ClientAddContextTags returns a context with specified opentracing tags, which are used by UnaryClientInterceptor/StreamClientInterceptor when creating a new span.

StreamClientInterceptor returns a new streaming client interceptor for OpenTracing.

StreamServerInterceptor returns a new streaming server interceptor for OpenTracing.

UnaryClientInterceptor returns a new unary client interceptor for OpenTracing.

UnaryServerInterceptor returns a new unary server interceptor for OpenTracing.

WithFilterFunc customizes the function used for deciding whether a given call is traced or not.

WithTracer sets a custom tracer to be used for this middleware, otherwise the opentracing.GlobalTracer is used.

FilterFunc allows users to provide a function that filters out certain methods from being traced.