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opentelemetry-go/trace/nonrecording.go
Tyler Yahn 604b05cbcf
Store current Span instead of local and remote SpanContext in context.Context (#1731)
* Store Span instead of local/remote SpanContext in Context

Now that the SpanContext has a remote identifier, storing a Span's
SpanContext two separate ways in a Context (one for local another for
remote) is unnecessary and adds complication throughout the project when
determining heredity of a Span. This moves to storing the Span directly
in the Context uniformly (for both local and remote) as current Span. In
the process, it updates the getter/setter functionality the `trace`
package provides and replaces the distributed heredity logic throughout
the project with just using the current Span as the parent if it exists.

* Update trace/context.go

Co-authored-by: Anthony Mirabella <a9@aneurysm9.com>

* Assert propagators context remote state

Co-authored-by: Anthony Mirabella <a9@aneurysm9.com>
2021-03-29 08:55:44 -07:00

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995 B
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 trace // import "go.opentelemetry.io/otel/trace"
// nonRecordingSpan is a minimal implementation of a Span that wraps a
// SpanContext. It performs no operations other than to return the wrapped
// SpanContext.
type nonRecordingSpan struct {
noopSpan
sc SpanContext
}
// SpanContext returns the wrapped SpanContext.
func (s nonRecordingSpan) SpanContext() SpanContext { return s.sc }