[OAK-4803] Simplify the client side of the cold standby

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: Segment Tar 0.0.12
• Component/s: segment-tar
• Assignee: Francesco Mari
• Reporter: Francesco Mari
• Created: 14/Sep/16 11:58
• Updated: 10/Oct/16 09:49
• Resolved: 15/Sep/16 14:04

Description

The implementation of the cold standby client is overly and unnecessarily complicated. It would be way clearer to separate the client code in two major components: a simple client responsible for sending messages to and receive responses from the standby server, and the synchronization algorithm used to read data from the server and to save read data in the local FileStore.

Moreover, the client simple client could be further modularised by encapsulating request encoding, response decoding and message handling into their own Netty handlers.

Issue Links

• blocks: OAK-4673 Segment Tar should implement a cold standby functionality