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[WIP][feature][spark] Support streaming
- Support Spark Continuous Processing
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76 changes: 76 additions & 0 deletions
76
...translation/spark/source/partition/continuous/ContinuousStreamSplitEnumeratorContext.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.seatunnel.translation.spark.source.partition.continuous; | ||
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| import org.apache.seatunnel.api.common.metrics.AbstractMetricsContext; | ||
| import org.apache.seatunnel.api.common.metrics.MetricsContext; | ||
| import org.apache.seatunnel.api.event.EventListener; | ||
| import org.apache.seatunnel.api.source.SourceEvent; | ||
| import org.apache.seatunnel.api.source.SourceSplit; | ||
| import org.apache.seatunnel.api.source.SourceSplitEnumerator; | ||
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| import java.util.HashSet; | ||
| import java.util.List; | ||
| import java.util.Set; | ||
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| public class ContinuousStreamSplitEnumeratorContext<SplitT extends SourceSplit> | ||
| implements SourceSplitEnumerator.Context<SplitT> { | ||
| private final int parallelism; | ||
| private final EventListener eventListener; | ||
| private final Set<Integer> readers = new HashSet<>(); | ||
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| public ContinuousStreamSplitEnumeratorContext(int parallelism, EventListener eventListener) { | ||
| this.parallelism = parallelism; | ||
| this.eventListener = eventListener; | ||
| } | ||
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| @Override | ||
| public int currentParallelism() { | ||
| return this.parallelism; | ||
| } | ||
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| @Override | ||
| public Set<Integer> registeredReaders() { | ||
| return this.readers; | ||
| } | ||
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| @Override | ||
| public void assignSplit(int subtaskId, List<SplitT> splits) {} | ||
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| @Override | ||
| public void signalNoMoreSplits(int subtask) {} | ||
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| @Override | ||
| public void sendEventToSourceReader(int subtaskId, SourceEvent event) { | ||
| throw new UnsupportedOperationException( | ||
| "Flink ParallelSource don't support sending SourceEvent. " | ||
| + "Please implement the `SupportCoordinate` marker interface on the SeaTunnel source."); | ||
| } | ||
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| @Override | ||
| public MetricsContext getMetricsContext() { | ||
| // TODO Waiting for Flink and Spark to implement MetricsContext | ||
| // https://github.com/apache/seatunnel/issues/3431 | ||
| return new AbstractMetricsContext() {}; | ||
| } | ||
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| @Override | ||
| public EventListener getEventListener() { | ||
| return eventListener; | ||
| } | ||
| } |
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67 changes: 67 additions & 0 deletions
67
...atunnel/translation/spark/source/partition/continuous/source/endpoint/EndpointSource.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,67 @@ | ||
| /* | ||
| * 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.seatunnel.translation.spark.source.partition.continuous.source.endpoint; | ||
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| import org.apache.seatunnel.api.source.Collector; | ||
| import org.apache.seatunnel.api.source.SeaTunnelSource; | ||
| import org.apache.seatunnel.api.source.SourceSplit; | ||
| import org.apache.seatunnel.api.source.SourceSplitEnumerator; | ||
| import org.apache.seatunnel.translation.source.BaseSourceFunction; | ||
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| import java.io.Serializable; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
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| public class EndpointSource<T, SplitT extends SourceSplit, StateT extends Serializable> | ||
| implements BaseSourceFunction<T> { | ||
| private final SeaTunnelSource<T, SplitT, StateT> source; | ||
| protected final SourceSplitEnumerator<SplitT, StateT> splitEnumerator; | ||
| protected final Integer parallelism; | ||
| protected final String jobId; | ||
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| public EndpointSource( | ||
| SeaTunnelSource<T, SplitT, StateT> source, Integer parallelism, String jobId) { | ||
| this.source = source; | ||
| this.parallelism = parallelism; | ||
| this.jobId = jobId; | ||
| SourceSplitEnumerator.Context<SplitT> enumeratorContext = | ||
| new EndpointSplitEnumeratorContext<>(parallelism, jobId); | ||
| try { | ||
| splitEnumerator = source.restoreEnumerator(enumeratorContext, null); | ||
| } catch (Exception e) { | ||
| throw new RuntimeException(e); | ||
| } | ||
| } | ||
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| @Override | ||
| public void open() throws Exception {} | ||
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| @Override | ||
| public void run(Collector<T> collector) throws Exception {} | ||
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| @Override | ||
| public Map<Integer, List<byte[]>> snapshotState(long checkpointId) throws Exception { | ||
| return null; | ||
| } | ||
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| @Override | ||
| public void close() throws Exception {} | ||
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| @Override | ||
| public void notifyCheckpointComplete(long checkpointId) throws Exception {} | ||
| } |
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