1 package de.juplo.kafka;
3 import lombok.extern.slf4j.Slf4j;
4 import org.apache.kafka.clients.consumer.ConsumerRecord;
6 import java.util.HashMap;
9 import java.util.stream.Collectors;
13 public class SumRecordHandler implements RecordHandler<String, String>
15 private final Map<Integer, SumBusinessLogic> state = new HashMap<>();
19 public void accept(ConsumerRecord<String, String> record)
21 Integer partition = record.partition();
22 String user = record.key();
23 String message = record.value();
27 state.get(partition).startSum(user);
31 Long result = state.get(partition).endSum(user);
32 log.info("New result for {}: {}", user, result);
36 state.get(partition).addToSum(user, Integer.parseInt(message));
41 protected void addPartition(Integer partition, Map<String, Long> state)
43 this.state.put(partition, new SumBusinessLogic(state));
46 protected Map<String, Long> removePartition(Integer partition)
48 return this.state.remove(partition).getState();
52 public Map<Integer, SumBusinessLogic> getState()