tracing

Documentation

Index

• func ContextToHTTP(ctx context.Context, tracer opentracing.Tracer, req *http.Request) (nReq *http.Request)
• func ExtractSpanFromCtx(ctx context.Context) opentracing.Span
• func ExtractTraceIDFromCtx(ctx context.Context) string
• func HTTPToContext(tracer opentracing.Tracer, req *http.Request, operationName string) context.Context
• func NewGlobalTracer(name string) (opentracing.Tracer, io.Closer, error)
• func Open(name string) (gin.HandlerFunc, io.Closer, error)
• func OpenTracing() gin.HandlerFunc

Functions

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