DigiComp.FlowMaintenanceMode

This package assists in presenting each visitor of your system a page showing working on maintenance.

It allows you to use usual error page rendering for that purpose - the idea is, that those layouts, should exist anyway.

If you want to bypass the maintenance mode, you can do so by configuring a cookie based exception:

DigiComp:
  FlowMaintenanceMode:
    allowCookie:
      name: name
      value: value

That would allow you to bypass the maintenance answer, if you had a cookie named 'name' with a value of 'value'. If you set 'value' to null only the name is matched.

You can extend the exception behavior, by implementing the AllowModuleInterface and add it to DigiComp.FlowMaintenanceMode.allowModules. This list is handled by PositionalArraySorter. You can use position keys to order them, or set their value to null to exclude them from being used.