Code an die Version aus 'sumup-adder--springified' angepasst

[demos/kafka/training] / src / main / java / de / juplo / kafka / ApplicationRecordHandler.java

diff --git a/src/main/java/de/juplo/kafka/ApplicationRecordHandler.java b/src/main/java/de/juplo/kafka/ApplicationRecordHandler.java
index 596f3da..2829157 100644 (file)
--- a/src/main/java/de/juplo/kafka/ApplicationRecordHandler.java
+++ b/src/main/java/de/juplo/kafka/ApplicationRecordHandler.java
@@ -4,35 +4,70 @@ import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.kafka.clients.consumer.ConsumerRecord;
 
+import java.time.Duration;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Optional;
 
 
 @RequiredArgsConstructor
 @Slf4j
-public class ApplicationRecordHandler implements RecordHandler<String, String>
+public class ApplicationRecordHandler implements RecordHandler<String, Message>
 {
   private final AdderResults results;
+  private final Optional<Duration> throttle;
+  private final String id;
 
   private final Map<Integer, AdderBusinessLogic> state = new HashMap<>();
 
 
+  public void addNumber(
+      Integer partition,
+      String user,
+      MessageAddNumber message)
+  {
+    state.get(partition).addToSum(user, message.getNext());
+  }
+
+  public void calculateSum(
+      Integer partition,
+      String user,
+      MessageCalculateSum message)
+  {
+    AdderResult result = state.get(partition).calculate(user);
+    log.info("{} - New result for {}: {}", id, user, result);
+    results.addResults(partition, user, result);
+  }
+
   @Override
-  public void accept(ConsumerRecord<String, String> record)
+  public void accept(ConsumerRecord<String, Message> record)
   {
     Integer partition = record.partition();
     String user = record.key();
-    String message = record.value();
+    Message message = record.value();
 
-    if (message.equals("CALCULATE"))
+    switch(message.getType())
     {
-      AdderResult result = state.get(partition).calculate(user);
-      log.info("New result for {}: {}", user, result);
-      results.addResults(partition, user, result);
-      return;
+      case ADD:
+        addNumber(partition, user, (MessageAddNumber) message);
+        break;
+
+      case CALC:
+        calculateSum(partition, user, (MessageCalculateSum) message);
+        break;
     }
 
-    state.get(partition).addToSum(user, Integer.parseInt(message));
+    if (throttle.isPresent())
+    {
+      try
+      {
+        Thread.sleep(throttle.get().toMillis());
+      }
+      catch (InterruptedException e)
+      {
+        log.warn("{} - Intrerrupted while throttling: {}", id, e);
+      }
+    }
   }
 
   protected void addPartition(Integer partition, Map<String, AdderResult> state)