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package com.jd.blockchain.consensus.service;

import java.io.InputStream;
import java.util.Iterator;

/**
 * 状态机复制接口;
 * 
 * @author huanghaiquan
 *
 */
public interface StateMachineReplicate {

	/**
	 * 获取最新的状态编号;
* * 注:新的状态编号总数比旧的状态编号大; * * @return */ long getLatestStateID(String realmName); /** * 返回指定状态编号的快照; * * @param stateId * @return */ StateSnapshot getSnapshot(String realmName, long stateId); /** * 返回包含指定的起止状态编号在内的全部状态快照; * * @param fromStateId * 起始的状态编号(含); * @param toStateId * 截止的状态编号(含); * @return */ Iterator getSnapshots(String realmName, long fromStateId, long toStateId); /** * 读状态数据; * * @param stateId * @return */ InputStream readState(String realmName, long stateId); /** * 装载状态数据; * * @param snapshot * @param state */ void setupState(String realmName, StateSnapshot snapshot, InputStream state); }




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