Semconv OTLP stable HTTP metrics

pkg/middlewares/observability/mock_tracing_test.go

@@ -0,0 +1,66 @@
+package observability
+
+import (
+	"context"
+
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/trace"
+	"go.opentelemetry.io/otel/trace/embedded"
+)
+
+type mockTracerProvider struct {
+	embedded.TracerProvider
+}
+
+var _ trace.TracerProvider = mockTracerProvider{}
+
+func (p mockTracerProvider) Tracer(string, ...trace.TracerOption) trace.Tracer {
+	return &mockTracer{}
+}
+
+type mockTracer struct {
+	embedded.Tracer
+
+	spans []*mockSpan
+}
+
+var _ trace.Tracer = &mockTracer{}
+
+func (t *mockTracer) Start(ctx context.Context, name string, opts ...trace.SpanStartOption) (context.Context, trace.Span) {
+	config := trace.NewSpanStartConfig(opts...)
+	span := &mockSpan{}
+	span.SetName(name)
+	span.SetAttributes(attribute.String("span.kind", config.SpanKind().String()))
+	span.SetAttributes(config.Attributes()...)
+	t.spans = append(t.spans, span)
+	return trace.ContextWithSpan(ctx, span), span
+}
+
+// mockSpan is an implementation of Span that preforms no operations.
+type mockSpan struct {
+	embedded.Span
+
+	name       string
+	attributes []attribute.KeyValue
+}
+
+var _ trace.Span = &mockSpan{}
+
+func (*mockSpan) SpanContext() trace.SpanContext {
+	return trace.NewSpanContext(trace.SpanContextConfig{TraceID: trace.TraceID{1}, SpanID: trace.SpanID{1}})
+}
+func (*mockSpan) IsRecording() bool                  { return false }
+func (s *mockSpan) SetStatus(_ codes.Code, _ string) {}
+func (s *mockSpan) SetAttributes(kv ...attribute.KeyValue) {
+	s.attributes = append(s.attributes, kv...)
+}
+func (s *mockSpan) End(...trace.SpanEndOption)                  {}
+func (s *mockSpan) RecordError(_ error, _ ...trace.EventOption) {}
+func (s *mockSpan) AddEvent(_ string, _ ...trace.EventOption)   {}
+
+func (s *mockSpan) SetName(name string) { s.name = name }
+
+func (s *mockSpan) TracerProvider() trace.TracerProvider {
+	return nil
+}