TL;DR

Elastisch is a battle tested, small but feature rich and well documented Clojure client for ElasticSearch. It supports virtually every Elastic Search feature and has solid documentation.

2.0.0-beta1 is a preview release of Elastisch 2.0, which focuses on ElasticSearch 1.0 compatibility.

Changes between Elastisch 1.4.0 and 2.0.0

ElasticSearch 1.0 Compatibility

Main goal of Elastisch 2.0 is ElasticSearch 2.0 compatibility. This includes minor API changes (in line with ElasticSearch 1.0 API and terminology changes) and moderate internal modifications.

Support for cluster nodes stats and info REST APIs

clojureworkz.elastisch.rest.admin/nodes-info and clojureworkz.elastisch.rest.admin/nodes-stats are new administrative functions that provide access to ElasticSearch cluster stats and node info.

Examples:

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(require '[clojurewerkz.elastisch.rest.admin :as admin])

(admin/nodes-stats)
(admin/nodes-stats :nodes "_all")
(admin/nodes-stats :nodes ["node1" "node2"] ["indices" "os" "plugins"])

(admin/nodes-info)
(admin/nodes-info :nodes "_all")
(admin/nodes-info :nodes ["node1" "node2"] ["indices" "os" "plugins"])

See ElasticSearch nodes stats documentation, nodes info page, and node specification page for more info.

Contributed by Joachim De Beule.

Support for _cluster/state REST API

Added (clojureworkz.elastisch.rest.admin/cluster-state & {:as params})

Examples:

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(require '[clojurewerkz.elastisch.rest.admin :as admin])

(admin/cluster-state)
(admin/cluster-state :filter_nodes true)

See ElasticSearch documentation for more info.

Contributed by Joachim De Beule.

Support for _cluster/health REST API

Added (clojureworkz.elastisch.rest.admin/cluster-health & {:as params})

Example:

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(require '[clojurewerkz.elastisch.rest.admin :as admin])

(admin/cluster-health)
(admin/cluster-health :index "index1")
(admin/cluster-health :index ["index1","index2"])
(admin/cluster-health :index "index1" :pretty true :level "indices")

See ElasticSearch documentation for more info.

Contributed by Joachim De Beule.

Support for analyze in REST API client

Added (doc/analyze text & {:as params})

See ElasticSearch documentation for more info.

Examples:

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(require '[clojurewerkz.elastisch.rest.document :as doc])

(doc/analyze "foo bar baz")
(doc/analyze "foo bar baz" :index "some-index-name")
(doc/analyze "foo bar baz" :analyzer "whitespace")
(doc/analyze "foo bar baz" :tokenizer "keyword" :filters "lowercase")
(doc/analyze "foo bar baz" :index "some-index-name" :field "some-field-name")

Contributed by Joachim De Beule

Query String Escaping

clojurewerkz.elastisch.query/query-string accepts a new option, :escape-with, which is a function that performs escaping of special characters in query string queries.

By default clojurewerkz.elastisch.escape/escape-query-string-characters is used.

Contributed by Ben Reinhart (Groupon).

ElasticSearch Native Client Upgrade

Elastisch now depends on ElasticSearch native client version 1.0.1.

clj-http Update

clj-http dependency has been upgraded to version 0.9.0.

Full Change Log

Elastisch change log is available on GitHub.

Thank You, Contributors

Kudos to Richie Vos for contributing to this release.

Elastisch is a ClojureWerkz Project

Elastisch is part of the group of libraries known as ClojureWerkz, together with

• Langohr, a Clojure client for RabbitMQ that embraces the AMQP 0.9.1 model
• Monger, a Clojure MongoDB client for a more civilized age
• Cassaforte, a Clojure Cassandra client
• Titanium, a Clojure graph library
• Neocons, a client for the Neo4J REST API
• Welle, a Riak client with batteries included
• Quartzite, a powerful scheduling library

and several others. If you like Elastisch, you may also like our other projects.

Let us know what you think on Twitter or on the Clojure mailing list.

About the Author

Michael on behalf of the ClojureWerkz Team