add rake task server_tags_sync to clear invalid/disallowed server tag…

…s from the database (after changing the config)

lib/tasks/server_tags_sync.rake

@@ -0,0 +1,45 @@
+# BigBlueButton open source conferencing system - http://www.bigbluebutton.org/.
+#
+# Copyright (c) 2022 BigBlueButton Inc. and by respective authors (see below).
+#
+# This program is free software; you can redistribute it and/or modify it under the
+# terms of the GNU Lesser General Public License as published by the Free Software
+# Foundation; either version 3.0 of the License, or (at your option) any later
+# version.
+#
+# Greenlight is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License along
+# with Greenlight; if not, see <http://www.gnu.org/licenses/>.
+
+# frozen_string_literal: true
+
+desc 'Remove dismissed or disallowed server tags from database'
+
+task server_tags_sync: :environment do
+  tag_option = MeetingOption.find_by!(name: 'serverTag')
+
+  RoomMeetingOption.where(meeting_option: tag_option).find_each do |room_tag|
+    tag_value = room_tag.value
+    next if tag_value.blank?
+
+    role_id = room_tag.room.user.role_id
+    tag_invalid = false
+    if Rails.configuration.server_tag_names.key?(tag_value)
+      role_not_allowed = Rails.configuration.server_tag_roles.key?(tag_value) && Rails.configuration.server_tag_roles[tag_value].exclude?(role_id)
+      tag_invalid = true if role_not_allowed
+    else
+      tag_invalid = true
+    end
+
+    if tag_invalid
+      info "Clearing invalid server tag #{tag_value} for room with id #{room_tag.room}."
+      room_tag.update(value: '')
+    end
+  rescue StandardError => e
+    err "Unable to sync server tag of room:\nID: #{room_tag.room}\nError: #{e}"
+  end
+  success 'Successfully sanitized server tags.'
+end

sample.env

@@ -104,7 +104,8 @@ LOG_LEVEL=info
 ## Support for Tagged Servers
 # If your Greenlight instance is connected to Scalelite or another Loadbalancer with enabled support for the 'meta_server-tag'
 # parameter on create calls, you can use the following variables to configure support for this feature via the Greenlight UI.
-# Example (delimiters are , : and /):
+# When this configuration is changed later, disallowed tags can be removed from the DB via `bundle exec rake server_tags_sync`
+# Example configuration (delimiters are , : and /):
 # DEFAULT_TAG_NAME=Standard # friendly name for the untagged/default servers
 # SERVER_TAG_NAMES=tag1:Name 1,tag2:Name2  # defines available tags and their friendly names
 # SERVER_TAG_ROLES=tag2:xyz-123-321-aaaa-zyx/abc-321-123-zzzz-cba  # allow tag only for given role ids (see role ids in DB)