Class AbstractEsBolt
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
- All Implemented Interfaces:
Serializable
,IBolt
,IComponent
,IRichBolt
- Direct Known Subclasses:
EsIndexBolt
,EsLookupBolt
,EsPercolateBolt
- See Also:
-
Field Summary
Modifier and TypeFieldDescriptionprotected static org.elasticsearch.client.RestClient
protected OutputCollector
protected static final com.fasterxml.jackson.databind.ObjectMapper
-
Constructor Summary
-
Method Summary
Modifier and TypeMethodDescriptionvoid
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.Methods inherited from class org.apache.storm.topology.base.BaseTickTupleAwareRichBolt
execute, onTickTuple, process
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 Details
-
client
protected static org.elasticsearch.client.RestClient client -
objectMapper
protected static final com.fasterxml.jackson.databind.ObjectMapper objectMapper -
collector
-
-
Constructor Details
-
AbstractEsBolt
-
-
Method Details
-
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:
- 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.
-
declareOutputFields
Description copied from interface:IComponent
Declare the output schema for all the streams of this topology.- Parameters:
outputFieldsDeclarer
- this is used to declare output stream ids, output fields, and whether or not each output stream is a direct stream
-