# kafka-rb
kafka-rb allows you to produce messages to the Kafka distributed publish/subscribe messaging service.

## Requirements
You need to have access to your Kafka instance and be able to connect through TCP. You can obtain a copy and instructions on how to setup kafka at https://github.com/kafka-dev/kafka

## Installation
sudo gem install kafka-rb

(the code works fine with JRuby, Ruby 1.8x and Ruby 1.9.x)

## Usage

### Sending a simple message

    require 'kafka'
    producer = Kafka::Producer.new
    message = Kafka::Message.new("some random message content")
    producer.send(message)

### Sending a sequence of messages

    require 'kafka'
    producer = Kafka::Producer.new
    message1 = Kafka::Message.new("some random message content")
    message2 = Kafka::Message.new("some more content")
    producer.send([message1, message2])

### Batching a bunch of messages using the block syntax

    require 'kafka'
    producer = Kafka::Producer.new
    producer.batch do |messages|
        puts "Batching a send of multiple messages.."
        messages << Kafka::Message.new("first message to send")
        messages << Kafka::Message.new("second message to send")
    end

* they will be sent all at once, after the block execution

### Consuming messages one by one

    require 'kafka'
    consumer = Kafka::Consumer.new
    messages = consumer.consume


### Consuming messages using a block loop

    require 'kafka'
    consumer = Kafka::Consumer.new
    consumer.loop do |messages|
        puts "Received"
        puts messages
    end


Contact for questions

alejandrocrosa at(@) gmail.com

http://twitter.com/alejandrocrosa