Kafka binder AOT/Native sample app

samples/kafka-binder-native-app/src/main/java/sample/aot/nativeApp/KafkaBinderNativeApp.java

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+/*
+ * Copyright 2023 the original author or authors.
+ *
+ * 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 sample.aot.nativeApp;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.function.Consumer;
+import java.util.function.Function;
+import java.util.function.Supplier;
+
+@SpringBootApplication
+public class KafkaBinderNativeApp {
+
+	public static void main(String[] args) {
+		SpringApplication.run(KafkaBinderNativeApp.class, args);
+	}
+
+	@Bean
+	public Function<String, String> graalUppercaseFunction() {
+		return String::toUpperCase;
+	}
+
+	@Bean
+	public Consumer<String> graalLoggingConsumer() {
+		return s -> {
+			System.out.println("++++++Received:" + s);
+		};
+	}
+
+	@Bean
+	public Supplier<String> graalSupplier() {
+		final String[] splitWoodchuck = "How much wood could a woodchuck chuck if a woodchuck could chuck wood?"
+			.split(" ");
+		final AtomicInteger wordsIndex = new AtomicInteger(0);
+		return () -> {
+			int wordIndex = wordsIndex.getAndAccumulate(splitWoodchuck.length,
+				(curIndex, numWords) -> curIndex < numWords - 1 ? curIndex + 1 : 0);
+			return splitWoodchuck[wordIndex];
+		};
+	}
+
+}