
| 445 |
|
|
} |
| 446 |
|
|
else |
| 447 |
|
|
{ |
| 448 |
|
|
printf STDERR "Unknown command $cmd\n" unless ($quiet); |
| 449 |
|
|
$conn->exec("ROLLBACK"); |
| 450 |
|
|
return(-2); |
| 451 |
|
|
} |
| 452 |
|
|
} |
| 453 |
|
|
|
| 454 |
|
|
if (! $ok) |
| 455 |
|
|
{ |
| 456 |
|
|
printf STDERR "No OK flag in input\n" unless ($quiet); |
| 457 |
|
|
$conn->exec("ROLLBACK"); |
| 458 |
|
|
return(-2); |
| 459 |
|
|
} |
| 460 |
|
|
|
| 461 |
|
|
$result = $conn->exec("COMMIT"); |
| 462 |
|
|
if ($result->resultStatus ne PGRES_COMMAND_OK) |
| 463 |
|
|
{ |
| 464 |
|
|
print STDERR $conn->errorMessage unless ($quiet); |
| 465 |
|
|
$conn->exec("ROLLBACK"); |
| 466 |
|
|
return(-1); |
| 467 |
|
|
} |
| 468 |
|
|
|
| 469 |
|
|
return(1); |
| 470 |
|
|
} |
| 471 |
|
|
|
| 472 |
|
|
sub DoDelete |
| 473 |
|
|
{ |
| 474 |
|
|
my ($conn, $inpf, $tabname) = @_; # (@_[0], @_[1], @_[2]); |
| 475 |
|
|
|
| 476 |
|
|
my $ok = 0; |
| 477 |
|
|
while(<$inpf>) |
| 478 |
|
|
{ |
| 479 |
|
|
if ($_ !~ /\n$/) |
| 480 |
|
|
{ |
| 481 |
|
|
printf STDERR "Invalid format\n" unless ($quiet); |
| 482 |
|
|
return(-2); |
| 483 |
|
|
} |
| 484 |
|
|
my $key = $_; |
| 485 |
|
|
$key =~ s/\n//; |
| 486 |
|
|
if ($key eq '\.') |
| 487 |
|
|
{ |
| 488 |
|
|
$ok = 1; |
| 489 |
|
|
last; |
| 490 |
|
|
} |
| 491 |
|
|
|
| 492 |
|
|
my $sql = "delete from $tabname where $Stables{$tabname}->[1] = '$key'"; |
| 493 |
|
|
|
| 494 |
|
|
printf "$sql\n" if $debug; |
| 495 |
|
|
|
| 496 |
|
|
my $result = $conn->exec($sql); |
| 497 |
|
|
if ($result->resultStatus ne PGRES_COMMAND_OK) |
| 498 |
|
|
{ |
| 499 |
|
|
print STDERR $conn->errorMessage unless ($quiet); |
| 500 |
|
|
return(-1); |
| 501 |
|
|
} |
| 502 |
|
|
} |
| 503 |
|
|
|
| 504 |
|
|
if (! $ok) |
| 505 |
|
|
{ |
| 506 |
|
|
printf STDERR "No end of input in DELETE section\n" unless ($quiet); |
| 507 |
|
|
return(-2); |
| 508 |
|
|
} |
| 509 |
|
|
|
| 510 |
|
|
return(0); |
| 511 |
|
|
} |
| 512 |
|
|
|
| 513 |
|
|
|
| 514 |
|
|
sub DoUpdate |
| 515 |
|
|
{ |
| 516 |
|
|
my ($conn, $inpf, $tabname) = @_; # (@_[0], @_[1], @_[2]); |
| 517 |
|
|
my $oidkey = ($Stables{$tabname}->[2] < 0) ? 1 : 0; |
| 518 |
|
|
|
| 519 |
|
|
my @CopyBuf = (); |
| 520 |
|
|
my $CBufLen = 0; |
| 521 |
|
|
my $CBufMax = 16 * 1024 * 1024; # max size of buf for copy |
| 522 |
|
|
|
| 523 |
|
|
my $sql = "select attnum, attname from pg_attribute" . |
| 524 |
|
|
" where attrelid = $Stables{$tabname}->[0] and attnum > 0"; |
| 525 |
|
|
|
| 526 |
|
|
my $result = $conn->exec($sql); |
| 527 |
|
|
if ($result->resultStatus ne PGRES_TUPLES_OK) |
| 528 |
|
|
{ |
| 529 |
|
|
print STDERR $conn->errorMessage unless ($quiet); |
| 530 |
|
|
return(-1); |
| 531 |
|
|
} |
| 532 |
|
|
|
| 533 |
|
|
my @anames = (); |
| 534 |
|
|
while (@row = $result->fetchrow) |
| 535 |
|
|
{ |
| 536 |
|
|
$anames[$row[0]] = $row[1]; |
| 537 |
|
|
} |
| 538 |
|
|
|
| 539 |
|
|
my $istring; |
| 540 |
|
|
my $ok = 0; |
| 541 |
|
|
while(<$inpf>) |
| 542 |
|
|
{ |
| 543 |
|
|
if ($_ !~ /\n$/) |
| 544 |
|
|
{ |
| 545 |
|
|
printf STDERR "Invalid format\n" unless ($quiet); |
| 546 |
|
|
return(-2); |
| 547 |
|
|
} |
| 548 |
|
|
$istring = $_; |
| 549 |
|
|
$istring =~ s/\n//; |
| 550 |
|
|
if ($istring eq '\.') |
| 551 |
|
|
{ |
| 552 |
|
|
$ok = 1; |
| 553 |
|
|
last; |
| 554 |
|
|
} |
| 555 |
|
|
my @vals = split(/ /, $istring); |
| 556 |
|
|
if ($oidkey) |
| 557 |
|
|
{ |
| 558 |
|
|
if ($vals[0] !~ /^\d+$/ || $vals[0] <= 0) |
| 559 |
|
|
{ |
| 560 |
|
|
printf STDERR "Invalid OID\n" unless ($quiet); |
| 561 |
|
|
return(-2); |
| 562 |
|
|
} |
| 563 |
|
|
$oidkey = $vals[0]; |
| 564 |
|
|
} |
| 565 |
|
|
else |
| 566 |
|
|
{ |
| 567 |
|
|
unshift @vals, ''; |
| 568 |
|
|
} |
| 569 |
|
|
|
| 570 |
|
|
$sql = "update $tabname set "; |
| 571 |
|
|
my $ocnt = 0; |
| 572 |
|
|
for (my $i = 1; $i <= $#anames; $i++) |
| 573 |
|
|
{ |
| 574 |
|
|
if ($vals[$i] eq '\N') |
| 575 |
|
|
{ |
| 576 |
|
|
if ($i == $Stables{$tabname}->[2]) |
| 577 |
|
|
{ |
| 578 |
|
|
printf STDERR "NULL key\n" unless ($quiet); |
| 579 |
|
|
return(-2); |
| 580 |
|
|
} |
| 581 |
|
|
$vals[$i] = 'null'; |
| 582 |
|
|
} |
| 583 |
|
|
else |
| 584 |
|
|
{ |
| 585 |
|
|
$vals[$i] = "'" . $vals[$i] . "'"; |
| 586 |
|
|
next if $i == $Stables{$tabname}->[2]; |
| 587 |
|
|
} |
| 588 |
|
|
$ocnt++; |
| 589 |
|
|
$sql .= ', ' if $ocnt > 1; |
| 590 |
|
|
$sql .= "$anames[$i] = $vals[$i]"; |
| 591 |
|
|
} |
| 592 |
|
|
if ($oidkey) |
| 593 |
|
|
{ |
| 594 |
|
|
$sql .= " where $Stables{$tabname}->[1] = $oidkey"; |
| 595 |
|
|
} |
| 596 |
|
|
else |
| 597 |
|
|
{ |
| 598 |
|
|
$sql .= " where $Stables{$tabname}->[1] = $vals[$Stables{$tabname}->[2]]"; |
| 599 |
|
|
} |
| 600 |
|
|
|
| 601 |
|
|
printf "$sql\n" if $debug; |
| 602 |
|
|
|
| 603 |
|
|
$result = $conn->exec($sql); |
| 604 |
|
|
if ($result->resultStatus ne PGRES_COMMAND_OK) |
| 605 |
|
|
{ |
| 606 |
|
|
print STDERR $conn->errorMessage unless ($quiet); |
| 607 |
|
|
return(-1); |
| 608 |
|
|
} |
| 609 |
|
|
next if $result->cmdTuples == 1; # updated |
| 610 |
|
|
|
| 611 |
|
|
if ($result->cmdTuples > 1) |
| 612 |
|
|
{ |
| 613 |
|
|
printf STDERR "Duplicate keys\n" unless ($quiet); |
| 614 |
|
|
return(-2); |
| 615 |
|
|
} |
| 616 |
|
|
|
| 617 |
|
|
# no key - copy |
| 618 |
|
|
push @CopyBuf, "$istring\n"; |
| 619 |
|
|
$CBufLen += length($istring); |
| 620 |
|
|
|
| 621 |
|
|
if ($CBufLen >= $CBufMax) |
| 622 |
|
|
{ |
| 623 |
|
|
$result = DoCopy($conn, $tabname, $oidkey, \@CopyBuf); |
| 624 |
|
|
return($result) if $result; |
| 625 |
|
|
@CopyBuf = (); |
| 626 |
|
|
$CBufLen = 0; |
| 627 |
|
|
} |
| 628 |
|
|
} |
| 629 |
|
|
|
| 630 |
|
|
if (! $ok) |
| 631 |
|
|
{ |
| 632 |
|
|
printf STDERR "No end of input in UPDATE section\n" unless ($quiet); |
| 633 |
|
|
return(-2); |
| 634 |
|
|
} |
| 635 |
|
|
|
| 636 |
|
|
if ($CBufLen) |
| 637 |
|
|
{ |
| 638 |
|
|
$result = DoCopy($conn, $tabname, $oidkey, \@CopyBuf); |
| 639 |
|
|
return($result) if $result; |
| 640 |
|
|
} |
| 641 |
|
|
|
| 642 |
|
|
return(0); |
| 643 |
|
|
} |
| 644 |
|
|
|
| 645 |
|
|
|
| 646 |
|
|
sub DoCopy |
| 647 |
|
|
{ |
| 648 |
|
|
my ($conn, $tabname, $withoids, $CBuf) = @_; # (@_[0], @_[1], @_[2], @_[3]); |
| 649 |
|
|
|
| 650 |
|
|
my $sql = "COPY $tabname " . (($withoids) ? "WITH OIDS " : '') . |
| 651 |
|
|
"FROM STDIN"; |
| 652 |
|
|
my $result = $conn->exec($sql); |
| 653 |
|
|
if ($result->resultStatus ne PGRES_COPY_IN) |
| 654 |
|
|
{ |
| 655 |
|
|
print STDERR $conn->errorMessage unless ($quiet); |
| 656 |
|
|
return(-1); |
| 657 |
|
|
} |
| 658 |
|
|
|
| 659 |
|
|
foreach $str (@{$CBuf}) |
| 660 |
|
|
{ |
| 661 |
|
|
$conn->putline($str); |
| 662 |
|
|
} |
| 663 |
|
|
|
| 664 |
|
|
$conn->putline("\\.\n"); |
| 665 |
|
|
|
| 666 |
|
|
if ($conn->endcopy) |
| 667 |
|
|
{ |
| 668 |
|
|
print STDERR $conn->errorMessage unless ($quiet); |
| 669 |
|
|
return(-1); |
| 670 |
|
|
} |
| 671 |
|
|
|
| 672 |
|
|
return(0); |
| 673 |
|
|
|
| 674 |
|
|
} |
| 675 |
|
|
|
| 676 |
|
|
|
| 677 |
|
|
# |
| 678 |
|
|
# Returns last SyncID applied on Slave |
| 679 |
|
|
# |
| 680 |
|
|
sub GetSyncID |
| 681 |
|
|
{ |
| 682 |
|
|
my ($conn) = @_; # (@_[0]); |
| 683 |
|
|
|
| 684 |
|
|
my $result = $conn->exec("select max(syncid) from _RSERV_SLAVE_SYNC_"); |
| 685 |
|
|
if ($result->resultStatus ne PGRES_TUPLES_OK) |
| 686 |
|
|
{ |
| 687 |
|
|
print STDERR $conn->errorMessage unless ($quiet); |
| 688 |
|
|
return(-1); |
| 689 |
|
|
} |
| 690 |
|
|
my @row = $result->fetchrow; |
| 691 |
|
|
return(undef) unless defined $row[0]; # null |
| 692 |
|
|
return($row[0]); |
| 693 |
|
|
} |
| 694 |
|
|
|
| 695 |
|
|
# |
| 696 |
|
|
# Updates _RSERV_SYNC_ on Master with Slave SyncID |
| 697 |
|
|
# |
| 698 |
|
|
sub SyncSyncID |
| 699 |
|
|
{ |
| 700 |
|
|
my ($conn, $server, $syncid) = @_; # (@_[0], @_[1], @_[2]); |
| 701 |
|
|
|
| 702 |
|
|
my $result = $conn->exec("BEGIN"); |
| 703 |
|
|
if ($result->resultStatus ne PGRES_COMMAND_OK) |
| 704 |
|
|
{ |
| 705 |
|
|
print STDERR $conn->errorMessage unless ($quiet); |
| 706 |
|
|
$conn->exec("ROLLBACK"); |
| 707 |
|
|
return(-1); |
| 708 |
|
|
} |
| 709 |
|
|
|
| 710 |
|
|
$result = $conn->exec("select synctime, status from _RSERV_SYNC_" . |
| 711 |
|
|
" where server = $server and syncid = $syncid" . |
| 712 |
|
|
" for update"); |
| 713 |
|
|
if ($result->resultStatus ne PGRES_TUPLES_OK) |
| 714 |
|
|
{ |
| 715 |
|
|
print STDERR $conn->errorMessage unless ($quiet); |
| 716 |
|
|
$conn->exec("ROLLBACK"); |
| 717 |
|
|
return(-1); |
| 718 |
|
|
} |
| 719 |
|
|
my @row = $result->fetchrow; |
| 720 |
|
|
if (! defined $row[0]) |
| 721 |
|
|
{ |
| 722 |
|
|
printf STDERR "No SyncID $syncid found for server $server\n" unless ($quiet); |
| 723 |
|
|
$conn->exec("ROLLBACK"); |
| 724 |
|
|
return(0); |
| 725 |
|
|
} |
| 726 |
|
|
if ($row[1] > 0) |
| 727 |
|
|
{ |
| 728 |
|
|
printf STDERR "SyncID $syncid for server $server already updated\n" unless ($quiet); |
| 729 |
|
|
$conn->exec("ROLLBACK"); |
| 730 |
|
|
return(0); |
| 731 |
|
|
} |
| 732 |
|
|
$result = $conn->exec("update _RSERV_SYNC_" . |
| 733 |
|
|
" set synctime = now(), status = 1" . |
| 734 |
|
|
" where server = $server and syncid = $syncid"); |
| 735 |
|
|
if ($result->resultStatus ne PGRES_COMMAND_OK) |
| 736 |
|
|
{ |
| 737 |
|
|
print STDERR $conn->errorMessage unless ($quiet); |
| 738 |
|
|
$conn->exec("ROLLBACK"); |
| 739 |
|
|
return(-1); |
| 740 |
|
|
} |
| 741 |
|
|
$result = $conn->exec("delete from _RSERV_SYNC_" . |
| 742 |
|
|
" where server = $server and syncid < $syncid"); |
| 743 |
|
|
if ($result->resultStatus ne PGRES_COMMAND_OK) |
| 744 |
|
|
{ |
| 745 |
|
|
print STDERR $conn->errorMessage unless ($quiet); |
| 746 |
|
|
$conn->exec("ROLLBACK"); |
| 747 |
|
|
return(-1); |
| 748 |
|
|
} |
| 749 |
|
|
|
| 750 |
|
|
$result = $conn->exec("COMMIT"); |
| 751 |
|
|
if ($result->resultStatus ne PGRES_COMMAND_OK) |
| 752 |
|
|
{ |
| 753 |
|
|
print STDERR $conn->errorMessage unless ($quiet); |
| 754 |
|
|
$conn->exec("ROLLBACK"); |
| 755 |
|
|
return(-1); |
| 756 |
|
|
} |
| 757 |
|
|
|
| 758 |
|
|
return(1); |
| 759 |
|
|
} |
| 760 |
|
|
|
| 761 |
|
|
1; |
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| 
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