stream.storm

Class StreamSpout

java.lang.Object

backtype.storm.topology.base.BaseComponent

backtype.storm.topology.base.BaseRichSpout

stream.storm.StreamSpout

All Implemented Interfaces:

backtype.storm.spout.ISpout, backtype.storm.topology.IComponent, backtype.storm.topology.IRichSpout, Serializable

public class StreamSpout
extends backtype.storm.topology.base.BaseRichSpout

Author:

Christian Bockermann

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected String	className
protected String	id
(package private) static org.slf4j.Logger	log
protected backtype.storm.spout.SpoutOutputCollector	output
protected Variables	parameters
private static long	serialVersionUID The unique class ID
(package private) Stream	stream
protected String	xml

Constructor Summary

Constructors

Constructor and Description
StreamSpout(String xml, String id, String className, Map<String,String> params)

Method Summary

Methods

Modifier and Type	Method and Description
protected Stream	createStream()
void	declareOutputFields(backtype.storm.topology.OutputFieldsDeclarer declarer)
void	nextTuple()
void	open(Map conf, backtype.storm.task.TopologyContext context, backtype.storm.spout.SpoutOutputCollector collector)
protected void	sleep(long ms)

Methods inherited from class backtype.storm.topology.base.BaseRichSpout

ack, activate, close, deactivate, fail

Methods inherited from class backtype.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 backtype.storm.topology.IComponent

getComponentConfiguration

Field Detail

serialVersionUID

private static final long serialVersionUID

The unique class ID

See Also:

Constant Field Values

log

static org.slf4j.Logger log

stream

transient Stream stream

output

protected backtype.storm.spout.SpoutOutputCollector output

className

protected final String className

parameters

protected final Variables parameters

xml

protected final String xml

id

protected final String id

Constructor Detail

StreamSpout

public StreamSpout(String xml,
           String id,
           String className,
           Map<String,String> params)
            throws Exception

Throws:

Exception

Method Detail

createStream

protected Stream createStream()
                       throws Exception

Throws:

Exception

open

public void open(Map conf,
        backtype.storm.task.TopologyContext context,
        backtype.storm.spout.SpoutOutputCollector collector)

See Also:

ISpout.open(java.util.Map, backtype.storm.task.TopologyContext, backtype.storm.spout.SpoutOutputCollector)

nextTuple

public void nextTuple()

See Also:

ISpout.nextTuple()

sleep

protected void sleep(long ms)

declareOutputFields

public void declareOutputFields(backtype.storm.topology.OutputFieldsDeclarer declarer)

See Also:

backtype.storm.topology.IComponent#declareOutputFields(backtype.storm .topology.OutputFieldsDeclarer)