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https://github.com/open-telemetry/opentelemetry-go.git
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e11b90cab2
* Implement W3C Correlation Context propagator * PR comments * PR comments * Update test to inject context properly * Fix merge
42 lines
1.3 KiB
Go
42 lines
1.3 KiB
Go
// Copyright 2019, 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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package propagation
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import (
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"context"
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"go.opentelemetry.io/api/core"
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dctx "go.opentelemetry.io/api/distributedcontext"
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)
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// NoopTextFormatPropagator implements TextFormatPropagator that does nothing.
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type NoopTextFormatPropagator struct{}
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var _ TextFormatPropagator = NoopTextFormatPropagator{}
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// Inject does nothing.
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func (np NoopTextFormatPropagator) Inject(ctx context.Context, supplier Supplier) {
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}
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// Extract does nothing and returns an empty SpanContext
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func (np NoopTextFormatPropagator) Extract(ctx context.Context, supplier Supplier) (core.SpanContext, dctx.Map) {
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return core.EmptySpanContext(), dctx.NewEmptyMap()
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}
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// GetAllKeys returns empty list of strings.
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func (np NoopTextFormatPropagator) GetAllKeys() []string {
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return []string{}
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}
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