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47 lines
902 B
47 lines
902 B
package trace
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var (
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_ Tracer = nooptracer{}
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)
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type nooptracer struct{}
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func (n nooptracer) New(title string, opts ...Option) Trace {
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return noopspan{}
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}
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func (n nooptracer) Inject(t Trace, format interface{}, carrier interface{}) error {
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return nil
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}
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func (n nooptracer) Extract(format interface{}, carrier interface{}) (Trace, error) {
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return noopspan{}, nil
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}
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type noopspan struct{}
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func (n noopspan) TraceID() string { return "" }
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func (n noopspan) Fork(string, string) Trace {
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return noopspan{}
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}
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func (n noopspan) Follow(string, string) Trace {
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return noopspan{}
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}
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func (n noopspan) Finish(err *error) {}
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func (n noopspan) SetTag(tags ...Tag) Trace {
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return noopspan{}
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}
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func (n noopspan) SetLog(logs ...LogField) Trace {
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return noopspan{}
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}
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func (n noopspan) Visit(func(k, v string)) {}
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func (n noopspan) SetTitle(string) {}
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func (n noopspan) String() string { return "" }
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