mirror of
https://github.com/open-telemetry/opentelemetry-go.git
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4bf6150fa9
* Rename baggage context file * Initial baggage implementation * Initial tests * More tests * Update baggage context functionality * Add New method to baggage pkg * Update namedtracer example * URL encode baggage values * Refactor and use internal baggage pkg * Update OpenTracing bridge * Update baggage propagator * Fix lint and test errors * Add changes to changelog * Apply suggestions from code review * Rename testcase field per suggestion * Update test to verify last-one-wins semantics * Explicitly seed random numbers with static seed in tests * Parse Member key/value with string split * Add test for member parse with equal signs in value * Trim whitespaces for member key/value
44 lines
1.6 KiB
Go
44 lines
1.6 KiB
Go
// Copyright The OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/*
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Package baggage provides base types and functionality to store and retrieve
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baggage in Go context. This package exists because the OpenTracing bridge to
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OpenTelemetry needs to synchronize state whenever baggage for a context is
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modified and that context contains an OpenTracing span. If it were not for
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this need this package would not need to exist and the
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`go.opentelemetry.io/otel/baggage` package would be the singular place where
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W3C baggage is handled.
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*/
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package baggage
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// List is the collection of baggage members. The W3C allows for duplicates,
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// but OpenTelemetry does not, therefore, this is represented as a map.
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type List map[string]Item
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// Item is the value and metadata properties part of a list-member.
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type Item struct {
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Value string
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Properties []Property
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}
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// Property is a metadata entry for a list-member.
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type Property struct {
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Key, Value string
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// HasValue indicates if a zero-value value means the property does not
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// have a value or if it was the zero-value.
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HasValue bool
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}
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