private void start(String topic) {
consumer = Consumer.createJavaConsumerConnector(config);
/* We tell Kafka how many threads will read each topic. We have one topic and one thread */
Map<String, Integer> topicCountMap = new HashMap<String, Integer>();
topicCountMap.put(topic, new Integer(1));
/* We will use a decoder to get Kafka to convert messages to Strings
* valid property will be deserializer.encoding with the charset to use.
* default is UTF8 which works for us */
StringDecoder decoder = new StringDecoder(new VerifiableProperties());
/* Kafka will give us a list of streams of messages for each topic.
In this case, its just one topic with a list of a single stream */
stream = consumer.createMessageStreams(topicCountMap, decoder, decoder).get(topic).get(0);
}
