1// Copyright The OpenTelemetry Authors
 2// SPDX-License-Identifier: Apache-2.0
 3
 4/*
 5Package baggage provides base types and functionality to store and retrieve
 6baggage in Go context. This package exists because the OpenTracing bridge to
 7OpenTelemetry needs to synchronize state whenever baggage for a context is
 8modified and that context contains an OpenTracing span. If it were not for
 9this need this package would not need to exist and the
10`go.opentelemetry.io/otel/baggage` package would be the singular place where
11W3C baggage is handled.
12*/
13package baggage // import "go.opentelemetry.io/otel/internal/baggage"
14
15// List is the collection of baggage members. The W3C allows for duplicates,
16// but OpenTelemetry does not, therefore, this is represented as a map.
17type List map[string]Item
18
19// Item is the value and metadata properties part of a list-member.
20type Item struct {
21	Value      string
22	Properties []Property
23}
24
25// Property is a metadata entry for a list-member.
26type Property struct {
27	Key, Value string
28
29	// HasValue indicates if a zero-value value means the property does not
30	// have a value or if it was the zero-value.
31	HasValue bool
32}