| /* |
| * 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. |
| */ |
| |
| package org.apache.seatunnel.translation.source; |
| |
| import org.apache.seatunnel.api.source.SourceEvent; |
| import org.apache.seatunnel.api.source.SourceSplit; |
| import org.apache.seatunnel.api.source.SourceSplitEnumerator; |
| |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Set; |
| |
| public class ParallelEnumeratorContext<SplitT extends SourceSplit> implements SourceSplitEnumerator.Context<SplitT> { |
| |
| protected final ParallelSource<?, SplitT, ?> parallelSource; |
| protected final Integer parallelism; |
| protected final Integer subtaskId; |
| protected volatile boolean running = false; |
| |
| public ParallelEnumeratorContext(ParallelSource<?, SplitT, ?> parallelSource, |
| int parallelism, |
| int subtaskId) { |
| this.parallelSource = parallelSource; |
| this.parallelism = parallelism; |
| this.subtaskId = subtaskId; |
| } |
| |
| @Override |
| public int currentParallelism() { |
| return running ? parallelism : 0; |
| } |
| |
| @Override |
| public Set<Integer> registeredReaders() { |
| return running ? Collections.singleton(subtaskId) : Collections.emptySet(); |
| } |
| |
| public void register() { |
| running = true; |
| } |
| |
| @Override |
| public void assignSplit(int subtaskId, List<SplitT> splits) { |
| if (this.subtaskId == subtaskId) { |
| parallelSource.addSplits(splits); |
| } |
| } |
| |
| @Override |
| public void signalNoMoreSplits(int subtaskId) { |
| if (this.subtaskId == subtaskId) { |
| parallelSource.handleNoMoreSplits(); |
| } |
| } |
| |
| @Override |
| public void sendEventToSourceReader(int subtaskId, SourceEvent event) { |
| // TODO: exception |
| throw new RuntimeException(""); |
| } |
| |
| } |