封装的executeTask用以cv

项目场景：

多线程请求数据

---

代码

    private <T>List<T>  executeTask(List<Callable> c){
        ExecutorService executorService = Executors.newFixedThreadPool(8);
        List<Future> priceFutureList = new ArrayList<>();
        for (Callable callable : c) {
            priceFutureList.add(executorService.submit(callable));
        }
        ArrayList<T> l = new ArrayList<>();
        for (Future f : priceFutureList) {
            try {
                l.add((T) f.get());
            } catch (InterruptedException | ExecutionException e) {
                throw new RuntimeException(e);
            }
        }
        executorService.shutdown();
        return l;
    }

@Data
@AllArgsConstructor
@NoArgsConstructor
@Slf4j
public class PrometheusCallable implements Callable {

    private PrometheusProxyService m;
    private PromQLEnum promQLEnum;
    private String  instance;
    private String  prometheusID;

    @Override
    public Map<String,Integer> call() {
        JsonObject ql = m.excutePromQL(promQLEnum, instance, prometheusID);
        HashMap<String, Integer> map = new HashMap<>();
        // TODO  有可能没有获取到label
        try {
            map.put(prometheusID,ql.get("data").getAsJsonObject().get("result").getAsJsonArray().get(0).getAsJsonObject().get("value").getAsJsonArray().get(1).getAsInt());
        }catch (Exception e){
            log.error("解析prometheus指标数据异常,异常参数,{}",ql);
        }
        return map;
    }
}

获取数据

        ArrayList<Callable> prometheusObjs = new ArrayList<>();
        new ArrayList<>(this.GetPrometheusMap().values()).forEach(s -> {
            prometheusObjs.add(new PrometheusCallable(prometheusProxyService,PromQLEnum.PROBE_SUCCESS,ipRegex,s));
        });
        List<Map<String,Integer>> l = this.executeTask(prometheusObjs);
        //丑陋的写法
        /*Map<String, Integer> map = l.stream().filter(Objects::nonNull).collect(Collectors.toList()).stream().filter(
                stringIntegerMap -> !stringIntegerMap.isEmpty()
        ).collect(Collectors.toMap(
                s -> (String)s.keySet().toArray()[0],
                a -> (Integer)a.values().toArray()[0]
        ));*/
        HashMap<String, Integer> map = new HashMap<>();
        l.stream().filter(Objects::nonNull).collect(Collectors.toList()).forEach(map::putAll);
        list.forEach( promModel ->  promModel.setStatus(map.containsKey(this.GetPrometheusMap().get(promModel.getApplicationName()))?
             map.get(this.GetPrometheusMap().get(promModel.getApplicationName())).toString():""));

this.GetPrometheusMap()//是一个映射,只是copy下来项目代码