Method onTimer

ZezeJava/ZezeJava/src/main/java/Zeze/Raft/Raft.java:521–554

每个Raft使用一个固定Timer，根据不同的状态执行相应操作。 【简化】不同状态下不管维护管理不同的Timer了。

()

	 * 【简化】不同状态下不管维护管理不同的Timer了。
	 */
	private void onTimer() throws Exception {
		lock();
		try {
			if (isShutdown)
				return;
			long now = System.currentTimeMillis();
			switch (getState()) {
			case Follower:
				if (now - logSequence.getLeaderActiveTime() > raftConfig.getElectionTimeout()) {
					logger.warn("LeaderLostTimeout: {} > {}", now - logSequence.getLeaderActiveTime(), raftConfig.getElectionTimeout());
					convertStateTo(RaftState.Candidate);
				}
				break;
			case Candidate:
				if (now > nextVoteTime)
					convertStateTo(RaftState.Candidate); // vote timeout. restart
				break;
			case Leader:
				server.getConfig().forEachConnector(c -> {
					var cex = (Server.ConnectorEx)c;
					if (now - cex.getHeartbeatTime() > raftConfig.getLeaderHeartbeatTimer())
						logSequence.sendHeartbeatTo(cex);
				});
				break;
			}
			if (++lowPrecisionTimer > 1000) {
				lowPrecisionTimer = 0;
				onLowPrecisionTimer();
			}
		} finally {
			unlock();
			//timerTask = Task.scheduleUnsafe(10, this::onTimer);
		}
	}

	private void onLowPrecisionTimer() throws ParseException, RocksDBException {
		server.getConfig().forEachConnector(Connector::start); // Connector Reconnect Bug?