aalexandrov commented on a change in pull request #13770: URL: https://github.com/apache/flink/pull/13770#discussion_r517280149
########## File path: flink-connectors/flink-connector-kinesis/src/main/java/org/apache/flink/streaming/connectors/kinesis/table/KinesisDynamicSource.java ########## @@ -0,0 +1,223 @@ +/* + * 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.flink.streaming.connectors.kinesis.table; + +import org.apache.flink.annotation.Internal; +import org.apache.flink.api.common.serialization.DeserializationSchema; +import org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumer; +import org.apache.flink.streaming.connectors.kinesis.serialization.KinesisDeserializationSchema; +import org.apache.flink.streaming.connectors.kinesis.serialization.KinesisDeserializationSchemaWrapper; +import org.apache.flink.table.connector.ChangelogMode; +import org.apache.flink.table.connector.format.DecodingFormat; +import org.apache.flink.table.connector.source.DynamicTableSource; +import org.apache.flink.table.connector.source.ScanTableSource; +import org.apache.flink.table.connector.source.SourceFunctionProvider; +import org.apache.flink.table.connector.source.abilities.SupportsReadingMetadata; +import org.apache.flink.table.data.RowData; +import org.apache.flink.table.types.DataType; +import org.apache.flink.util.Preconditions; + +import javax.annotation.Nullable; + +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.Objects; +import java.util.Properties; +import java.util.stream.Collectors; + +import static org.apache.flink.streaming.connectors.kinesis.table.RowDataKinesisDeserializationSchema.Metadata; + +/** + * Kinesis-backed {@link ScanTableSource}. + */ +@Internal +public class KinesisDynamicSource implements ScanTableSource, SupportsReadingMetadata { + + /** List of read-only metadata fields that the source can provide upstream upon request. */ + private static final Map<String, DataType> READABLE_METADATA = + new HashMap<String, DataType>() {{ + for (Metadata metadata : Metadata.values()) { + put(metadata.name(), metadata.getDataType()); + } + }}; + + // -------------------------------------------------------------------------------------------- + // Mutable attributes + // -------------------------------------------------------------------------------------------- + + /** Data type that describes the final output of the source. */ + private DataType producedDataType; + + /** Metadata that is requested to be appended at the end of a physical source row. */ + private List<Metadata> requestedMetadataFields; + + // -------------------------------------------------------------------------------------------- + // Scan format attributes + // -------------------------------------------------------------------------------------------- + + /** Data type to configure the format. */ + private final DataType physicalDataType; + + /** Scan format for decoding records from Kinesis. */ + private final DecodingFormat<DeserializationSchema<RowData>> decodingFormat; + + // -------------------------------------------------------------------------------------------- + // Kinesis-specific attributes + // -------------------------------------------------------------------------------------------- + + /** The Kinesis stream to consume. */ + private final String stream; + + /** Properties for the Kinesis consumer. */ + private final Properties consumerProperties; + + public KinesisDynamicSource( + DataType physicalDataType, + String stream, + Properties consumerProperties, + DecodingFormat<DeserializationSchema<RowData>> decodingFormat) { + this( + physicalDataType, + stream, + consumerProperties, + decodingFormat, + null, + Collections.emptyList()); + } + + public KinesisDynamicSource( + DataType physicalDataType, + String stream, + Properties consumerProperties, + DecodingFormat<DeserializationSchema<RowData>> decodingFormat, + @Nullable DataType producedDataType, + List<Metadata> requestedMetadataFields) { + + this.producedDataType = this.physicalDataType = Preconditions.checkNotNull( + physicalDataType, + "Produced data type must not be null."); + this.stream = Preconditions.checkNotNull( + stream, + "Stream must not be null."); + this.consumerProperties = Preconditions.checkNotNull( + consumerProperties, + "Properties must not be null."); + this.decodingFormat = Preconditions.checkNotNull( + decodingFormat, + "Decoding format must not be null."); + this.producedDataType = producedDataType; Review comment: Done. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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