Wraps RequestStreamHandler and logs request payload in Alexa Java SDK

MyRequestStreamHandler.java

import com.amazon.speech.speechlet.SpeechletException;
import com.amazon.speech.speechlet.SpeechletRequestHandlerException;
import com.amazon.speech.speechlet.SpeechletV2;
import com.amazon.speech.speechlet.lambda.LambdaSpeechletRequestHandler;
import com.amazonaws.services.lambda.runtime.Context;
import com.amazonaws.services.lambda.runtime.RequestStreamHandler;
import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.*;

public class MyRequestStreamHandler implements RequestStreamHandler {
    private static final Logger log = LoggerFactory.getLogger(WiseGuySpeechlet.class);

    private static final Set<String> supportedApplicationIds;

    // 1) instantiate your speechlet handler
    private static final SpeechletV2 mySpeechlet = null;

    // 2) add your skill id(s) here
    static {
        supportedApplicationIds = new HashSet<String>();
        supportedApplicationIds.add("amzn1.xxxx.xxxx.xxxx.xxxx.xxxx");
    }

    @Override
    public void handleRequest(final InputStream input, final OutputStream output, final Context context) throws IOException {
        byte[] serializedSpeechletRequest = IOUtils.toByteArray(input);

        log.info(new String(serializedSpeechletRequest));

        final LambdaSpeechletRequestHandler handler = new LambdaSpeechletRequestHandler(supportedApplicationIds);

        try {
            byte[] outputBytes = handler.handleSpeechletCall(mySpeechlet, serializedSpeechletRequest);
            output.write(outputBytes);
        } catch (SpeechletRequestHandlerException | SpeechletException e) {
            // wrap actual exception in expected IOException
            throw new IOException(e);
        }
    }
}

Use this as your new entry point for your Java Alexa skill instead of creating a class that derives from SpeechletRequestStreamHandler as described in the tutorials. Reference your speechlet handler in line 22 and your skill id(s) in line 27.