How can I remove the admin module?

Hi,

I'm trying to create a James server (I'm using release 3.8) without the
admin module. Main reason for this is that I want a minimal system.

As an experiement I created a copy of the jpa-smtp-app and then tried to
remove modules related to the webadmin.

It works if I disable some admin modules. However disabling the
DataRoutesModules results in a runtime error when trying to start the
application.

From JPAJamesServerMain:

    private static final Module PROTOCOLS = Modules.combine(
        new ProtocolHandlerModule(),
        new SMTPServerModule(),
//        new WebAdminServerModule(),
//        new DataRoutesModules(),
//        new MailRepositoriesRoutesModule(),
//        new MailQueueRoutesModule(),
//        new NoJwtModule(),
        new DefaultProcessorsConfigurationProviderModule(),
        new TaskManagerModule());

With the admin modules commented out, compilation works. However at runtime
the folllowing error is shown:


16:19:18.519 [ERROR] o.a.j.GuiceJamesServer - Fatal error while starting
James
com.google.inject.CreationException: Unable to create injector, see the
following errors:

1) [Guice/MissingImplementation]: No implementation for
Set<AdditionalInformationDTOModule<? extends
TaskExecutionDetails$AdditionalInformation, ? extends
AdditionalInformationDTO>> was bound.

Did you mean?
    Set<AdditionalInformationDTOModule<? extends
TaskExecutionDetails$AdditionalInformation, ? extends
AdditionalInformationDTO>> annotated with
@Named(value="additional_information_dto") bound at
TaskSerializationModule.provideAdditionalInformationDTOModules(TaskSerializationModule.java:60)
      \_ installed by: Modules$OverrideModule -> Modules$CombinedModule ->
Modules$CombinedModule -> Modules$CombinedModule -> TaskManagerModule ->
TaskSerializationModule

Requested by:
1  :
TaskSerializationModule.provideAdditionalInformationDTOModules(TaskSerializationModule.java:60)
      \_ for 1st parameter
     at
TaskSerializationModule.provideAdditionalInformationDTOModules(TaskSerializationModule.java:60)
      \_ installed by: Modules$OverrideModule -> Modules$CombinedModule ->
Modules$CombinedModule -> Modules$CombinedModule -> TaskManagerModule ->
TaskSerializationModule

Learn more:
  https://github.com/google/guice/wiki/MISSING_IMPLEMENTATION

2) [Guice/MissingImplementation]: No implementation for Set<TaskDTOModule<?
extends Task, ? extends TaskDTO>> was bound.

Did you mean?
    Set<TaskDTOModule<? extends Task, ? extends TaskDTO>> annotated with
@Named(value="task_dto") bound at
TaskSerializationModule.provideTaskDTOModules(TaskSerializationModule.java:83)
      \_ installed by: Modules$OverrideModule -> Modules$CombinedModule ->
Modules$CombinedModule -> Modules$CombinedModule -> TaskManagerModule ->
TaskSerializationModule

Requested by:
1  :
TaskSerializationModule.provideTaskDTOModules(TaskSerializationModule.java:83)
      \_ for 1st parameter
     at
TaskSerializationModule.provideTaskDTOModules(TaskSerializationModule.java:83)
      \_ installed by: Modules$OverrideModule -> Modules$CombinedModule ->
Modules$CombinedModule -> Modules$CombinedModule -> TaskManagerModule ->
TaskSerializationModule

If I only enable DataRoutesModules, the above error is not shown.

    private static final Module PROTOCOLS = Modules.combine(
        new ProtocolHandlerModule(),
        new SMTPServerModule(),
//        new WebAdminServerModule(),
        new DataRoutesModules(),
//        new MailRepositoriesRoutesModule(),
//        new MailQueueRoutesModule(),
//        new NoJwtModule(),
        new DefaultProcessorsConfigurationProviderModule(),
        new TaskManagerModule());

The DataRoutesModules however pull in spark-core via a dependency (and
therefore also jetty etc) which I would like to prevent.

What I do not understand is that it looks like
"Set<AdditionalInformationDTOModule<? extends
TaskExecutionDetails$AdditionalInformation, ? extends
AdditionalInformationDTO>>" is provided by TaskSerializationModule and
TaskSerializationModule is installed by TaskManagerModule. It therefore
looks like there is an implementation available.

Any suggestion on how I can complete remove the web admin (and it's
dependencies).

Kind regards,

Martijn Brinkers