同步算法 云服务器

import random
import time

class Node:
    def __init__(self, node_id):
        self.node_id = node_id
        self.state = 'follower'
        self.current_term = 0
        self.voted_for = None
        self.log = []
        self.commit_index = 0
        self.last_applied = 0
        self.next_index = {}
        self.match_index = {}

    def start_election(self):
        # 简化版选举逻辑
        pass

    def append_entries(self, leader_term, prev_log_index, prev_log_term, entries, leader_commit):
        # 简化版日志复制逻辑
        pass

# 模拟云服务器集群中的节点交互
nodes = [Node(i) for i in range(5)]
for node in nodes:
    node.next_index = {n.node_id: len(node.log) for n in nodes if n.node_id != node.node_id}
    node.match_index = {n.node_id: 0 for n in nodes if n.node_id != node.node_id}

# 模拟领导者选举和日志复制过程
while True:
    for node in nodes:
        if node.state == 'follower':
            # 模拟心跳超时，开始选举
            node.start_election()
        elif node.state == 'leader':
            # 模拟领导者发送心跳和日志复制请求
            for follower_id in node.next_index:
                node.append_entries(node.current_term, ...)

    time.sleep(random.uniform(0.1, 0.5))