make azure-core indy-ready (#14681)

instrumentation/azure-core/azure-core-1.14/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/azurecore/v1_14/AzureHttpClientInstrumentation.java

@@ -15,6 +15,7 @@ import com.azure.core.http.HttpResponse;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
 import net.bytebuddy.asm.Advice;
+import net.bytebuddy.asm.Advice.AssignReturned;
 import net.bytebuddy.description.type.TypeDescription;
 import net.bytebuddy.matcher.ElementMatcher;
 import reactor.core.publisher.Mono;
@@ -39,9 +40,10 @@ public class AzureHttpClientInstrumentation implements TypeInstrumentation {
   @SuppressWarnings("unused")
   public static class SuppressNestedClientAdvice {
 
+    @AssignReturned.ToReturned
     @Advice.OnMethodExit(suppress = Throwable.class)
-    public static void methodExit(@Advice.Return(readOnly = false) Mono<HttpResponse> mono) {
+    public static Mono<HttpResponse> methodExit(@Advice.Return Mono<HttpResponse> mono) {
-      mono = new SuppressNestedClientMono<>(mono);
+      return new SuppressNestedClientMono<>(mono);
     }
   }
 }

instrumentation/azure-core/azure-core-1.14/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/azurecore/v1_14/AzureSdkInstrumentationModule.java

@@ -77,4 +77,9 @@ public class AzureSdkInstrumentationModule extends InstrumentationModule
       // Nothing to instrument, no methods to match
     }
   }
+
+  @Override
+  public boolean isIndyReady() {
+    return true;
+  }
 }

instrumentation/azure-core/azure-core-1.19/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/azurecore/v1_19/AzureHttpClientInstrumentation.java

@@ -15,6 +15,7 @@ import com.azure.core.http.HttpResponse;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
 import net.bytebuddy.asm.Advice;
+import net.bytebuddy.asm.Advice.AssignReturned;
 import net.bytebuddy.description.type.TypeDescription;
 import net.bytebuddy.matcher.ElementMatcher;
 import reactor.core.publisher.Mono;
@@ -39,9 +40,10 @@ public class AzureHttpClientInstrumentation implements TypeInstrumentation {
   @SuppressWarnings("unused")
   public static class SuppressNestedClientAdvice {
 
+    @AssignReturned.ToReturned
     @Advice.OnMethodExit(suppress = Throwable.class)
-    public static void methodExit(@Advice.Return(readOnly = false) Mono<HttpResponse> mono) {
+    public static Mono<HttpResponse> methodExit(@Advice.Return Mono<HttpResponse> mono) {
-      mono = new SuppressNestedClientMono<>(mono);
+      return new SuppressNestedClientMono<>(mono);
     }
   }
 }

instrumentation/azure-core/azure-core-1.19/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/azurecore/v1_19/AzureSdkInstrumentationModule.java

@@ -77,4 +77,9 @@ public class AzureSdkInstrumentationModule extends InstrumentationModule
       // Nothing to instrument, no methods to match
     }
   }
+
+  @Override
+  public boolean isIndyReady() {
+    return true;
+  }
 }

instrumentation/azure-core/azure-core-1.36/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/azurecore/v1_36/AzureHttpClientInstrumentation.java

@@ -18,7 +18,9 @@ import com.azure.core.http.HttpResponse;
 import io.opentelemetry.context.Scope;
 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.asm.Advice.AssignReturned;
 import net.bytebuddy.description.type.TypeDescription;
 import net.bytebuddy.matcher.ElementMatcher;
 import reactor.core.publisher.Mono;
@@ -50,27 +52,26 @@ public class AzureHttpClientInstrumentation implements TypeInstrumentation {
 
   @SuppressWarnings("unused")
   public static class SuppressNestedClientMonoAdvice {
+    @AssignReturned.ToReturned
     @Advice.OnMethodExit(suppress = Throwable.class)
-    public static void asyncSendExit(
+    public static Mono<HttpResponse> asyncSendExit(
         @Advice.Argument(1) com.azure.core.util.Context azContext,
-        @Advice.Return(readOnly = false) Mono<HttpResponse> mono) {
+        @Advice.Return Mono<HttpResponse> mono) {
-      mono = disallowNestedClientSpanMono(mono, azContext);
+      return disallowNestedClientSpanMono(mono, azContext);
     }
   }
 
   @SuppressWarnings("unused")
   public static class SuppressNestedClientSyncAdvice {
 
+    @Nullable
     @Advice.OnMethodEnter(suppress = Throwable.class)
-    public static void syncSendEnter(
+    public static Scope syncSendEnter(@Advice.Argument(1) com.azure.core.util.Context azContext) {
-        @Advice.Argument(1) com.azure.core.util.Context azContext,
+      return disallowNestedClientSpanSync(azContext);
-        @Advice.Local("otelScope") Scope scope) {
-      scope = disallowNestedClientSpanSync(azContext);
     }
 
     @Advice.OnMethodExit(suppress = Throwable.class)
-    public static void syncSendExit(
+    public static void syncSendExit(@Advice.Enter @Nullable Scope scope) {
-        @Advice.Return HttpResponse response, @Advice.Local("otelScope") Scope scope) {
       if (scope != null) {
         scope.close();
       }

instrumentation/azure-core/azure-core-1.36/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/azurecore/v1_36/AzureSdkInstrumentationModule.java

@@ -77,4 +77,9 @@ public class AzureSdkInstrumentationModule extends InstrumentationModule
       // Nothing to instrument, no methods to match
     }
   }
+
+  @Override
+  public boolean isIndyReady() {
+    return true;
+  }
 }

instrumentation/azure-core/azure-core-1.36/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/azurecore/v1_36/SuppressNestedClientHelper.java

@@ -11,11 +11,13 @@ import io.opentelemetry.api.trace.Span;
 import io.opentelemetry.context.Context;
 import io.opentelemetry.context.Scope;
 import io.opentelemetry.instrumentation.api.internal.SpanKey;
+import javax.annotation.Nullable;
 import reactor.core.CoreSubscriber;
 import reactor.core.publisher.Mono;
 
 public class SuppressNestedClientHelper {
 
+  @Nullable
   public static Scope disallowNestedClientSpanSync(com.azure.core.util.Context azContext) {
     Context parentContext = currentContext();
     boolean hasAzureClientSpan = azContext.getData("client-method-call-flag").isPresent();