AllowPropagation instructs the tracer to allow or deny propagation of the span context between this instrumented client or service and its peers.

GRPCServerTrace enables native Zipkin tracing of a Go kit gRPC transport Server.

Logger adds a Go kit logger to our Zipkin Middleware to log SpanContext extract / inject errors if they occur.

Name sets the name for an instrumented transport endpoint.

RequestSampler allows one to set the sampling decision based on the details found in the http.Request.

Tags adds default tags to our Zipkin transport spans.

TracerOption allows for functional options to our Zipkin tracing middleware.