package backtype.storm.testing;
import backtype.storm.topology.base.BaseRichBolt;
import backtype.storm.task.OutputCollector;
import backtype.storm.topology.OutputFieldsDeclarer;
import backtype.storm.tuple.Tuple;
import backtype.storm.tuple.Fields;
import java.util.Map;
import backtype.storm.task.TopologyContext;
import java.util.HashMap;
import org.apache.log4j.Logger;
import static backtype.storm.utils.Utils.tuple;
public class TestAggregatesCounter extends BaseRichBolt {
public static Logger LOG = Logger.getLogger(TestWordCounter.class);
Map<String, Integer> _counts;
OutputCollector _collector;
public void prepare(Map stormConf, TopologyContext context, OutputCollector collector) {
_collector = collector;
_counts = new HashMap<String, Integer>();
}
public void execute(Tuple input) {
String word = (String) input.getValues().get(0);
int count = (Integer) input.getValues().get(1);
_counts.put(word, count);
int globalCount = 0;
for(String w: _counts.keySet()) {
globalCount+=_counts.get(w);
}
_collector.emit(tuple(globalCount));
_collector.ack(input);
}
public void cleanup() {
}
public void declareOutputFields(OutputFieldsDeclarer declarer) {
declarer.declare(new Fields("agg-global"));
}
}