Package tracing_middleware tracing is a "parent" package for gRPC logging middlewares.

ContextWithTracer returns a new `context.Context` that holds a reference to given opentracing.Tracer.

CopyTraceContext copies the necessary trace context from given source context to target context.

Utility function for use with tests in pkg/tracing.

DoInSpan executes function doFn inside new span with `operationName` name and hooking as child to a span found within given context if any.

DoInSpanWithErr executes function doFn inside new span with `operationName` name and hooking as child to a span found within given context if any.

DoWithSpan executes function doFn inside new span with `operationName` name and hooking as child to a span found within given context if any.

HTTPMiddleware returns an HTTP handler that injects the given tracer and starts a new server span.

HTTPTripperware returns HTTP tripper that assumes given span in context as client child span and injects it into the wire.

StartSpan starts and returns span with `operationName` and hooking as child to a span found within given context if any.

StreamClientInterceptor returns a new streaming client interceptor for OpenTracing.

StreamServerInterceptor returns a new streaming server interceptor for OpenTracing and injects given tracer.

UnaryClientInterceptor returns a new unary client interceptor for OpenTracing.

UnaryServerInterceptor returns a new unary server interceptor for OpenTracing and injects given tracer.

ForceTracingBaggageKey is a request header name that forces tracing sampling.

Tracer interface to provide GetTraceIDFromSpanContext method.