refactor: `RestProducer` wird explizit erzeugt

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

diff --git a/src/main/java/de/juplo/kafka/ApplicationConfiguration.java b/src/main/java/de/juplo/kafka/ApplicationConfiguration.java
new file mode 100644 (file)
index 0000000..0642aa4
--- /dev/null
+++ b/src/main/java/de/juplo/kafka/ApplicationConfiguration.java
@@ -0,0 +1,46 @@
+package de.juplo.kafka;
+
+import org.apache.kafka.clients.producer.KafkaProducer;
+import org.apache.kafka.common.serialization.StringSerializer;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import java.util.Properties;
+
+
+@Configuration
+@EnableConfigurationProperties(ApplicationProperties.class)
+public class ApplicationConfiguration
+{
+  @Bean
+  public RestProducer restProducer(
+      ApplicationProperties properties,
+      KafkaProducer<String, String> kafkaProducer)
+  {
+    return
+        new RestProducer(
+            properties.getClientId(),
+            properties.getTopic(),
+            properties.getPartition(),
+            kafkaProducer);
+  }
+
+  @Bean(destroyMethod = "close")
+  public KafkaProducer<String, String> kafkaProducer(ApplicationProperties properties)
+  {
+    Properties props = new Properties();
+    props.put("bootstrap.servers", properties.getBootstrapServer());
+    props.put("client.id", properties.getClientId());
+    props.put("acks", properties.getAcks());
+    props.put("batch.size", properties.getBatchSize());
+    props.put("delivery.timeout.ms", 20000); // 20 Sekunden
+    props.put("request.timeout.ms",  10000); // 10 Sekunden
+    props.put("linger.ms", properties.getLingerMs());
+    props.put("compression.type", properties.getCompressionType());
+    props.put("key.serializer", StringSerializer.class.getName());
+    props.put("value.serializer", StringSerializer.class.getName());
+
+    return new KafkaProducer<>(props);
+  }
+}