GpsBeforeBuffer.java
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package com.bsth.client;
import com.bsth.entity.GpsEntity;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.*;
/**
* 从 socket client 到调度系统 的缓冲
* Created by panzhao on 2017/5/4.
*/
@Component
@Order(2)
public class GpsBeforeBuffer implements CommandLineRunner{
static ConcurrentLinkedQueue<GpsEntity> linkedList = new ConcurrentLinkedQueue();
static final int MAX_SIZE = 4000 * 20;
static int size = 0;
public void put(GpsEntity gps){
try {
if(gps == null)
return;
if(StringUtils.isBlank(gps.getDeviceId()))
return;
linkedList.add(gps);
size++;
}catch (Exception e){
log.error("", e);
}
}
static Logger log = LoggerFactory.getLogger(GpsBeforeBuffer.class);
public static List<GpsEntity> pollAll(){
List<GpsEntity> rs = new ArrayList<>(300);
GpsEntity gps;
while (true){
gps = linkedList.poll();
if(gps == null){
size = 0;
break;
}
rs.add(gps);
}
log.info("poll size: " + rs.size() + " -current size: " + size);
return rs;
}
/**
* 清理数据，保持最大 MAX_SIZE 个数的元素
*/
public static void clear(){
if(size <= MAX_SIZE)
return;
int len = size - MAX_SIZE;
for(int j = 0; j < len; j++){
linkedList.poll();
size--;
}
log.info("clear size: " + len + " -current size: " + size);
}
@Autowired
BufferSizeCheck bufferSizeCheck;
@Autowired
SizeCheck sizeCheck;
ScheduledExecutorService sexec = Executors.newScheduledThreadPool(2);
@Override
public void run(String... strings) throws Exception {
sexec.scheduleWithFixedDelay(bufferSizeCheck, 60, 30, TimeUnit.SECONDS);
sexec.scheduleWithFixedDelay(sizeCheck, 60, 60 * 5, TimeUnit.SECONDS);
}
@Component
public static class BufferSizeCheck extends Thread {
@Override
public void run() {
GpsBeforeBuffer.clear();
}
}
@Component
public static class SizeCheck extends Thread{
@Override
public void run() {
log.info("[SizeCheck] linkedList real size: " + linkedList.size() + " -current size: " + size);
}
}
}