org.apache.storm.jms.trident

Class TridentJmsSpout

java.lang.Object

org.apache.storm.jms.trident.TridentJmsSpout

All Implemented Interfaces:

Serializable, ITridentDataSource, ITridentSpout<JmsBatch>

public class TridentJmsSpout
extends Object
implements ITridentSpout<JmsBatch>

Trident implementation of the JmsSpout

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.storm.trident.spout.ITridentSpout

ITridentSpout.BatchCoordinator<X>, ITridentSpout.Emitter<X>

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_BATCH_SIZE
static String	MAX_BATCH_SIZE_CONF

Constructor Summary

Constructors

Constructor and Description
TridentJmsSpout() Create a TridentJmsSpout with a default name and acknowledge mode of AUTO_ACKNOWLEDGE

Method Summary

Modifier and Type	Method and Description
Map<String,Object>	getComponentConfiguration()
ITridentSpout.BatchCoordinator<JmsBatch>	getCoordinator(String txStateId, Map conf, TopologyContext context)
ITridentSpout.Emitter<JmsBatch>	getEmitter(String txStateId, Map conf, TopologyContext context)
Fields	getOutputFields()
TridentJmsSpout	named(String name) Set the name for this spout, to improve log identification
TridentJmsSpout	withJmsAcknowledgeMode(int jmsAcknowledgeMode) Set the JMS acknowledge mode for messages being processed by this spout.
TridentJmsSpout	withJmsProvider(JmsProvider provider) Set the JmsProvider implementation that this Spout will use to connect to a JMS javax.jms.Desination
TridentJmsSpout	withTupleProducer(JmsTupleProducer tupleProducer) Set the JmsTupleProducer implementation that will convert javax.jms.Message object to backtype.storm.tuple.Values objects to be emitted.

Methods inherited from class java.lang.Object

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

Field Detail

MAX_BATCH_SIZE_CONF

public static final String MAX_BATCH_SIZE_CONF

See Also:

Constant Field Values

DEFAULT_BATCH_SIZE

public static final int DEFAULT_BATCH_SIZE

See Also:

Constant Field Values

Constructor Detail

TridentJmsSpout

public TridentJmsSpout()

Create a TridentJmsSpout with a default name and acknowledge mode of AUTO_ACKNOWLEDGE

Method Detail

named

public TridentJmsSpout named(String name)

Set the name for this spout, to improve log identification

Parameters:

name - The name to be used in log messages

Returns:

This spout

withJmsProvider

public TridentJmsSpout withJmsProvider(JmsProvider provider)

Set the JmsProvider implementation that this Spout will use to connect to a JMS javax.jms.Desination

Parameters:

provider -

withTupleProducer

public TridentJmsSpout withTupleProducer(JmsTupleProducer tupleProducer)

Set the JmsTupleProducer implementation that will convert javax.jms.Message object to backtype.storm.tuple.Values objects to be emitted.

Parameters:

tupleProducer -

Returns:

This spout

withJmsAcknowledgeMode

public TridentJmsSpout withJmsAcknowledgeMode(int jmsAcknowledgeMode)

Set the JMS acknowledge mode for messages being processed by this spout.

Possible values:

• javax.jms.Session.AUTO_ACKNOWLEDGE
• javax.jms.Session.CLIENT_ACKNOWLEDGE
• javax.jms.Session.DUPS_OK_ACKNOWLEDGE

Parameters:

jmsAcknowledgeMode - The chosen acknowledge mode

Returns:

This spout

Throws:

IllegalArgumentException - if the mode is not recognized

getCoordinator

public ITridentSpout.BatchCoordinator<JmsBatch> getCoordinator(String txStateId,
                                                               Map conf,
                                                               TopologyContext context)

Specified by:

getCoordinator in interface ITridentSpout<JmsBatch>

getEmitter

public ITridentSpout.Emitter<JmsBatch> getEmitter(String txStateId,
                                                  Map conf,
                                                  TopologyContext context)

Specified by:

getEmitter in interface ITridentSpout<JmsBatch>

getComponentConfiguration

public Map<String,Object> getComponentConfiguration()

Specified by:

getComponentConfiguration in interface ITridentSpout<JmsBatch>

getOutputFields

public Fields getOutputFields()

Specified by:

getOutputFields in interface ITridentSpout<JmsBatch>