From 4adf7f1b401955a1938cfc7a9decdc77af2fab20 Mon Sep 17 00:00:00 2001
From: "mkanat%bugzilla.org" <>
Date: Sat, 24 Oct 2009 05:30:14 +0000
Subject: Bug 519584: Implement a framework for migrating from other
 bug-trackers, and start with a GNATS importer. Patch by Max Kanat-Alexander
 <mkanat@bugzilla.org> (module owner) a=mkanat

---
 migrate.pl | 110 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 migrate.pl

(limited to 'migrate.pl')

diff --git a/migrate.pl b/migrate.pl
new file mode 100644
index 000000000..df6b833a0
--- /dev/null
+++ b/migrate.pl
@@ -0,0 +1,110 @@
+#!/usr/bin/perl -w
+# -*- Mode: perl; indent-tabs-mode: nil -*-
+#
+# The contents of this file are subject to the Mozilla Public
+# License Version 1.1 (the "License"); you may not use this file
+# except in compliance with the License. You may obtain a copy of
+# the License at http://www.mozilla.org/MPL/
+#
+# Software distributed under the License is distributed on an "AS
+# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+# implied. See the License for the specific language governing
+# rights and limitations under the License.
+#
+# The Original Code is The Bugzilla Migration Tool.
+#
+# The Initial Developer of the Original Code is Lambda Research
+# Corporation. Portions created by the Initial Developer are Copyright
+# (C) 2009 the Initial Developer. All Rights Reserved.
+#
+# Contributor(s): 
+#   Max Kanat-Alexander <mkanat@bugzilla.org>
+
+use strict;
+use File::Basename;
+BEGIN { chdir dirname($0); }
+use lib qw(. lib);
+use Bugzilla;
+use Bugzilla::Migrate;
+
+use Getopt::Long;
+use Pod::Usage;
+
+my %switch;
+GetOptions(\%switch, 'help|h|?', 'from=s', 'verbose|v+', 'dry-run');
+
+# Print the help message if that switch was selected or if --from
+# wasn't specified.
+if (!$switch{'from'} or $switch{'help'}) {
+    pod2usage({-exitval => 1});
+}
+
+my $migrator = Bugzilla::Migrate->load($switch{'from'});
+$migrator->verbose($switch{'verbose'});
+$migrator->dry_run($switch{'dry-run'});
+$migrator->check_requirements();
+$migrator->do_migration();
+
+# Even if there's an error, we want to be sure that the serial values
+# get reset properly.
+END {
+    if ($migrator and $migrator->dry_run) {
+        my $dbh = Bugzilla->dbh;
+        if ($dbh->bz_in_transaction) {
+            $dbh->bz_rollback_transaction();
+        }
+        $migrator->reset_serial_values();
+    }
+}
+
+__END__
+
+=head1 NAME
+
+migrate.pl - A script to migrate from other bug-trackers to Bugzilla.
+
+=head1 SYNOPSIS
+
+ ./migrate.pl --from=<tracker> [--verbose] [--dry-run]
+
+ Migrates from another bug-tracker to Bugzilla. If you want
+ to upgrade Bugzilla, use checksetup.pl instead.
+
+ Always test this on a backup copy of your database before
+ running it on your live Bugzilla.
+
+=head1 OPTIONS
+
+=over
+
+=item B<--from=tracker>
+
+Specifies what bug-tracker you're migrating from. To see what values
+are valid, see the contents of the F<Bugzilla/Migrate/> directory.
+
+=item B<--dry-run>
+
+Don't modify the Bugzilla database at all, just test the import.
+Note that this could cause significant slowdown and other strange effects
+on a live Bugzilla, so only use it on a test instance.
+
+=item B<--verbose>
+
+If specified, this script will output extra debugging information
+to STDERR. Specify multiple times (up to three) for more information.
+
+=back
+
+=head1 DESCRIPTION
+
+This script copies data from another bug-tracker into Bugzilla. It migrates
+users, products, and bugs from the other bug-tracker into this Bugzilla,
+without removing any of the data currently in this Bugzilla.
+
+Note that you will need enough space in your temporary directory to hold
+the size of all attachments in your current bug-tracker.
+
+You may also need to increase the number of file handles a process is allowed
+to hold open (as the migrator will create a file handle for each attachment
+in your database). On Linux and simliar systems, you can do this as root
+by typing C<ulimit -n 65535> before running your script.
\ No newline at end of file
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