September 2017
Beginner to intermediate
360 pages
8h 13m
English
book
Practical Real-time Data Processing and Analytics
by Shilpi Saxena, Selva raj Ramasamy, Prateek Bhati, Saurabh Gupta
Content preview from Practical Real-time Data Processing and Analytics
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Elasticsearch Bolt
This bolt is a persistence bolt. real-time sensor data or generated alerts are persisted into Elasticsearch for further analysis in Kibana:
package com.book.processing;import java.net.InetSocketAddress;import java.util.Date;import java.util.HashMap;import java.util.Map;import org.apache.storm.task.TopologyContext;import org.apache.storm.topology.BasicOutputCollector;import org.apache.storm.topology.OutputFieldsDeclarer;import org.apache.storm.topology.base.BaseBasicBolt;import org.apache.storm.tuple.Tuple;import org.elasticsearch.action.index.IndexResponse;import org.elasticsearch.client.Client;import org.elasticsearch.common.settings.Settings;import org.elasticsearch.common.transport.InetSocketTransportAddress;import org.elasticsearch.transport.client.PreBuiltTransportClient; ...
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