org.apache.flink.streaming.api.functions.IngestionTimeExtractor Java Examples

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Example #1

Source File: FlinkStreamingTransformTranslators.java From flink-dataflow with Apache License 2.0

6 votes

@Override
public void translateNode(Read.Unbounded<T> transform, FlinkStreamingTranslationContext context) {
	PCollection<T> output = context.getOutput(transform);

	DataStream<WindowedValue<T>> source;
	if (transform.getSource().getClass().equals(UnboundedFlinkSource.class)) {
		UnboundedFlinkSource flinkSource = (UnboundedFlinkSource) transform.getSource();
		source = context.getExecutionEnvironment()
				.addSource(flinkSource.getFlinkSource())
				.flatMap(new FlatMapFunction<String, WindowedValue<String>>() {
					@Override
					public void flatMap(String s, Collector<WindowedValue<String>> collector) throws Exception {
						collector.collect(WindowedValue.<String>of(s, Instant.now(), GlobalWindow.INSTANCE, PaneInfo.NO_FIRING));
					}
				}).assignTimestampsAndWatermarks(new IngestionTimeExtractor());
	} else {
		source = context.getExecutionEnvironment()
				.addSource(new UnboundedSourceWrapper<>(context.getPipelineOptions(), transform));
	}
	context.setOutputDataStream(output, source);
}