org.apache.storm.elasticsearch.bolt

Class EsPercolateBolt

java.lang.Object

org.apache.storm.topology.base.BaseComponent

org.apache.storm.topology.base.BaseRichBolt

org.apache.storm.topology.base.BaseTickTupleAwareRichBolt

org.apache.storm.elasticsearch.bolt.AbstractEsBolt

org.apache.storm.elasticsearch.bolt.EsPercolateBolt

All Implemented Interfaces:

Serializable, IBolt, IComponent, IRichBolt

public class EsPercolateBolt
extends AbstractEsBolt

Basic bolt for retrieve matched percolate queries.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.storm.elasticsearch.bolt.AbstractEsBolt

client, collector, objectMapper

Constructor Summary

Constructors

Constructor and Description
EsPercolateBolt(EsConfig esConfig) EsPercolateBolt constructor.
EsPercolateBolt(EsConfig esConfig, EsTupleMapper tupleMapper) EsPercolateBolt constructor.

Method Summary

Modifier and Type	Method and Description
void	declareOutputFields(OutputFieldsDeclarer outputFieldsDeclarer) Declare the output schema for all the streams of this topology.
void	prepare(Map<String,Object> map, TopologyContext topologyContext, OutputCollector outputCollector) Called when a task for this component is initialized within a worker on the cluster.
void	process(Tuple tuple) Process a single non-tick tuple of input.

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

execute, onTickTuple

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

Constructor Detail

EsPercolateBolt

public EsPercolateBolt(EsConfig esConfig)

EsPercolateBolt constructor.

Parameters:

esConfig - Elasticsearch configuration containing node addresses EsConfig

EsPercolateBolt

public EsPercolateBolt(EsConfig esConfig,
                       EsTupleMapper tupleMapper)

EsPercolateBolt constructor.

Parameters:

esConfig - Elasticsearch configuration containing node addresses and cluster name EsConfig

tupleMapper - Tuple to ES document mapper EsTupleMapper

Method Detail

prepare

public void prepare(Map<String,Object> map,
                    TopologyContext topologyContext,
                    OutputCollector outputCollector)

Description copied from interface: IBolt

Called when a task for this component is initialized within a worker on the cluster. It provides the bolt with the environment in which the bolt executes.

This includes the:

Specified by:

prepare in interface IBolt

Overrides:

prepare in class AbstractEsBolt

Parameters:

map - The Storm configuration for this bolt. This is the configuration provided to the topology merged in with cluster configuration on this machine.

topologyContext - This object can be used to get information about this task’s place within the topology, including the task id and component id of this task, input and output information, etc.

outputCollector - The collector is used to emit tuples from this bolt. Tuples can be emitted at any time, including the prepare and cleanup methods. The collector is thread-safe and should be saved as an instance variable of this bolt object.

process

public void process(Tuple tuple)

Process a single non-tick tuple of input. Implementation needs to handle ack manually. More details on IBolt.execute(Tuple).

Tuple should have relevant fields (source, index, type) for storeMapper to extract ES document.
If there exists non-empty percolate response, EsPercolateBolt will emit tuple with original source and Percolate.Match for each Percolate.Match in PercolateResponse.

Specified by:

process in class BaseTickTupleAwareRichBolt

Parameters:

tuple - The input tuple to be processed.

declareOutputFields

public void declareOutputFields(OutputFieldsDeclarer outputFieldsDeclarer)

Description copied from interface: IComponent

Declare the output schema for all the streams of this topology.

Specified by:

declareOutputFields in interface IComponent

Overrides:

declareOutputFields in class AbstractEsBolt

Parameters:

outputFieldsDeclarer - this is used to declare output stream ids, output fields, and whether or not each output stream is a direct stream