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Create non-existing tables, fields and indexes during bzdbcopy.pl

hinted-selects
Vitaliy Filippov 2014-10-29 19:38:50 +03:00
parent 43f82e191c
commit 9523a3500c
1 changed files with 61 additions and 17 deletions
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78
contrib/bzdbcopy.pl
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@ -89,15 +89,53 @@ my $target_db = Bugzilla::DB::_connect(
);
my $ident_char = $target_db->get_info(29); # SQL_IDENTIFIER_QUOTE_CHAR
# We use the table list from the target DB, because if somebody
# has customized their source DB, we still want the script to work,
# and it may otherwise fail in that situation (that is, the tables
# may not exist in the target DB).
my @table_list = $target_db->bz_table_list_real();
my @src_tables = $source_db->_bz_real_schema->get_table_list;
# We don't want to copy over the bz_schema table's contents.
my $bz_schema_location = lsearch(\@table_list, 'bz_schema');
splice @table_list, $bz_schema_location, 1 if $bz_schema_location > 0;
# We don't want to touch the schema storage and the full-text index
@src_tables = grep { $_ ne 'bz_schema' && $_ ne 'bugs_fulltext' } @src_tables;
foreach my $table (@src_tables)
{
my $st = $source_db->bz_table_info($table);
my $tt = $target_db->bz_table_info($table);
if (!$tt)
{
# Create tables that do not exist in the target DB (usually custom field tables)
$target_db->_bz_schema->{schema}->{$table} = $st;
$target_db->_bz_schema->{abstract_schema}->{$table} = $st;
$target_db->bz_add_table($table);
}
else
{
# Create fields that do not exist in the target DB (usually custom fields in 'bugs')
my %tf = @{$tt->{FIELDS}};
my %sf = @{$st->{FIELDS}};
for (keys %sf)
{
if (!$tf{$_})
{
push @{$target_db->_bz_schema->{schema}->{$table}->{FIELDS}}, $_, $sf{$_};
push @{$target_db->_bz_schema->{abstract_schema}->{$table}->{FIELDS}}, $_, $sf{$_};
$target_db->bz_add_column($table, $_);
}
}
%tf = @{$tt->{INDEXES} || []};
%sf = @{$st->{INDEXES} || []};
for (keys %sf)
{
my $n = $_;
$n = 'PRIMARY' if lc($n) eq $table.'_primary_idx';
if (!$tf{$n})
{
$target_db->bz_add_index($table, $n, $sf{$_});
}
}
}
}
# Intersect source and target table sets
my %st = map { $_ => 1 } @src_tables;
my @table_list = grep { $st{$_} } $target_db->_bz_real_schema->get_table_list;
# Instead of figuring out some fancy algorithm to insert data in the right
# order and not break FK integrity, we just drop them all.
@ -257,6 +295,15 @@ bzdbcopy.pl - Copies data from one Bugzilla database to another.
=head1 USAGE
=over
=item 1. Setup the 'localconfig' for the target database
=item 2. Run ./checksetup.pl inside your Bugzilla installation directory
on the target database to populate it with empty tables
=item 3. Run contrib/bzdbcopy.pl
cd <bugzilla_installation_dir>
perl contrib/bzdbcopy.pl --source-type mysql --source-host localhost \
--source-name bugs --source-user bugs --source-password bugs \
@ -266,18 +313,15 @@ bzdbcopy.pl - Copies data from one Bugzilla database to another.
Here, --source-* are the type, host, database name, user and password
for the source database, and --target-* are the same for the target one.
=back
=head1 DESCRIPTION
The intended use of this script is to copy data from an installation
running on one DB platform to an installation running on another
DB platform.
Note: Both schemas must already exist and be B<IDENTICAL>. (That is,
they must have both been created/updated by the same version of
checksetup.pl.) This script will B<DESTROY ALL CURRENT DATA> in the
target database.
Both Schemas must be at least from Bugzilla 2.19.3, but if you're
running a Bugzilla from before 2.20rc2, you'll need the patch at:
L<http://bugzilla.mozilla.org/show_bug.cgi?id=300311> in order to
be able to run this script.
Note: Both schemas must already exist and both must be created/updated
by the B<SAME> version of checksetup.pl. B<No custom fields> must exist
in the target database. This script will B<DESTROY ALL CURRENT DATA> in
the target database.