DefaultOptions returns default options.

FromContext returns a span from context.

Read the given trace.

ToContext saves the trace and span ids in the context.

DefaultSize of the buffer.

SpanTypeRequestInbound is a span created when serving a request.

SpanTypeRequestOutbound is a span created when making a service call.

DefaultTracer is the default tracer.

Span is used to record an entry.

Tracer is an interface for distributed tracing.

SpanType describe the nature of the trace span.