Examples with Windows org.apache.samza.operators.windows.Windows used on opensource projects

Example 1 with Windows

use of org.apache.samza.operators.windows.Windows in project samza by apache.

the class TestExecutionPlanner method createStreamGraphWithJoinAndWindow.

private StreamGraphImpl createStreamGraphWithJoinAndWindow() {
    StreamGraphImpl streamGraph = new StreamGraphImpl(runner, config);
    BiFunction msgBuilder = mock(BiFunction.class);
    MessageStream m1 = streamGraph.getInputStream("input1", msgBuilder).map(m -> m);
    MessageStream m2 = streamGraph.getInputStream("input2", msgBuilder).partitionBy(m -> "haha").filter(m -> true);
    MessageStream m3 = streamGraph.getInputStream("input3", msgBuilder).filter(m -> true).partitionBy(m -> "hehe").map(m -> m);
    Function mockFn = mock(Function.class);
    OutputStream<Object, Object, Object> output1 = streamGraph.getOutputStream("output1", mockFn, mockFn);
    OutputStream<Object, Object, Object> output2 = streamGraph.getOutputStream("output2", mockFn, mockFn);
    m1.map(m -> m).filter(m -> true).window(Windows.<Object, Object>keyedTumblingWindow(m -> m, Duration.ofMillis(8)));
    m2.map(m -> m).filter(m -> true).window(Windows.<Object, Object>keyedTumblingWindow(m -> m, Duration.ofMillis(16)));
    m1.join(m2, mock(JoinFunction.class), Duration.ofMillis(1600)).sendTo(output1);
    m3.join(m2, mock(JoinFunction.class), Duration.ofMillis(100)).sendTo(output2);
    m3.join(m2, mock(JoinFunction.class), Duration.ofMillis(252)).sendTo(output2);
    return streamGraph;
}

Example 2 with Windows

use of org.apache.samza.operators.windows.Windows in project samza by apache.

the class AppWithGlobalConfigExample 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, PageViewCount>> outputStreamDescriptor = trackingSystem.getOutputDescriptor("pageViewEventPerMember", KVSerde.of(new StringSerde(), new JsonSerdeV2<>(PageViewCount.class)));
    appDescriptor.getInputStream(inputStreamDescriptor).window(Windows.<PageViewEvent, String, Integer>keyedTumblingWindow(PageViewEvent::getMemberId, Duration.ofSeconds(10), () -> 0, (m, c) -> c + 1, null, null).setEarlyTrigger(Triggers.repeat(Triggers.count(5))).setAccumulationMode(AccumulationMode.DISCARDING), "window1").map(m -> KV.of(m.getKey().getKey(), buildPageViewCount(m))).sendTo(appDescriptor.getOutputStream(outputStreamDescriptor));
    appDescriptor.withMetricsReporterFactories(new HashMap<>());
}