Bug 451269: Add example code for bug-end_of_update and flag-end_of_update hooks.

extensions/example/code/bug-end_of_update.pl

+# -*- 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 Example Plugin.
+#
+# The Initial Developer of the Original Code is Everything Solved, Inc.
+# Portions created by Everything Solved are Copyright (C) 2008 
+# Everything Solved, Inc. All Rights Reserved.
+#
+# Contributor(s): Max Kanat-Alexander <mkanat@bugzilla.org>
+
+use strict;
+use warnings;
+use Bugzilla;
+use Bugzilla::Status;
+
+# This code doesn't actually *do* anything, it's just here to show you
+# how to use this hook.
+my $args = Bugzilla->hook_args;
+my $bug = $args->{'bug'};
+my $timestamp = $args->{'timestamp'};
+my $changes = $args->{'changes'};
+
+foreach my $field (keys %$changes) {
+    my $used_to_be = $changes->{$field}->[0];
+    my $now_it_is  = $changes->{$field}->[1];
+}
+
+my $status_message;
+if (my $status_change = $changes->{'bug_status'}) {
+    my $old_status = new Bugzilla::Status({ name => $status_change->[0] });
+    my $new_status = new Bugzilla::Status({ name => $status_change->[1] });
+    if ($new_status->is_open && !$old_status->is_open) {
+        $status_message = "Bug re-opened!";
+    }
+    if (!$new_status->is_open && $old_status->is_open) {
+        $status_message = "Bug closed!";
+    }
+}
+
+my $bug_id = $bug->id;
+my $num_changes = scalar keys %$changes;
+my $result = "There were $num_changes changes to fields on bug $bug_id"
+             . " at $timestamp.";
+# Uncomment this line to see $result in your webserver's error log whenever
+# you update a bug.
+# warn $result;

extensions/example/code/flag-end_of_update.pl

+# -*- 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 Example Plugin.
+#
+# The Initial Developer of the Original Code is Everything Solved, Inc.
+# Portions created by Everything Solved are Copyright (C) 2008 
+# Everything Solved, Inc. All Rights Reserved.
+#
+# Contributor(s): Max Kanat-Alexander <mkanat@bugzilla.org>
+
+use strict;
+use warnings;
+use Bugzilla;
+use Bugzilla::Util qw(diff_arrays);
+
+# This code doesn't actually *do* anything, it's just here to show you
+# how to use this hook.
+my $args = Bugzilla->hook_args;
+my ($bug, $timestamp, $old_flags, $new_flags) = 
+    @$args{qw(bug timestamp old_flags new_flags)};
+my ($removed, $added) = diff_arrays($old_flags, $new_flags);
+my ($granted, $denied) = (0, 0);
+foreach my $new_flag (@$added) {
+    $granted++ if $new_flag =~ /\+$/;
+    $denied++ if $new_flag =~ /-$/;
+}
+my $bug_id = $bug->id;
+my $result = "$granted flags were granted and $denied flags were denied"
+             . " on bug $bug_id at $timestamp.";
+# Uncomment this line to see $result in your webserver's error log whenever
+# you update flags.
+# warn $result;