package de.juplo.kafka.wordcount.top10;
-import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.apache.kafka.clients.consumer.ConsumerConfig;
-import org.apache.kafka.common.serialization.Serdes;
import org.apache.kafka.streams.StreamsConfig;
-import org.apache.kafka.streams.state.KeyValueBytesStoreSupplier;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
+import org.springframework.kafka.support.serializer.JsonDeserializer;
+import org.springframework.kafka.support.serializer.JsonSerde;
+import org.springframework.kafka.support.serializer.JsonSerializer;
import java.util.Properties;
import java.util.concurrent.CompletableFuture;
props.put(StreamsConfig.APPLICATION_ID_CONFIG, properties.getApplicationId());
props.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG, properties.getBootstrapServer());
- props.put(StreamsConfig.DEFAULT_KEY_SERDE_CLASS_CONFIG, Serdes.String().getClass().getName());
- props.put(StreamsConfig.DEFAULT_VALUE_SERDE_CLASS_CONFIG, Serdes.String().getClass().getName());
+ props.put(StreamsConfig.DEFAULT_KEY_SERDE_CLASS_CONFIG, JsonSerde.class.getName());
+ props.put(StreamsConfig.DEFAULT_VALUE_SERDE_CLASS_CONFIG, JsonSerde.class.getName());
+ props.put(JsonDeserializer.TRUSTED_PACKAGES, Top10Application.class.getPackageName());
+ props.put(
+ JsonDeserializer.TYPE_MAPPINGS,
+ "word:" + Key.class.getName() + "," +
+ "counter:" + Entry.class.getName());
+ props.put(JsonDeserializer.REMOVE_TYPE_INFO_HEADERS, Boolean.FALSE);
+ props.put(
+ JsonSerializer.TYPE_MAPPINGS,
+ "ranking:" + Ranking.class.getName());
props.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest");
return props;
@Bean(initMethod = "start", destroyMethod = "stop")
public Top10StreamProcessor streamProcessor(
Top10ApplicationProperties applicationProperties,
- ObjectMapper objectMapper,
Properties streamProcessorProperties,
ConfigurableApplicationContext context)
{
Top10StreamProcessor streamProcessor = new Top10StreamProcessor(
applicationProperties.getInputTopic(),
applicationProperties.getOutputTopic(),
- objectMapper,
streamProcessorProperties);
streamProcessor.streams.setUncaughtExceptionHandler((Throwable e) ->