[HDDS-3621] Separate client/server/admin proto files of HDDS to separated subprojects

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.0.0
• Labels: pull-request-available
• Target Version/s: 1.0.0
• Assignee: Marton Elek
• Reporter: Marton Elek
• Created: 19/May/20 13:15
• Updated: 05/Jun/20 13:38
• Resolved: 05/Jun/20 13:38

Description

As described in the parent Jira admin/client/server protocols need different compatibility guarantees. It's better to separate them to separated maven project to make it easy to follow the changes.

I propose to create 3 new projects

hadoop-hdds/interface-client
hadoop-hdds/interface-server
hadoop-hdds/interface-admin

I called it -interface instead of -proto because we can include some basic Java classes not just proto files (for example utilities to serialize/deserialize proto files)

This first patch will include only the move without refactoring any RPC. While the new proto file names represent the proposed naming convention (Datanode/Scm + Server/Client/Admin + additional postfix) the name of the generated classes and the name of the RPC interfaces (Client/Server translator) not yet renamed to make the patch small.

Also: some methods should be moved between admin/server but it can be done in separated issue to make it easier to follow the change.

Issue Links

• links to: GitHub Pull Request #949