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2024-08-14 dedaaf738a1d483b4594d46622eaa9791f7e5bcd

 websocketSerivce/src/main/java/org/example/task/KucoinStock.java

@@ -1,9 +1,112 @@
package org.example.task;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.CollectionUtils;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.reflect.TypeToken;
import com.google.gson.Gson;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.example.common.MarketDataClient;
import org.example.pojo.Currency;
import org.example.pojo.bo.CurrencyKucoin;
import org.example.server.impl.CurrencySerivceImpl;
import org.example.util.ConverterUtil;
import org.example.util.RedisUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import java.util.stream.Collectors;

/**
 * @program: demo
 * @description: kucoin交易所
 * @create: 2024-07-15 17:23
 **/
@Component
@Slf4j
public class KucoinStock {

    @Autowired
    private CurrencySerivceImpl currencyService;

    private final Lock syncCurrencyLock = new ReentrantLock();

    /**
     * 同步kucoin交易所交易对
     */
    @Scheduled(cron = "0 0/35 * * * ?")
//    @Scheduled(cron = "0/10 * * * * ?")
    public void syncCurrency() {
        //  使用Lock来确保同步
        syncCurrencyLock.lock();
        log.info("【同步kucoin交易所交易对】---->开始");
        try {
            sync();
        } catch (Exception e) {
            log.error("【同步kucoin交易所交易对】出现异常:    " + e.getMessage());
            e.printStackTrace();
        } finally {
            syncCurrencyLock.unlock();
            log.info("【同步kucoin交易所交易对】---->结束");
        }
    }

    public void sync() throws JsonProcessingException {
        //  调用外部接口获取数据
        String json = MarketDataClient.doGet("https://api.kucoin.com/api/v2/symbols");

        //  对返回数据格式进行校验
        if (json != null && !json.isEmpty()) {
            ObjectMapper objectMapper = new ObjectMapper();
            Map<String, Object> map = objectMapper.readValue(json, new TypeReference<Map<String, Object>>() {});
            String symbolsJson = objectMapper.writeValueAsString(map.get("data"));
            Gson gson = new Gson();
            List<CurrencyKucoin> getList = gson.fromJson(symbolsJson, new TypeToken<List<CurrencyKucoin>>() {
            }.getType());

            getList.parallelStream().forEach(person -> person.setSymbol(StringUtils.remove(person.getSymbol(), "-")));
            List<Currency> dbList = currencyService.list(new LambdaQueryWrapper<Currency>().eq(Currency::getSource, "kucoin"));
            Set<String> symbolSet = dbList.stream().map(Currency::getSymbol).collect(Collectors.toSet());
            List<Currency> removeList = dbList.stream()
                    .filter(currency -> !symbolSet.contains(currency.getSymbol()))
                    .collect(Collectors.toList());

            if(CollectionUtils.isNotEmpty(removeList)){
                removeList.forEach(f->{
                    RedisUtil.delete("kucoin"+f.getSymbol());
                });
            }

            currencyService.remove(new LambdaQueryWrapper<Currency>().eq(Currency::getSource,"kucoin"));

            //  比对接口返回的数据和数据库中已有的数据，找出新增的数据
            List<Currency> saveList = getList.stream()
                    .map(currency -> {
                        Currency newCurrency = new Currency();
                        newCurrency.setSymbol(currency.getSymbol());
                        newCurrency.setBaseAsset(currency.getBaseCurrency());
                        newCurrency.setQuoteAsset(currency.getQuoteCurrency());
                        newCurrency.setSource(currency.getSource());
                        return newCurrency;
                    })
                    .collect(Collectors.toList());

            //  批量保存新增数据到数据库
            if(CollectionUtils.isNotEmpty(saveList)){
                currencyService.saveBatch(saveList);
            }
        } else {
            log.info("外部接口返回数据为空");
        }
    }

}