SpringCloud 可運(yùn)行和可調(diào)用

如果將邏輯包裝在Runnable或Callable中，則可以將這些類包裝在其Sleuth代表中，如以下Runnable的示例所示：

Runnable runnable = new Runnable() {
	@Override
	public void run() {
		// do some work
	}

	@Override
	public String toString() {
		return "spanNameFromToStringMethod";
	}
};
// Manual `TraceRunnable` creation with explicit "calculateTax" Span name
Runnable traceRunnable = new TraceRunnable(this.tracing, spanNamer, runnable,
		"calculateTax");
// Wrapping `Runnable` with `Tracing`. That way the current span will be available
// in the thread of `Runnable`
Runnable traceRunnableFromTracer = this.tracing.currentTraceContext()
		.wrap(runnable);

以下示例顯示了如何對Callable執(zhí)行此操作：

Callable<String> callable = new Callable<String>() {
	@Override
	public String call() throws Exception {
		return someLogic();
	}

	@Override
	public String toString() {
		return "spanNameFromToStringMethod";
	}
};
// Manual `TraceCallable` creation with explicit "calculateTax" Span name
Callable<String> traceCallable = new TraceCallable<>(this.tracing, spanNamer,
		callable, "calculateTax");
// Wrapping `Callable` with `Tracing`. That way the current span will be available
// in the thread of `Callable`
Callable<String> traceCallableFromTracer = this.tracing.currentTraceContext()
		.wrap(callable);

這樣，您可以確保為每個(gè)執(zhí)行創(chuàng)建并關(guān)閉新的跨度。