Book Image

Elasticsearch 5.x Cookbook - Third Edition

By : Alberto Paro
Book Image

Elasticsearch 5.x Cookbook - Third Edition

By: Alberto Paro

Overview of this book

Elasticsearch is a Lucene-based distributed search server that allows users to index and search unstructured content with petabytes of data. This book is your one-stop guide to master the complete Elasticsearch ecosystem. We’ll guide you through comprehensive recipes on what’s new in Elasticsearch 5.x, showing you how to create complex queries and analytics, and perform index mapping, aggregation, and scripting. Further on, you will explore the modules of Cluster and Node monitoring and see ways to back up and restore a snapshot of an index. You will understand how to install Kibana to monitor a cluster and also to extend Kibana for plugins. Finally, you will also see how you can integrate your Java, Scala, Python, and Big Data applications such as Apache Spark and Pig with Elasticsearch, and add enhanced functionalities with custom plugins. By the end of this book, you will have an in-depth knowledge of the implementation of the Elasticsearch architecture and will be able to manage data efficiently and effectively with Elasticsearch.
Table of Contents (25 chapters)
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Dedication
Preface

Creating a plugin


Native plugins allow several aspects of the Elasticsearch server to be extended, but they require a good knowledge of Java.

In this recipe we will see how to set up a working environment to develop native plugins.

Getting ready

You need an up-and-running Elasticsearch installation as we described in the Downloading and installing Elasticsearch recipe in Chapter 2, Downloading and Setup.

A Maven tool, or an IDE that supports Java programming, such as Eclipse or IntelliJ IDEA, is required.

The code to this recipe is available in the chapter17/simple_plugin directory.

How to do it...

Generally, Elasticsearch plugins are developed in Java using the Maven build tool and deployed as a ZIP file.

To create a simple JAR plugin, we will perform the following steps:

  1. To correctly build and serve a plugin, some files must be defined:

    • pom.xml is used to define the build configuration for Maven.

    • es-plugin.properties defines the namespace of the plugin class that must be loaded.

    • <name>plugin...