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wangw
2025-12-30 15:05:06 +08:00
parent 93b2309fcd
commit dc7146942b
10 changed files with 141 additions and 319 deletions
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10
cash-service/account-service/src/main/java/com/czg/service/account/service/impl/CallTableServiceImpl.java
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@@ -14,9 +14,9 @@ import com.czg.config.RedisCst;
import com.czg.constants.ParamCodeCst;
import com.czg.exception.CzgException;
import com.czg.resp.CzgResult;
import com.czg.service.RedisService;
import com.czg.service.account.mapper.CallQueueMapper;
import com.czg.service.account.mapper.CallTableMapper;
import com.czg.service.account.util.FunUtil;
import com.czg.service.account.util.WechatMiniMsgUtil;
import com.czg.system.dto.SysParamsDTO;
import com.czg.system.service.SysParamsService;
@@ -51,10 +51,10 @@ public class CallTableServiceImpl extends ServiceImpl<CallTableMapper, CallTable
@Resource
private ShopUserService shopUserService;
@Resource
private FunUtil funUtil;
@Resource
private StringRedisTemplate stringRedisTemplate;
@Resource
private RedisService redisService;
@Resource
private ShopInfoService shopInfoService;
@Resource
private CallConfigService callConfigService;
@@ -228,13 +228,13 @@ public class CallTableServiceImpl extends ServiceImpl<CallTableMapper, CallTable
}
private String getCallNumber(Long shopId, CallTable callTable) {
return funUtil.runFunAndCheckKey(() -> {
return redisService.runFunAndCheckKey(() -> {
String callNumKey = RedisCst.getTableCallNumKey(shopId, callTable.getId());
String value = stringRedisTemplate.opsForValue().get(callNumKey);
AtomicReference<String> newVal = new AtomicReference<>("");
// 初始化
if (StrUtil.isBlank(value)) {
Boolean setFlag = FunUtil.runFunAndRetry(() -> stringRedisTemplate.opsForValue().setIfAbsent(callNumKey, callTable.getStart().toString()), flag -> !flag,
Boolean setFlag = RedisService.runFunAndRetry(() -> stringRedisTemplate.opsForValue().setIfAbsent(callNumKey, callTable.getStart().toString()), flag -> !flag,
_ -> newVal.set(stringRedisTemplate.opsForValue().get(callNumKey)));
if (setFlag) {

1
cash-service/account-service/src/main/java/com/czg/service/account/service/impl/ShopUserServiceImpl.java
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@@ -22,7 +22,6 @@ import com.czg.market.vo.InviteUserVO;
import com.czg.market.vo.MemberConfigVO;
import com.czg.order.entity.OrderInfo;
import com.czg.service.account.mapper.ShopUserMapper;
import com.czg.service.account.util.FunUtil;
import com.czg.utils.FunUtils;
import com.czg.utils.PageUtil;
import com.github.pagehelper.PageHelper;

100
cash-service/account-service/src/main/java/com/czg/service/account/util/FunUtil.java
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@@ -1,100 +0,0 @@
package com.czg.service.account.util;
import jakarta.annotation.Resource;
import lombok.extern.slf4j.Slf4j;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.script.DefaultRedisScript;
import org.springframework.stereotype.Component;
import java.util.Collections;
import java.util.concurrent.TimeUnit;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Supplier;
/**
* @author Administrator
*/
@Slf4j
@Component
public class FunUtil {
@Resource
private RedisTemplate<String, Object> redisTemplate;
public static int retryCount = 5;
/**
* 执行任务并保证锁唯一
* @param supplier 业务逻辑
* @param lockKey Redis锁的Key
* @return 业务逻辑返回值
*/
public <T> T runFunAndCheckKey(Supplier<T> supplier, String lockKey) {
String lockValue = String.valueOf(System.nanoTime() + Thread.currentThread().threadId());
try {
// 尝试获取锁，超时时间 5 秒，防止死锁
boolean lock = Boolean.TRUE.equals(redisTemplate.opsForValue().setIfAbsent(lockKey, lockValue, 5, TimeUnit.SECONDS));
int count = 0;
// 初始等待 10ms
int retryDelay = 10;
while (!lock) {
// 最多重试 10 次，大约 10 秒
if (count++ > 50) {
throw new RuntimeException("系统繁忙, 稍后再试");
}
Thread.sleep(retryDelay);
// 指数退避，最大等待 200ms
retryDelay = Math.min(retryDelay * 2, 200);
lock = Boolean.TRUE.equals(redisTemplate.opsForValue().setIfAbsent(lockKey, lockValue, 5, TimeUnit.SECONDS));
}
// 执行任务
return supplier.get();
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new RuntimeException("线程被中断", e);
} catch (Exception e) {
log.error("执行出错：{}", e.getMessage(), e);
throw e;
} finally {
// 释放锁（使用 Lua 脚本确保原子性）
unlock(lockKey, lockValue);
}
}
/**
* 使用 Lua 脚本确保释放锁的原子性
* @param lockKey 锁的 Key
* @param lockValue 当前线程的锁值
*/
private void unlock(String lockKey, String lockValue) {
String luaScript =
"if redis.call('get', KEYS[1]) == ARGV[1] then " +
"return redis.call('del', KEYS[1]) " +
"else return 0 end";
redisTemplate.execute(new DefaultRedisScript<>(luaScript, Long.class),
Collections.singletonList(lockKey), lockValue);
}
public static <T, R> R runFunAndRetry(
Supplier<R> function,
Function<R, Boolean> check, Consumer<R> errFun) {
log.info("工具类开始执行函数");
R result = function.get();
boolean flag = check.apply(result);
log.info("执行结果: {}", result);
while (flag && retryCount-- > 0) {
log.info("执行函数失败, 剩余尝试次数{}", retryCount);
result = function.get();
log.info("执行结果: {}", result);
flag = check.apply(result);
}
if (flag) {
errFun.accept(result);
}
return result;
}
}