chore: update v2 (#1409)

Author: jeromevdl

examples/powertools-examples-core-utilities/README.md

@@ -15,6 +15,10 @@ We also provide an example showing the integration of SAM, Powertools, and Gradl
 
 * [AWS SAM with a Gradle build](gradle/)
 
+We also provide an example showing the integration of SAM, Powertools, and Gradle:
+
+* [AWS SAM with a Gradle build](../powertools-examples-core-utilities/gradle/)
+
 For each of the tools, the example application is the same, and consists of the following files:
 
 - [App.java](sam/src/main/java/helloworld/App.java) - Code for the application's Lambda function.

examples/powertools-examples-core-utilities/gradle/src/main/java/helloworld/AppStream.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2023 Amazon.com, Inc. or its affiliates.
+ * 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
+ *     http://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 helloworld;
+
+import com.amazonaws.services.lambda.runtime.Context;
+import com.amazonaws.services.lambda.runtime.RequestStreamHandler;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.Map;
+import software.amazon.lambda.powertools.logging.Logging;
+import software.amazon.lambda.powertools.metrics.Metrics;
+
+public class AppStream implements RequestStreamHandler {
+    private static final ObjectMapper mapper = new ObjectMapper();
+
+    @Override
+    @Logging(logEvent = true)
+    @Metrics(namespace = "ServerlessAirline", service = "payment", captureColdStart = true)
+    public void handleRequest(InputStream input, OutputStream output, Context context) throws IOException {
+        Map map = mapper.readValue(input, Map.class);
+
+        System.out.println(map.size());
+    }
+}