feat(gateway): Fix inferred gateway span design

Move propagator to dd-trace-core

Author: PerfectSlayer

dd-java-agent/agent-bootstrap/src/main/java/datadog/trace/bootstrap/instrumentation/decorator/HttpServerDecorator.java

@@ -19,9 +19,9 @@
 import datadog.trace.api.gateway.CallbackProvider;
 import datadog.trace.api.gateway.Flow;
 import datadog.trace.api.gateway.IGSpanInfo;
+import datadog.trace.api.gateway.InferredProxyHeaders;
 import datadog.trace.api.gateway.RequestContext;
 import datadog.trace.api.gateway.RequestContextSlot;
-import datadog.trace.api.gateway.inferredproxy.InferredProxyHeaders;
 import datadog.trace.api.interceptor.MutableSpan;
 import datadog.trace.api.naming.SpanNaming;
 import datadog.trace.bootstrap.ActiveSubsystems;

dd-trace-core/src/main/java/datadog/trace/core/CoreTracer.java

@@ -43,7 +43,6 @@
 import datadog.trace.api.gateway.RequestContext;
 import datadog.trace.api.gateway.RequestContextSlot;
 import datadog.trace.api.gateway.SubscriptionService;
-import datadog.trace.api.gateway.inferredproxy.InferredProxyPropagator;
 import datadog.trace.api.interceptor.MutableSpan;
 import datadog.trace.api.interceptor.TraceInterceptor;
 import datadog.trace.api.internal.TraceSegment;
@@ -90,6 +89,7 @@
 import datadog.trace.core.monitor.TracerHealthMetrics;
 import datadog.trace.core.propagation.ExtractedContext;
 import datadog.trace.core.propagation.HttpCodec;
+import datadog.trace.core.propagation.InferredProxyPropagator;
 import datadog.trace.core.propagation.PropagationTags;
 import datadog.trace.core.propagation.TracingPropagator;
 import datadog.trace.core.propagation.XRayPropagator;

internal-api/src/main/java/datadog/trace/api/gateway/inferredproxy/InferredProxyPropagator.java renamed to dd-trace-core/src/main/java/datadog/trace/core/propagation/InferredProxyPropagator.java

@@ -1,9 +1,10 @@
-package datadog.trace.api.gateway.inferredproxy;
+package datadog.trace.core.propagation;
 
 import datadog.context.Context;
 import datadog.context.propagation.CarrierSetter;
 import datadog.context.propagation.CarrierVisitor;
 import datadog.context.propagation.Propagator;
+import datadog.trace.api.gateway.InferredProxyHeaders;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.function.BiConsumer;

internal-api/src/test/java/datadog/trace/api/gateway/inferredproxy/InferredProxyPropagatorTests.java renamed to dd-trace-core/src/test/java/datadog/trace/core/propagation/InferredProxyPropagatorTests.java

@@ -1,13 +1,14 @@
-package datadog.trace.api.gateway.inferredproxy;
+package datadog.trace.core.propagation;
 
 import static datadog.context.Context.root;
-import static datadog.trace.api.gateway.inferredproxy.InferredProxyHeaders.fromContext;
+import static datadog.trace.api.gateway.InferredProxyHeaders.fromContext;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.junit.jupiter.api.Assertions.assertNull;
 
 import datadog.context.Context;
 import datadog.context.propagation.CarrierVisitor;
+import datadog.trace.api.gateway.InferredProxyHeaders;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.function.BiConsumer;

internal-api/src/main/java/datadog/trace/api/gateway/inferredproxy/InferredProxyHeaders.java renamed to internal-api/src/main/java/datadog/trace/api/gateway/InferredProxyHeaders.java

@@ -1,4 +1,4 @@
-package datadog.trace.api.gateway.inferredproxy;
+package datadog.trace.api.gateway;
 
 import static datadog.context.ContextKey.named;
 

internal-api/src/test/java/datadog/trace/api/gateway/inferredproxy/InferredProxyHeadersTests.java

@@ -1,14 +1,15 @@
 package datadog.trace.api.gateway.inferredproxy;
 
 import static datadog.context.Context.root;
-import static datadog.trace.api.gateway.inferredproxy.InferredProxyHeaders.fromContext;
-import static datadog.trace.api.gateway.inferredproxy.InferredProxyHeaders.fromValues;
+import static datadog.trace.api.gateway.InferredProxyHeaders.fromContext;
+import static datadog.trace.api.gateway.InferredProxyHeaders.fromValues;
 import static java.util.Collections.emptyMap;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.junit.jupiter.api.Assertions.assertNull;
 
 import datadog.context.Context;
+import datadog.trace.api.gateway.InferredProxyHeaders;
 import java.util.HashMap;
 import java.util.Map;
 import org.junit.jupiter.api.DisplayName;