Package org.wso2.carbon.inbound.endpoint.protocol.kafka

Class KAFKAMessageListener

java.lang.Object

org.wso2.carbon.inbound.endpoint.protocol.kafka.AbstractKafkaMessageListener

org.wso2.carbon.inbound.endpoint.protocol.kafka.KAFKAMessageListener

public class KAFKAMessageListener
extends AbstractKafkaMessageListener

Nested Class Summary

Nested classes/interfaces inherited from class org.wso2.carbon.inbound.endpoint.protocol.kafka.AbstractKafkaMessageListener

AbstractKafkaMessageListener.CONSUMER_TYPE

Field Summary

Fields inherited from class org.wso2.carbon.inbound.endpoint.protocol.kafka.AbstractKafkaMessageListener

consumerConnector, consumerIte, injectHandler, kafkaProperties, log, threadCount, topics

Constructor Summary

Constructors

Constructor	Description
KAFKAMessageListener(int threadCount, List<String> topics, Properties kafkaProperties, InjectHandler injectHandler)

Method Summary

Modifier and Type	Method	Description
void	consumeMultipleTopics(String name)	Consume from multiple topics
boolean	createKafkaConsumerConnector()	Create the connection with the zookeeper to consume the messages
boolean	hasMultipleTopicsToConsume()	Used to check whether there are multiple topics to consume from
boolean	hasNext()	Check ConsumerIterator whether It has next value
boolean	hasNext(kafka.consumer.ConsumerIterator<byte[],byte[]> consumerIterator)
void	injectMessageToESB(String name)	Poll the messages from the zookeeper and injected to the sequence
void	injectMessageToESB(String sequenceName, kafka.consumer.ConsumerIterator<byte[],byte[]> consumerIterator)
void	start()	Starts topics consuming the messages,the message can be consumed by topic or topic filter which are white list and black list.
protected void	startConsumers(List<kafka.consumer.KafkaStream<byte[],byte[]>> streams)	Use one stream from kafka stream iterator

Methods inherited from class org.wso2.carbon.inbound.endpoint.protocol.kafka.AbstractKafkaMessageListener

destroy

Methods inherited from class java.lang.Object

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

Constructor Details

KAFKAMessageListener

public KAFKAMessageListener(int threadCount,
 List<String> topics,
 Properties kafkaProperties,
 InjectHandler injectHandler)
                     throws Exception

Throws:

Exception

Method Details

createKafkaConsumerConnector

public boolean createKafkaConsumerConnector()
                                     throws Exception

Create the connection with the zookeeper to consume the messages

Specified by:

createKafkaConsumerConnector in class AbstractKafkaMessageListener

Throws:

Exception

start

public void start()
           throws Exception

Starts topics consuming the messages,the message can be consumed by topic or topic filter which are white list and black list.

Specified by:

start in class AbstractKafkaMessageListener

Throws:

Exception

startConsumers

protected void startConsumers(List<kafka.consumer.KafkaStream<byte[],byte[]>> streams)

Use one stream from kafka stream iterator

Parameters:

streams -

injectMessageToESB

public void injectMessageToESB(String name)

Description copied from class: AbstractKafkaMessageListener

Poll the messages from the zookeeper and injected to the sequence

Specified by:

injectMessageToESB in class AbstractKafkaMessageListener

injectMessageToESB

public void injectMessageToESB(String sequenceName,
 kafka.consumer.ConsumerIterator<byte[],byte[]> consumerIterator)

hasNext

public boolean hasNext()

Description copied from class: AbstractKafkaMessageListener

Check ConsumerIterator whether It has next value

Specified by:

hasNext in class AbstractKafkaMessageListener

hasNext

public boolean hasNext(kafka.consumer.ConsumerIterator<byte[],byte[]> consumerIterator)

hasMultipleTopicsToConsume

public boolean hasMultipleTopicsToConsume()

Description copied from class: AbstractKafkaMessageListener

Used to check whether there are multiple topics to consume from

Overrides:

hasMultipleTopicsToConsume in class AbstractKafkaMessageListener

consumeMultipleTopics

public void consumeMultipleTopics(String name)

Description copied from class: AbstractKafkaMessageListener

Consume from multiple topics

Overrides:

consumeMultipleTopics in class AbstractKafkaMessageListener