@Override
public void onStop() {
if (conn != null) {
conn.close();
conn = null;
producer.close();
consumer.close();
}
}
public void init(String kafkaServers, String dbServers, boolean restart) throws Exception {
logger.info("connecting to cassandra");
conn = new CassandraConn();
conn.connect(dbServers);
logger.info("create TweetDao");
tweetDao = new TweetDao(conn);
segDao = new SegStateDao(conn);
logger.info("connecting to kafka");
consumer = new TweetConsumer();
consumer.open(
Arrays.asList(KafkaTopics.RETWEET_TOPIC),
KafkaTopics.RTSERIES_GROUP,
kafkaServers,
restart);
producer = new TweetKafkaProducer(KafkaProducerFactory.createProducer(kafkaServers));
MetricBasedPerfProfile.registerServer(controller);
}
