io.siddhi.extension.io.kafka.sink

Class KafkaSink

java.lang.Object

io.siddhi.core.stream.output.sink.Sink<KafkaSink.KafkaSinkState>

io.siddhi.extension.io.kafka.sink.KafkaSink

All Implemented Interfaces:

io.siddhi.core.stream.output.sink.SinkListener

Direct Known Subclasses:

KafkaMultiDCSink

public class KafkaSink
extends io.siddhi.core.stream.output.sink.Sink<KafkaSink.KafkaSinkState>

This class implements a Kafka sink to publish Siddhi events to a kafka cluster.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	KafkaSink.KafkaSinkState State class for Kafka sink.

Nested classes/interfaces inherited from class io.siddhi.core.stream.output.sink.Sink

io.siddhi.core.stream.output.sink.Sink.OnErrorAction

Field Summary

Fields

Modifier and Type	Field and Description
protected String	bootstrapServers
protected Boolean	isBinaryMessage
protected static String	KAFKA_MESSAGE_KEY
protected static String	KAFKA_PARTITION_NO
protected static String	KAFKA_PUBLISH_TOPIC
protected io.siddhi.core.util.transport.Option	keyOption
protected String	optionalConfigs
static String	SEQ_NO_HEADER_DELIMITER
static String	SEQ_NO_HEADER_FIELD_SEPERATOR
protected String	sequenceId

Fields inherited from class io.siddhi.core.stream.output.sink.Sink

isTryingToConnect

Constructor Summary

Constructors

Constructor and Description
KafkaSink()

Method Summary

Modifier and Type	Method and Description
void	connect()
void	destroy()
void	disconnect()
protected io.siddhi.core.stream.ServiceDeploymentInfo	exposeServiceDeploymentInfo()
byte[]	getSequencedBinaryPayloadToSend(byte[] payload, KafkaSink.KafkaSinkState kafkaSinkState)
String[]	getSupportedDynamicOptions()
Class[]	getSupportedInputEventClasses()
protected io.siddhi.core.util.snapshot.state.StateFactory<KafkaSink.KafkaSinkState>	init(io.siddhi.query.api.definition.StreamDefinition outputStreamDefinition, io.siddhi.core.util.transport.OptionHolder optionHolder, io.siddhi.core.util.config.ConfigReader sinkConfigReader, io.siddhi.core.config.SiddhiAppContext siddhiAppContext)
void	publish(Object payload, io.siddhi.core.util.transport.DynamicOptions dynamicOptions, KafkaSink.KafkaSinkState kafkaSinkState)

Methods inherited from class io.siddhi.core.stream.output.sink.Sink

connectWithRetry, getHandler, getMapper, getServiceDeploymentInfoList, getStreamDefinition, getType, init, initOnlyTransport, isConnected, isStateful, onError, publish, retryPublish, setConnected, shutdown

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

SEQ_NO_HEADER_DELIMITER

public static final String SEQ_NO_HEADER_DELIMITER

See Also:

Constant Field Values

SEQ_NO_HEADER_FIELD_SEPERATOR

public static final String SEQ_NO_HEADER_FIELD_SEPERATOR

See Also:

Constant Field Values

KAFKA_PUBLISH_TOPIC

protected static final String KAFKA_PUBLISH_TOPIC

See Also:

Constant Field Values

KAFKA_MESSAGE_KEY

protected static final String KAFKA_MESSAGE_KEY

See Also:

Constant Field Values

KAFKA_PARTITION_NO

protected static final String KAFKA_PARTITION_NO

See Also:

Constant Field Values

bootstrapServers

protected String bootstrapServers

optionalConfigs

protected String optionalConfigs

sequenceId

protected String sequenceId

isBinaryMessage

protected Boolean isBinaryMessage

keyOption

protected io.siddhi.core.util.transport.Option keyOption

Constructor Detail

KafkaSink

public KafkaSink()

Method Detail

init

protected io.siddhi.core.util.snapshot.state.StateFactory<KafkaSink.KafkaSinkState> init(io.siddhi.query.api.definition.StreamDefinition outputStreamDefinition,
                                                                                         io.siddhi.core.util.transport.OptionHolder optionHolder,
                                                                                         io.siddhi.core.util.config.ConfigReader sinkConfigReader,
                                                                                         io.siddhi.core.config.SiddhiAppContext siddhiAppContext)

Specified by:

init in class io.siddhi.core.stream.output.sink.Sink<KafkaSink.KafkaSinkState>

publish

public void publish(Object payload,
                    io.siddhi.core.util.transport.DynamicOptions dynamicOptions,
                    KafkaSink.KafkaSinkState kafkaSinkState)
             throws io.siddhi.core.exception.ConnectionUnavailableException

Specified by:

publish in class io.siddhi.core.stream.output.sink.Sink<KafkaSink.KafkaSinkState>

Throws:

io.siddhi.core.exception.ConnectionUnavailableException

connect

public void connect()
             throws io.siddhi.core.exception.ConnectionUnavailableException

Specified by:

connect in class io.siddhi.core.stream.output.sink.Sink<KafkaSink.KafkaSinkState>

Throws:

io.siddhi.core.exception.ConnectionUnavailableException

disconnect

public void disconnect()

Specified by:

disconnect in class io.siddhi.core.stream.output.sink.Sink<KafkaSink.KafkaSinkState>

destroy

public void destroy()

Specified by:

destroy in class io.siddhi.core.stream.output.sink.Sink<KafkaSink.KafkaSinkState>

getSupportedInputEventClasses

public Class[] getSupportedInputEventClasses()

Specified by:

getSupportedInputEventClasses in class io.siddhi.core.stream.output.sink.Sink<KafkaSink.KafkaSinkState>

exposeServiceDeploymentInfo

protected io.siddhi.core.stream.ServiceDeploymentInfo exposeServiceDeploymentInfo()

Specified by:

exposeServiceDeploymentInfo in class io.siddhi.core.stream.output.sink.Sink<KafkaSink.KafkaSinkState>

getSupportedDynamicOptions

public String[] getSupportedDynamicOptions()

Specified by:

getSupportedDynamicOptions in class io.siddhi.core.stream.output.sink.Sink<KafkaSink.KafkaSinkState>

getSequencedBinaryPayloadToSend

public byte[] getSequencedBinaryPayloadToSend(byte[] payload,
                                              KafkaSink.KafkaSinkState kafkaSinkState)