Apache Flink Kinesis Connector

import org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumer;
import org.apache.flink.streaming.connectors.kinesis.FlinkKinesisProducer;
import org.apache.flink.streaming.connectors.kinesis.FlinkDynamoDBStreamsConsumer;

import org.apache.flink.streaming.connectors.kinesis.config.ConsumerConfigConstants;
import org.apache.flink.streaming.connectors.kinesis.config.AWSConfigConstants;
import org.apache.flink.streaming.connectors.kinesis.serialization.KinesisDeserializationSchema;
import org.apache.flink.streaming.connectors.kinesis.serialization.KinesisSerializationSchema;

import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumer;
import org.apache.flink.streaming.connectors.kinesis.FlinkKinesisProducer;
import org.apache.flink.api.common.serialization.SimpleStringSchema;
import java.util.Properties;

// Create execution environment
StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();

// Configure AWS properties
Properties consumerProps = new Properties();
consumerProps.setProperty(AWSConfigConstants.AWS_REGION, "us-east-1");
consumerProps.setProperty(AWSConfigConstants.AWS_ACCESS_KEY_ID, "your-access-key");
consumerProps.setProperty(AWSConfigConstants.AWS_SECRET_ACCESS_KEY, "your-secret-key");
consumerProps.setProperty(ConsumerConfigConstants.STREAM_INITIAL_POSITION, "LATEST");

// Create Kinesis consumer
FlinkKinesisConsumer<String> consumer = new FlinkKinesisConsumer<>(
    "my-stream",
    new SimpleStringSchema(),
    consumerProps
);

// Create data stream from Kinesis
DataStream<String> stream = env.addSource(consumer);

// Configure producer properties
Properties producerProps = new Properties();
producerProps.setProperty(AWSConfigConstants.AWS_REGION, "us-east-1");
producerProps.setProperty(AWSConfigConstants.AWS_ACCESS_KEY_ID, "your-access-key");
producerProps.setProperty(AWSConfigConstants.AWS_SECRET_ACCESS_KEY, "your-secret-key");

// Create Kinesis producer
FlinkKinesisProducer<String> producer = new FlinkKinesisProducer<>(
    new SimpleStringSchema(),
    producerProps
);
producer.setDefaultStream("output-stream");

// Send data to Kinesis
stream.addSink(producer);

// Execute the job
env.execute("Kinesis Streaming Job");

public class FlinkKinesisConsumer<T> extends RichParallelSourceFunction<T> 
    implements ResultTypeQueryable<T>, CheckpointedFunction {
    
    public FlinkKinesisConsumer(String stream, DeserializationSchema<T> deserializer, Properties configProps);
    public FlinkKinesisConsumer(String stream, KinesisDeserializationSchema<T> deserializer, Properties configProps);
    public FlinkKinesisConsumer(List<String> streams, KinesisDeserializationSchema<T> deserializer, Properties configProps);
    
    public void setShardAssigner(KinesisShardAssigner shardAssigner);
    public void setPeriodicWatermarkAssigner(AssignerWithPeriodicWatermarks<T> periodicWatermarkAssigner);
    public void setWatermarkTracker(WatermarkTracker watermarkTracker);
}

public class FlinkKinesisProducer<OUT> extends RichSinkFunction<OUT> 
    implements CheckpointedFunction {
    
    public FlinkKinesisProducer(SerializationSchema<OUT> schema, Properties configProps);
    public FlinkKinesisProducer(KinesisSerializationSchema<OUT> schema, Properties configProps);
    
    public void setFailOnError(boolean failOnError);
    public void setQueueLimit(int queueLimit);
    public void setDefaultStream(String defaultStream);
    public void setCustomPartitioner(KinesisPartitioner<OUT> partitioner);
}

public class FlinkDynamoDBStreamsConsumer<T> extends FlinkKinesisConsumer<T> {
    public FlinkDynamoDBStreamsConsumer(String stream, DeserializationSchema<T> deserializer, Properties config);
    public FlinkDynamoDBStreamsConsumer(List<String> streams, KinesisDeserializationSchema deserializer, Properties config);
}

public class AWSConfigConstants {
    public static final String AWS_REGION = "aws.region";
    public static final String AWS_CREDENTIALS_PROVIDER = "aws.credentials.provider";
    public static final String AWS_ACCESS_KEY_ID;
    public static final String AWS_SECRET_ACCESS_KEY;
    
    public enum CredentialProvider { ENV_VAR, SYS_PROP, PROFILE, BASIC, ASSUME_ROLE, WEB_IDENTITY_TOKEN, AUTO }
}

public class ConsumerConfigConstants extends AWSConfigConstants {
    public static final String STREAM_INITIAL_POSITION = "flink.stream.initpos";
    public static final String SHARD_GETRECORDS_MAX = "flink.shard.getrecords.maxrecordcount";
    public static final String WATERMARK_SYNC_MILLIS = "flink.watermark.sync.interval";
    
    public enum InitialPosition { TRIM_HORIZON, LATEST, AT_TIMESTAMP }
    public enum RecordPublisherType { EFO, POLLING }
}

public interface KinesisDeserializationSchema<T> extends Serializable, ResultTypeQueryable<T> {
    default void open(DeserializationSchema.InitializationContext context) throws Exception;
    T deserialize(byte[] recordValue, String partitionKey, String seqNum, 
                  long approxArrivalTimestamp, String stream, String shardId) throws IOException;
}

public interface KinesisSerializationSchema<T> extends Serializable {
    default void open(InitializationContext context) throws Exception;
    ByteBuffer serialize(T element);
    String getTargetStream(T element);
}

public abstract class KinesisPartitioner<T> implements Serializable {
    public abstract String getPartitionId(T element);
    public String getExplicitHashKey(T element);
    public void initialize(int indexOfThisSubtask, int numberOfParallelSubtasks);
}

public interface KinesisShardAssigner extends Serializable {
    int assign(StreamShardHandle shard, int numParallelSubtasks);
}

public class KinesisDynamicTableFactory implements DynamicTableSourceFactory, DynamicTableSinkFactory {
    public static final String IDENTIFIER = "kinesis";
    
    public DynamicTableSource createDynamicTableSource(Context context);
    public DynamicTableSink createDynamicTableSink(Context context);
    public Set<ConfigOption<?>> requiredOptions();
    public Set<ConfigOption<?>> optionalOptions();
}

public class SequenceNumber implements Comparable<SequenceNumber>, Serializable {
    public String get();
    public int compareTo(SequenceNumber other);
    public boolean equals(Object obj);
    public String toString();
}

public enum SentinelSequenceNumber {
    SENTINEL_EARLIEST_SEQUENCE_NUM,
    SENTINEL_LATEST_SEQUENCE_NUM,
    SENTINEL_SHARD_ENDING_SEQUENCE_NUM
}

public class StartingPosition implements Serializable {
    public static StartingPosition fromStart();
    public static StartingPosition fromEnd();
    public static StartingPosition fromTimestamp(Date timestamp);
    public static StartingPosition continueFromSequenceNumber(SequenceNumber sequenceNumber);
}

public abstract class StreamShardHandle implements Serializable {
    public abstract String getStreamName();
    public abstract Shard getShard();
    public abstract boolean equals(Object obj);
    public abstract int hashCode();
}

public class KinesisStreamShardState implements Serializable {
    public StreamShardMetadata getStreamShardMetadata();
    public SequenceNumber getLastProcessedSequenceNum();
    public boolean equals(Object obj);
    public String toString();
}

public abstract class FlinkKinesisException extends RuntimeException {
    public FlinkKinesisException(String message);
    public FlinkKinesisException(String message, Throwable cause);
    
    public static class FlinkKinesisTimeoutException extends FlinkKinesisException {
        // Semantic exception for timeout errors
    }
}

public abstract class WatermarkTracker implements Closeable, Serializable {
    public static final long DEFAULT_UPDATE_TIMEOUT_MILLIS = 60_000;
    
    public abstract long getUpdateTimeoutCount();
    public void setUpdateTimeoutMillis(long updateTimeoutMillis);
    public abstract long updateWatermark(long localWatermark);
    public void open(RuntimeContext context);
    public void close();
}