org.apache.storm.cassandra.bolt

Class BatchCassandraWriterBolt

java.lang.Object

org.apache.storm.topology.base.BaseComponent

org.apache.storm.topology.base.BaseRichBolt

org.apache.storm.topology.base.BaseTickTupleAwareRichBolt

org.apache.storm.cassandra.bolt.BaseCassandraBolt<List<Tuple>>

org.apache.storm.cassandra.bolt.BatchCassandraWriterBolt

All Implemented Interfaces:

Serializable, IBolt, IComponent, IRichBolt

public class BatchCassandraWriterBolt
extends BaseCassandraBolt<List<Tuple>>

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_EMIT_FREQUENCY

Fields inherited from class org.apache.storm.cassandra.bolt.BaseCassandraBolt

cassandraConfConfig, client, clientProvider, outputCollector, session, stormConfig

Constructor Summary

Constructors

Constructor and Description
BatchCassandraWriterBolt(CQLStatementTupleMapper tupleMapper) Creates a new CassandraWriterBolt instance.
BatchCassandraWriterBolt(CQLStatementTupleMapper tupleMapper, int tickFrequencyInSeconds) Creates a new CassandraWriterBolt instance.

Method Summary

Modifier and Type	Method and Description
protected AsyncResultHandler<List<Tuple>>	getAsyncHandler()
Map<String,Object>	getComponentConfiguration()
protected void	onTickTuple(Tuple tuple)
void	prepare(Map stormConfig, TopologyContext topologyContext, OutputCollector outputCollector)
void	prepareAndExecuteStatement()
protected void	process(Tuple input)
BatchCassandraWriterBolt	withQueueSize(int size) Maximum number of tuple kept in memory before inserting batches to cassandra.
BatchCassandraWriterBolt	withTickFrequency(long time, TimeUnit unit)

Methods inherited from class org.apache.storm.cassandra.bolt.BaseCassandraBolt

cleanup, declareOutputFields, execute, getAsyncExecutor, getMapper, getResultHandler, withOutputFields, withResultHandler, withStreamOutputFields

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_EMIT_FREQUENCY

public static final int DEFAULT_EMIT_FREQUENCY

See Also:

Constant Field Values

Constructor Detail

BatchCassandraWriterBolt

public BatchCassandraWriterBolt(CQLStatementTupleMapper tupleMapper)

Creates a new CassandraWriterBolt instance.

Parameters:

tupleMapper -

BatchCassandraWriterBolt

public BatchCassandraWriterBolt(CQLStatementTupleMapper tupleMapper,
                                int tickFrequencyInSeconds)

Creates a new CassandraWriterBolt instance.

Parameters:

tupleMapper -

Method Detail

prepare

public void prepare(Map stormConfig,
                    TopologyContext topologyContext,
                    OutputCollector outputCollector)

Specified by:

prepare in interface IBolt

Overrides:

prepare in class BaseCassandraBolt<List<Tuple>>

getAsyncHandler

protected AsyncResultHandler<List<Tuple>> getAsyncHandler()

Specified by:

getAsyncHandler in class BaseCassandraBolt<List<Tuple>>

process

protected void process(Tuple input)

Specified by:

process in class BaseTickTupleAwareRichBolt

onTickTuple

protected void onTickTuple(Tuple tuple)

Overrides:

onTickTuple in class BaseTickTupleAwareRichBolt

prepareAndExecuteStatement

public void prepareAndExecuteStatement()

withTickFrequency

public BatchCassandraWriterBolt withTickFrequency(long time,
                                                  TimeUnit unit)

withQueueSize

public BatchCassandraWriterBolt withQueueSize(int size)

Maximum number of tuple kept in memory before inserting batches to cassandra.

Parameters:

size - the max queue size.

Returns:

this

getComponentConfiguration

public Map<String,Object> getComponentConfiguration()

Specified by:

getComponentConfiguration in interface IComponent

Overrides:

getComponentConfiguration in class BaseCassandraBolt<List<Tuple>>