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[FLINK-37112][runtime] Process event time extension related watermark…
…s in operator for DataStream V2
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117 changes: 117 additions & 0 deletions
117
...che/flink/streaming/runtime/watermark/extension/eventtime/EventTimeWatermarkCombiner.java
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| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one or more | ||
| * contributor license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright ownership. | ||
| * The ASF licenses this file to You under the Apache License, Version 2.0 | ||
| * (the "License"); you may not use this file except in compliance with | ||
| * the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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| package org.apache.flink.streaming.runtime.watermark.extension.eventtime; | ||
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| import org.apache.flink.api.common.watermark.BoolWatermark; | ||
| import org.apache.flink.api.common.watermark.LongWatermark; | ||
| import org.apache.flink.api.common.watermark.Watermark; | ||
| import org.apache.flink.datastream.api.extension.eventtime.EventTimeExtension; | ||
| import org.apache.flink.runtime.event.WatermarkEvent; | ||
| import org.apache.flink.streaming.runtime.io.PushingAsyncDataInput.DataOutput; | ||
| import org.apache.flink.streaming.runtime.streamrecord.LatencyMarker; | ||
| import org.apache.flink.streaming.runtime.streamrecord.RecordAttributes; | ||
| import org.apache.flink.streaming.runtime.streamrecord.StreamRecord; | ||
| import org.apache.flink.streaming.runtime.watermark.WatermarkCombiner; | ||
| import org.apache.flink.streaming.runtime.watermarkstatus.StatusWatermarkValve; | ||
| import org.apache.flink.streaming.runtime.watermarkstatus.WatermarkStatus; | ||
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| import java.util.function.Consumer; | ||
|
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| /** | ||
| * A {@link WatermarkCombiner} used to combine {@link EventTimeExtension} related watermarks in | ||
| * input channels. | ||
| */ | ||
| public class EventTimeWatermarkCombiner extends StatusWatermarkValve implements WatermarkCombiner { | ||
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| private WrappedDataOutput<?> output; | ||
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| public EventTimeWatermarkCombiner(int numInputChannels) { | ||
| super(numInputChannels); | ||
| this.output = new WrappedDataOutput<>(); | ||
| } | ||
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| @Override | ||
| public void combineWatermark( | ||
| Watermark watermark, int channelIndex, Consumer<Watermark> watermarkEmitter) | ||
| throws Exception { | ||
| output.setWatermarkEmitter(watermarkEmitter); | ||
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| if (EventTimeExtension.isEventTimeWatermark(watermark)) { | ||
| inputWatermark( | ||
| new org.apache.flink.streaming.api.watermark.Watermark( | ||
| ((LongWatermark) watermark).getValue()), | ||
| channelIndex, | ||
| output); | ||
| } else if (EventTimeExtension.isIdleStatusWatermark(watermark.getIdentifier())) { | ||
| inputWatermarkStatus( | ||
| new WatermarkStatus( | ||
| ((BoolWatermark) watermark).getValue() | ||
| ? WatermarkStatus.IDLE_STATUS | ||
| : WatermarkStatus.ACTIVE_STATUS), | ||
| channelIndex, | ||
| output); | ||
| } | ||
| } | ||
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| /** Wrap {@link DataOutput} to emit watermarks using {@code watermarkEmitter}. */ | ||
| static class WrappedDataOutput<T> implements DataOutput<T> { | ||
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| private Consumer<Watermark> watermarkEmitter; | ||
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| public WrappedDataOutput() {} | ||
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| public void setWatermarkEmitter(Consumer<Watermark> watermarkEmitter) { | ||
| this.watermarkEmitter = watermarkEmitter; | ||
| } | ||
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| @Override | ||
| public void emitRecord(StreamRecord<T> streamRecord) throws Exception { | ||
| throw new RuntimeException("Should not emit records with this output."); | ||
| } | ||
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| @Override | ||
| public void emitWatermark(org.apache.flink.streaming.api.watermark.Watermark watermark) | ||
| throws Exception { | ||
| watermarkEmitter.accept( | ||
| EventTimeExtension.EVENT_TIME_WATERMARK_DECLARATION.newWatermark( | ||
| watermark.getTimestamp())); | ||
| } | ||
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| @Override | ||
| public void emitWatermarkStatus(WatermarkStatus watermarkStatus) throws Exception { | ||
| watermarkEmitter.accept( | ||
| EventTimeExtension.IDLE_STATUS_WATERMARK_DECLARATION.newWatermark( | ||
| watermarkStatus.isIdle())); | ||
| } | ||
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| @Override | ||
| public void emitLatencyMarker(LatencyMarker latencyMarker) throws Exception { | ||
| throw new RuntimeException("Should not emit LatencyMarker with this output."); | ||
| } | ||
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| @Override | ||
| public void emitRecordAttributes(RecordAttributes recordAttributes) throws Exception { | ||
| throw new RuntimeException("Should not emit RecordAttributes with this output."); | ||
| } | ||
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| @Override | ||
| public void emitWatermark(WatermarkEvent watermark) throws Exception { | ||
| throw new RuntimeException("Should not emit WatermarkEvent with this output."); | ||
| } | ||
| } | ||
| } |
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