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GRÜN: Erwartungen implementiert
[demos/kafka/training]
/
src
/
main
/
java
/
de
/
juplo
/
kafka
/
SumRecordHandler.java
diff --git
a/src/main/java/de/juplo/kafka/SumRecordHandler.java
b/src/main/java/de/juplo/kafka/SumRecordHandler.java
index
82ada38
..
b0fd27b
100644
(file)
--- a/
src/main/java/de/juplo/kafka/SumRecordHandler.java
+++ b/
src/main/java/de/juplo/kafka/SumRecordHandler.java
@@
-4,17
+4,15
@@
import lombok.extern.slf4j.Slf4j;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import java.util.HashMap;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import java.util.HashMap;
+import java.util.List;
import java.util.Map;
import java.util.Map;
-import java.util.
regex.Pattern
;
+import java.util.
stream.Collectors
;
@Slf4j
public class SumRecordHandler implements RecordHandler<String, String>
{
@Slf4j
public class SumRecordHandler implements RecordHandler<String, String>
{
- final static Pattern PATTERN = Pattern.compile("\\W+");
-
-
- private final Map<Integer, Map<String, Map<String, Long>>> seen = new HashMap<>();
+ private final Map<Integer, SumBusinessLogic> state = new HashMap<>();
@Override
@Override
@@
-22,43
+20,37
@@
public class SumRecordHandler implements RecordHandler<String, String>
{
Integer partition = record.partition();
String user = record.key();
{
Integer partition = record.partition();
String user = record.key();
- Map<String, Map<String, Long>> users = seen.get(partition);
-
- Map<String, Long> words = users.get(user);
- if (words == null)
- {
- words = new HashMap<>();
- users.put(user, words);
- }
-
- for (String word : PATTERN.split(record.value()))
+ String message = record.value();
+ switch (message)
{
{
- Long num = words.get(word);
- if (num == null)
- {
- num = 1l;
- }
- else
- {
- num++;
- }
- words.put(word, num);
+ case "START":
+ state.get(partition).startSum(user);
+ break;
+
+ case "END":
+ Long result = state.get(partition).endSum(user);
+ log.info("New result for {}: {}", user, result);
+ break;
+
+ default:
+ state.get(partition).addToSum(user, Integer.parseInt(message));
+ break;
}
}
}
}
- p
ublic void addPartition(Integer partition, Map<String, Map<String, Long>> statistics
)
+ p
rotected void addPartition(Integer partition, Map<String, Long> state
)
{
{
-
seen.put(partition, statistics
);
+
this.state.put(partition, new SumBusinessLogic(state)
);
}
}
- p
ublic Map<String, Map<String, Long>
> removePartition(Integer partition)
+ p
rotected Map<String, Long
> removePartition(Integer partition)
{
{
- return
seen.remove(partition
);
+ return
this.state.remove(partition).getState(
);
}
}
- public Map<Integer,
Map<String, Map<String, Long>>> getSeen
()
+ public Map<Integer,
SumBusinessLogic> getState
()
{
{
- return s
een
;
+ return s
tate
;
}
}
}
}