extensions

package

v2.2.1-0...-300efb0 Latest Latest Go to latest Published: Aug 29, 2020 License: Apache-2.0 Imports: 10 Imported by: 0

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Package extensions provides implementations of common event extensions.

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const (
	TraceParentExtension = "traceparent"
	TraceStateExtension  = "tracestate"
)

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type DistributedTracingExtension struct {
	TraceParent string `json:"traceparent"`
	TraceState  string `json:"tracestate"`
}

DistributedTracingExtension represents the extension for cloudevents context

func FromSpanContext(sc trace.SpanContext) DistributedTracingExtension

FromSpanContext populates DistributedTracingExtension from a SpanContext.

func GetDistributedTracingExtension(event event.Event) (DistributedTracingExtension, bool)

func (d DistributedTracingExtension) AddTracingAttributes(e event.EventWriter)

AddTracingAttributes adds the tracing attributes traceparent and tracestate to the cloudevents context

func (d *DistributedTracingExtension) ReadTransformer() binding.TransformerFunc

func (d DistributedTracingExtension) StartChildSpan(ctx context.Context, name string, opts ...trace.StartOption) (context.Context, *trace.Span)

func (d DistributedTracingExtension) ToSpanContext() (trace.SpanContext, error)

ToSpanContext creates a SpanContext from a DistributedTracingExtension instance.

func (d *DistributedTracingExtension) WriteTransformer() binding.TransformerFunc