Interface Tracer

Starts a new Span and calls the given function passing it the created span as first argument. Additionally the new span gets set in context and this context is activated for the duration of the function call.

Example

const something = tracer.startActiveSpan('op', span => {
      try {
        do some work
        span.setStatus({code: SpanStatusCode.OK});
        return something;
      } catch (err) {
        span.setStatus({
          code: SpanStatusCode.ERROR,
          message: err.message,
        });
        throw err;
      } finally {
        span.end();
      }
    });
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Example

const span = tracer.startActiveSpan('op', span => {
      try {
        do some work
        return span;
      } catch (err) {
        span.setStatus({
          code: SpanStatusCode.ERROR,
          message: err.message,
        });
        throw err;
      }
    });
    do some more work
    span.end();
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Starts a new Span. Start the span without setting it on context.

This method do NOT modify the current Context.

Example

const span = tracer.startSpan('op');
    span.setAttribute('key', 'value');
    span.end();
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