| // 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 ( |
| "context" |
| ) |
| |
| type noopTracer struct{} |
| |
| var _ Tracer = noopTracer{} |
| |
| // Start starts a noop span. |
| func (noopTracer) Start(ctx context.Context, name string, opts ...SpanOption) (context.Context, Span) { |
| span := noopSpan{} |
| return ContextWithSpan(ctx, span), span |
| } |