Publish :instrumentation:netty:netty-common as library instrumentation (#6805)

Related to #6734.

This first stage splits out the shared utilities in
`:instrumentation:netty:netty-common`. I'll follow it up by splitting
out `:instrumentation:netty:netty-4-common`,
`:instrumentation:netty:netty-4.1` in separate PRs. If there is
appetite, I can also split out library instrumentation for
`:instrumentation:netty:netty-4.0` and
`:instrumentation:netty:netty-3.8`, though I have no need for these.

instrumentation/netty/netty-3.8/javaagent/build.gradle.kts

@@ -21,7 +21,7 @@ dependencies {
   compileOnly("com.google.auto.value:auto-value-annotations")
   annotationProcessor("com.google.auto.value:auto-value")
 
-  implementation(project(":instrumentation:netty:netty-common:javaagent"))
+  implementation(project(":instrumentation:netty:netty-common:library"))
 
   compileOnly("io.netty:netty:3.8.0.Final")
 

instrumentation/netty/netty-3.8/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v3_8/DefaultChannelPipelineInstrumentation.java

@@ -9,10 +9,10 @@ import static net.bytebuddy.matcher.ElementMatchers.isMethod;
 import static net.bytebuddy.matcher.ElementMatchers.named;
 import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
 
+import io.opentelemetry.instrumentation.netty.common.internal.NettyErrorHolder;
 import io.opentelemetry.javaagent.bootstrap.Java8BytecodeBridge;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyErrorHolder;
 import net.bytebuddy.asm.Advice;
 import net.bytebuddy.description.type.TypeDescription;
 import net.bytebuddy.matcher.ElementMatcher;

instrumentation/netty/netty-3.8/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v3_8/NettyChannelInstrumentation.java

@@ -17,11 +17,11 @@ import io.opentelemetry.api.trace.Span;
 import io.opentelemetry.context.Context;
 import io.opentelemetry.instrumentation.api.internal.InstrumenterUtil;
 import io.opentelemetry.instrumentation.api.util.VirtualField;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyConnectionRequest;
+import io.opentelemetry.instrumentation.netty.common.internal.Timer;
 import io.opentelemetry.javaagent.bootstrap.Java8BytecodeBridge;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyConnectionRequest;
-import io.opentelemetry.javaagent.instrumentation.netty.common.Timer;
 import io.opentelemetry.javaagent.instrumentation.netty.v3_8.client.ConnectionListener;
 import java.net.SocketAddress;
 import net.bytebuddy.asm.Advice;

instrumentation/netty/netty-3.8/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v3_8/client/ConnectionListener.java

@@ -9,8 +9,8 @@ import static io.opentelemetry.javaagent.instrumentation.netty.v3_8.client.Netty
 
 import io.opentelemetry.context.Context;
 import io.opentelemetry.instrumentation.api.internal.InstrumenterUtil;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyConnectionRequest;
-import io.opentelemetry.javaagent.instrumentation.netty.common.Timer;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyConnectionRequest;
+import io.opentelemetry.instrumentation.netty.common.internal.Timer;
 import org.jboss.netty.channel.ChannelFuture;
 import org.jboss.netty.channel.ChannelFutureListener;
 

instrumentation/netty/netty-3.8/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v3_8/client/HttpClientResponseTracingHandler.java

@@ -9,7 +9,7 @@ import static io.opentelemetry.javaagent.instrumentation.netty.v3_8.client.Netty
 
 import io.opentelemetry.context.Scope;
 import io.opentelemetry.instrumentation.api.util.VirtualField;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyErrorHolder;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyErrorHolder;
 import org.jboss.netty.channel.Channel;
 import org.jboss.netty.channel.ChannelHandlerContext;
 import org.jboss.netty.channel.MessageEvent;

instrumentation/netty/netty-3.8/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v3_8/client/NettyClientSingletons.java

@@ -14,10 +14,10 @@ import io.opentelemetry.instrumentation.api.instrumenter.http.HttpSpanNameExtrac
 import io.opentelemetry.instrumentation.api.instrumenter.http.HttpSpanStatusExtractor;
 import io.opentelemetry.instrumentation.api.instrumenter.net.NetClientAttributesExtractor;
 import io.opentelemetry.instrumentation.api.instrumenter.net.PeerServiceAttributesExtractor;
+import io.opentelemetry.instrumentation.netty.common.internal.HttpClientSpanKeyAttributesExtractor;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyConnectionRequest;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyErrorHolder;
 import io.opentelemetry.javaagent.bootstrap.internal.CommonConfig;
-import io.opentelemetry.javaagent.instrumentation.netty.common.HttpClientSpanKeyAttributesExtractor;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyConnectionRequest;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyErrorHolder;
 import io.opentelemetry.javaagent.instrumentation.netty.v3_8.HttpRequestAndChannel;
 import org.jboss.netty.channel.Channel;
 import org.jboss.netty.handler.codec.http.HttpResponse;

instrumentation/netty/netty-3.8/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v3_8/client/NettyConnectNetAttributesGetter.java

@@ -9,7 +9,7 @@ import static io.opentelemetry.semconv.trace.attributes.SemanticAttributes.NetTr
 import static io.opentelemetry.semconv.trace.attributes.SemanticAttributes.NetTransportValues.IP_UDP;
 
 import io.opentelemetry.instrumentation.api.instrumenter.net.InetSocketAddressNetClientAttributesGetter;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyConnectionRequest;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyConnectionRequest;
 import java.net.InetSocketAddress;
 import java.net.SocketAddress;
 import javax.annotation.Nullable;

instrumentation/netty/netty-3.8/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v3_8/server/HttpServerResponseTracingHandler.java

@@ -10,7 +10,7 @@ import static io.opentelemetry.javaagent.instrumentation.netty.v3_8.server.Netty
 import io.opentelemetry.context.Context;
 import io.opentelemetry.context.Scope;
 import io.opentelemetry.instrumentation.api.util.VirtualField;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyErrorHolder;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyErrorHolder;
 import io.opentelemetry.javaagent.instrumentation.netty.v3_8.HttpRequestAndChannel;
 import org.jboss.netty.channel.Channel;
 import org.jboss.netty.channel.ChannelHandlerContext;

instrumentation/netty/netty-3.8/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v3_8/server/NettyServerSingletons.java

@@ -13,8 +13,8 @@ import io.opentelemetry.instrumentation.api.instrumenter.http.HttpServerMetrics;
 import io.opentelemetry.instrumentation.api.instrumenter.http.HttpSpanNameExtractor;
 import io.opentelemetry.instrumentation.api.instrumenter.http.HttpSpanStatusExtractor;
 import io.opentelemetry.instrumentation.api.instrumenter.net.NetServerAttributesExtractor;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyErrorHolder;
 import io.opentelemetry.javaagent.bootstrap.internal.CommonConfig;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyErrorHolder;
 import io.opentelemetry.javaagent.instrumentation.netty.v3_8.HttpRequestAndChannel;
 import org.jboss.netty.handler.codec.http.HttpResponse;
 

instrumentation/netty/netty-4-common/javaagent/build.gradle.kts

@@ -6,7 +6,7 @@ dependencies {
   compileOnly("com.google.auto.value:auto-value-annotations")
   annotationProcessor("com.google.auto.value:auto-value")
 
-  api(project(":instrumentation:netty:netty-common:javaagent"))
+  api(project(":instrumentation:netty:netty-common:library"))
 
   compileOnly("io.netty:netty-codec-http:4.0.0.Final")
 }

instrumentation/netty/netty-4-common/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v4/common/client/ConnectionCompleteListener.java

@@ -10,7 +10,7 @@ import io.netty.channel.ChannelFuture;
 import io.netty.util.concurrent.Future;
 import io.netty.util.concurrent.GenericFutureListener;
 import io.opentelemetry.context.Context;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyConnectionRequest;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyConnectionRequest;
 
 public class ConnectionCompleteListener implements GenericFutureListener<Future<Void>> {
   private final NettyConnectionInstrumenter instrumenter;

instrumentation/netty/netty-4-common/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v4/common/client/NettyClientInstrumenterFactory.java

@@ -17,9 +17,9 @@ import io.opentelemetry.instrumentation.api.instrumenter.http.HttpSpanNameExtrac
 import io.opentelemetry.instrumentation.api.instrumenter.http.HttpSpanStatusExtractor;
 import io.opentelemetry.instrumentation.api.instrumenter.net.NetClientAttributesExtractor;
 import io.opentelemetry.instrumentation.api.instrumenter.net.PeerServiceAttributesExtractor;
+import io.opentelemetry.instrumentation.netty.common.internal.HttpClientSpanKeyAttributesExtractor;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyConnectionRequest;
 import io.opentelemetry.javaagent.bootstrap.internal.CommonConfig;
-import io.opentelemetry.javaagent.instrumentation.netty.common.HttpClientSpanKeyAttributesExtractor;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyConnectionRequest;
 import io.opentelemetry.javaagent.instrumentation.netty.v4.common.HttpRequestAndChannel;
 
 public final class NettyClientInstrumenterFactory {

instrumentation/netty/netty-4-common/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v4/common/client/NettyConnectNetAttributesGetter.java

@@ -11,7 +11,7 @@ import static io.opentelemetry.semconv.trace.attributes.SemanticAttributes.NetTr
 import io.netty.channel.Channel;
 import io.netty.channel.socket.DatagramChannel;
 import io.opentelemetry.instrumentation.api.instrumenter.net.InetSocketAddressNetClientAttributesGetter;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyConnectionRequest;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyConnectionRequest;
 import java.net.InetSocketAddress;
 import java.net.SocketAddress;
 import javax.annotation.Nullable;

instrumentation/netty/netty-4-common/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v4/common/client/NettyConnectionInstrumenter.java

@@ -7,7 +7,7 @@ package io.opentelemetry.javaagent.instrumentation.netty.v4.common.client;
 
 import io.netty.channel.Channel;
 import io.opentelemetry.context.Context;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyConnectionRequest;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyConnectionRequest;
 import javax.annotation.Nullable;
 
 public interface NettyConnectionInstrumenter {

instrumentation/netty/netty-4-common/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v4/common/client/NettyConnectionInstrumenterImpl.java

@@ -8,7 +8,7 @@ package io.opentelemetry.javaagent.instrumentation.netty.v4.common.client;
 import io.netty.channel.Channel;
 import io.opentelemetry.context.Context;
 import io.opentelemetry.instrumentation.api.instrumenter.Instrumenter;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyConnectionRequest;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyConnectionRequest;
 import javax.annotation.Nullable;
 
 final class NettyConnectionInstrumenterImpl implements NettyConnectionInstrumenter {

instrumentation/netty/netty-4-common/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v4/common/client/NettyErrorOnlyConnectionInstrumenter.java

@@ -9,8 +9,8 @@ import io.netty.channel.Channel;
 import io.opentelemetry.context.Context;
 import io.opentelemetry.instrumentation.api.instrumenter.Instrumenter;
 import io.opentelemetry.instrumentation.api.internal.InstrumenterUtil;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyConnectionRequest;
-import io.opentelemetry.javaagent.instrumentation.netty.common.Timer;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyConnectionRequest;
+import io.opentelemetry.instrumentation.netty.common.internal.Timer;
 import javax.annotation.Nullable;
 
 final class NettyErrorOnlyConnectionInstrumenter implements NettyConnectionInstrumenter {

instrumentation/netty/netty-4-common/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v4/common/client/NettySslErrorOnlyInstrumenter.java

@@ -8,7 +8,7 @@ package io.opentelemetry.javaagent.instrumentation.netty.v4.common.client;
 import io.opentelemetry.context.Context;
 import io.opentelemetry.instrumentation.api.instrumenter.Instrumenter;
 import io.opentelemetry.instrumentation.api.internal.InstrumenterUtil;
-import io.opentelemetry.javaagent.instrumentation.netty.common.Timer;
+import io.opentelemetry.instrumentation.netty.common.internal.Timer;
 import javax.annotation.Nullable;
 
 final class NettySslErrorOnlyInstrumenter implements NettySslInstrumenter {

instrumentation/netty/netty-4-common/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v4/common/server/NettyServerInstrumenterFactory.java

@@ -14,8 +14,8 @@ import io.opentelemetry.instrumentation.api.instrumenter.http.HttpServerMetrics;
 import io.opentelemetry.instrumentation.api.instrumenter.http.HttpSpanNameExtractor;
 import io.opentelemetry.instrumentation.api.instrumenter.http.HttpSpanStatusExtractor;
 import io.opentelemetry.instrumentation.api.instrumenter.net.NetServerAttributesExtractor;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyErrorHolder;
 import io.opentelemetry.javaagent.bootstrap.internal.CommonConfig;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyErrorHolder;
 import io.opentelemetry.javaagent.instrumentation.netty.v4.common.HttpRequestAndChannel;
 
 public final class NettyServerInstrumenterFactory {

instrumentation/netty/netty-4.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v4_0/AbstractChannelHandlerContextInstrumentation.java

@@ -14,9 +14,9 @@ import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.util.Attribute;
 import io.opentelemetry.context.Context;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyErrorHolder;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyErrorHolder;
 import io.opentelemetry.javaagent.instrumentation.netty.v4.common.HttpRequestAndChannel;
 import net.bytebuddy.asm.Advice;
 import net.bytebuddy.description.type.TypeDescription;

instrumentation/netty/netty-4.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v4_0/BootstrapInstrumentation.java

@@ -12,10 +12,10 @@ import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
 import io.netty.channel.ChannelPromise;
 import io.opentelemetry.context.Context;
 import io.opentelemetry.context.Scope;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyConnectionRequest;
 import io.opentelemetry.javaagent.bootstrap.Java8BytecodeBridge;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyConnectionRequest;
 import io.opentelemetry.javaagent.instrumentation.netty.v4.common.client.ConnectionCompleteListener;
 import java.net.SocketAddress;
 import net.bytebuddy.asm.Advice;

instrumentation/netty/netty-4.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v4_0/server/HttpServerResponseTracingHandler.java

@@ -14,7 +14,7 @@ import io.netty.channel.ChannelPromise;
 import io.netty.handler.codec.http.HttpResponse;
 import io.opentelemetry.context.Context;
 import io.opentelemetry.context.Scope;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyErrorHolder;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyErrorHolder;
 import io.opentelemetry.javaagent.instrumentation.netty.v4.common.HttpRequestAndChannel;
 import io.opentelemetry.javaagent.instrumentation.netty.v4_0.AttributeKeys;
 import javax.annotation.Nullable;

instrumentation/netty/netty-4.1/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v4_1/AbstractChannelHandlerContextInstrumentation.java

@@ -13,9 +13,9 @@ import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.util.Attribute;
 import io.opentelemetry.context.Context;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyErrorHolder;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyErrorHolder;
 import io.opentelemetry.javaagent.instrumentation.netty.v4.common.HttpRequestAndChannel;
 import io.opentelemetry.javaagent.instrumentation.netty.v4_1.client.NettyClientSingletons;
 import net.bytebuddy.asm.Advice;

instrumentation/netty/netty-4.1/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v4_1/BootstrapInstrumentation.java

@@ -17,10 +17,10 @@ import io.netty.resolver.AddressResolverGroup;
 import io.netty.resolver.DefaultAddressResolverGroup;
 import io.opentelemetry.context.Context;
 import io.opentelemetry.context.Scope;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyConnectionRequest;
 import io.opentelemetry.javaagent.bootstrap.Java8BytecodeBridge;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyConnectionRequest;
 import io.opentelemetry.javaagent.instrumentation.netty.v4.common.client.ConnectionCompleteListener;
 import java.net.SocketAddress;
 import net.bytebuddy.asm.Advice;

instrumentation/netty/netty-4.1/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v4_1/InstrumentedAddressResolverGroup.java

@@ -11,7 +11,7 @@ import io.netty.util.concurrent.EventExecutor;
 import io.netty.util.concurrent.Future;
 import io.netty.util.concurrent.Promise;
 import io.opentelemetry.context.Context;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyConnectionRequest;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyConnectionRequest;
 import io.opentelemetry.javaagent.instrumentation.netty.v4.common.client.NettyConnectionInstrumenter;
 import java.net.SocketAddress;
 import java.util.List;

instrumentation/netty/netty-4.1/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/netty/v4_1/server/HttpServerResponseTracingHandler.java

@@ -18,7 +18,7 @@ import io.netty.handler.codec.http.LastHttpContent;
 import io.netty.util.Attribute;
 import io.opentelemetry.context.Context;
 import io.opentelemetry.context.Scope;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyErrorHolder;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyErrorHolder;
 import io.opentelemetry.javaagent.instrumentation.netty.v4.common.HttpRequestAndChannel;
 import io.opentelemetry.javaagent.instrumentation.netty.v4_1.AttributeKeys;
 import javax.annotation.Nullable;

instrumentation/netty/netty-common/library/build.gradle.kts

@@ -1,5 +1,5 @@
 plugins {
-  id("otel.javaagent-instrumentation")
+  id("otel.library-instrumentation")
 }
 
 dependencies {

instrumentation/netty/netty-common/library/src/main/java/io/opentelemetry/instrumentation/netty/common/internal/HttpClientSpanKeyAttributesExtractor.java

@@ -3,7 +3,7 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-package io.opentelemetry.javaagent.instrumentation.netty.common;
+package io.opentelemetry.instrumentation.netty.common.internal;
 
 import io.opentelemetry.api.common.AttributesBuilder;
 import io.opentelemetry.context.Context;
@@ -16,6 +16,9 @@ import javax.annotation.Nullable;
 /**
  * Attributes extractor that pretends it's a {@link HttpClientAttributesExtractor} so that error
  * only CONNECT spans can be suppressed by higher level HTTP clients based on netty.
+ *
+ * <p>This class is internal and is hence not for public use. Its APIs are unstable and can change
+ * at any time.
  */
 public enum HttpClientSpanKeyAttributesExtractor
     implements AttributesExtractor<NettyConnectionRequest, Object>, SpanKeyProvider {

instrumentation/netty/netty-common/library/src/main/java/io/opentelemetry/instrumentation/netty/common/internal/NettyConnectionRequest.java

@@ -3,12 +3,16 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-package io.opentelemetry.javaagent.instrumentation.netty.common;
+package io.opentelemetry.instrumentation.netty.common.internal;
 
 import com.google.auto.value.AutoValue;
 import java.net.SocketAddress;
 import javax.annotation.Nullable;
 
+/**
+ * This class is internal and is hence not for public use. Its APIs are unstable and can change at
+ * any time.
+ */
 @AutoValue
 public abstract class NettyConnectionRequest {
 

instrumentation/netty/netty-common/library/src/main/java/io/opentelemetry/instrumentation/netty/common/internal/NettyErrorHolder.java

@@ -3,7 +3,7 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-package io.opentelemetry.javaagent.instrumentation.netty.common;
+package io.opentelemetry.instrumentation.netty.common.internal;
 
 import static io.opentelemetry.context.ContextKey.named;
 
@@ -12,6 +12,10 @@ import io.opentelemetry.context.ContextKey;
 import io.opentelemetry.context.ImplicitContextKeyed;
 import javax.annotation.Nullable;
 
+/**
+ * This class is internal and is hence not for public use. Its APIs are unstable and can change at
+ * any time.
+ */
 public final class NettyErrorHolder implements ImplicitContextKeyed {
 
   private static final ContextKey<NettyErrorHolder> KEY = named("opentelemetry-netty-error");

instrumentation/netty/netty-common/library/src/main/java/io/opentelemetry/instrumentation/netty/common/internal/Timer.java

@@ -3,13 +3,17 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-package io.opentelemetry.javaagent.instrumentation.netty.common;
+package io.opentelemetry.instrumentation.netty.common.internal;
 
 import io.opentelemetry.context.Context;
 import io.opentelemetry.context.ContextKey;
 import io.opentelemetry.context.ImplicitContextKeyed;
 import java.time.Instant;
 
+/**
+ * This class is internal and is hence not for public use. Its APIs are unstable and can change at
+ * any time.
+ */
 public final class Timer implements ImplicitContextKeyed {
 
   private static final ContextKey<Timer> KEY = ContextKey.named("opentelemetry-timer-key");

instrumentation/reactor/reactor-netty/reactor-netty-1.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/reactornetty/v1_0/ConnectionRequestAndContext.java

@@ -7,7 +7,7 @@ package io.opentelemetry.javaagent.instrumentation.reactornetty.v1_0;
 
 import com.google.auto.value.AutoValue;
 import io.opentelemetry.context.Context;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyConnectionRequest;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyConnectionRequest;
 
 @AutoValue
 public abstract class ConnectionRequestAndContext {

instrumentation/reactor/reactor-netty/reactor-netty-1.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/reactornetty/v1_0/TransportConnectorInstrumentation.java

@@ -16,10 +16,10 @@ import io.netty.resolver.AddressResolverGroup;
 import io.opentelemetry.context.Context;
 import io.opentelemetry.context.Scope;
 import io.opentelemetry.instrumentation.api.util.VirtualField;
+import io.opentelemetry.instrumentation.netty.common.internal.NettyConnectionRequest;
 import io.opentelemetry.javaagent.bootstrap.Java8BytecodeBridge;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
-import io.opentelemetry.javaagent.instrumentation.netty.common.NettyConnectionRequest;
 import io.opentelemetry.javaagent.instrumentation.netty.v4_1.InstrumentedAddressResolverGroup;
 import java.net.SocketAddress;
 import java.util.List;

settings.gradle.kts

@@ -352,7 +352,7 @@ include(":instrumentation:netty:netty-3.8:javaagent")
 include(":instrumentation:netty:netty-4.0:javaagent")
 include(":instrumentation:netty:netty-4.1:javaagent")
 include(":instrumentation:netty:netty-4-common:javaagent")
-include(":instrumentation:netty:netty-common:javaagent")
+include(":instrumentation:netty:netty-common:library")
 include(":instrumentation:okhttp:okhttp-2.2:javaagent")
 include(":instrumentation:okhttp:okhttp-3.0:javaagent")
 include(":instrumentation:okhttp:okhttp-3.0:library")