package com.xavient.dip.storm.bolt;
import java.util.Arrays;
import java.util.Map;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.xavient.dip.common.utils.FlatJsonConverter;
import com.xavient.dip.storm.utils.TupleHelpers;
import backtype.storm.task.OutputCollector;
import backtype.storm.task.TopologyContext;
import backtype.storm.topology.OutputFieldsDeclarer;
import backtype.storm.topology.base.BaseRichBolt;
import backtype.storm.tuple.Fields;
import backtype.storm.tuple.Tuple;
import backtype.storm.tuple.Values;
public class TwitterRawJsonConvertorBolt extends BaseRichBolt {
private static final long serialVersionUID = 5844968075509153406L;
private static final Logger LOGGER = LoggerFactory.getLogger(TwitterRawJsonConvertorBolt.class);
private OutputCollector collector;
@SuppressWarnings("rawtypes")
@Override
public void prepare(Map stormConf, TopologyContext context, OutputCollector collector) {
this.collector = collector;
}
@Override
public void execute(Tuple tuple) {
if (!TupleHelpers.isTickTuple(tuple)) {
try {
Object[] data=FlatJsonConverter.convertToValuesArray(tuple.getString(0));
collector.emit(new Values(Arrays.copyOfRange(data, 1, data.length)));
} catch (Exception e) {
LOGGER.error("Exception occurred while converting raw json to status", e);
} finally{
collector.ack(tuple);
}
}else{
collector.ack(tuple);
}
}
@Override
public void declareOutputFields(OutputFieldsDeclarer declarer) {
declarer.declare(new Fields("id", "text", "source", "reTweeted", "username", "createdAt", "retweetCount",
"userLocation", "inReplyToUserId", "inReplyToStatusId", "userScreenName", "userDescription",
"userFriendsCount", "userStatusesCount", "userFollowersCount"));
}
}