Returns the active span context — get_active_span

This is sometimes useful for logs or metrics, to associate logging and metrics reporting with traces.

Usage

get_active_span_context()

Value

The active span context, an otel_span_context object. If there is no active span context, then an invalid span context is returned, i.e. spc$is_valid() will be FALSE for the returned spc.

Details

Note that logs and metrics instruments automatically use the current span context, so often you don't need to call this function explicitly.

Examples

fun <- function() {
  otel::start_local_active_span("fun")
  fun2()
}
fun2 <- function() {
  otel::log("Log message", span_context = otel::get_active_span_context())
}
fun()