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ktable join

Pragya Keshap answered on February 28, 2023 Popularity 3/10 Helpfulness 1/10

answer ktable join

ktable join

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public class KTableJoinDemo {
    private static final Logger logger = LogManager.getLogger();

    public static void main(String[] args) {
        Properties props = new Properties();
        props.put(StreamsConfig.APPLICATION_ID_CONFIG, AppConfigs.applicationID);
        props.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG, AppConfigs.bootstrapServers);
        props.put(StreamsConfig.STATE_DIR_CONFIG, AppConfigs.stateStoreName);
        props.put(StreamsConfig.COMMIT_INTERVAL_MS_CONFIG, 0);

        StreamsBuilder streamsBuilder = new StreamsBuilder();
        KTable<String, UserDetails> KT0 = streamsBuilder.table(AppConfigs.userMasterTopic,
            Consumed.with(AppSerdes.String(), AppSerdes.UserDetails())
        );

        KTable<String, UserLogin> KT1 = streamsBuilder.table(AppConfigs.lastLoginTopic,
            Consumed.with(AppSerdes.String(), AppSerdes.UserLogin())
        );

        KT0.join(KT1, (v1, v2) -> {
            v1.setLastLogin(v2.getCreatedTime());
            return v1;
        }).toStream().print(Printed.toSysOut());

        logger.info("Starting Stream...");
        KafkaStreams streams = new KafkaStreams(streamsBuilder.build(), props);
        streams.start();

        Runtime.getRuntime().addShutdownHook(new Thread(() -> {
            logger.info("Stopping Streams...");
            streams.close();
        }));

    }
}

Popularity 3/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: java join ktable

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Contributed on Feb 28 2023

Pragya Keshap

0 Answers Avg Quality 2/10

ktable join

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