This repository contains Ruby integrations for Elasticsearch:

• a client for connecting to an Elasticsearch cluster,
• a Ruby API for the Elasticsearch's REST API,
• a Ruby API for the X-Pack APIs,
• various extensions and utilities.

For integration with Ruby models and Rails applications, see the elasticsearch-rails project.

The Elasticsearch client is compatible with Ruby 1.9 and higher. Other libraries in this repository might require a more recent Ruby version.

The client's API is compatible with Elasticsearch's API versions from 0.90 till current, just use a release matching major version of Elasticsearch.

Install the elasticsearch package from Rubygems:

gem install elasticsearch 

To use an unreleased version, either add it to your Gemfile for Bundler:

gem 'elasticsearch', git: 'git://github.com/elasticsearch/elasticsearch-ruby.git' 

or install it from a source code checkout:

git clone https://github.com/elasticsearch/elasticsearch-ruby.git cd elasticsearch-ruby/elasticsearch bundle install rake install 

The elasticsearch library is a wrapper for two separate libraries:

• elasticsearch-transport, which provides a low-level Ruby client for connecting to an Elasticsearch cluster
• elasticsearch-api, which provides a Ruby API for the Elasticsearch RESTful API

require 'elasticsearch' client = Elasticsearch::Client.new log: true client.transport.reload_connections! client.cluster.health client.search q: 'test' # etc.

Both of these libraries are extensively documented. Please read the elasticsearch-transport and the elasticsearch-api documentation carefully.

Keep in mind, that for optimal performance, you should use a HTTP library which supports persistent ("keep-alive") connections, e.g. Patron or Typhoeus.

This repository contains these additional Ruby libraries:

• elasticsearch-extensions, which provides a set of extensions to the base library,
• elasticsearch-dsl, which provides a Ruby API for the Elasticsearch Query DSL,
• elasticsearch-xpack, which provides Ruby API for the X-Pack APIs.

Please see their respective READMEs for information and documentation.

To work on the code, clone and bootstrap the project first:

git clone https://github.com/elasticsearch/elasticsearch-ruby.git cd elasticsearch-ruby/ rake setup rake bundle 

This will clone the Elasticsearch repository into the project, and run bundle install in all subprojects.

To run tests, you need to start a testing cluster on port 9250, or provide a different one in the TEST_CLUSTER_PORT environment variable.

There's a Rake task to start the testing cluster:

rake test:cluster:start 

You can configure the port, path to the startup script, number of nodes, and other settings with environment variables:

TEST_CLUSTER_COMMAND=./tmp/builds/elasticsearch-2.0.0-SNAPSHOT/bin/elasticsearch \ TEST_CLUSTER_PORT=9250 \ TEST_CLUSTER_NODES=2 \ TEST_CLUSTER_NAME=my_cluster \ TEST_CLUSTER_PARAMS='-Xms500m -Xmx500m -D es.index.store.type=niofs' \ TEST_CLUSTER_TIMEOUT=120 \ rake test:cluster:start 

To run tests against unreleased Elasticsearch versions, you can use the rake elasticsearch:build Rake task to build Elasticsearch from the cloned source (use rake elasticsearch:update to update the repository):

Note: If you have gems from the elasticsearch family installed system-wide, and want to use development ones, prepend the command with bundle exec.

rake elasticsearch:build 

You can pass a branch name (tag, commit, ...) as the Rake task variable:

rake elasticsearch:build[origin/1.x] 

To run all the tests in all the subprojects, use the Rake task:

time rake test:all 

This software is licensed under the Apache 2 license, quoted below.

Copyright (c) 2013 Elasticsearch <http://www.elasticsearch.org> Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.