Examples with StringDeserializer org.apache.kafka.common.serialization.StringDeserializer used on opensource projects

Example 56 with StringDeserializer

use of org.apache.kafka.common.serialization.StringDeserializer in project kafka by apache.

the class EosTestDriver method verifyMax.

private static void verifyMax(final Map<TopicPartition, List<ConsumerRecord<byte[], byte[]>>> inputPerTopicPerPartition, final Map<TopicPartition, List<ConsumerRecord<byte[], byte[]>>> maxPerTopicPerPartition) {
    final StringDeserializer stringDeserializer = new StringDeserializer();
    final IntegerDeserializer integerDeserializer = new IntegerDeserializer();
    final HashMap<String, Integer> currentMinPerKey = new HashMap<>();
    for (final Map.Entry<TopicPartition, List<ConsumerRecord<byte[], byte[]>>> partitionRecords : maxPerTopicPerPartition.entrySet()) {
        final TopicPartition inputTopicPartition = new TopicPartition("repartition", partitionRecords.getKey().partition());
        final List<ConsumerRecord<byte[], byte[]>> partitionInput = inputPerTopicPerPartition.get(inputTopicPartition);
        final List<ConsumerRecord<byte[], byte[]>> partitionMax = partitionRecords.getValue();
        if (partitionInput.size() != partitionMax.size()) {
            throw new RuntimeException("Result verification failed: expected " + partitionInput.size() + " records for " + partitionRecords.getKey() + " but received " + partitionMax.size());
        }
        final Iterator<ConsumerRecord<byte[], byte[]>> inputRecords = partitionInput.iterator();
        for (final ConsumerRecord<byte[], byte[]> receivedRecord : partitionMax) {
            final ConsumerRecord<byte[], byte[]> input = inputRecords.next();
            final String receivedKey = stringDeserializer.deserialize(receivedRecord.topic(), receivedRecord.key());
            final int receivedValue = integerDeserializer.deserialize(receivedRecord.topic(), receivedRecord.value());
            final String key = stringDeserializer.deserialize(input.topic(), input.key());
            final int value = integerDeserializer.deserialize(input.topic(), input.value());
            Integer max = currentMinPerKey.get(key);
            if (max == null) {
                max = Integer.MIN_VALUE;
            }
            max = Math.max(max, value);
            currentMinPerKey.put(key, max);
            if (!receivedKey.equals(key) || receivedValue != max) {
                throw new RuntimeException("Result verification failed for " + receivedRecord + " expected <" + key + "," + max + "> but was <" + receivedKey + "," + receivedValue + ">");
            }
        }
    }
}

Example 57 with StringDeserializer

use of org.apache.kafka.common.serialization.StringDeserializer in project kafka by apache.

the class KTableKTableForeignKeyJoinScenarioTest method validateTopologyCanProcessData.

private void validateTopologyCanProcessData(final StreamsBuilder builder) {
    final Properties config = new Properties();
    final String safeTestName = safeUniqueTestName(getClass(), testName);
    config.setProperty(StreamsConfig.DEFAULT_KEY_SERDE_CLASS_CONFIG, Serdes.IntegerSerde.class.getName());
    config.setProperty(StreamsConfig.DEFAULT_VALUE_SERDE_CLASS_CONFIG, Serdes.StringSerde.class.getName());
    config.setProperty(StreamsConfig.STATE_DIR_CONFIG, TestUtils.tempDirectory().getAbsolutePath());
    try (final TopologyTestDriver topologyTestDriver = new TopologyTestDriver(builder.build(), config)) {
        final TestInputTopic<Integer, String> aTopic = topologyTestDriver.createInputTopic("A", new IntegerSerializer(), new StringSerializer());
        final TestInputTopic<Integer, String> bTopic = topologyTestDriver.createInputTopic("B", new IntegerSerializer(), new StringSerializer());
        final TestOutputTopic<Integer, String> output = topologyTestDriver.createOutputTopic("output", new IntegerDeserializer(), new StringDeserializer());
        aTopic.pipeInput(1, "999-alpha");
        bTopic.pipeInput(999, "beta");
        final Map<Integer, String> x = output.readKeyValuesToMap();
        assertThat(x, is(Collections.singletonMap(1, "(999-alpha,(999-alpha,beta))")));
    }
}

Example 58 with StringDeserializer

use of org.apache.kafka.common.serialization.StringDeserializer in project kafka by apache.

the class KStreamWindowAggregateTest method shouldLogAndMeterWhenSkippingExpiredWindow.

@Test
public void shouldLogAndMeterWhenSkippingExpiredWindow() {
    final StreamsBuilder builder = new StreamsBuilder();
    final String topic = "topic";
    final KStream<String, String> stream1 = builder.stream(topic, Consumed.with(Serdes.String(), Serdes.String()));
    stream1.groupByKey(Grouped.with(Serdes.String(), Serdes.String())).windowedBy(TimeWindows.ofSizeAndGrace(ofMillis(10), ofMillis(90)).advanceBy(ofMillis(5))).aggregate(() -> "", MockAggregator.toStringInstance("+"), Materialized.<String, String, WindowStore<Bytes, byte[]>>as("topic1-Canonicalized").withValueSerde(Serdes.String()).withCachingDisabled().withLoggingDisabled().withRetention(Duration.ofMillis(100))).toStream().map((key, value) -> new KeyValue<>(key.toString(), value)).to("output");
    try (final LogCaptureAppender appender = LogCaptureAppender.createAndRegister(KStreamWindowAggregate.class);
        final TopologyTestDriver driver = new TopologyTestDriver(builder.build(), props)) {
        final TestInputTopic<String, String> inputTopic = driver.createInputTopic(topic, new StringSerializer(), new StringSerializer());
        inputTopic.pipeInput("k", "100", 100L);
        inputTopic.pipeInput("k", "0", 0L);
        inputTopic.pipeInput("k", "1", 1L);
        inputTopic.pipeInput("k", "2", 2L);
        inputTopic.pipeInput("k", "3", 3L);
        inputTopic.pipeInput("k", "4", 4L);
        inputTopic.pipeInput("k", "5", 5L);
        inputTopic.pipeInput("k", "6", 6L);
        assertLatenessMetrics(driver, // how many events get dropped
        is(7.0), // k:0 is 100ms late, since its time is 0, but it arrives at stream time 100.
        is(100.0), // (0 + 100 + 99 + 98 + 97 + 96 + 95 + 94) / 8
        is(84.875));
        assertThat(appender.getMessages(), hasItems("Skipping record for expired window. topic=[topic] partition=[0] offset=[1] timestamp=[0] window=[0,10) expiration=[10] streamTime=[100]", "Skipping record for expired window. topic=[topic] partition=[0] offset=[2] timestamp=[1] window=[0,10) expiration=[10] streamTime=[100]", "Skipping record for expired window. topic=[topic] partition=[0] offset=[3] timestamp=[2] window=[0,10) expiration=[10] streamTime=[100]", "Skipping record for expired window. topic=[topic] partition=[0] offset=[4] timestamp=[3] window=[0,10) expiration=[10] streamTime=[100]", "Skipping record for expired window. topic=[topic] partition=[0] offset=[5] timestamp=[4] window=[0,10) expiration=[10] streamTime=[100]", "Skipping record for expired window. topic=[topic] partition=[0] offset=[6] timestamp=[5] window=[0,10) expiration=[10] streamTime=[100]", "Skipping record for expired window. topic=[topic] partition=[0] offset=[7] timestamp=[6] window=[0,10) expiration=[10] streamTime=[100]"));
        final TestOutputTopic<String, String> outputTopic = driver.createOutputTopic("output", new StringDeserializer(), new StringDeserializer());
        assertThat(outputTopic.readRecord(), equalTo(new TestRecord<>("[k@95/105]", "+100", null, 100L)));
        assertThat(outputTopic.readRecord(), equalTo(new TestRecord<>("[k@100/110]", "+100", null, 100L)));
        assertThat(outputTopic.readRecord(), equalTo(new TestRecord<>("[k@5/15]", "+5", null, 5L)));
        assertThat(outputTopic.readRecord(), equalTo(new TestRecord<>("[k@5/15]", "+5+6", null, 6L)));
        assertTrue(outputTopic.isEmpty());
    }
}

Example 59 with StringDeserializer

use of org.apache.kafka.common.serialization.StringDeserializer in project kafka by apache.

the class KTableSourceTest method testKTableSourceEmitOnChange.

// we have disabled KIP-557 until KAFKA-12508 can be properly addressed
@Ignore
@Test
public void testKTableSourceEmitOnChange() {
    final StreamsBuilder builder = new StreamsBuilder();
    final String topic1 = "topic1";
    builder.table(topic1, Consumed.with(Serdes.String(), Serdes.Integer()), Materialized.as("store")).toStream().to("output");
    try (final TopologyTestDriver driver = new TopologyTestDriver(builder.build(), props)) {
        final TestInputTopic<String, Integer> inputTopic = driver.createInputTopic(topic1, new StringSerializer(), new IntegerSerializer());
        final TestOutputTopic<String, Integer> outputTopic = driver.createOutputTopic("output", new StringDeserializer(), new IntegerDeserializer());
        inputTopic.pipeInput("A", 1, 10L);
        inputTopic.pipeInput("B", 2, 11L);
        inputTopic.pipeInput("A", 1, 12L);
        inputTopic.pipeInput("B", 3, 13L);
        // this record should be kept since this is out of order, so the timestamp
        // should be updated in this scenario
        inputTopic.pipeInput("A", 1, 9L);
        assertEquals(1.0, getMetricByName(driver.metrics(), "idempotent-update-skip-total", "stream-processor-node-metrics").metricValue());
        assertEquals(asList(new TestRecord<>("A", 1, Instant.ofEpochMilli(10L)), new TestRecord<>("B", 2, Instant.ofEpochMilli(11L)), new TestRecord<>("B", 3, Instant.ofEpochMilli(13L)), new TestRecord<>("A", 1, Instant.ofEpochMilli(9L))), outputTopic.readRecordsToList());
    }
}

Example 60 with StringDeserializer

use of org.apache.kafka.common.serialization.StringDeserializer in project kafka by apache.

the class KStreamSplitTest method testKStreamSplit.

@Test
public void testKStreamSplit() {
    final Map<String, KStream<Integer, String>> branches = source.split().branch(isEven, Branched.withConsumer(ks -> ks.to("x2"))).branch(isMultipleOfThree, Branched.withConsumer(ks -> ks.to("x3"))).branch(isMultipleOfFive, Branched.withConsumer(ks -> ks.to("x5"))).noDefaultBranch();
    assertEquals(0, branches.size());
    builder.build();
    withDriver(driver -> {
        final TestOutputTopic<Integer, String> x2 = driver.createOutputTopic("x2", new IntegerDeserializer(), new StringDeserializer());
        final TestOutputTopic<Integer, String> x3 = driver.createOutputTopic("x3", new IntegerDeserializer(), new StringDeserializer());
        final TestOutputTopic<Integer, String> x5 = driver.createOutputTopic("x5", new IntegerDeserializer(), new StringDeserializer());
        assertEquals(Arrays.asList("V0", "V2", "V4", "V6"), x2.readValuesToList());
        assertEquals(Arrays.asList("V3"), x3.readValuesToList());
        assertEquals(Arrays.asList("V5"), x5.readValuesToList());
    });
}