Examples with StringSerde org.apache.samza.serializers.StringSerde used on opensource projects

Example 36 with StringSerde

use of org.apache.samza.serializers.StringSerde in project samza by apache.

the class RepartitionExample method describe.

@Override
public void describe(StreamApplicationDescriptor appDescriptor) {
    KafkaSystemDescriptor trackingSystem = new KafkaSystemDescriptor("tracking");
    KafkaInputDescriptor<PageViewEvent> inputStreamDescriptor = trackingSystem.getInputDescriptor("pageViewEvent", new JsonSerdeV2<>(PageViewEvent.class));
    KafkaOutputDescriptor<KV<String, MyStreamOutput>> outputStreamDescriptor = trackingSystem.getOutputDescriptor("pageViewEventPerMember", KVSerde.of(new StringSerde(), new JsonSerdeV2<>(MyStreamOutput.class)));
    appDescriptor.withDefaultSystem(trackingSystem);
    MessageStream<PageViewEvent> pageViewEvents = appDescriptor.getInputStream(inputStreamDescriptor);
    OutputStream<KV<String, MyStreamOutput>> pageViewEventPerMember = appDescriptor.getOutputStream(outputStreamDescriptor);
    pageViewEvents.partitionBy(pve -> pve.getMemberId(), pve -> pve, KVSerde.of(new StringSerde(), new JsonSerdeV2<>(PageViewEvent.class)), "partitionBy").window(Windows.keyedTumblingWindow(KV::getKey, Duration.ofMinutes(5), () -> 0, (m, c) -> c + 1, null, null), "window").map(windowPane -> KV.of(windowPane.getKey().getKey(), new MyStreamOutput(windowPane))).sendTo(pageViewEventPerMember);
}

Example 37 with StringSerde

use of org.apache.samza.serializers.StringSerde in project samza by apache.

the class AsyncApplicationExample method describe.

@Override
public void describe(StreamApplicationDescriptor appDescriptor) {
    KafkaSystemDescriptor trackingSystem = new KafkaSystemDescriptor("tracking");
    KafkaInputDescriptor<AdClickEvent> inputStreamDescriptor = trackingSystem.getInputDescriptor("adClickEvent", new JsonSerdeV2<>(AdClickEvent.class));
    KafkaOutputDescriptor<KV<String, EnrichedAdClickEvent>> outputStreamDescriptor = trackingSystem.getOutputDescriptor("enrichedAdClickEvent", KVSerde.of(new StringSerde(), new JsonSerdeV2<>(EnrichedAdClickEvent.class)));
    MessageStream<AdClickEvent> adClickEventStream = appDescriptor.getInputStream(inputStreamDescriptor);
    OutputStream<KV<String, EnrichedAdClickEvent>> enrichedAdClickStream = appDescriptor.getOutputStream(outputStreamDescriptor);
    adClickEventStream.flatMapAsync(AsyncApplicationExample::enrichAdClickEvent).map(enrichedAdClickEvent -> KV.of(enrichedAdClickEvent.getCountry(), enrichedAdClickEvent)).sendTo(enrichedAdClickStream);
}

Example 38 with StringSerde

use of org.apache.samza.serializers.StringSerde in project samza by apache.

the class TestTimeSeriesKeySerde method testStringTimeSeriesKey.

@Test
public void testStringTimeSeriesKey() {
    TimeSeriesKey<String> storeKey = new TimeSeriesKey<>("test", 1, 23);
    TimeSeriesKeySerde<String> serde = new TimeSeriesKeySerde<>(new StringSerde("UTF-8"));
    byte[] serializedBytes = serde.toBytes(storeKey);
    TimeSeriesKey<String> deserializedTimeSeriesKey = serde.fromBytes(serializedBytes);
    assertEquals(storeKey.getKey(), deserializedTimeSeriesKey.getKey());
    assertEquals(storeKey.getSeqNum(), deserializedTimeSeriesKey.getSeqNum());
    assertEquals(storeKey.getTimestamp(), deserializedTimeSeriesKey.getTimestamp());
    assertEquals(storeKey, deserializedTimeSeriesKey);
}

Example 39 with StringSerde

use of org.apache.samza.serializers.StringSerde in project samza by apache.

the class TestOperatorSpec method testOutputOperatorSpec.

@Test
public void testOutputOperatorSpec() {
    Serde<Object> objSerde = new Serde<Object>() {

        @Override
        public Object fromBytes(byte[] bytes) {
            return null;
        }

        @Override
        public byte[] toBytes(Object object) {
            return new byte[0];
        }
    };
    OutputStreamImpl<KV<String, Object>> outputStrmImpl = new OutputStreamImpl<>("mockStreamId", new StringSerde("UTF-8"), objSerde, true);
    OutputOperatorSpec<KV<String, Object>> outputOperatorSpec = new OutputOperatorSpec<>(outputStrmImpl, "op0");
    OutputOperatorSpec<KV<String, Object>> outputOpCopy = (OutputOperatorSpec<KV<String, Object>>) OperatorSpecTestUtils.copyOpSpec(outputOperatorSpec);
    assertNotEquals("Expected deserialized copy of operator spec should not be the same as the original operator spec", outputOperatorSpec, outputOpCopy);
    assertTrue(outputOperatorSpec.isClone(outputOpCopy));
}

Example 40 with StringSerde

use of org.apache.samza.serializers.StringSerde in project samza by apache.

the class TestOperatorSpec method testBroadcastOperatorSpec.

@Test
public void testBroadcastOperatorSpec() {
    OutputStreamImpl<TestOutputMessageEnvelope> outputStream = new OutputStreamImpl<>("output-0", new StringSerde("UTF-8"), new JsonSerdeV2<TestOutputMessageEnvelope>(), true);
    BroadcastOperatorSpec<TestOutputMessageEnvelope> broadcastOpSpec = new BroadcastOperatorSpec<>(outputStream, "broadcast-1");
    BroadcastOperatorSpec<TestOutputMessageEnvelope> broadcastOpCopy = (BroadcastOperatorSpec<TestOutputMessageEnvelope>) OperatorSpecTestUtils.copyOpSpec(broadcastOpSpec);
    assertNotEquals(broadcastOpCopy, broadcastOpSpec);
    assertEquals(broadcastOpCopy.getOpId(), broadcastOpSpec.getOpId());
    assertTrue(broadcastOpCopy.getOutputStream() != broadcastOpSpec.getOutputStream());
    assertEquals(broadcastOpCopy.getOutputStream().getStreamId(), broadcastOpSpec.getOutputStream().getStreamId());
    assertEquals(broadcastOpCopy.getOutputStream().isKeyed(), broadcastOpSpec.getOutputStream().isKeyed());
}