// TestTeeTracerSpanRefs verifies that ChildOf/FollowsFrom relations are
// reflected correctly in the underlying spans.
func TestTeeTracerSpanRefs(t *testing.T) {
r1 := basictracer.NewInMemoryRecorder()
t1 := basictracer.NewWithOptions(basictracer.Options{
Recorder: r1,
ShouldSample: func(traceID uint64) bool { return true }, // always sample
})
r2 := basictracer.NewInMemoryRecorder()
t2 := basictracer.NewWithOptions(basictracer.Options{
Recorder: r2,
ShouldSample: func(traceID uint64) bool { return true }, // always sample
})
tr := NewTeeTracer(t1, t2)
root := tr.StartSpan("x")
child := tr.StartSpan("x", opentracing.ChildOf(root.Context()))
child.Finish()
root.Finish()
for _, spans := range [][]basictracer.RawSpan{r1.GetSpans(), r2.GetSpans()} {
if e, a := 2, len(spans); a != e {
t.Fatalf("expected %d, got %d", e, a)
}
if e, a := spans[0].Context.TraceID, spans[1].Context.TraceID; a != e {
t.Errorf("expected %d, got %d", e, a)
}
if e, a := spans[1].Context.SpanID, spans[0].ParentSpanID; a != e {
t.Errorf("expected %d, got %d", e, a)
}
}
}
func TestTeeTracer(t *testing.T) {
r1 := basictracer.NewInMemoryRecorder()
t1 := basictracer.NewWithOptions(basictracer.Options{
Recorder: r1,
ShouldSample: func(traceID uint64) bool { return true }, // always sample
})
r2 := basictracer.NewInMemoryRecorder()
t2 := basictracer.NewWithOptions(basictracer.Options{
Recorder: r2,
ShouldSample: func(traceID uint64) bool { return true }, // always sample
})
tr := NewTeeTracer(t1, t2)
span := tr.StartSpan("x")
span.LogKV("k1", "v1", "k2", "v2")
span.SetTag("tag", "value")
span.SetBaggageItem("baggage", "baggage-value")
if e, a := "baggage-value", span.BaggageItem("baggage"); a != e {
t.Errorf("expected %s, got %s", e, a)
}
spanCtx := span.Context()
var ctxBuffer bytes.Buffer
if err := tr.Inject(spanCtx, opentracing.Binary, &ctxBuffer); err != nil {
t.Fatal(err)
}
decodedCtx, err := tr.Extract(opentracing.Binary, &ctxBuffer)
if err != nil {
t.Fatal(err)
}
span2 := tr.StartSpan("y", opentracing.FollowsFrom(decodedCtx))
span2.LogEvent("event2")
if e, a := "baggage-value", span2.BaggageItem("baggage"); a != e {
t.Errorf("expected %s, got %s", e, a)
}
span.Finish()
span2.Finish()
for _, spans := range [][]basictracer.RawSpan{r1.GetSpans(), r2.GetSpans()} {
if e, a := 2, len(spans); a != e {
t.Fatalf("expected %d, got %d", e, a)
}
if e, a := "x", spans[0].Operation; a != e {
t.Errorf("expected %s, got %s", e, a)
}
if e, a := (opentracing.Tags{"tag": "value"}), spans[0].Tags; !reflect.DeepEqual(a, e) {
t.Errorf("expected %s, got %s", e, a)
}
if e, a := "k1:v1", spans[0].Logs[0].Fields[0].String(); a != e {
t.Errorf("expected %s, got %s", e, a)
}
if e, a := "k2:v2", spans[0].Logs[0].Fields[1].String(); a != e {
t.Errorf("expected %s, got %s", e, a)
}
if e, a := 1, len(spans[0].Context.Baggage); a != e {
t.Errorf("expected %d, got %d", e, a)
}
if e, a := "y", spans[1].Operation; a != e {
t.Errorf("expected %s, got %s", e, a)
}
if e, a := opentracing.Tags(nil), spans[1].Tags; !reflect.DeepEqual(a, e) {
t.Errorf("expected %s, got %s", e, a)
}
if e, a := "event:event2", spans[1].Logs[0].Fields[0].String(); a != e {
t.Errorf("expected %s, got %s", e, a)
}
if e, a := 1, len(spans[1].Context.Baggage); a != e {
t.Errorf("expected %d, got %d", e, a)
}
}
}