如何在当前 Context 中设置 Span Context？

Question

在opentelemetery-api版本0.8.0中，我们曾经通过以下代码在当前Context中设置一个新的SpanContext：

TracingContextUtils.currentContextWith(DefaultSpan.create(newSpanCtx))

但是，在版本 0.13.1 中，- TracingContextUtils 和 DefaultSpan 都被删除了。那如何在当前的Context中设置一个新的SpanContext呢？

Answer 1

来自 opentelemetry-java version 0.10.0 release notes:

TracingContextUtils and BaggageUtils were removed from the public API. Instead, use the appropriate static methods on the Span and Baggage classes, or use methods on the Context itself.

DefaultSpan was removed from the public API. Instead, use Span.wrap(spanContext) if you need a non-functional span that propagates the trace context.

您可以尝试类似的方法：

val newSpanCtx: SpanContext = null
val span: Span = Span.wrap(newSpanCtx)
Context.current().`with`(span).makeCurrent()

Answer 2

如何使用 scope 并调用 makeCurrent 方法？

Span span = tracer.spanBuilder("my span").startSpan();
// put the span into the current Context
try (Scope scope = span.makeCurrent()) {
    // your use case
    ...
} catch (Throwable t) {
    span.setStatus(StatusCode.ERROR, "Change it to your error message");
} finally {
    span.end(); // closing the scope does not end the span, this has to be done manually
}

这也是 quickstart 的说法。

如何在当前 Context 中设置 Span Context？

How to set Span Context in current Context?

java

scala

open-telemetry