Class AbstractEsBolt

All Implemented Interfaces:
Serializable, IBolt, IComponent, IRichBolt
Direct Known Subclasses:
EsIndexBolt, EsLookupBolt, EsPercolateBolt

public abstract class AbstractEsBolt extends BaseTickTupleAwareRichBolt
See Also:
  • Field Details

    • client

      protected static org.elasticsearch.client.RestClient client
    • objectMapper

      protected static final com.fasterxml.jackson.databind.ObjectMapper objectMapper
    • collector

      protected OutputCollector collector
  • Constructor Details

    • AbstractEsBolt

      public AbstractEsBolt(EsConfig esConfig)
  • 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:

      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

      public void declareOutputFields(OutputFieldsDeclarer outputFieldsDeclarer)
      Description copied from interface: IComponent
      Declare the output schema for all the streams of this topology.
      outputFieldsDeclarer - this is used to declare output stream ids, output fields, and whether or not each output stream is a direct stream