[IGNITE-14149] Implement the raft facade

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha2
• Labels: iep-61 ignite-3
• Release Note: Implemented RAFT client module.
• Assignee: Alexey Scherbakov
• Reporter: Alexey Scherbakov
• Created: 09/Feb/21 15:56
• Updated: 26/Mar/21 14:16
• Resolved: 26/Mar/21 14:13

Description

We need the raft facade API.

It should include:

1. Raft group management: add/remove peers, learners, etc.
2. Submitting a task to a raft group leader.
3. State machine abstraction.
4. Linearizable reading from the raft group.
5. Snapshot abstraction.

The goal is to make it compatible with different raft implementations until the choice is finalized.

Issue Links

• requires: IGNITE-14279 Introduce "sendWithResponse" into network API
• links to: GitHub Pull Request #59