1 files changed, 89 insertions, 0 deletions
diff --git a/vendor/go.opentelemetry.io/otel/trace/noop.go b/vendor/go.opentelemetry.io/otel/trace/noop.go
new file mode 100644
index 000000000..73950f207
--- /dev/null
+++ b/vendor/go.opentelemetry.io/otel/trace/noop.go
@@ -0,0 +1,89 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package trace // import "go.opentelemetry.io/otel/trace"
+
+import (
+	"context"
+
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+)
+
+// NewNoopTracerProvider returns an implementation of TracerProvider that
+// performs no operations. The Tracer and Spans created from the returned
+// TracerProvider also perform no operations.
+func NewNoopTracerProvider() TracerProvider {
+	return noopTracerProvider{}
+}
+
+type noopTracerProvider struct{}
+
+var _ TracerProvider = noopTracerProvider{}
+
+// Tracer returns noop implementation of Tracer.
+func (p noopTracerProvider) Tracer(string, ...TracerOption) Tracer {
+	return noopTracer{}
+}
+
+// noopTracer is an implementation of Tracer that preforms no operations.
+type noopTracer struct{}
+
+var _ Tracer = noopTracer{}
+
+// Start carries forward a non-recording Span, if one is present in the context, otherwise it
+// creates a no-op Span.
+func (t noopTracer) Start(ctx context.Context, name string, _ ...SpanStartOption) (context.Context, Span) {
+	span := SpanFromContext(ctx)
+	if _, ok := span.(nonRecordingSpan); !ok {
+		// span is likely already a noopSpan, but let's be sure
+		span = noopSpan{}
+	}
+	return ContextWithSpan(ctx, span), span
+}
+
+// noopSpan is an implementation of Span that preforms no operations.
+type noopSpan struct{}
+
+var _ Span = noopSpan{}
+
+// SpanContext returns an empty span context.
+func (noopSpan) SpanContext() SpanContext { return SpanContext{} }
+
+// IsRecording always returns false.
+func (noopSpan) IsRecording() bool { return false }
+
+// SetStatus does nothing.
+func (noopSpan) SetStatus(codes.Code, string) {}
+
+// SetError does nothing.
+func (noopSpan) SetError(bool) {}
+
+// SetAttributes does nothing.
+func (noopSpan) SetAttributes(...attribute.KeyValue) {}
+
+// End does nothing.
+func (noopSpan) End(...SpanEndOption) {}
+
+// RecordError does nothing.
+func (noopSpan) RecordError(error, ...EventOption) {}
+
+// AddEvent does nothing.
+func (noopSpan) AddEvent(string, ...EventOption) {}
+
+// SetName does nothing.
+func (noopSpan) SetName(string) {}
+
+// TracerProvider returns a no-op TracerProvider.
+func (noopSpan) TracerProvider() TracerProvider { return noopTracerProvider{} }