tracing

func ContextToHTTP ¶

func ContextToHTTP(ctx context.Context, tracer opentracing.Tracer, req *http.Request) (nReq *http.Request)

ContextToHTTP returns an http RequestFunc that injects an OpenTracing Span found in `ctx` into the http headers. If no such Span can be found, the RequestFunc is a noop.

func ExtractSpanFromCtx ¶

func ExtractSpanFromCtx(ctx context.Context) opentracing.Span

func ExtractTraceIDFromCtx ¶

func ExtractTraceIDFromCtx(ctx context.Context) string

func HTTPToContext ¶

func HTTPToContext(tracer opentracing.Tracer, req *http.Request, operationName string) context.Context

HTTPToContext returns an http RequestFunc that tries to join with an OpenTracing trace found in `req` and starts a new Span called `operationName` accordingly. If no trace could be found in `req`, the Span will be a trace root. The Span is incorporated in the returned Context and can be retrieved with opentracing.SpanFromContext(ctx).

func NewGlobalTracer ¶

func NewGlobalTracer(name string) (opentracing.Tracer, io.Closer, error)

func Open ¶

func Open(name string) (gin.HandlerFunc, io.Closer, error)

func OpenTracing ¶

func OpenTracing() gin.HandlerFunc