Examples with WatermarkOutput org.apache.flink.api.common.eventtime.WatermarkOutput used on opensource projects

Example 1 with WatermarkOutput

use of org.apache.flink.api.common.eventtime.WatermarkOutput in project flink by apache.

the class ProgressiveTimestampsAndWatermarks method createMainOutput.

// ------------------------------------------------------------------------
@Override
public ReaderOutput<T> createMainOutput(PushingAsyncDataInput.DataOutput<T> output, WatermarkUpdateListener watermarkEmitted) {
    // At the moment, we assume only one output is ever created!
    // This assumption is strict, currently, because many of the classes in this implementation
    // do not
    // support re-assigning the underlying output
    checkState(currentMainOutput == null && currentPerSplitOutputs == null, "already created a main output");
    final WatermarkOutput watermarkOutput = new WatermarkToDataOutput(output, watermarkEmitted);
    final WatermarkGenerator<T> watermarkGenerator = watermarksFactory.createWatermarkGenerator(watermarksContext);
    currentPerSplitOutputs = new SplitLocalOutputs<>(output, watermarkOutput, timestampAssigner, watermarksFactory, watermarksContext);
    currentMainOutput = new StreamingReaderOutput<>(output, watermarkOutput, timestampAssigner, watermarkGenerator, currentPerSplitOutputs);
    return currentMainOutput;
}