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79 changes: 79 additions & 0 deletions
79
...src/main/java/io/opentelemetry/sdk/extension/incubator/fileconfig/PropagatorsFactory.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| /* | ||
| * Copyright The OpenTelemetry Authors | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
|
|
||
| package io.opentelemetry.sdk.extension.incubator.fileconfig; | ||
|
|
||
| import io.opentelemetry.api.baggage.propagation.W3CBaggagePropagator; | ||
| import io.opentelemetry.api.trace.propagation.W3CTraceContextPropagator; | ||
| import io.opentelemetry.context.propagation.ContextPropagators; | ||
| import io.opentelemetry.context.propagation.TextMapPropagator; | ||
| import io.opentelemetry.sdk.autoconfigure.internal.NamedSpiManager; | ||
| import io.opentelemetry.sdk.autoconfigure.internal.SpiHelper; | ||
| import io.opentelemetry.sdk.autoconfigure.spi.ConfigurablePropagatorProvider; | ||
| import io.opentelemetry.sdk.autoconfigure.spi.ConfigurationException; | ||
| import io.opentelemetry.sdk.autoconfigure.spi.internal.DefaultConfigProperties; | ||
| import java.io.Closeable; | ||
| import java.util.Arrays; | ||
| import java.util.Collections; | ||
| import java.util.LinkedHashSet; | ||
| import java.util.List; | ||
| import java.util.Set; | ||
| import javax.annotation.Nullable; | ||
|
|
||
| final class PropagatorsFactory implements Factory<List<String>, ContextPropagators> { | ||
|
|
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| private static final PropagatorsFactory INSTANCE = new PropagatorsFactory(); | ||
|
|
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| private PropagatorsFactory() {} | ||
|
|
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| static PropagatorsFactory getInstance() { | ||
| return INSTANCE; | ||
| } | ||
|
|
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| @Override | ||
| public ContextPropagators create( | ||
| @Nullable List<String> model, SpiHelper spiHelper, List<Closeable> closeables) { | ||
| if (model == null || model.isEmpty()) { | ||
| model = Arrays.asList("tracecontext", "baggage"); | ||
| } | ||
|
|
||
| if (model.contains("none")) { | ||
| if (model.size() > 1) { | ||
| throw new ConfigurationException( | ||
| "propagators contains \"none\" along with other propagators"); | ||
| } | ||
| return ContextPropagators.noop(); | ||
| } | ||
|
|
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| NamedSpiManager<TextMapPropagator> spiPropagatorsManager = | ||
| spiHelper.loadConfigurable( | ||
| ConfigurablePropagatorProvider.class, | ||
| ConfigurablePropagatorProvider::getName, | ||
| ConfigurablePropagatorProvider::getPropagator, | ||
| DefaultConfigProperties.createForTest(Collections.emptyMap())); | ||
| Set<TextMapPropagator> propagators = new LinkedHashSet<>(); | ||
| for (String propagator : model) { | ||
| propagators.add(getPropagator(propagator, spiPropagatorsManager)); | ||
| } | ||
|
|
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| return ContextPropagators.create(TextMapPropagator.composite(propagators)); | ||
| } | ||
|
|
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| private static TextMapPropagator getPropagator( | ||
| String name, NamedSpiManager<TextMapPropagator> spiPropagatorsManager) { | ||
| if (name.equals("tracecontext")) { | ||
| return W3CTraceContextPropagator.getInstance(); | ||
| } | ||
| if (name.equals("baggage")) { | ||
| return W3CBaggagePropagator.getInstance(); | ||
| } | ||
|
|
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| TextMapPropagator spiPropagator = spiPropagatorsManager.getByName(name); | ||
| if (spiPropagator != null) { | ||
| return spiPropagator; | ||
| } | ||
| throw new ConfigurationException("Unrecognized value for otel.propagators: " + name); | ||
| } | ||
| } |
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