trace

func GetTraceID ¶

func GetTraceID(ctx context.Context) (traceID string)

GetTraceID 查询 trace_id

func InjectTraceHeader ¶

func InjectTraceHeader(ctx opentracing.SpanContext, req *http.Request)

InjectTrace 注入 OpenTracing 头信息

func StartSpanFromContext ¶

func StartSpanFromContext(ctx context.Context, operationName string, opts ...opentracing.StartSpanOption) (opentracing.Span, context.Context)

StartSpanFromContext starts and returns a Span with `operationName`, using any Span found within `ctx` as a ChildOfRef. If no such parent could be found, StartSpanFromContext creates a root (parentless) Span.

The second return value is a context.Context object built around the returned Span.

Example usage:

SomeFunction(ctx context.Context, ...) {
    sp, ctx := opentracing.StartSpanFromContext(ctx, "SomeFunction")
    defer sp.Finish()
    ...
}

func StartSpanServerHTTP ¶

func StartSpanServerHTTP(r *http.Request, operation string) (req *http.Request, span opentracing.Span)

StartSpanServerHTTP 启动http服务的span

func Stop ¶

func Stop()

Stop 停止 trace 协程