close #343

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

tracer/options.go

@@ -83,9 +83,11 @@ func (sk SpanKind) String() string {
 
 // SpanOptions contains span option
 type SpanOptions struct {
-	Labels []interface{}
-	Kind   SpanKind
-	Record bool
+	StatusMsg string
+	Labels    []interface{}
+	Status    SpanStatus
+	Kind      SpanKind
+	Record    bool
 }
 
 // SpanOption func signature
@@ -111,6 +113,13 @@ func WithSpanLabels(kv ...interface{}) SpanOption {
 	}
 }
 
+func WithSpanStatus(st SpanStatus, msg string) SpanOption {
+	return func(o *SpanOptions) {
+		o.Status = st
+		o.StatusMsg = msg
+	}
+}
+
 func WithSpanKind(k SpanKind) SpanOption {
 	return func(o *SpanOptions) {
 		o.Kind = k

tracer/tracer.go

@@ -44,6 +44,8 @@ type Tracer interface {
 	Init(...Option) error
 	// Start a trace
 	Start(ctx context.Context, name string, opts ...SpanOption) (context.Context, Span)
+	// Extract get span metadata from context
+	// Extract(ctx context.Context)
 	// Flush flushes spans
 	Flush(ctx context.Context) error
 }