fix: add runtime hints for trace

spring-cloud-gcp-autoconfigure/src/main/java/com/google/cloud/spring/autoconfigure/trace/aot/TraceRuntimeHints.java

@@ -0,0 +1,49 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.cloud.spring.autoconfigure.trace.aot;
+
+import io.micrometer.observation.aop.ObservedAspect;
+import java.lang.reflect.Method;
+import java.util.Arrays;
+import org.aspectj.lang.ProceedingJoinPoint;
+import org.springframework.aot.hint.ExecutableMode;
+import org.springframework.aot.hint.MemberCategory;
+import org.springframework.aot.hint.RuntimeHints;
+import org.springframework.aot.hint.RuntimeHintsRegistrar;
+import org.springframework.aot.hint.TypeReference;
+import org.springframework.util.ReflectionUtils;
+
+public class TraceRuntimeHints implements RuntimeHintsRegistrar {
+
+  @Override
+  public void registerHints(RuntimeHints hints, ClassLoader classLoader) {
+    Method method =
+        ReflectionUtils.findMethod(
+            ObservedAspect.class, "observeMethod", ProceedingJoinPoint.class);
+    hints
+        .reflection()
+        .registerMethod(method, ExecutableMode.INVOKE)
+        .registerTypes(
+            Arrays.asList(
+                TypeReference.of(com.google.protobuf.Value.class),
+                TypeReference.of(com.google.protobuf.Value.Builder.class)),
+            hint ->
+                hint.withMembers(
+                    MemberCategory.INVOKE_DECLARED_CONSTRUCTORS,
+                    MemberCategory.INVOKE_PUBLIC_METHODS));
+  }
+}

spring-cloud-gcp-autoconfigure/src/main/resources/META-INF/spring/aot.factories

@@ -0,0 +1,2 @@
+org.springframework.aot.hint.RuntimeHintsRegistrar=\
+com.google.cloud.spring.autoconfigure.trace.aot.TraceRuntimeHints

spring-cloud-gcp-autoconfigure/src/test/java/com/google/cloud/spring/autoconfigure/trace/aot/TraceRuntimeHintsTest.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.cloud.spring.autoconfigure.trace.aot;
+
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
+import static org.springframework.aot.hint.predicate.RuntimeHintsPredicates.reflection;
+
+import io.micrometer.observation.aop.ObservedAspect;
+import org.junit.jupiter.api.Test;
+import org.springframework.aot.hint.RuntimeHints;
+
+class TraceRuntimeHintsTest {
+  @Test
+  void registerObserveMethod() {
+    RuntimeHints hints = new RuntimeHints();
+    TraceRuntimeHints registrar = new TraceRuntimeHints();
+    registrar.registerHints(hints, null);
+    assertThat(hints).matches(reflection().onMethod(ObservedAspect.class, "observeMethod"));
+  }
+}

spring-cloud-gcp-samples/pom.xml

@@ -90,6 +90,7 @@
 			<id>native-sample-config</id>
 			<modules>
 				<module>spring-cloud-gcp-logging-sample</module>
+				<module>spring-cloud-gcp-trace-sample</module>
 				<module>spring-cloud-gcp-vision-api-sample</module>
 			</modules>
 			<build>
@@ -133,6 +134,7 @@
 							</includes>
 							<systemPropertyVariables>
 								<it.logging>true</it.logging>
+								<it.trace>true</it.trace>
 								<it.vision>true</it.vision>
 							</systemPropertyVariables>
 						</configuration>

spring-cloud-gcp-samples/spring-cloud-gcp-trace-sample/src/main/java/com/example/Application.java

@@ -34,6 +34,7 @@
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.boot.web.client.RestTemplateBuilder;
 import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ImportRuntimeHints;
 import org.springframework.integration.annotation.ServiceActivator;
 import org.springframework.integration.channel.DirectChannel;
 import org.springframework.lang.NonNull;
@@ -48,6 +49,7 @@
 /** Sample spring boot application. */
 @AutoConfiguration
 @SpringBootApplication
+@ImportRuntimeHints(SampleRuntimeHints.class)
 public class Application implements WebMvcConfigurer {
   private static final Logger LOGGER = LoggerFactory.getLogger(Application.class);
 

spring-cloud-gcp-samples/spring-cloud-gcp-trace-sample/src/main/java/com/example/SampleRuntimeHints.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example;
+
+import java.util.Arrays;
+import org.springframework.aot.hint.MemberCategory;
+import org.springframework.aot.hint.RuntimeHints;
+import org.springframework.aot.hint.RuntimeHintsRegistrar;
+import org.springframework.aot.hint.TypeReference;
+
+public class SampleRuntimeHints implements RuntimeHintsRegistrar {
+
+  @Override
+  public void registerHints(RuntimeHints hints, ClassLoader classLoader) {
+    hints.reflection().registerTypes(
+        Arrays.asList(TypeReference.of(Application.class)),
+        hint -> hint.withMembers(
+            MemberCategory.INVOKE_PUBLIC_METHODS));
+  }
+}

spring-cloud-gcp-samples/spring-cloud-gcp-trace-sample/src/test/java/com/example/TestRuntimeHints.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example;
+
+import ch.qos.logback.classic.encoder.PatternLayoutEncoder;
+import ch.qos.logback.core.ConsoleAppender;
+import java.util.Arrays;
+import org.springframework.aot.hint.MemberCategory;
+import org.springframework.aot.hint.RuntimeHints;
+import org.springframework.aot.hint.RuntimeHintsRegistrar;
+import org.springframework.aot.hint.TypeReference;
+
+public class TestRuntimeHints implements RuntimeHintsRegistrar {
+
+  @Override
+  public void registerHints(RuntimeHints hints, ClassLoader classLoader) {
+    hints
+        .reflection()
+        .registerTypes(
+            Arrays.asList(
+                TypeReference.of(ConsoleAppender.class),
+                TypeReference.of(PatternLayoutEncoder.class)),
+            hint ->
+                hint.withMembers(
+                    MemberCategory.INVOKE_DECLARED_CONSTRUCTORS,
+                    MemberCategory.INVOKE_PUBLIC_METHODS));
+    hints.resources().registerPattern("logback-test.xml");
+    hints.resources().registerPattern("com/google/cloud/spring/logging/logback-appender.xml");
+  }
+}

spring-cloud-gcp-samples/spring-cloud-gcp-trace-sample/src/test/java/com/example/TraceSampleApplicationIntegrationTests.java

@@ -60,6 +60,7 @@
 import org.springframework.boot.test.web.client.TestRestTemplate;
 import org.springframework.boot.test.web.server.LocalServerPort;
 import org.springframework.boot.web.client.RestTemplateBuilder;
+import org.springframework.context.annotation.ImportRuntimeHints;
 import org.springframework.http.HttpEntity;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpMethod;
@@ -75,6 +76,7 @@
     webEnvironment = WebEnvironment.RANDOM_PORT,
     classes = {Application.class})
 @AutoConfigureObservability
+@ImportRuntimeHints(TestRuntimeHints.class)
 class TraceSampleApplicationIntegrationTests {
 
   @DynamicPropertySource