func TestSpanPropagator(t *testing.T) {
const op = "test"
recorder := testutils.NewInMemoryRecorder()
tracer := standardtracer.New(recorder)
sp := tracer.StartTrace(op)
sp.SetTraceAttribute("foo", "bar")
textCtx, textAttrs := tracer.PropagateSpanAsText(sp)
binCtx, binAttrs := tracer.PropagateSpanAsBinary(sp)
sp1, err := tracer.JoinTraceFromText(op, textCtx, textAttrs)
if err != nil {
t.Fatal(err)
}
sp2, err := tracer.JoinTraceFromBinary(op, binCtx, binAttrs)
if err != nil {
t.Fatal(err)
}
sp.Finish()
for _, sp := range []opentracing.Span{sp1, sp2} {
sp.Finish()
}
spans := recorder.GetSpans()
if a, e := len(spans), 3; a != e {
t.Fatalf("expected %d spans, got %d", e, a)
}
exp := spans[0]
exp.Duration = time.Duration(123)
exp.Start = time.Time{}.Add(1)
for i, sp := range spans[1:] {
if a, e := sp.ParentSpanID, exp.SpanID; a != e {
t.Errorf("%d: ParentSpanID %d does not match expectation %d", i, a, e)
} else {
// Prepare for comparison.
sp.SpanID, sp.ParentSpanID = exp.SpanID, 0
sp.Duration, sp.Start = exp.Duration, exp.Start
}
if a, e := sp.TraceID, exp.TraceID; a != e {
t.Errorf("%d: TraceID changed from %d to %d", i, e, a)
}
if !reflect.DeepEqual(exp, sp) {
t.Errorf("%d: wanted %+v, got %+v", i, spew.Sdump(exp), spew.Sdump(sp))
}
}
}
func TestPeerTags(t *testing.T) {
if ext.PeerService != "peer.service" {
t.Fatalf("Invalid PeerService %v", ext.PeerService)
}
recorder := testutils.NewInMemoryRecorder()
tracer := standardtracer.New(recorder)
span := tracer.StartTrace("my-trace")
ext.PeerService.Add(span, "my-service")
ext.PeerHostname.Add(span, "my-hostname")
ext.PeerHostIPv4.Add(span, uint32(127<<24|1))
ext.PeerHostIPv6.Add(span, "::")
ext.PeerPort.Add(span, uint16(8080))
span.Finish()
if len(recorder.GetSpans()) != 1 {
t.Fatal("Span not recorded")
}
rawSpan := recorder.GetSpans()[0]
assert.EqualValues(t, "my-service", rawSpan.Tags[string(ext.PeerService)])
assert.EqualValues(t, "my-hostname", rawSpan.Tags[string(ext.PeerHostname)])
assert.EqualValues(t, uint32(127<<24|1), rawSpan.Tags[string(ext.PeerHostIPv4)])
assert.EqualValues(t, "::", rawSpan.Tags[string(ext.PeerHostIPv6)])
assert.EqualValues(t, 8080, rawSpan.Tags[string(ext.PeerPort)])
}
// NewTracer returns a new dapperish Tracer instance.
func NewTracer(processName string) opentracing.Tracer {
return standardtracer.New(NewTrivialRecorder(processName))
}