DynamoDBScan.java

import java.util.Iterator;
import java.util.Map;

import com.amazonaws.services.dynamodbv2.AmazonDynamoDB;
import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClientBuilder;
import com.amazonaws.services.dynamodbv2.document.DynamoDB;
import com.amazonaws.services.dynamodbv2.document.Item;
import com.amazonaws.services.dynamodbv2.document.ItemCollection;
import com.amazonaws.services.dynamodbv2.document.ScanOutcome;
import com.amazonaws.services.dynamodbv2.document.Table;
import com.amazonaws.services.lambda.runtime.Context;
import com.amazonaws.services.lambda.runtime.RequestHandler;

/**
 * Return all items in a DynamoDB Table
 * <p>
 * This code expects that you have AWS credentials set up per:
 * http://docs.aws.amazon.com/java-sdk/latest/developer-guide/setup-credentials.html
 */
public class DynamoDBScan implements RequestHandler<Map<String, String>, String> {

	static String tableName = "<FMI1>";
	private static final AmazonDynamoDB ADB_CLIENT = AmazonDynamoDBClientBuilder.standard().withRegion("eu-west-2").build();
	private static final DynamoDB DYNAMO_DB = new DynamoDB(ADB_CLIENT);

	@Override
	public String handleRequest(Map<String, String> event, Context context) {
		return findAllItems();
	}

	private static String findAllItems() {
		Table table = DYNAMO_DB.getTable(tableName);

		ItemCollection<ScanOutcome> items = table.scan();

		Iterator<Item> iterator = items.iterator();
		String itemsToReturn = "";
		while (iterator.hasNext()) {
			itemsToReturn += iterator.next().toJSONPretty();
		}

		return itemsToReturn;
	}

}