Package org.apache.storm.perf.bolt
Class CountBolt
- java.lang.Object
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- org.apache.storm.topology.base.BaseComponent
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- org.apache.storm.topology.base.BaseBasicBolt
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- org.apache.storm.perf.bolt.CountBolt
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- All Implemented Interfaces:
Serializable,IBasicBolt,IComponent
public class CountBolt extends BaseBasicBolt
- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description static StringFIELDS_COUNTstatic StringFIELDS_WORD
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Constructor Summary
Constructors Constructor Description CountBolt()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description voiddeclareOutputFields(OutputFieldsDeclarer declarer)Declare the output schema for all the streams of this topology.voidexecute(Tuple tuple, BasicOutputCollector collector)Process the input tuple and optionally emit new tuples based on the input tuple.voidprepare(Map<String,Object> topoConf, TopologyContext context)-
Methods inherited from class org.apache.storm.topology.base.BaseBasicBolt
cleanup
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Methods inherited from class org.apache.storm.topology.base.BaseComponent
getComponentConfiguration
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.apache.storm.topology.IComponent
getComponentConfiguration
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Field Detail
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FIELDS_WORD
public static final String FIELDS_WORD
- See Also:
- Constant Field Values
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FIELDS_COUNT
public static final String FIELDS_COUNT
- See Also:
- Constant Field Values
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Method Detail
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prepare
public void prepare(Map<String,Object> topoConf, TopologyContext context)
- Specified by:
preparein interfaceIBasicBolt- Overrides:
preparein classBaseBasicBolt
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execute
public void execute(Tuple tuple, BasicOutputCollector collector)
Description copied from interface:IBasicBoltProcess 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.
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declareOutputFields
public void declareOutputFields(OutputFieldsDeclarer declarer)
Description copied from interface:IComponentDeclare 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
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