Examples with SumDouble org.apache.apex.malhar.lib.window.accumulation.SumDouble used on opensource projects

Example 1 with SumDouble

use of org.apache.apex.malhar.lib.window.accumulation.SumDouble in project apex-malhar by apache.

the class Application method populateDAG.

@Override
public void populateDAG(DAG dag, Configuration conf) {
    dag.setAttribute(DAG.STREAMING_WINDOW_SIZE_MILLIS, 1000);
    NycTaxiDataReader inputOperator = new NycTaxiDataReader();
    inputOperator.setDirectory("/user/" + System.getProperty("user.name") + "/nyctaxidata");
    inputOperator.getScanner().setFilePatternRegexp(".*\\.csv$");
    dag.addOperator("NycTaxiDataReader", inputOperator);
    NycTaxiCsvParser parser = dag.addOperator("NycTaxiCsvParser", new NycTaxiCsvParser());
    NycTaxiZipFareExtractor extractor = dag.addOperator("NycTaxiZipFareExtractor", new NycTaxiZipFareExtractor());
    KeyedWindowedOperatorImpl<String, Double, MutableDouble, Double> windowedOperator = new KeyedWindowedOperatorImpl<>();
    // 5-minute windows slide by 1 minute
    windowedOperator.setWindowOption(new WindowOption.TimeWindows(Duration.standardMinutes(5)).slideBy(Duration.standardMinutes(1)));
    // Because we only care about the last 5 minutes, and the watermark is set at t-1 minutes, lateness horizon is set to 4 minutes.
    windowedOperator.setAllowedLateness(Duration.standardMinutes(4));
    windowedOperator.setAccumulation(new SumDouble());
    windowedOperator.setTriggerOption(TriggerOption.AtWatermark());
    windowedOperator.setDataStorage(new InMemoryWindowedKeyedStorage<String, MutableDouble>());
    windowedOperator.setWindowStateStorage(new InMemoryWindowedStorage<WindowState>());
    dag.addOperator("WindowedOperator", windowedOperator);
    NycTaxiDataServer dataServer = dag.addOperator("NycTaxiDataServer", new NycTaxiDataServer());
    ConsoleOutputOperator console = dag.addOperator("console", new ConsoleOutputOperator());
    dag.addStream("input_to_parser", inputOperator.output, parser.input);
    dag.addStream("parser_to_extractor", parser.output, extractor.input);
    dag.addStream("extractor_to_windowed", extractor.output, windowedOperator.input);
    dag.addStream("extractor_watermark", extractor.watermarkOutput, windowedOperator.controlInput);
    dag.addStream("windowed_to_console", windowedOperator.output, dataServer.input, console.input);
    PubSubWebSocketAppDataQuery wsQuery = new PubSubWebSocketAppDataQuery();
    wsQuery.enableEmbeddedMode();
    wsQuery.setTopic("nyctaxi.query");
    try {
        wsQuery.setUri(new URI("ws://" + java.net.InetAddress.getLocalHost().getHostName() + ":8890/pubsub"));
    } catch (URISyntaxException | UnknownHostException ex) {
        throw Throwables.propagate(ex);
    }
    dataServer.setEmbeddableQueryInfoProvider(wsQuery);
    PubSubWebSocketAppDataResult wsResult = dag.addOperator("QueryResult", new PubSubWebSocketAppDataResult());
    wsResult.setTopic("nyctaxi.result");
    try {
        wsResult.setUri(new URI("ws://" + java.net.InetAddress.getLocalHost().getHostName() + ":8890/pubsub"));
    } catch (URISyntaxException | UnknownHostException ex) {
        throw Throwables.propagate(ex);
    }
    dag.addStream("server_to_query_output", dataServer.queryResult, wsResult.input);
}