Connectors

File System

File Source

FileEnumeratorProvider(...)	Factory for FileEnumerator which task is to discover all files to be read and to split them into a set of file source splits.
FileSplitAssignerProvider(j_file_split_assigner)	Factory for FileSplitAssigner which is responsible for deciding what split should be processed next by which node.
StreamFormat(j_stream_format)	A reader format that reads individual records from a stream.
BulkFormat(j_bulk_format)	The BulkFormat reads and decodes batches of records at a time.
FileSourceBuilder(j_file_source_builder)	The builder for the FileSource, to configure the various behaviors.
FileSource(j_file_source)	A unified data source that reads files - both in batch and in streaming mode.

File Sink

BucketAssigner(j_bucket_assigner)	A BucketAssigner is used with a file sink to determine the bucket each incoming element should be put into.
RollingPolicy(j_rolling_policy)	The policy based on which a Bucket in the FileSink rolls its currently open part file and opens a new one.
DefaultRollingPolicy(j_rolling_policy)	The default implementation of the RollingPolicy.
OnCheckpointRollingPolicy(j_rolling_policy)	A RollingPolicy which rolls (ONLY) on every checkpoint.
OutputFileConfig(part_prefix, part_suffix)	Part file name configuration.
FileCompactStrategy(j_file_compact_strategy)	Strategy for compacting the files written in {@link FileSink} before committing.
FileCompactor(j_file_compactor)	The FileCompactor is responsible for compacting files into one file.
FileSink(j_file_sink[, transformer])	A unified sink that emits its input elements to FileSystem files within buckets.
StreamingFileSink(j_obj)	Sink that emits its input elements to FileSystem files within buckets.

Number Sequence

NumberSequenceSource(start, end)

A data source that produces a sequence of numbers (longs).

Kafka

Kakfa Producer and Consumer

FlinkKafkaConsumer(topics, ...)	The Flink Kafka Consumer is a streaming data source that pulls a parallel data stream from Apache Kafka.
FlinkKafkaProducer(topic, ...[, ...])	Flink Sink to produce data into a Kafka topic.
Semantic(value)	Semantics that can be chosen.

Kafka Source and Sink

KafkaSource(j_kafka_source)	The Source implementation of Kafka.
KafkaSourceBuilder()	The builder class for KafkaSource to make it easier for the users to construct a KafkaSource.
KafkaTopicPartition(topic, partition)	Corresponding to Java org.apache.kafka.common.TopicPartition class.
KafkaOffsetResetStrategy(value)	Corresponding to Java org.apache.kafka.client.consumer.OffsetResetStrategy class.
KafkaOffsetsInitializer(j_initializer)	An interface for users to specify the starting / stopping offset of a KafkaPartitionSplit.
KafkaSink(j_kafka_sink[, transformer])	Flink Sink to produce data into a Kafka topic.
KafkaSinkBuilder()	Builder to construct KafkaSink.
KafkaRecordSerializationSchema(...[, ...])	A serialization schema which defines how to convert the stream record to kafka producer record.
KafkaRecordSerializationSchemaBuilder()	Builder to construct KafkaRecordSerializationSchema.
KafkaTopicSelector()	Select topic for an incoming record

kinesis

Kinesis Source

KinesisShardAssigner(j_kinesis_shard_assigner)	Utility to map Kinesis shards to Flink subtask indices.
KinesisDeserializationSchema(...)	This is a deserialization schema specific for the Flink Kinesis Consumer.
WatermarkTracker(j_watermark_tracker)	The watermark tracker is responsible for aggregating watermarks across distributed operators.
FlinkKinesisConsumer(streams, deserializer, ...)	The Flink Kinesis Consumer is an exactly-once parallel streaming data source that subscribes to multiple AWS Kinesis streams within the same AWS service region, and can handle resharding of streams.

Kinesis Sink

PartitionKeyGenerator(j_partition_key_generator)	This is a generator convert from an input element to the partition key, a string.
KinesisStreamsSink(j_kinesis_streams_sink)	A Kinesis Data Streams (KDS) Sink that performs async requests against a destination stream using the buffering protocol.
KinesisStreamsSinkBuilder()	Builder to construct KinesisStreamsSink.
KinesisFirehoseSink(j_kinesis_firehose_sink)	A Kinesis Data Firehose (KDF) Sink that performs async requests against a destination delivery stream using the buffering protocol.
KinesisFirehoseSinkBuilder()	Builder to construct KinesisFirehoseSink.

Pulsar

Pulsar Source

StartCursor(_j_start_cursor)	A factory class for users to specify the start position of a pulsar subscription.
StopCursor(_j_stop_cursor)	A factory class for users to specify the stop position of a pulsar subscription.
RangeGenerator(j_range_generator)	A generator for generating the TopicRange for given topic.
PulsarSource(j_pulsar_source)	The Source implementation of Pulsar.
PulsarSourceBuilder()	The builder class for PulsarSource to make it easier for the users to construct a PulsarSource.

Pulsar Sink

TopicRoutingMode(value)	The routing policy for choosing the desired topic by the given message.
MessageDelayer(_j_message_delayer)	A delayer for Pulsar broker passing the sent message to the downstream consumer.
PulsarSink(j_pulsar_sink)	The Sink implementation of Pulsar.
PulsarSinkBuilder()	The builder class for PulsarSink to make it easier for the users to construct a PulsarSink.

Jdbc

JdbcSink(j_jdbc_sink)
JdbcConnectionOptions(j_jdbc_connection_options)	JDBC connection options.
JdbcExecutionOptions(j_jdbc_execution_options)	JDBC sink batch options.

RMQ

RMQConnectionConfig(j_rmq_connection_config)	Connection Configuration for RMQ.
RMQSource(connection_config, queue_name, ...)
RMQSink(connection_config, queue_name, ...)

Elasticsearch

FlushBackoffType(value)	Used to control whether the sink should retry failed requests at all or with which kind back off strategy.
ElasticsearchEmitter(j_emitter)	Emitter which is used by sinks to prepare elements for sending them to Elasticsearch.
Elasticsearch6SinkBuilder()	Builder to construct an Elasticsearch 6 compatible ElasticsearchSink.
Elasticsearch7SinkBuilder()	Builder to construct an Elasticsearch 7 compatible ElasticsearchSink.
ElasticsearchSink(j_elasticsearch_sink)	Flink Sink to insert or update data in an Elasticsearch index.

Cassandra

CassandraSink(j_cassandra_sink)	Sets the ClusterBuilder for this sink.
ConsistencyLevel(value)	The consistency level
MapperOptions()	This class is used to configure a Mapper after deployment.
ClusterBuilder(j_cluster_builder)	This class is used to configure a Cluster after deployment.
CassandraCommitter(j_checkpoint_committer)	CheckpointCommitter that saves information about completed checkpoints within a separate table in a cassandra database.
CassandraFailureHandler(...)	Handle a failed Throwable.