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

Methods

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