baggage

Documentation

Overview

Package baggage provides base types and functionality to store and retrieve baggage in Go context. This package exists because the OpenTracing bridge to OpenTelemetry needs to synchronize state whenever baggage for a context is modified and that context contains an OpenTracing span. If it were not for this need this package would not need to exist and the `go.opentelemetry.io/otel/baggage` package would be the singular place where W3C baggage is handled.

Index

• type Item
• type List
• type Property

Types

type Item

type Item struct {
	Value      string
	Properties []Property
}

Item is the value and metadata properties part of a list-member.

type List

type List map[string]Item

List is the collection of baggage members. The W3C allows for duplicates, but OpenTelemetry does not, therefore, this is represented as a map.

type Property

type Property struct {
	Key, Value string

	// HasValue indicates if a zero-value value means the property does not
	// have a value or if it was the zero-value.
	HasValue bool
}

Property is a metadata entry for a list-member.