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https://github.com/open-telemetry/opentelemetry-go.git
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6b4acf47b8
* Rename distributedcontext package to correlation Correlation is the name we agreed upon. * Move trace propagators to api/trace The trace propagators tests had to be moved to a testtrace subpackage to avoid import cycles between api/trace and internal/trace. Needed to shut up golint about stutter in trace.TraceContext - TraceContext is a name of a W3C spec, so this stutter is expected. It's certainly still better than golint's suggestion of having trace.Context. * Rename api/propagators to api/propagation This package will not contain any propagators in the long run, just the interface definitions. Co-authored-by: Joshua MacDonald <jmacd@users.noreply.github.com>
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/otel/api/core"
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"go.opentelemetry.io/otel/api/correlation"
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)
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// NoopTextFormat implements TextFormat that does nothing.
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type NoopTextFormat struct{}
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var _ TextFormat = NoopTextFormat{}
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// Inject does nothing.
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func (np NoopTextFormat) 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 NoopTextFormat) Extract(ctx context.Context, supplier Supplier) (core.SpanContext, correlation.Map) {
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return core.EmptySpanContext(), correlation.NewEmptyMap()
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}
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// GetAllKeys returns empty list of strings.
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func (np NoopTextFormat) GetAllKeys() []string {
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return []string{}
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}
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