io.thill.kafkalite

Class KafkaLite

java.lang.Object

io.thill.kafkalite.KafkaLite

public class KafkaLite
extends Object

Manage the lifecycle and topics

Author:

Eric Thill

Constructor Summary

Constructors

Constructor and Description
KafkaLite()

Method Summary

Modifier and Type	Method and Description
static void	clean() Delete all existing Kafka topics.
static void	cleanOnShutdown() Clean kafka and zookeeper directories on JVM shutdown
static Properties	consumerProperties(Class<?> keyDerserializerType, Class<?> valueDeserializerType) Create a consumer properties using the given deserializers
static boolean	createTopic(String topic, int partitions) If started, create a topic on the running Kafka instance with a 1 hour retention.
static boolean	createTopic(String topic, int partitions, long retentionMillis) If started, create a topic on the running Kafka instance.
static boolean	deleteTopic(String topic) If started, delete a topic on the running Kafka instance.
static void	main(String... args) Main method to start a KafkaLite instance.
static Properties	producerProperties(Class<?> keySerializerType, Class<?> valueSerializerType) Create a producer properties using the given serializers
static void	reset() Clean and start
static void	start() If not already started, start Zookeeper and Kafka now.
static void	stop() If started, stop Kafka and Zookeeper now.

Methods inherited from class java.lang.Object

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

Constructor Detail

KafkaLite

public KafkaLite()

Method Detail

main

public static void main(String... args)
                 throws KafkaLiteException

Main method to start a KafkaLite instance. The KafkaLite instance will be stopped upon receiving a SIGINT signal.

Parameters:

args -

Throws:

KafkaLiteException

reset

public static void reset()
                  throws KafkaLiteException

Clean and start

Throws:

KafkaLiteException

start

public static void start()
                  throws KafkaLiteException

If not already started, start Zookeeper and Kafka now. The method will block until fully started.

Throws:

KafkaLiteException

stop

public static void stop()

If started, stop Kafka and Zookeeper now. This method will block until fully stopped.

clean

public static void clean()

Delete all existing Kafka topics. If started, delete topic commands will be send for all existing topics. If stopped, delete the Kafka directory will be deleted. This method blocks until the topics have been fully deleted.

createTopic

public static boolean createTopic(String topic,
                                  int partitions)

If started, create a topic on the running Kafka instance with a 1 hour retention.

Parameters:

topic -

partitions -

Returns:

true if Kafka was running, false otherwise

createTopic

public static boolean createTopic(String topic,
                                  int partitions,
                                  long retentionMillis)

If started, create a topic on the running Kafka instance.

Parameters:

topic -

partitions -

retentionMillis -

Returns:

true if Kafka was running, false otherwise

deleteTopic

public static boolean deleteTopic(String topic)

If started, delete a topic on the running Kafka instance.

Parameters:

topic -

Returns:

true if Kafka was running, false otherwise

cleanOnShutdown

public static void cleanOnShutdown()

Clean kafka and zookeeper directories on JVM shutdown

consumerProperties

public static Properties consumerProperties(Class<?> keyDerserializerType,
                                            Class<?> valueDeserializerType)

Create a consumer properties using the given deserializers

Parameters:

keyDerserializerType - The key deserializer type

valueDeserializerType - The value deserializer type

Returns:

The consumer properties

producerProperties

public static Properties producerProperties(Class<?> keySerializerType,
                                            Class<?> valueSerializerType)

Create a producer properties using the given serializers

Parameters:

keySerializerType - The key serializer type

valueSerializerType - The value serializer type

Returns:

The producer properties