stream

Class StreamTopology

java.lang.Object

stream.StreamTopology

public class StreamTopology
extends Object

Author:

Christian Bockermann <christian.bockermann@udo.edu>

Field Summary

Fields

Modifier and Type	Field and Description
Map<String,backtype.storm.topology.BoltDeclarer>	bolts
backtype.storm.topology.TopologyBuilder	builder
(package private) static org.slf4j.Logger	log
Map<String,backtype.storm.topology.SpoutDeclarer>	spouts
(package private) Set<Subscription>	subscriptions
static String	UUID_ATTRIBUTE
Variables	variables

Constructor Summary

Constructors

Modifier	Constructor and Description
private	StreamTopology(backtype.storm.topology.TopologyBuilder builder)

Method Summary

Modifier and Type	Method and Description
void	addBolt(String id, backtype.storm.topology.BoltDeclarer bolt)
void	addSpout(String id, backtype.storm.topology.SpoutDeclarer spout)
void	addSubscription(Subscription sub)
static StreamTopology	build(Document doc, backtype.storm.topology.TopologyBuilder builder) Creates a new instance of a StreamTopology based on the given document and using the specified TopologyBuilder.
static StreamTopology	create(Document doc) Creates a new instance of a StreamTopology based on the given document.
backtype.storm.generated.StormTopology	createTopology() This method creates a new instance of type StormTopology based on the topology that has been created from the DOM document.
Map<String,backtype.storm.topology.BoltDeclarer>	getBolts() This method returns an unmodifiable map of bolts.
protected static List<String>	getInputNames(Element el)
Map<String,backtype.storm.topology.SpoutDeclarer>	getSpouts() This method returns an unmodifiable map of spouts.
backtype.storm.topology.TopologyBuilder	getTopologyBuilder()
Variables	getVariables()
static void	main(String[] args)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

UUID_ATTRIBUTE

public static final String UUID_ATTRIBUTE

See Also:

Constant Field Values

log

static org.slf4j.Logger log

builder

public final backtype.storm.topology.TopologyBuilder builder

bolts

public final Map<String,backtype.storm.topology.BoltDeclarer> bolts

spouts

public final Map<String,backtype.storm.topology.SpoutDeclarer> spouts

variables

public final Variables variables

subscriptions

final Set<Subscription> subscriptions

Constructor Detail

StreamTopology

private StreamTopology(backtype.storm.topology.TopologyBuilder builder)

Parameters:

builder -

Method Detail

getTopologyBuilder

public backtype.storm.topology.TopologyBuilder getTopologyBuilder()

getVariables

public Variables getVariables()

addSubscription

public void addSubscription(Subscription sub)

getBolts

public Map<String,backtype.storm.topology.BoltDeclarer> getBolts()

This method returns an unmodifiable map of bolts. The keys of this map are the bolts' identifiers.

Returns:

getSpouts

public Map<String,backtype.storm.topology.SpoutDeclarer> getSpouts()

This method returns an unmodifiable map of spouts. The keys of this map are the spouts' identifiers.

Returns:

create

public static StreamTopology create(Document doc)
                             throws Exception

Creates a new instance of a StreamTopology based on the given document. This also creates a standard TopologyBuilder to build the associated Storm Topology.

Parameters:

doc - The DOM document that defines the topology.

Returns:

Throws:

Exception

build

public static StreamTopology build(Document doc,
                                   backtype.storm.topology.TopologyBuilder builder)
                            throws Exception

Creates a new instance of a StreamTopology based on the given document and using the specified TopologyBuilder.

Parameters:

doc -

builder -

Returns:

Throws:

Exception

addBolt

public void addBolt(String id,
                    backtype.storm.topology.BoltDeclarer bolt)

addSpout

public void addSpout(String id,
                     backtype.storm.topology.SpoutDeclarer spout)

getInputNames

protected static List<String> getInputNames(Element el)

createTopology

public backtype.storm.generated.StormTopology createTopology()

This method creates a new instance of type StormTopology based on the topology that has been created from the DOM document.

Returns:

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception