Package org.apache.storm.perf.bolt

Class CountBolt

java.lang.Object

org.apache.storm.topology.base.BaseComponent

org.apache.storm.topology.base.BaseBasicBolt

org.apache.storm.perf.bolt.CountBolt

All Implemented Interfaces:

Serializable, IBasicBolt, IComponent

public class CountBolt
extends BaseBasicBolt

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final String	FIELDS_COUNT
static final String	FIELDS_WORD

Constructor Summary

Constructors

Constructor	Description
CountBolt()

Method Summary

Modifier and Type	Method	Description
void	declareOutputFields(OutputFieldsDeclarer declarer)	Declare the output schema for all the streams of this topology.
void	execute(Tuple tuple, BasicOutputCollector collector)	Process the input tuple and optionally emit new tuples based on the input tuple.
void	prepare(Map<String,Object> topoConf, TopologyContext context)

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

cleanup

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 Details

FIELDS_WORD

public static final String FIELDS_WORD

See Also:

• Constant Field Values

FIELDS_COUNT

public static final String FIELDS_COUNT

See Also:

• Constant Field Values

Constructor Details

CountBolt

public CountBolt()

Method Details

prepare

public void prepare(Map<String,Object> topoConf,
 TopologyContext context)

Specified by:

prepare in interface IBasicBolt

Overrides:

prepare in class BaseBasicBolt

execute

public void execute(Tuple tuple,
 BasicOutputCollector collector)

Description copied from interface: IBasicBolt

Process the input tuple and optionally emit new tuples based on the input tuple.

All acking is managed for you. Throw a FailedException if you want to fail the tuple.

declareOutputFields

public void declareOutputFields(OutputFieldsDeclarer declarer)

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