Langohr is a Clojure RabbitMQ client that embraces AMQP 0.9.1 Model.

• Embrace AMQP 0.9.1 Model. Follow Java client's API conventions instead of inventing new overly opinionated ones
• Be well documented. Use Ruby amqp gem guides as a foundation.
• Be well tested.
• Error handling and recovery should be well covered
• Support all of the RabbitMQ features, include extensions to AMQP 0.9.1.
• Make error handling and recovery easier

We've learned a lot from over 6 years history of the Ruby amqp gem, Bunny, and RabbitMQ Java client development and try to apply this experience to Langohr design.

Here is what Langohr does not try to be:

• A replacement for the RabbitMQ Java client
• Sugar-coated API for task queues that hides all the protocol machinery from the developer
• A port of Bunny to Clojure

Langohr artifacts are released to Clojars. If you are using Maven, add the following repository definition to your pom.xml:

<repository>
  <id>clojars.org</id>
  <url>http://clojars.org/repo</url>
</repository>

With Leiningen:

[com.novemberain/langohr "3.4.1"]

With Maven:

<dependency>
  <groupId>com.novemberain</groupId>
  <artifactId>langohr</artifactId>
  <version>3.4.1</version>
</dependency>

If you are only starting out, please see our Getting Started guide.

Documentation guides:

• AMQP 0.9.1 Concepts
• Connecting To The Broker
• Queues and Consumers
• Exchanges and Publishing
• Bindings
• Durability
• TLS/SSL

For existing users, there is API reference.

Several code examples used in the guides are kept in a separate Git repository.

Our test suite also can be used for code examples.

Langohr requires Clojure 1.6+. The most recent stable release is highly recommended.

Langohr depends on RabbitMQ Java client 3.4.x and requires RabbitMQ versions 3.3 and later.

Langohr has been around since 2011. The API is stable.

Langohr has a mailing list. Feel free to join it and ask any questions you may have.

To subscribe for announcements of releases, important changes and so on, please follow @ClojureWerkz on Twitter.

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

• Elastisch
• Cassaforte
• Monger
• Welle
• Neocons
• Quartzite
• Titanium

Langohr uses Leiningen 2. Make sure you have it installed and then run tests against all supported Clojure versions using

lein all test

Then create a branch and make your changes on it. Once you are done with your changes and all tests pass, submit a pull request on Github.

Copyright (C) 2011-2015 Michael S. Klishin and the ClojureWerkz Team.

Double licensed under the Eclipse Public License (the same as Clojure) or the Apache Public License 2.0.