зеркало из https://github.com/mozilla/pjs.git
206 строки
8.0 KiB
Perl
Executable File
206 строки
8.0 KiB
Perl
Executable File
#!/usr/bin/perl -w
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#
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# The contents of this file are subject to the Mozilla Public
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# License Version 1.1 (the "License"); you may not use this file
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# except in compliance with the License. You may obtain a copy of
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# the License at http://www.mozilla.org/MPL/
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#
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# Software distributed under the License is distributed on an "AS
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# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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# implied. See the License for the specific language governing
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# rights and limitations under the License.
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#
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# The Original Code is the Bugzilla Bug Tracking System.
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#
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# The Initial Developer of the Original Code is Everything Solved.
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# Portions created by Everything Solved are Copyright (C) 2006
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# Everything Solved. All Rights Reserved.
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#
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# Contributor(s): Max Kanat-Alexander <mkanat@bugzilla.org>
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use strict;
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use lib ".";
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use Bugzilla;
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use Bugzilla::DB;
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use Bugzilla::Util;
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#####################################################################
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# User-Configurable Settings
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#####################################################################
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# Settings for the 'Source' DB that you are copying from.
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use constant SOURCE_DB_TYPE => 'Mysql';
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use constant SOURCE_DB_NAME => 'bugs';
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use constant SOURCE_DB_USER => 'bugs';
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use constant SOURCE_DB_PASSWORD => '';
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# Settings for the 'Target' DB that you are copying to.
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use constant TARGET_DB_TYPE => 'Pg';
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use constant TARGET_DB_NAME => 'bugs';
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use constant TARGET_DB_USER => 'bugs';
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use constant TARGET_DB_PASSWORD => '';
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#####################################################################
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# MAIN SCRIPT
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#####################################################################
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print "Connecting to the '" . SOURCE_DB_NAME . "' source database on "
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. SOURCE_DB_TYPE . "...\n";
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my $source_db = Bugzilla::DB::_connect(SOURCE_DB_TYPE, 'localhost',
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SOURCE_DB_NAME, undef, undef, SOURCE_DB_USER, SOURCE_DB_PASSWORD);
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print "Connecting to the '" . TARGET_DB_NAME . "' target database on "
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. TARGET_DB_TYPE . "...\n";
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my $target_db = Bugzilla::DB::_connect(TARGET_DB_TYPE, 'localhost',
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TARGET_DB_NAME, undef, undef, TARGET_DB_USER, TARGET_DB_PASSWORD);
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# We use the table list from the target DB, because if somebody
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# has customized their source DB, we still want the script to work,
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# and it may otherwise fail in that situation (that is, the tables
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# may not exist in the target DB).
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my @table_list = $target_db->bz_table_list_real();
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# We don't want to copy over the bz_schema table's contents.
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my $bz_schema_location = lsearch(\@table_list, 'bz_schema');
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splice(@table_list, $bz_schema_location, 1) if $bz_schema_location > 0;
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# We turn off autocommit on the target DB, because we're doing so
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# much copying.
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$target_db->{AutoCommit} = 0;
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$target_db->{AutoCommit} == 0
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|| warn "Failed to disable autocommit on " . TARGET_DB_TYPE;
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foreach my $table (@table_list) {
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my @serial_cols;
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print "Reading data from the source '$table' table on "
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. SOURCE_DB_TYPE . "...\n";
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my @table_columns = $target_db->bz_table_columns_real($table);
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my $select_query = "SELECT " . join(',', @table_columns) . " FROM $table";
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my $data_in = $source_db->selectall_arrayref($select_query);
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my $insert_query = "INSERT INTO $table ( " . join(',', @table_columns)
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. " ) VALUES (";
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$insert_query .= '?,' foreach (@table_columns);
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# Remove the last comma.
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chop($insert_query);
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$insert_query .= ")";
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my $insert_sth = $target_db->prepare($insert_query);
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print "Clearing out the target '$table' table on "
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. TARGET_DB_TYPE . "...\n";
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$target_db->do("DELETE FROM $table");
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print "Writing data to the target '$table' table on "
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. TARGET_DB_TYPE . "...";
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foreach my $row (@$data_in) {
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# Each column needs to be bound separately, because
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# many columns need to be dealt with specially.
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my $colnum = 0;
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foreach my $column (@table_columns) {
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# bind_param args start at 1, but arrays start at 0.
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my $param_num = $colnum + 1;
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my $already_bound;
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# Certain types of columns need special handling.
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my $col_info = $source_db->bz_column_info($table, $column);
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if ($col_info && $col_info->{TYPE} eq 'LONGBLOB') {
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$insert_sth->bind_param($param_num,
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$row->[$colnum], $target_db->BLOB_TYPE);
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$already_bound = 1;
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}
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elsif ($col_info && $col_info->{TYPE} =~ /decimal/) {
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# In MySQL, decimal cols can be too long.
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my $col_type = $col_info->{TYPE};
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$col_type =~ /decimal\((\d+),(\d+)\)/;
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my ($precision, $decimals) = ($1, $2);
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# If it's longer than precision + decimal point
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if ( length($row->[$colnum]) > ($precision + 1) ) {
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# Truncate it to the highest allowed value.
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my $orig_value = $row->[$colnum];
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$row->[$colnum] = '';
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my $non_decimal = $precision - $decimals;
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$row->[$colnum] .= '9' while ($non_decimal--);
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$row->[$colnum] .= '.';
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$row->[$colnum] .= '9' while ($decimals--);
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print "Truncated value $orig_value to " . $row->[$colnum]
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. " for $table.$column.\n";
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}
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}
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elsif ($col_info && $col_info->{TYPE} =~ /DATETIME/i) {
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my $date = $row->[$colnum];
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# MySQL can have strange invalid values for Datetimes.
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$row->[$colnum] = '1901-01-01 00:00:00'
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if $date && $date eq '0000-00-00 00:00:00';
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}
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$insert_sth->bind_param($param_num, $row->[$colnum])
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unless $already_bound;
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$colnum++;
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}
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$insert_sth->execute();
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}
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# PostgreSQL doesn't like it when you insert values into
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# a serial field; it doesn't increment the counter
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# automatically.
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if ($target_db->isa('Bugzilla::DB::Pg')) {
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foreach my $column (@table_columns) {
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my $col_info = $source_db->bz_column_info($table, $column);
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if ($col_info && $col_info->{TYPE} =~ /SERIAL/i) {
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# Set the sequence to the current max value + 1.
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my ($max_val) = $target_db->selectrow_array(
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"SELECT MAX($column) FROM $table");
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$max_val = 0 if !defined $max_val;
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$max_val++;
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print "\nSetting the next value for $table.$column to $max_val.";
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$target_db->do("SELECT pg_catalog.setval
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('${table}_${column}_seq', $max_val, false)");
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}
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}
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}
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print "\n\n";
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}
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print "Committing changes to the target database...\n";
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$target_db->commit;
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print "All done! Make sure to run checksetup on the new DB.\n";
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$source_db->disconnect;
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$target_db->disconnect;
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1;
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__END__
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=head1 NAME
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bzdbcopy.pl - Copies data from one Bugzilla database to another.
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=head1 DESCRIPTION
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The intended use of this script is to copy data from an installation
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running on one DB platform to an installation running on another
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DB platform.
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It must be run from the directory containing your Bugzilla installation.
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That means if this script is in the contrib/ directory, you should
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be running it as: C<./contrib/bzdbcopy.pl>
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Note: Both schemas must already exist and be B<IDENTICAL>. (That is,
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they must have both been created/updated by the same version of
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checksetup.pl.) This script will B<DESTROY ALL CURRENT DATA> in the
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target database.
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Both Schemas must be at least from Bugzilla 2.19.3, but if you're
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running a Bugzilla from before 2.20rc2, you'll need the patch at:
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L<http://bugzilla.mozilla.org/show_bug.cgi?id=300311> in order to
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be able to run this script.
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Before you using it, you have to correctly set all the variables
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in the "User-Configurable Settings" section at the top of the script.
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The C<SOURCE> settings are for the database you're copying from, and
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the C<TARGET> settings are for the database you're copying to. The
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C<DB_TYPE> is the name of a DB driver from the F<Bugzilla/DB/> directory.
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