org.apache.storm.kafka.bolt

Class KafkaBolt<K,V>

java.lang.Object

org.apache.storm.topology.base.BaseComponent

org.apache.storm.topology.base.BaseRichBolt

org.apache.storm.topology.base.BaseTickTupleAwareRichBolt

org.apache.storm.kafka.bolt.KafkaBolt<K,V>

All Implemented Interfaces:

Serializable, IBolt, IComponent, IRichBolt

Deprecated.

Please use the KafkaBolt in storm-kafka-client

@Deprecated
public class KafkaBolt<K,V>
extends BaseTickTupleAwareRichBolt

Bolt implementation that can send Tuple data to Kafka

It expects the producer configuration and topic in storm config under

‘kafka.broker.properties’ and ‘topic’

respectively.

This bolt uses 0.8.2 Kafka Producer API.

It works for sending tuples to older Kafka version (0.8.1).

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static String	TOPIC Deprecated.

Constructor Summary

Constructors

Constructor and Description
KafkaBolt() Deprecated.

Method Summary

Modifier and Type	Method and Description
void	cleanup() Deprecated. Called when an IBolt is going to be shutdown.
void	declareOutputFields(OutputFieldsDeclarer declarer) Deprecated. Declare the output schema for all the streams of this topology.
void	prepare(Map stormConf, TopologyContext context, OutputCollector collector) Deprecated. Called when a task for this component is initialized within a worker on the cluster.
protected void	process(Tuple input) Deprecated. Process a single non-tick tuple of input.
void	setAsync(boolean async) Deprecated.
void	setFireAndForget(boolean fireAndForget) Deprecated.
KafkaBolt<K,V>	withProducerProperties(Properties producerProperties) Deprecated.
KafkaBolt<K,V>	withTopicSelector(KafkaTopicSelector selector) Deprecated.
KafkaBolt<K,V>	withTupleToKafkaMapper(TupleToKafkaMapper<K,V> mapper) Deprecated.

Methods inherited from class org.apache.storm.topology.base.BaseTickTupleAwareRichBolt

execute, onTickTuple

Methods inherited from class org.apache.storm.topology.base.BaseComponent

getComponentConfiguration

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.storm.topology.IComponent

getComponentConfiguration

Field Detail

TOPIC

public static final String TOPIC

Deprecated.

See Also:

Constant Field Values

Constructor Detail

KafkaBolt

public KafkaBolt()

Deprecated.

Method Detail

withTupleToKafkaMapper

public KafkaBolt<K,V> withTupleToKafkaMapper(TupleToKafkaMapper<K,V> mapper)

Deprecated.

withTopicSelector

public KafkaBolt<K,V> withTopicSelector(KafkaTopicSelector selector)

Deprecated.

withProducerProperties

public KafkaBolt<K,V> withProducerProperties(Properties producerProperties)

Deprecated.

prepare

public void prepare(Map stormConf,
                    TopologyContext context,
                    OutputCollector collector)

Deprecated.

Description copied from interface: IBolt

Called when a task for this component is initialized within a worker on the cluster. It provides the bolt with the environment in which the bolt executes.

This includes the:

Parameters:

stormConf - The Storm configuration for this bolt. This is the configuration provided to the topology merged in with cluster configuration on this machine.

context - This object can be used to get information about this task’s place within the topology, including the task id and component id of this task, input and output information, etc.

collector - The collector is used to emit tuples from this bolt. Tuples can be emitted at any time, including the prepare and cleanup methods. The collector is thread-safe and should be saved as an instance variable of this bolt object.

process

protected void process(Tuple input)

Deprecated.

Description copied from class: BaseTickTupleAwareRichBolt

Process a single non-tick tuple of input. Implementation needs to handle ack manually. More details on IBolt.execute(Tuple).

Specified by:

process in class BaseTickTupleAwareRichBolt

Parameters:

input - The input tuple to be processed.

declareOutputFields

public void declareOutputFields(OutputFieldsDeclarer declarer)

Deprecated.

Description copied from interface: IComponent

Declare the output schema for all the streams of this topology.

Parameters:

declarer - this is used to declare output stream ids, output fields, and whether or not each output stream is a direct stream

cleanup

public void cleanup()

Deprecated.

Description copied from interface: IBolt

Called when an IBolt is going to be shutdown. There is no guarentee that cleanup will be called, because the supervisor kill -9’s worker processes on the cluster.

The one context where cleanup is guaranteed to be called is when a topology is killed when running Storm in local mode.

Specified by:

cleanup in interface IBolt

Overrides:

cleanup in class BaseRichBolt

setFireAndForget

public void setFireAndForget(boolean fireAndForget)

Deprecated.

setAsync

public void setAsync(boolean async)

Deprecated.