zachjsh commented on code in PR #16813: URL: https://github.com/apache/druid/pull/16813#discussion_r1700868749
########## extensions-core/kinesis-indexing-service/src/main/java/org/apache/druid/data/input/kinesis/KinesisInputReader.java: ########## @@ -0,0 +1,256 @@ +/* + * 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.druid.data.input.kinesis; + +import com.google.common.collect.Lists; +import org.apache.druid.data.input.InputEntityReader; +import org.apache.druid.data.input.InputRow; +import org.apache.druid.data.input.InputRowListPlusRawValues; +import org.apache.druid.data.input.InputRowSchema; +import org.apache.druid.data.input.MapBasedInputRow; +import org.apache.druid.data.input.impl.MapInputRowParser; +import org.apache.druid.indexing.seekablestream.SettableByteEntity; +import org.apache.druid.java.util.common.CloseableIterators; +import org.apache.druid.java.util.common.parsers.CloseableIterator; +import org.joda.time.DateTime; + +import java.io.IOException; +import java.util.AbstractMap; +import java.util.Collections; +import java.util.HashMap; +import java.util.HashSet; +import java.util.LinkedHashSet; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.function.Function; +import java.util.stream.Collectors; + +public class KinesisInputReader implements InputEntityReader +{ + + private final InputRowSchema inputRowSchema; + private final SettableByteEntity<KinesisRecordEntity> source; + private final InputEntityReader valueParser; + private final String timestampColumnName; + + public KinesisInputReader( + InputRowSchema inputRowSchema, + SettableByteEntity<KinesisRecordEntity> source, + InputEntityReader valueParser, + String timestampColumnName + ) + { + this.inputRowSchema = inputRowSchema; + this.source = source; + this.valueParser = valueParser; + this.timestampColumnName = timestampColumnName; + + } + + @Override + public CloseableIterator<InputRow> read() throws IOException + { + final KinesisRecordEntity record = source.getEntity(); + final Map<String, Object> mergedHeaderMap = extractHeaders(record); + + // Ignore tombstone records that have null values. + if (record.getRecord().getData() != null) { + return buildBlendedRows(valueParser, mergedHeaderMap); + } else { + return CloseableIterators.withEmptyBaggage(buildInputRowsForMap(mergedHeaderMap).iterator()); + } + } + + @Override + public CloseableIterator<InputRowListPlusRawValues> sample() throws IOException + { + final KinesisRecordEntity record = source.getEntity(); + InputRowListPlusRawValues keysAndHeader = extractHeaderAndKeysSample(record); + if (record.getRecord().getData() != null) { + return buildBlendedRowsSample(valueParser, keysAndHeader.getRawValues()); + } else { + final List<InputRowListPlusRawValues> rows = Collections.singletonList(keysAndHeader); + return CloseableIterators.withEmptyBaggage(rows.iterator()); + } + } + + private Map<String, Object> extractHeaders(KinesisRecordEntity record) Review Comment: yes, we may add more properties to this like `partitionKey` in the future. -- 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: commits-unsubscr...@druid.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@druid.apache.org For additional commands, e-mail: commits-h...@druid.apache.org
