# Apache Kafka #

See our [web site](http://kafka.apache.org) for details on the project.

## Building it ##
1. ./sbt update
2. ./sbt package
3. ./sbt assembly-package-dependency

To build for a particular version of Scala (either 2.8.0, 2.8.2, 2.9.1, 2.9.2 or 2.10.1), change step 2 above to: 
2. ./sbt "++2.8.0 package"

To build for all supported versions of Scala, change step 2 above to: 
2. ./sbt +package

## Running it ##
Follow instuctions in http://kafka.apache.org/documentation.html#quickstart

## Running unit tests ##
  ./sbt test

## Building a binary release zip or gzipped tar ball ##
  ./sbt release-zip
  ./sbt release-tar 
The release file can be found inside ./target/RELEASE/.

## Other Build Tips ##
Here are some useful sbt commands, to be executed at the sbt command prompt (./sbt). Prefixing with "++<version> " runs the
command for a specific Scala version, prefixing with "+" will perform the action for all versions of Scala, and no prefix
runs the command for the default (2.8.0) version of Scala. -

tasks : Lists all the sbt commands and their descriptions
clean : Deletes all generated files (the target directory).
compile : Compile all the sub projects, but not create the jars
test : Run all unit tests in all sub projects
release-zip : Create all the jars, run unit tests and create a deployable release zip
release-tar : Create all the jars, run unit tests and create a deployable release gzipped tar tall
package: Creates jars for src, test, docs etc
projects : List all the sub projects 
project sub_project_name : Switch to a particular sub-project. For example, to switch to the core kafka code, use "project core-kafka"

The following commands can be run only on a particular sub project -
test-only package.test.TestName : Runs only the specified test in the current sub project
run : Provides options to run any of the classes that have a main method. For example, you can switch to project java-examples, and run the examples there by executing "project java-examples" followed by "run" 

For more details please see the [SBT documentation](https://github.com/harrah/xsbt/wiki)

## Contribution ##

Kafka is a new project, and we are interested in building the community; we would welcome any thoughts or [patches](https://issues.apache.org/jira/browse/KAFKA). You can reach us [on the Apache mailing lists](http://kafka.apache.org/contact.html).

To contribute follow the instructions here:
 * http://kafka.apache.org/contributing.html

We also welcome patches for the website and documentation which can be found here:
 * https://svn.apache.org/repos/asf/kafka/site