org.apache.storm.hdfs.spout

Class HdfsSpout

java.lang.Object

org.apache.storm.topology.base.BaseComponent

org.apache.storm.topology.base.BaseRichSpout

org.apache.storm.hdfs.spout.HdfsSpout

All Implemented Interfaces:

Serializable, ISpout, IComponent, IRichSpout

public class HdfsSpout
extends BaseRichSpout

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
HdfsSpout()

Method Summary

Modifier and Type	Method and Description
void	ack(Object msgId)
void	declareOutputFields(OutputFieldsDeclarer declarer)
protected void	emitData(List<Object> tuple, org.apache.storm.hdfs.spout.HdfsSpout.MessageId id)
void	fail(Object msgId)
SpoutOutputCollector	getCollector()
org.apache.hadoop.fs.Path	getLockDirPath()
void	nextTuple()
void	open(Map conf, TopologyContext context, SpoutOutputCollector collector)
HdfsSpout	withConfigKey(String configKey) set key name under which HDFS options are placed.
HdfsSpout	withOutputFields(String... fields) Name of the output field names.

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

activate, close, deactivate

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

Constructor Detail

HdfsSpout

public HdfsSpout()

Method Detail

withOutputFields

public HdfsSpout withOutputFields(String... fields)

Name of the output field names. Number of fields depends upon the reader type

withConfigKey

public HdfsSpout withConfigKey(String configKey)

set key name under which HDFS options are placed. (similar to HDFS bolt). default key name is ‘hdfs.config’

getLockDirPath

public org.apache.hadoop.fs.Path getLockDirPath()

getCollector

public SpoutOutputCollector getCollector()

nextTuple

public void nextTuple()

emitData

protected void emitData(List<Object> tuple,
                        org.apache.storm.hdfs.spout.HdfsSpout.MessageId id)

open

public void open(Map conf,
                 TopologyContext context,
                 SpoutOutputCollector collector)

ack

public void ack(Object msgId)

Specified by:

ack in interface ISpout

Overrides:

ack in class BaseRichSpout

fail

public void fail(Object msgId)

Specified by:

fail in interface ISpout

Overrides:

fail in class BaseRichSpout

declareOutputFields

public void declareOutputFields(OutputFieldsDeclarer declarer)