c9e9ae555f
* Add license headers & NOTICE * generated protobuf --------- Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>
50 lines
1.3 KiB
Go
50 lines
1.3 KiB
Go
// Copyright 2023 LiveKit, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package tracer
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import "context"
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type Tracer interface {
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Start(ctx context.Context, spanName string, opts ...interface{}) (context.Context, Span)
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}
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type Span interface {
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RecordError(err error)
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End()
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}
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var tracer Tracer = &NoOpTracer{}
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// Can be used for your own tracing (for example, with Lightstep)
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func SetTracer(t Tracer) {
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tracer = t
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}
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func Start(ctx context.Context, spanName string, opts ...interface{}) (context.Context, Span) {
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return tracer.Start(ctx, spanName, opts...)
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}
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type NoOpTracer struct{}
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func (t *NoOpTracer) Start(ctx context.Context, _ string, _ ...interface{}) (context.Context, Span) {
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return ctx, &NoOpSpan{}
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}
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type NoOpSpan struct{}
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func (s *NoOpSpan) RecordError(_ error) {}
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func (s *NoOpSpan) End() {}
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