public class TwitterSampleSpout extends BaseRichSpout
Constructor and Description |
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TwitterSampleSpout() |
TwitterSampleSpout(String consumerKey,
String consumerSecret,
String accessToken,
String accessTokenSecret,
String[] keyWords) |
Modifier and Type | Method and Description |
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void |
ack(Object id)
Storm has determined that the tuple emitted by this spout with the msgId identifier
has been fully processed.
|
void |
close()
Called when an ISpout is going to be shutdown.
|
void |
declareOutputFields(OutputFieldsDeclarer declarer)
Declare the output schema for all the streams of this topology.
|
void |
fail(Object id)
The tuple emitted by this spout with the msgId identifier has failed to be
fully processed.
|
Map<String,Object> |
getComponentConfiguration()
Declare configuration specific to this component.
|
void |
nextTuple()
When this method is called, Storm is requesting that the Spout emit tuples to the
output collector.
|
void |
open(Map conf,
TopologyContext context,
SpoutOutputCollector collector)
Called when a task for this component is initialized within a worker on the cluster.
|
activate, deactivate
public TwitterSampleSpout(String consumerKey, String consumerSecret, String accessToken, String accessTokenSecret, String[] keyWords)
public TwitterSampleSpout()
public void open(Map conf, TopologyContext context, SpoutOutputCollector collector)
ISpout
conf
- The Storm configuration for this spout. 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 spout. Tuples can be emitted at any time, including the open and close methods. The collector is thread-safe and should be saved as an instance variable of this spout object.public void nextTuple()
ISpout
public void close()
ISpout
close
in interface ISpout
close
in class BaseRichSpout
public Map<String,Object> getComponentConfiguration()
IComponent
TopologyBuilder
getComponentConfiguration
in interface IComponent
getComponentConfiguration
in class BaseComponent
public void ack(Object id)
ISpout
ack
in interface ISpout
ack
in class BaseRichSpout
public void fail(Object id)
ISpout
fail
in interface ISpout
fail
in class BaseRichSpout
public void declareOutputFields(OutputFieldsDeclarer declarer)
IComponent
declarer
- this is used to declare output stream ids, output fields, and whether or not each output stream is a direct streamCopyright © 2016 The Apache Software Foundation. All Rights Reserved.