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Mastering Elasticsearch 5.x

You're reading from   Mastering Elasticsearch 5.x Master the intricacies of Elasticsearch 5 and use it to create flexible and scalable search solutions

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Product type Paperback
Published in Feb 2017
Publisher Packt
ISBN-13 9781786460189
Length 428 pages
Edition 3rd Edition
Languages
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Author (1):
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Bharvi Dixit Bharvi Dixit
Author Profile Icon Bharvi Dixit
Bharvi Dixit
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Toc

Table of Contents (13) Chapters Close

Preface 1. Revisiting Elasticsearch and the Changes 2. The Improved Query DSL FREE CHAPTER 3. Beyond Full Text Search 4. Data Modeling and Analytics 5. Improving the User Search Experience 6. The Index Distribution Architecture 7. Low-Level Index Control 8. Elasticsearch Administration 9. Data Transformation and Federated Search 10. Improving Performance 11. Developing Elasticsearch Plugins 12. Introducing Elastic Stack 5.0

Creating a custom REST action

Let's start the journey of extending Elasticsearch by creating a custom REST action. We've chosen this as the first extension, because we wanted to take the simplest approach as the introduction to extending Elasticsearch.

Note

We assume that you already have a Java project created and that you are using Maven, just like we did in the Creating the Apache Maven project structure section at the beginning of this chapter. If you would like to use an already created and working example and start from there, please look at the code for Chapter 11, Developing Elasticsearch Plugins that is available with the book.

The assumptions

In order to illustrate how to develop a custom REST action, we need to have an idea of how it should work. Our REST action will be really simple - it should return names of all the nodes or names of the nodes that start with the given prefix if the prefix parameter is passed to it. In addition to that, it should only be available when...

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