Consume/Read data from Kinesis Stream

ReadFromKinesis.java

package org.example;

import com.amazonaws.services.kinesis.AmazonKinesis;
import com.amazonaws.services.kinesis.AmazonKinesisClientBuilder;
import com.amazonaws.services.kinesis.model.*;

import java.nio.charset.StandardCharsets;
import java.util.List;

/**
 * Hello world!
 */
public class App {

    private static final String streamName = "API_NAME" + "_kineis-notification-stream";
    private static final AmazonKinesis client = AmazonKinesisClientBuilder.defaultClient();

    public static void main(String[] args) {
        printKinesisRecords(getRecordsFromKinesis(client));
    }


    private static List<Record> getRecordsFromKinesis(AmazonKinesis kClient) {
        final ListShardsRequest listShardsRequest = new ListShardsRequest().withStreamName(streamName).withMaxResults(1);

        Shard shard = kClient.listShards(listShardsRequest).getShards().get(0);
        GetShardIteratorRequest getShardIteratorRequest = new GetShardIteratorRequest();
        getShardIteratorRequest.setStreamName(streamName);
        getShardIteratorRequest.setShardId(shard.getShardId());
        getShardIteratorRequest.setShardIteratorType("TRIM_HORIZON");

        final GetShardIteratorResult getShardIteratorResult = kClient.getShardIterator(getShardIteratorRequest);
        String shardIterator = getShardIteratorResult.getShardIterator();

        // Create a new getRecordsRequest with an existing shardIterator
        // Set the maximum records to return to 1
        GetRecordsRequest getRecordsRequest = new GetRecordsRequest();
        getRecordsRequest.setShardIterator(shardIterator);
        getRecordsRequest.setLimit(10);

        final GetRecordsResult result = kClient.getRecords(getRecordsRequest);
        // Put the result into record list. The result can be empty.
        return result.getRecords();
    }

    private static void printKinesisRecords(List<Record> records) {
        for (Record record : records) {
            System.err.println("RECORD: " + StandardCharsets.UTF_8.decode(record.getData()).toString());
        }
    }
}