eu.europeana.cloud.service.dps.storm

Class NotificationBolt

java.lang.Object

org.apache.storm.topology.base.BaseComponent

org.apache.storm.topology.base.BaseRichBolt

eu.europeana.cloud.service.dps.storm.NotificationBolt

All Implemented Interfaces:

Serializable, org.apache.storm.task.IBolt, org.apache.storm.topology.IComponent, org.apache.storm.topology.IRichBolt

public class NotificationBolt
extends org.apache.storm.topology.base.BaseRichBolt

This bolt is responsible for store notifications to Cassandra.

Author:

Pavel Kefurt

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.storm.task.OutputCollector	outputCollector
protected Map	stormConfig
protected org.apache.storm.task.TopologyContext	topologyContext

Constructor Summary

Constructors

Constructor and Description
NotificationBolt(String hosts, int port, String keyspaceName, String userName, String password) Constructor of notification bolt.

Method Summary

Methods

Modifier and Type	Method and Description
static void	clearCache()
void	declareOutputFields(org.apache.storm.topology.OutputFieldsDeclarer ofd)
void	execute(org.apache.storm.tuple.Tuple tuple)
void	prepare(Map stormConf, org.apache.storm.task.TopologyContext tc, org.apache.storm.task.OutputCollector oc)

Methods inherited from class org.apache.storm.topology.base.BaseRichBolt

cleanup

Methods inherited from class org.apache.storm.topology.base.BaseComponent

getComponentConfiguration

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.storm.topology.IComponent

getComponentConfiguration

Field Detail

stormConfig

protected Map stormConfig

topologyContext

protected org.apache.storm.task.TopologyContext topologyContext

outputCollector

protected org.apache.storm.task.OutputCollector outputCollector

Constructor Detail

NotificationBolt

public NotificationBolt(String hosts,
                int port,
                String keyspaceName,
                String userName,
                String password)

Constructor of notification bolt.

Parameters:

hosts - Cassandra hosts separated by comma (e.g. localhost,192.168.47.129)

port - Cassandra port

keyspaceName - Cassandra keyspace name

userName - Cassandra username

password - Cassandra password

Method Detail

execute

public void execute(org.apache.storm.tuple.Tuple tuple)

prepare

public void prepare(Map stormConf,
           org.apache.storm.task.TopologyContext tc,
           org.apache.storm.task.OutputCollector oc)

declareOutputFields

public void declareOutputFields(org.apache.storm.topology.OutputFieldsDeclarer ofd)

clearCache

public static void clearCache()