+ return new HostInfo(host, port);
+ }
+
+ @Bean
+ public Properties streamProcessorProperties(
+ QueryApplicationProperties applicationProperties,
+ HostInfo applicationServer)
+ {
+ Properties props = new Properties();
+
+ props.putAll(serializationConfig());
+
+ String applicationId = applicationProperties.getApplicationId();
+ String bootstrapServer = applicationProperties.getBootstrapServer();
+
+ props.put(StreamsConfig.APPLICATION_ID_CONFIG, applicationId);
+ props.put(StreamsConfig.APPLICATION_SERVER_CONFIG, applicationServer.host() + ":" + applicationServer.port());
+ props.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServer);
+ props.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest");
+
+ return props;
+ }
+
+ static Properties serializationConfig()
+ {
+ Properties props = new Properties();
+
+ props.put(StreamsConfig.DEFAULT_KEY_SERDE_CLASS_CONFIG, Serdes.String().getClass().getName());
+ props.put(StreamsConfig.DEFAULT_VALUE_SERDE_CLASS_CONFIG, JsonSerde.class.getName());
+ props.put(
+ JsonDeserializer.TYPE_MAPPINGS,
+ "user:" + Key.class.getName() + "," +
+ "ranking:" + Ranking.class.getName() + "," +
+ "userdata:" + User.class.getName() + "," +
+ "userranking:" + UserRanking.class.getName());
+
+ return props;
+ }
+
+ @Bean(initMethod = "start", destroyMethod = "stop")
+ public QueryStreamProcessor streamProcessor(
+ Properties streamProcessorProperties,
+ HostInfo applicationServer,
+ QueryApplicationProperties applicationProperties,
+ KeyValueBytesStoreSupplier userStoreSupplier,
+ KeyValueBytesStoreSupplier rankingStoreSupplier,
+ ConfigurableApplicationContext context)
+ {
+ QueryStreamProcessor streamProcessor = new QueryStreamProcessor(
+ streamProcessorProperties,
+ applicationServer,
+ applicationProperties.getUsersInputTopic(),
+ applicationProperties.getRankingInputTopic(),
+ userStoreSupplier,
+ rankingStoreSupplier);
+
+ streamProcessor.streams.setUncaughtExceptionHandler((Throwable e) ->
+ {
+ log.error("Unexpected error!", e);
+ CompletableFuture.runAsync(() ->
+ {
+ log.info("Stopping application...");
+ SpringApplication.exit(context, () -> 1);
+ });
+ return SHUTDOWN_CLIENT;
+ });
+
+ return streamProcessor;
+ }
+
+ @Bean
+ public KeyValueBytesStoreSupplier userStoreSupplier()
+ {
+ return Stores.persistentKeyValueStore(USER_STORE_NAME);
+ }
+
+ @Bean
+ public KeyValueBytesStoreSupplier rankingStoreSupplier()
+ {
+ return Stores.persistentKeyValueStore(RANKING_STORE_NAME);