Class EsPercolateBolt

All Implemented Interfaces:
Serializable, IBolt, IComponent, IRichBolt

public class EsPercolateBolt extends AbstractEsBolt
Basic bolt for retrieve matched percolate queries.
See Also:
  • Constructor Details

    • EsPercolateBolt

      public EsPercolateBolt(EsConfig esConfig)
      EsPercolateBolt constructor.
      esConfig - Elasticsearch configuration containing node addresses EsConfig
    • EsPercolateBolt

      public EsPercolateBolt(EsConfig esConfig, EsTupleMapper tupleMapper)
      EsPercolateBolt constructor.
      esConfig - Elasticsearch configuration containing node addresses and cluster name EsConfig
      tupleMapper - Tuple to ES document mapper EsTupleMapper
  • 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:

      Specified by:
      prepare in interface IBolt
      prepare in class AbstractEsBolt
      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
      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
      declareOutputFields in class AbstractEsBolt
      outputFieldsDeclarer - this is used to declare output stream ids, output fields, and whether or not each output stream is a direct stream