middleware

Documentation

Index

• func Panic(h http.Handler) http.Handler
• func Tracing(h http.Handler) http.Handler
• func WithTracingOpName(ctx context.Context, opName string) context.Context

Functions

func Panic

func Panic(h http.Handler) http.Handler

Panic logs any panics. For now, we're continue throwing the panic up the stack so this may crash the process.

func Tracing

func Tracing(h http.Handler) http.Handler

Tracing creates a new span named after the URL path of the request. It places this span in the request context, for use by other handlers via opentracing.SpanFromContext() If a span exists in request headers, the span created by this middleware will be a child of that span.

func WithTracingOpName

func WithTracingOpName(ctx context.Context, opName string) context.Context

WithTracingOpName adds the op name to a context for use by the tracing library. It uses a pointer because it's called below in the stack and the only way to pass the info up is to have it a set a pointer. Even though it doesn't change the context we still have this return a context to maintain the illusion.