Examples with StreamsBuilder org.apache.kafka.streams.StreamsBuilder used on opensource projects

Example 26 with StreamsBuilder

use of org.apache.kafka.streams.StreamsBuilder in project apache-kafka-on-k8s by banzaicloud.

the class KTableFilterTest method testValueGetter.

@Test
public void testValueGetter() {
    StreamsBuilder builder = new StreamsBuilder();
    String topic1 = "topic1";
    KTableImpl<String, Integer, Integer> table1 = (KTableImpl<String, Integer, Integer>) builder.table(topic1, consumed);
    KTableImpl<String, Integer, Integer> table2 = (KTableImpl<String, Integer, Integer>) table1.filter(new Predicate<String, Integer>() {

        @Override
        public boolean test(String key, Integer value) {
            return (value % 2) == 0;
        }
    });
    KTableImpl<String, Integer, Integer> table3 = (KTableImpl<String, Integer, Integer>) table1.filterNot(new Predicate<String, Integer>() {

        @Override
        public boolean test(String key, Integer value) {
            return (value % 2) == 0;
        }
    });
    doTestValueGetter(builder, table2, table3, topic1);
}

Example 27 with StreamsBuilder

use of org.apache.kafka.streams.StreamsBuilder in project apache-kafka-on-k8s by banzaicloud.

the class KTableFilterTest method testNotSendingOldValue.

@Test
public void testNotSendingOldValue() {
    StreamsBuilder builder = new StreamsBuilder();
    String topic1 = "topic1";
    KTableImpl<String, Integer, Integer> table1 = (KTableImpl<String, Integer, Integer>) builder.table(topic1, consumed);
    KTableImpl<String, Integer, Integer> table2 = (KTableImpl<String, Integer, Integer>) table1.filter(new Predicate<String, Integer>() {

        @Override
        public boolean test(String key, Integer value) {
            return (value % 2) == 0;
        }
    });
    doTestNotSendingOldValue(builder, table1, table2, topic1);
}

Example 28 with StreamsBuilder

use of org.apache.kafka.streams.StreamsBuilder in project apache-kafka-on-k8s by banzaicloud.

the class KTableFilterTest method testQueryableValueGetter.

@Test
public void testQueryableValueGetter() {
    StreamsBuilder builder = new StreamsBuilder();
    String topic1 = "topic1";
    KTableImpl<String, Integer, Integer> table1 = (KTableImpl<String, Integer, Integer>) builder.table(topic1, consumed);
    KTableImpl<String, Integer, Integer> table2 = (KTableImpl<String, Integer, Integer>) table1.filter(new Predicate<String, Integer>() {

        @Override
        public boolean test(String key, Integer value) {
            return (value % 2) == 0;
        }
    }, "anyStoreNameFilter");
    KTableImpl<String, Integer, Integer> table3 = (KTableImpl<String, Integer, Integer>) table1.filterNot(new Predicate<String, Integer>() {

        @Override
        public boolean test(String key, Integer value) {
            return (value % 2) == 0;
        }
    });
    doTestValueGetter(builder, table2, table3, topic1);
}

Example 29 with StreamsBuilder

use of org.apache.kafka.streams.StreamsBuilder in project apache-kafka-on-k8s by banzaicloud.

the class KTableForeachTest method testForeach.

@Test
public void testForeach() {
    // Given
    List<KeyValue<Integer, String>> inputRecords = Arrays.asList(new KeyValue<>(0, "zero"), new KeyValue<>(1, "one"), new KeyValue<>(2, "two"), new KeyValue<>(3, "three"));
    List<KeyValue<Integer, String>> expectedRecords = Arrays.asList(new KeyValue<>(0, "ZERO"), new KeyValue<>(2, "ONE"), new KeyValue<>(4, "TWO"), new KeyValue<>(6, "THREE"));
    final List<KeyValue<Integer, String>> actualRecords = new ArrayList<>();
    ForeachAction<Integer, String> action = new ForeachAction<Integer, String>() {

        @Override
        public void apply(Integer key, String value) {
            actualRecords.add(new KeyValue<>(key * 2, value.toUpperCase(Locale.ROOT)));
        }
    };
    // When
    StreamsBuilder builder = new StreamsBuilder();
    KTable<Integer, String> table = builder.table(topicName, Consumed.with(intSerde, stringSerde), Materialized.<Integer, String, KeyValueStore<Bytes, byte[]>>as(topicName).withKeySerde(intSerde).withValueSerde(stringSerde));
    table.foreach(action);
    // Then
    driver.setUp(builder, stateDir);
    for (KeyValue<Integer, String> record : inputRecords) {
        driver.process(topicName, record.key, record.value);
    }
    driver.flushState();
    assertEquals(expectedRecords.size(), actualRecords.size());
    for (int i = 0; i < expectedRecords.size(); i++) {
        KeyValue<Integer, String> expectedRecord = expectedRecords.get(i);
        KeyValue<Integer, String> actualRecord = actualRecords.get(i);
        assertEquals(expectedRecord, actualRecord);
    }
}

Example 30 with StreamsBuilder

use of org.apache.kafka.streams.StreamsBuilder in project apache-kafka-on-k8s by banzaicloud.

the class KTableImplTest method testValueGetter.

@Test
public void testValueGetter() {
    final StreamsBuilder builder = new StreamsBuilder();
    String topic1 = "topic1";
    String topic2 = "topic2";
    String storeName2 = "storeName2";
    KTableImpl<String, String, String> table1 = (KTableImpl<String, String, String>) builder.table(topic1, consumed);
    KTableImpl<String, String, Integer> table2 = (KTableImpl<String, String, Integer>) table1.mapValues(new ValueMapper<String, Integer>() {

        @Override
        public Integer apply(String value) {
            return new Integer(value);
        }
    });
    KTableImpl<String, Integer, Integer> table3 = (KTableImpl<String, Integer, Integer>) table2.filter(new Predicate<String, Integer>() {

        @Override
        public boolean test(String key, Integer value) {
            return (value % 2) == 0;
        }
    });
    KTableImpl<String, String, String> table4 = (KTableImpl<String, String, String>) table1.through(stringSerde, stringSerde, topic2, storeName2);
    KTableValueGetterSupplier<String, String> getterSupplier1 = table1.valueGetterSupplier();
    KTableValueGetterSupplier<String, Integer> getterSupplier2 = table2.valueGetterSupplier();
    KTableValueGetterSupplier<String, Integer> getterSupplier3 = table3.valueGetterSupplier();
    KTableValueGetterSupplier<String, String> getterSupplier4 = table4.valueGetterSupplier();
    driver.setUp(builder, stateDir, null, null);
    // two state store should be created
    assertEquals(2, driver.allStateStores().size());
    KTableValueGetter<String, String> getter1 = getterSupplier1.get();
    getter1.init(driver.context());
    KTableValueGetter<String, Integer> getter2 = getterSupplier2.get();
    getter2.init(driver.context());
    KTableValueGetter<String, Integer> getter3 = getterSupplier3.get();
    getter3.init(driver.context());
    KTableValueGetter<String, String> getter4 = getterSupplier4.get();
    getter4.init(driver.context());
    driver.process(topic1, "A", "01");
    driver.process(topic1, "B", "01");
    driver.process(topic1, "C", "01");
    driver.flushState();
    assertEquals("01", getter1.get("A"));
    assertEquals("01", getter1.get("B"));
    assertEquals("01", getter1.get("C"));
    assertEquals(new Integer(1), getter2.get("A"));
    assertEquals(new Integer(1), getter2.get("B"));
    assertEquals(new Integer(1), getter2.get("C"));
    assertNull(getter3.get("A"));
    assertNull(getter3.get("B"));
    assertNull(getter3.get("C"));
    assertEquals("01", getter4.get("A"));
    assertEquals("01", getter4.get("B"));
    assertEquals("01", getter4.get("C"));
    driver.process(topic1, "A", "02");
    driver.process(topic1, "B", "02");
    driver.flushState();
    assertEquals("02", getter1.get("A"));
    assertEquals("02", getter1.get("B"));
    assertEquals("01", getter1.get("C"));
    assertEquals(new Integer(2), getter2.get("A"));
    assertEquals(new Integer(2), getter2.get("B"));
    assertEquals(new Integer(1), getter2.get("C"));
    assertEquals(new Integer(2), getter3.get("A"));
    assertEquals(new Integer(2), getter3.get("B"));
    assertNull(getter3.get("C"));
    assertEquals("02", getter4.get("A"));
    assertEquals("02", getter4.get("B"));
    assertEquals("01", getter4.get("C"));
    driver.process(topic1, "A", "03");
    driver.flushState();
    assertEquals("03", getter1.get("A"));
    assertEquals("02", getter1.get("B"));
    assertEquals("01", getter1.get("C"));
    assertEquals(new Integer(3), getter2.get("A"));
    assertEquals(new Integer(2), getter2.get("B"));
    assertEquals(new Integer(1), getter2.get("C"));
    assertNull(getter3.get("A"));
    assertEquals(new Integer(2), getter3.get("B"));
    assertNull(getter3.get("C"));
    assertEquals("03", getter4.get("A"));
    assertEquals("02", getter4.get("B"));
    assertEquals("01", getter4.get("C"));
    driver.process(topic1, "A", null);
    driver.flushState();
    assertNull(getter1.get("A"));
    assertEquals("02", getter1.get("B"));
    assertEquals("01", getter1.get("C"));
    assertNull(getter2.get("A"));
    assertEquals(new Integer(2), getter2.get("B"));
    assertEquals(new Integer(1), getter2.get("C"));
    assertNull(getter3.get("A"));
    assertEquals(new Integer(2), getter3.get("B"));
    assertNull(getter3.get("C"));
    assertNull(getter4.get("A"));
    assertEquals("02", getter4.get("B"));
    assertEquals("01", getter4.get("C"));
}