[RATIS-1091] Refactor RaftClient APIs

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Component/s: client
• Assignee: Tsz-wo Sze
• Reporter: Tsz-wo Sze
• Created: 12/Oct/20 10:29
• Updated: 05/Aug/22 17:39
• Resolved: 05/Aug/22 17:39

Description

The methods in RaftClient fall into different categories

1. group management: groupAdd, groupRemove, getGroupList and getGroupInfo
2. blocking methods: send, sendReadOnly, sendStaleRead and sendWatch
3. async methods: sendAsync, sendReadOnlyAsync, sendStaleReadAsync and sendWatchAsync

It is better to move the related methods to its own interfaces such as

1. GroupManagementApi
2. BlockingApi
3. AsyncApi

Sub-Tasks

• Move the group management methods from RaftClient to a new interface: Resolved
• Move blocking methods from RaftClient to a new BlockingApi interface: Resolved
• Move async methods from RaftClient to a new AsyncApi interface: Resolved
• Move the related methods from RaftClientImpl to the corresponding impls: Resolved