scirs2_metrics/optimization/distributed_advanced/consensus/
raft.rs

1//! Raft Consensus Algorithm Implementation
2//!
3//! Implementation of the Raft consensus algorithm for distributed optimization coordination.
4
5use crate::error::{MetricsError, Result};
6use serde::{Deserialize, Serialize};
7use std::collections::HashMap;
8use std::time::{Duration, Instant};
9
10/// Raft consensus implementation
11#[derive(Debug, Clone, Serialize, Deserialize)]
12pub struct RaftConsensus {
13    node_id: String,
14    current_term: u64,
15    voted_for: Option<String>,
16    log: Vec<LogEntry>,
17    state: RaftState,
18    peers: Vec<String>,
19}
20
21#[derive(Debug, Clone, Serialize, Deserialize)]
22pub enum RaftState {
23    Follower,
24    Candidate,
25    Leader,
26}
27
28#[derive(Debug, Clone, Serialize, Deserialize)]
29pub struct LogEntry {
30    term: u64,
31    index: u64,
32    data: Vec<u8>,
33}
34
35impl RaftConsensus {
36    pub fn new(node_id: String, peers: Vec<String>) -> Self {
37        Self {
38            node_id,
39            current_term: 0,
40            voted_for: None,
41            log: Vec::new(),
42            state: RaftState::Follower,
43            peers,
44        }
45    }
46
47    pub fn start_election(&mut self) -> Result<()> {
48        self.current_term += 1;
49        self.state = RaftState::Candidate;
50        self.voted_for = Some(self.node_id.clone());
51        Ok(())
52    }
53
54    pub fn append_entries(&mut self, entries: Vec<LogEntry>) -> Result<bool> {
55        self.log.extend(entries);
56        Ok(true)
57    }
58
59    pub fn request_vote(&mut self, candidate_id: String, term: u64) -> Result<bool> {
60        if term > self.current_term {
61            self.current_term = term;
62            self.voted_for = Some(candidate_id);
63            Ok(true)
64        } else {
65            Ok(false)
66        }
67    }
68}
scirs2_metrics/optimization/distributed_advanced/consensus/raft.rs

scirs2_metrics/optimization/distributed_advanced/consensus/
raft.rs
