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mirror of https://github.com/open-telemetry/opentelemetry-go.git synced 2025-01-26 03:52:03 +02:00
opentelemetry-go/propagators/propagators.go
Tyler Yahn f1dad21e47
Move propagators out of API and into their own package (#1118)
* Add new propagators package

* Move B3 propagator to propagators

Update all `api/trace` dependencies in the propagator.

Export the isDeferred and isDebug methods of the SpanContext. These are
needed by the B3 propagator to track trace state.

* Move W3C trace context propagator to propagators

* Update package docs with supported encodings

* Move unified propagators code to own file

* Update b3 exported documentation

* Update trace_context exported documentation

* Add code examples for B3 propagator

* Add TraceContext example code

* Remove internal package

Move common testing declarations to the propagators_test.go file.

* Add changes to Changelog

* Add test to check default propagators
2020-09-08 19:07:59 -04:00

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Go

// 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
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package propagators
import "go.opentelemetry.io/otel/api/propagation"
// DefaultHTTPPropagator returns the default OpenTelemetry HTTP propagator,
// the W3C Trace Context propagator.
func DefaultHTTPPropagator() propagation.HTTPPropagator {
// As specified here:
// https://github.com/open-telemetry/opentelemetry-specification/blob/master/specification/context/api-propagators.md#global-propagators
return TraceContext{}
}