package com.gzzn.omms.msgexchangeapi.service;

import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.ConcurrentLinkedQueue;

import org.springframework.stereotype.Service;

import com.gzzn.omms.msgexchangeapi.entity.msg.SCHD;
import com.gzzn.omms.msgexchangeapi.entity.msg.SCHD.FLTR;

/**
 * 要发到kafka 的消息，先在这里做缓存。
 * @author zhouxiunai
 *
 */
@Service("msgbufferservice")
public class MsgBufferService implements IMsgBufferService {
	private static ConcurrentLinkedQueue<SCHD.FLTR> fltrBuffer = new ConcurrentLinkedQueue<SCHD.FLTR>();  
	private static ConcurrentLinkedQueue<String> msgBuffer = new ConcurrentLinkedQueue<String>(); 
	
	@Override
	public void addFltr(SCHD.FLTR  fltr) {
		fltrBuffer.add(fltr);
	}

	@Override
	public void addMsg(String msg) {
		msgBuffer.add(msg);
	}

	@Override
	public List<FLTR> takeAllFltr() {
		if(fltrBuffer.size() <= 0)
		{
			return Collections.emptyList();
		}
		
		//
		FLTR[] fltrs = (FLTR[]) fltrBuffer.toArray(new FLTR[fltrBuffer.size()]); // TODO 转换出错
		fltrBuffer.clear();//to fix ,获取及清空过程中是否要加锁
		
		return Arrays.asList(fltrs);
	}

	@Override
	public List<String> takeAllMsg() {
		if(msgBuffer.size() <= 0)
		{
			return Collections.emptyList();
		}
		
		//
		String[] msgs = (String[]) msgBuffer.toArray();
		msgBuffer.clear();//to fix ,获取及清空过程中是否要加锁
		
		return Arrays.asList(msgs);
	}

}