[KNOX-1789] Refactor RemoteAliasService to use service loading

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.3.0
• Assignee: Kevin Risden
• Reporter: Kevin Risden
• Created: 21/Feb/19 15:31
• Updated: 21/Oct/19 14:25
• Resolved: 02/Mar/19 18:01

Description

Currently RemoteAliasService is setup to only have a Zookeeper implementation. It would be better to make this generic with service loading and configuration. This would allow plugging in different Remote alias implementations.

Issue Links

• causes: KNOX-1851 NPE on startup when Zookeeper Remote Alias Service is configured
• causes: KNOX-1848 Default to 'zookeeper' as remote alias configuration type in case it is not set in gateway-site.xml
• depends upon: KNOX-1792 AliasService start should only be called once in DefaultGatewayServices
• is depended upon by: KNOX-1687 Hashicorp Vault RemoteAliasService provider
• links to: GitHub Pull Request #59