play2-elasticsearch-jest

===================

This module provides an easy Elasticsearch integration in a Playframework 2 application

This module relies on Jest integration to allow querying of ElasticSearch index over HTTP through its REST api. It is heavily based on play2-elasticsearch from clever-age (thanks for the work !).

While classes can look similar to the one in the original plugin, a lot of method signatures have changed due to the use of another querying library. So it is not a simple drop-in replacement !

Warning This plugin needs to be considered as an alpha and should not be used in production without an extensive testing phase !

Reason for this

We needed a way to use ElasticSearch on different machines / network than the one we are running our applications on. So the only way of doing this "securely" is to use REST with authentication which is handled by Jest library.

Major changes

Almost every operation returns a JestRichResult which provides a way to encapsulate common operations (such as getId(), getHits()...). JestRichResult features a safe delegate to JestResult allowing to manipulate this object as if it were a JestResult.

As the library now uses HTTP transport, expect it to be slower than its counterpart using the Transport protocol, however, it should be more robust when it comes to ElasticSearch version support (as the REST api is more stable than binary compatibilty).

Everything has been relocated to the base package com.codetroopers.play.elasticsearch

Versions

0.1.1 [2014-03-18] : Added result field in JestRichResult#Result

0.1.0 [2014-03-18] : Initial release

Install

The dependency declaration is :

"com.code-troopers.play" %% "play2-elasticsearch-jest" % "0.1.1"

Releases are published on maven-central, so you don't have to define any specific resolvers.

Activate the plugin

The Play2-elasticsearch module requires its plugin class to be declared in the conf/play.plugins file. If this file doesn't exist (it's not created by default when you create a new project), just create it in the conf directory first, and then add

9000:com.codetroopers.play.elasticsearch.plugin.IndexPlugin

Configuration

You can configure the module in conf/application.conf (or in any configuration file included in your application.conf)

## ElasticSearch Configuration
##############################
## define local mode or not
elasticsearch.local=false

## Coma-separated list of clients
elasticsearch.client="192.168.0.46:9200"
# ex : elasticsearch.client="192.168.0.46:9200,http://me:[email protected]:9200"

## Name of the index
elasticsearch.index.name="play2-elasticsearch"

## Custom settings to apply when creating the index (optional)
elasticsearch.index.settings="{ analysis: { analyzer: { my_analyzer: { type: \"custom\", tokenizer: \"standard\" } } } }"

## define package or class separate by commas for loading @IndexType and @IndexMapping information
elasticsearch.index.clazzs="indexing.*"

## show request & result json of search request in log (it will be logged using Logger.debug())
elasticsearch.index.show_request=true

Usage

There is two ways of using this plugin :

• call IndexQuery.* or IndexService.* methods
• create your own Jest Action through the correct Builder (for example : new DeleteByQuery.Builder()) and then call JestClientWrapper.execute(yourAction)

What needs to be done

• A lot of improvements in the API can be done (needs to find out whether Jest*RequestBuilder are useful or not)
• Add better return types (JestRichResult is incomplete)
• Percolate API is missing in IndexService (accessible via Jest Builder)
• A lot of tests are missing

Authors

http://twitter.com/Cedric_Gatay

Original work from http://twitter.com/nboire & http://twitter.com/mguillermin

License

This code is released under the MIT License