Executor，ExecutorService和ScheduledExecutorService

我们提供LazyTraceExecutor，TraceableExecutorService和TraceableScheduledExecutorService。每次提交，调用或调度新任务时，这些实现都将创建Spans。

在这里，您可以看到使用CompletableFuture使用TraceableExecutorService传递跟踪信息的示例：

CompletableFuture<Long> completableFuture = CompletableFuture.supplyAsync(() -> {

// perform some logic

return 1_000_000L;

}, new TraceableExecutorService(executorService,

// 'calculateTax' explicitly names the span - this param is optional

tracer, traceKeys, spanNamer, "calculateTax"));