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Fixing bug with dropping baggage when TracePropagationBehaviorExtract=IGNORE #9037

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Merged
merged 4 commits into from
Jun 27, 2025
Merged

Fixing bug with dropping baggage when TracePropagationBehaviorExtract=IGNORE #9037

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5facbfd
Fixing issues with dropping baggage when TracePropagationBehaviorExtr…
mhlidd Jun 25, 2025
917c6c0
updating calls to BaggagePropagator from unit tests
mhlidd Jun 25, 2025
0be2fc1
fixing call to base constructor
mhlidd Jun 26, 2025
a26badd
updating to handle behaviorExtract=IGNORE in CoreTracer rather than B…
mhlidd Jun 26, 2025
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updating to handle behaviorExtract=IGNORE in CoreTracer rather than B… 
…aggagePropagator
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@mhlidd
mhlidd committed Jun 26, 2025
commit a26badd44a8bcde3aa0465dfa5bc8bf2a8d12820
5 changes: 3 additions & 2 deletions dd-trace-core/src/main/java/datadog/trace/core/CoreTracer.java
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@
import static datadog.trace.api.DDTags.DJM_ENABLED;
import static datadog.trace.api.DDTags.DSM_ENABLED;
import static datadog.trace.api.DDTags.PROFILING_CONTEXT_ENGINE;
import static datadog.trace.api.TracePropagationBehaviorExtract.RESTART;
import static datadog.trace.api.TracePropagationBehaviorExtract.IGNORE;
import static datadog.trace.bootstrap.instrumentation.api.AgentPropagation.BAGGAGE_CONCERN;
import static datadog.trace.bootstrap.instrumentation.api.AgentPropagation.DSM_CONCERN;
import static datadog.trace.bootstrap.instrumentation.api.AgentPropagation.TRACING_CONCERN;
Expand Down Expand Up @@ -716,7 +716,8 @@ private CoreTracer(
if (config.isDataStreamsEnabled()) {
Propagators.register(DSM_CONCERN, this.dataStreamsMonitoring.propagator());
}
if (config.isBaggagePropagationEnabled()) {
if (config.isBaggagePropagationEnabled()
&& config.getTracePropagationBehaviorExtract() != IGNORE) {
Propagators.register(BAGGAGE_CONCERN, new BaggagePropagator(config));
}

Expand Down
20 changes: 3 additions & 17 deletions dd-trace-core/src/main/java/datadog/trace/core/baggage/BaggagePropagator.java
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Original file line number Diff line number Diff line change
@@ -1,14 +1,12 @@
package datadog.trace.core.baggage;

import static datadog.trace.api.TracePropagationBehaviorExtract.IGNORE;
import static java.util.Collections.emptyMap;

import datadog.context.Context;
import datadog.context.propagation.CarrierSetter;
import datadog.context.propagation.CarrierVisitor;
import datadog.context.propagation.Propagator;
import datadog.trace.api.Config;
import datadog.trace.api.TracePropagationBehaviorExtract;
import datadog.trace.bootstrap.instrumentation.api.Baggage;
import datadog.trace.core.util.PercentEscaper;
import datadog.trace.core.util.PercentEscaper.Escaped;
Expand All @@ -30,29 +28,21 @@ public class BaggagePropagator implements Propagator {
private final boolean extractBaggage;
private final int maxItems;
private final int maxBytes;
private final TracePropagationBehaviorExtract behaviorExtract;

public BaggagePropagator(Config config) {
this(
config.isBaggageInject(),
config.isBaggageExtract(),
config.getTraceBaggageMaxItems(),
config.getTraceBaggageMaxBytes(),
config.getTracePropagationBehaviorExtract());
config.getTraceBaggageMaxBytes());
}

// use primarily for testing purposes
BaggagePropagator(
boolean injectBaggage,
boolean extractBaggage,
int maxItems,
int maxBytes,
TracePropagationBehaviorExtract behaviorExtract) {
BaggagePropagator(boolean injectBaggage, boolean extractBaggage, int maxItems, int maxBytes) {
this.injectBaggage = injectBaggage;
this.extractBaggage = extractBaggage;
this.maxItems = maxItems;
this.maxBytes = maxBytes;
this.behaviorExtract = behaviorExtract;
}

@Override
Expand Down Expand Up @@ -114,11 +104,7 @@ public <C> void inject(Context context, C carrier, CarrierSetter<C> setter) {

@Override
public <C> Context extract(Context context, C carrier, CarrierVisitor<C> visitor) {
if (!this.extractBaggage
|| this.behaviorExtract == IGNORE
|| context == null
|| carrier == null
|| visitor == null) {
if (!this.extractBaggage || context == null || carrier == null || visitor == null) {
return context;
}
BaggageExtractor baggageExtractor = new BaggageExtractor();
Expand Down
11 changes: 5 additions & 6 deletions dd-trace-core/src/test/groovy/datadog/trace/core/baggage/BaggagePropagatorTest.groovy
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Expand Up @@ -11,7 +11,6 @@ import java.util.function.BiConsumer

import static datadog.trace.api.ConfigDefaults.DEFAULT_TRACE_BAGGAGE_MAX_BYTES
import static datadog.trace.api.ConfigDefaults.DEFAULT_TRACE_BAGGAGE_MAX_ITEMS
import static datadog.trace.api.TracePropagationBehaviorExtract.CONTINUE
import static datadog.trace.core.baggage.BaggagePropagator.BAGGAGE_KEY

class BaggagePropagatorTest extends DDSpecification {
Expand All @@ -36,7 +35,7 @@ class BaggagePropagatorTest extends DDSpecification {
}

def setup() {
this.propagator = new BaggagePropagator(true, true, DEFAULT_TRACE_BAGGAGE_MAX_ITEMS, DEFAULT_TRACE_BAGGAGE_MAX_BYTES, CONTINUE)
this.propagator = new BaggagePropagator(true, true, DEFAULT_TRACE_BAGGAGE_MAX_ITEMS, DEFAULT_TRACE_BAGGAGE_MAX_BYTES)
this.setter = new MapCarrierAccessor()
this.carrier = [:]
this.context = Context.root()
Expand Down Expand Up @@ -66,7 +65,7 @@ class BaggagePropagatorTest extends DDSpecification {

def "test baggage inject item limit"() {
setup:
propagator = new BaggagePropagator(true, true, 2, DEFAULT_TRACE_BAGGAGE_MAX_BYTES, CONTINUE) //creating a new instance after injecting config
propagator = new BaggagePropagator(true, true, 2, DEFAULT_TRACE_BAGGAGE_MAX_BYTES) //creating a new instance after injecting config
context = Baggage.create(baggage).storeInto(context)

when:
Expand All @@ -83,7 +82,7 @@ class BaggagePropagatorTest extends DDSpecification {

def "test baggage inject bytes limit"() {
setup:
propagator = new BaggagePropagator(true, true, DEFAULT_TRACE_BAGGAGE_MAX_ITEMS, 20, CONTINUE) //creating a new instance after injecting config
propagator = new BaggagePropagator(true, true, DEFAULT_TRACE_BAGGAGE_MAX_ITEMS, 20) //creating a new instance after injecting config
context = Baggage.create(baggage).storeInto(context)

when:
Expand Down Expand Up @@ -185,7 +184,7 @@ class BaggagePropagatorTest extends DDSpecification {

def "test baggage cache items limit"(){
setup:
propagator = new BaggagePropagator(true, true, 2, DEFAULT_TRACE_BAGGAGE_MAX_BYTES, CONTINUE) //creating a new instance after injecting config
propagator = new BaggagePropagator(true, true, 2, DEFAULT_TRACE_BAGGAGE_MAX_BYTES) //creating a new instance after injecting config
def headers = [
(BAGGAGE_KEY) : baggageHeader,
]
Expand All @@ -206,7 +205,7 @@ class BaggagePropagatorTest extends DDSpecification {

def "test baggage cache bytes limit"(){
setup:
propagator = new BaggagePropagator(true, true, DEFAULT_TRACE_BAGGAGE_MAX_ITEMS, 20, CONTINUE) //creating a new instance after injecting config
propagator = new BaggagePropagator(true, true, DEFAULT_TRACE_BAGGAGE_MAX_ITEMS, 20) //creating a new instance after injecting config
def headers = [
(BAGGAGE_KEY) : baggageHeader,
]
Expand Down