make liberty indy-ready

instrumentation/liberty/liberty-20.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/liberty/LibertyInstrumentationModule.java

@@ -10,6 +10,7 @@
 import com.google.auto.service.AutoService;
 import io.opentelemetry.javaagent.extension.instrumentation.InstrumentationModule;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
+import io.opentelemetry.javaagent.extension.instrumentation.internal.ExperimentalInstrumentationModule;
 import java.util.List;
 
 /**
@@ -26,7 +27,8 @@
  * </ul>
  */
 @AutoService(InstrumentationModule.class)
-public class LibertyInstrumentationModule extends InstrumentationModule {
+public class LibertyInstrumentationModule extends InstrumentationModule
+    implements ExperimentalInstrumentationModule {
 
   public LibertyInstrumentationModule() {
     super("liberty", "liberty-20.0");
@@ -36,4 +38,9 @@ public LibertyInstrumentationModule() {
   public List<TypeInstrumentation> typeInstrumentations() {
     return singletonList(new LibertyWebAppInstrumentation());
   }
+
+  @Override
+  public boolean isIndyReady() {
+    return true;
+  }
 }

instrumentation/liberty/liberty-20.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/liberty/LibertyWebAppInstrumentation.java

@@ -17,6 +17,7 @@
 import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
 import io.opentelemetry.javaagent.instrumentation.servlet.ServletRequestContext;
 import io.opentelemetry.javaagent.instrumentation.servlet.v3_0.Servlet3Accessor;
+import javax.annotation.Nullable;
 import javax.servlet.ServletRequest;
 import javax.servlet.ServletResponse;
 import javax.servlet.http.HttpServletRequest;
@@ -51,33 +52,33 @@ public void transform(TypeTransformer transformer) {
   public static class HandleRequestAdvice {
 
     @Advice.OnMethodEnter(suppress = Throwable.class)
-    public static void onEnter(
+    public static boolean onEnter(
         @Advice.Argument(value = 0) ServletRequest request,
-        @Advice.Argument(value = 1) ServletResponse response,
-        @Advice.Local("otelHandled") boolean handled) {
+        @Advice.Argument(value = 1) ServletResponse response) {
 
       // liberty has two handleRequest methods, skip processing when thread local context is already
       // set up
-      handled = ThreadLocalContext.get() == null;
+      boolean handled = ThreadLocalContext.get() == null;
       if (!handled
           || !(request instanceof HttpServletRequest)
           || !(response instanceof HttpServletResponse)) {
-        return;
+        return false;
       }
 
       HttpServletRequest httpServletRequest = (HttpServletRequest) request;
       // it is a bit too early to start span at this point because calling
       // some methods on HttpServletRequest will give a NPE
       // just remember the request and use it a bit later to start the span
       ThreadLocalContext.startRequest(httpServletRequest, (HttpServletResponse) response);
+      return true;
     }
 
     @Advice.OnMethodExit(onThrowable = Throwable.class, suppress = Throwable.class)
     public static void stopSpan(
         @Advice.Argument(0) ServletRequest servletRequest,
         @Advice.Argument(1) ServletResponse servletResponse,
-        @Advice.Thrown Throwable throwable,
-        @Advice.Local("otelHandled") boolean handled) {
+        @Advice.Thrown @Nullable Throwable throwable,
+        @Advice.Enter boolean handled) {
       if (!handled) {
         return;
       }

instrumentation/liberty/liberty-dispatcher-20.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/liberty/dispatcher/LibertyDispatcherInstrumentationModule.java

@@ -10,10 +10,12 @@
 import com.google.auto.service.AutoService;
 import io.opentelemetry.javaagent.extension.instrumentation.InstrumentationModule;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
+import io.opentelemetry.javaagent.extension.instrumentation.internal.ExperimentalInstrumentationModule;
 import java.util.List;
 
 @AutoService(InstrumentationModule.class)
-public class LibertyDispatcherInstrumentationModule extends InstrumentationModule {
+public class LibertyDispatcherInstrumentationModule extends InstrumentationModule
+    implements ExperimentalInstrumentationModule {
 
   public LibertyDispatcherInstrumentationModule() {
     super("liberty-dispatcher", "liberty-dispatcher-20.0", "liberty");
@@ -23,4 +25,9 @@ public LibertyDispatcherInstrumentationModule() {
   public List<TypeInstrumentation> typeInstrumentations() {
     return singletonList(new LibertyDispatcherLinkInstrumentation());
   }
+
+  @Override
+  public boolean isIndyReady() {
+    return true;
+  }
 }

instrumentation/liberty/liberty-dispatcher-20.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/liberty/dispatcher/LibertyDispatcherLinkInstrumentation.java

@@ -14,9 +14,9 @@
 import com.ibm.wsspi.http.channel.values.StatusCodes;
 import io.opentelemetry.context.Context;
 import io.opentelemetry.context.Scope;
-import io.opentelemetry.javaagent.bootstrap.Java8BytecodeBridge;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
+import javax.annotation.Nullable;
 import net.bytebuddy.asm.Advice;
 import net.bytebuddy.description.type.TypeDescription;
 import net.bytebuddy.matcher.ElementMatcher;
@@ -50,45 +50,63 @@ public void transform(TypeTransformer transformer) {
   @SuppressWarnings("unused")
   public static class SendResponseAdvice {
 
-    @Advice.OnMethodEnter(suppress = Throwable.class)
-    public static void onEnter(
-        @Advice.FieldValue("isc") HttpInboundServiceContextImpl isc,
-        @Advice.Local("otelRequest") LibertyRequest request,
-        @Advice.Local("otelContext") Context context,
-        @Advice.Local("otelScope") Scope scope) {
-      Context parentContext = Java8BytecodeBridge.currentContext();
-      request =
-          new LibertyRequest(
-              isc.getRequest(),
-              isc.getLocalAddr(),
-              isc.getLocalPort(),
-              isc.getRemoteAddr(),
-              isc.getRemotePort());
-      if (!instrumenter().shouldStart(parentContext, request)) {
-        return;
+    public static class AdviceScope {
+      private final LibertyRequest request;
+      private final Context context;
+      private final Scope scope;
+
+      private AdviceScope(LibertyRequest request, Context context, Scope scope) {
+        this.request = request;
+        this.context = context;
+        this.scope = scope;
+      }
+
+      @Nullable
+      public static AdviceScope start(HttpInboundServiceContextImpl isc) {
+        Context parentContext = Context.current();
+        LibertyRequest request =
+            new LibertyRequest(
+                isc.getRequest(),
+                isc.getLocalAddr(),
+                isc.getLocalPort(),
+                isc.getRemoteAddr(),
+                isc.getRemotePort());
+        if (!instrumenter().shouldStart(parentContext, request)) {
+          return null;
+        }
+        Context context = instrumenter().start(parentContext, request);
+        return new AdviceScope(request, context, context.makeCurrent());
+      }
+
+      public void end(
+          HttpDispatcherLink httpDispatcherLink,
+          @Nullable Throwable throwable,
+          StatusCodes statusCode,
+          @Nullable Exception failure) {
+        scope.close();
+
+        LibertyResponse response = new LibertyResponse(httpDispatcherLink, statusCode);
+        Throwable t = failure != null ? failure : throwable;
+        instrumenter().end(context, request, response, t);
       }
-      context = instrumenter().start(parentContext, request);
-      scope = context.makeCurrent();
+    }
+
+    @Advice.OnMethodEnter(suppress = Throwable.class)
+    public static AdviceScope onEnter(@Advice.FieldValue("isc") HttpInboundServiceContextImpl isc) {
+      return AdviceScope.start(isc);
     }
 
     @Advice.OnMethodExit(onThrowable = Throwable.class, suppress = Throwable.class)
     public static void stopSpan(
         @Advice.This HttpDispatcherLink httpDispatcherLink,
-        @Advice.Thrown Throwable throwable,
+        @Advice.Thrown @Nullable Throwable throwable,
         @Advice.Argument(value = 0) StatusCodes statusCode,
         @Advice.Argument(value = 2) Exception failure,
-        @Advice.Local("otelRequest") LibertyRequest request,
-        @Advice.Local("otelContext") Context context,
-        @Advice.Local("otelScope") Scope scope) {
-      if (scope == null) {
-        return;
-      }
-      scope.close();
-
-      LibertyResponse response = new LibertyResponse(httpDispatcherLink, statusCode);
+        @Advice.Enter @Nullable AdviceScope adviceScope) {
 
-      Throwable t = failure != null ? failure : throwable;
-      instrumenter().end(context, request, response, t);
+      if (adviceScope != null) {
+        adviceScope.end(httpDispatcherLink, throwable, statusCode, failure);
+      }
     }
   }
 }