go-observer – github.com/opentracing-contrib/go-observer Index | Files

package otobserver

import "github.com/opentracing-contrib/go-observer"

Index

Types

type Observer 

type Observer interface {
	// Create and return a span observer. Called when a span starts.
	// If the Observer is not interested in the given span, it must return (nil, false).
	// E.g :
	//     func StartSpan(opName string, opts ...opentracing.StartSpanOption) {
	//         var sp opentracing.Span
	//         sso := opentracing.StartSpanOptions{}
	//         spanObserver, ok := observer.OnStartSpan(span, opName, sso);
	//         if ok {
	//             // we have a valid SpanObserver
	//         }
	//         ...
	//     }
	OnStartSpan(sp opentracing.Span, operationName string, options opentracing.StartSpanOptions) (SpanObserver, bool)
}

Observer can be registered with a Tracer to recieve notifications about new Spans. Tracers are not required to support the Observer API. The actual registration depends on the implementation, which might look like the below e.g : observer := myobserver.NewObserver() tracer := client.NewTracer(..., client.WithObserver(observer))

type SpanObserver 

type SpanObserver interface {
	// Callback called from opentracing.Span.SetOperationName()
	OnSetOperationName(operationName string)
	// Callback called from opentracing.Span.SetTag()
	OnSetTag(key string, value interface{})
	// Callback called from opentracing.Span.Finish()
	OnFinish(options opentracing.FinishOptions)
}

SpanObserver is created by the Observer and receives notifications about other Span events.

Source Files

observer.go

Version
v0.0.0-20250314031746-df52693353bc (latest)
Published
Mar 14, 2025
Platform
linux/amd64
Imports
1 packages
Last checked
1 month ago –

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