blob: bf0f1f6f8a14b144ea51be0ee3e6c047d0dbbeb3 [file] [log] [blame]
// Copyright The OpenTelemetry Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
package otel
import (
// Baggage returns a copy of the baggage in ctx.
func Baggage(ctx context.Context) label.Set {
// TODO (MrAlias, #1222): The underlying storage, the Map, shares many of
// the functional elements of the label.Set. These should be unified so
// this conversion is unnecessary and there is no performance hit calling
// this.
m := baggage.MapFromContext(ctx)
values := make([]label.KeyValue, 0, m.Len())
m.Foreach(func(kv label.KeyValue) bool {
values = append(values, kv)
return true
return label.NewSet(values...)
// BaggageValue returns the value related to key in the baggage of ctx. If no
// value is set, the returned label.Value will be an uninitialized zero-value
// with type INVALID.
func BaggageValue(ctx context.Context, key label.Key) label.Value {
v, _ := baggage.MapFromContext(ctx).Value(key)
return v
// ContextWithBaggageValues returns a copy of parent with pairs updated in the baggage.
func ContextWithBaggageValues(parent context.Context, pairs ...label.KeyValue) context.Context {
m := baggage.MapFromContext(parent).Apply(baggage.MapUpdate{
MultiKV: pairs,
return baggage.ContextWithMap(parent, m)
// ContextWithoutBaggageValues returns a copy of parent in which the values related
// to keys have been removed from the baggage.
func ContextWithoutBaggageValues(parent context.Context, keys ...label.Key) context.Context {
m := baggage.MapFromContext(parent).Apply(baggage.MapUpdate{
DropMultiK: keys,
return baggage.ContextWithMap(parent, m)
// ContextWithoutBaggage returns a copy of parent without baggage.
func ContextWithoutBaggage(parent context.Context) context.Context {
return baggage.ContextWithNoCorrelationData(parent)