liugddx commented on code in PR #2974: URL: https://github.com/apache/incubator-seatunnel/pull/2974#discussion_r985434270
########## seatunnel-connectors-v2/connector-fake/src/main/java/org/apache/seatunnel/connectors/seatunnel/fake/source/FakeSourceSplitEnumerator.java: ########## @@ -0,0 +1,149 @@ +/* + * 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.connectors.seatunnel.fake.source; + +import org.apache.seatunnel.api.source.SourceSplitEnumerator; +import org.apache.seatunnel.connectors.seatunnel.fake.state.FakeSourceState; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.io.IOException; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Set; + +public class FakeSourceSplitEnumerator implements SourceSplitEnumerator<FakeSourceSplit, FakeSourceState> { + + private static final Logger LOG = LoggerFactory.getLogger(FakeSourceSplitEnumerator.class); + private final SourceSplitEnumerator.Context<FakeSourceSplit> enumeratorContext; + private final Map<Integer, Set<FakeSourceSplit>> pendingSplits; + private final Integer totalRowNum; + + public FakeSourceSplitEnumerator(SourceSplitEnumerator.Context<FakeSourceSplit> enumeratorContext, Integer totalRowNum) { + this.enumeratorContext = enumeratorContext; + this.pendingSplits = new HashMap<>(); + this.totalRowNum = totalRowNum; + } + + @Override + public void open() { + // No connection needs to be opened + } + + @Override + public void run() throws Exception { + discoverySplits(); + assignPendingSplits(); + } + + @Override + public void close() throws IOException { + // nothing + } + + @Override + public void addSplitsBack(List<FakeSourceSplit> splits, int subtaskId) { + + } + + @Override + public int currentUnassignedSplitSize() { + return 0; + } + + @Override + public void handleSplitRequest(int subtaskId) { + + } + + @Override + public void registerReader(int subtaskId) { + // nothing + } + + @Override + public FakeSourceState snapshotState(long checkpointId) throws Exception { + return null; + } + + @Override + public void notifyCheckpointComplete(long checkpointId) throws Exception { + + } + + private void discoverySplits() { + List<FakeSourceSplit> allSplit = new ArrayList<>(); + LOG.info("Starting to calculate splits."); + int numReaders = enumeratorContext.currentParallelism(); + + if (null != totalRowNum) { Review Comment: > I think fake should be simple,so a simple sharding approach is needed here, and the configuration file does not need to be changed. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
