mxm commented on code in PR #13341: URL: https://github.com/apache/iceberg/pull/13341#discussion_r2154123122
########## flink/v1.20/flink/src/main/java/org/apache/iceberg/flink/sink/dynamic/DynamicIcebergSink.java: ########## @@ -0,0 +1,406 @@ +/* + * 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.iceberg.flink.sink.dynamic; + +import java.io.IOException; +import java.util.Map; +import java.util.Optional; +import java.util.UUID; +import org.apache.flink.annotation.Experimental; +import org.apache.flink.annotation.VisibleForTesting; +import org.apache.flink.api.common.typeinfo.TypeInformation; +import org.apache.flink.api.connector.sink2.Committer; +import org.apache.flink.api.connector.sink2.CommitterInitContext; +import org.apache.flink.api.connector.sink2.Sink; +import org.apache.flink.api.connector.sink2.SinkWriter; +import org.apache.flink.api.connector.sink2.SupportsCommitter; +import org.apache.flink.api.java.functions.KeySelector; +import org.apache.flink.configuration.Configuration; +import org.apache.flink.configuration.ReadableConfig; +import org.apache.flink.core.io.SimpleVersionedSerializer; +import org.apache.flink.streaming.api.connector.sink2.CommittableMessage; +import org.apache.flink.streaming.api.connector.sink2.CommittableMessageTypeInfo; +import org.apache.flink.streaming.api.connector.sink2.CommittableSummary; +import org.apache.flink.streaming.api.connector.sink2.CommittableWithLineage; +import org.apache.flink.streaming.api.connector.sink2.SupportsPostCommitTopology; +import org.apache.flink.streaming.api.connector.sink2.SupportsPreCommitTopology; +import org.apache.flink.streaming.api.connector.sink2.SupportsPreWriteTopology; +import org.apache.flink.streaming.api.datastream.DataStream; +import org.apache.flink.streaming.api.datastream.DataStreamSink; +import org.apache.flink.streaming.api.datastream.SingleOutputStreamOperator; +import org.apache.flink.table.data.RowData; +import org.apache.flink.util.OutputTag; +import org.apache.iceberg.FileFormat; +import org.apache.iceberg.Table; +import org.apache.iceberg.flink.CatalogLoader; +import org.apache.iceberg.flink.FlinkWriteConf; +import org.apache.iceberg.flink.FlinkWriteOptions; +import org.apache.iceberg.flink.sink.IcebergSink; +import org.apache.iceberg.flink.sink.SinkUtil; +import org.apache.iceberg.relocated.com.google.common.base.Preconditions; +import org.apache.iceberg.relocated.com.google.common.collect.Maps; + +/** + * Dynamic version of the IcebergSink which supports: + * + * <ul> + * <li>Writing to any number of tables (No more 1:1 sink/topic relationship). + * <li>Creating and updating tables based on the user-supplied routing. + * <li>Updating the schema and partition spec of tables based on the user-supplied specification. + * </ul> + */ +@Experimental +public class DynamicIcebergSink + implements Sink<DynamicRecordInternal>, + SupportsPreWriteTopology<DynamicRecordInternal>, + SupportsCommitter<DynamicCommittable>, + SupportsPreCommitTopology<DynamicWriteResult, DynamicCommittable>, + SupportsPostCommitTopology<DynamicCommittable> { + + private final CatalogLoader catalogLoader; + private final Map<String, String> snapshotProperties; + private final String uidPrefix; + private final String sinkId; + private final Map<String, String> writeProperties; + private final transient FlinkWriteConf flinkWriteConf; + private final FileFormat dataFileFormat; + private final long targetDataFileSize; + private final boolean overwriteMode; + private final int workerPoolSize; + private final int cacheMaximumSize; + + DynamicIcebergSink( + CatalogLoader catalogLoader, + Map<String, String> snapshotProperties, + String uidPrefix, + Map<String, String> writeProperties, + FlinkWriteConf flinkWriteConf, + int cacheMaximumSize) { + this.catalogLoader = catalogLoader; + this.snapshotProperties = snapshotProperties; + this.uidPrefix = uidPrefix; + this.writeProperties = writeProperties; + this.flinkWriteConf = flinkWriteConf; + this.dataFileFormat = flinkWriteConf.dataFileFormat(); + this.targetDataFileSize = flinkWriteConf.targetDataFileSize(); + this.overwriteMode = flinkWriteConf.overwriteMode(); + this.workerPoolSize = flinkWriteConf.workerPoolSize(); + this.cacheMaximumSize = cacheMaximumSize; + // We generate a random UUID every time when a sink is created. + // This is used to separate files generated by different sinks writing the same table. + // Also used to generate the aggregator operator name + this.sinkId = UUID.randomUUID().toString(); + } + + @Override + public SinkWriter<DynamicRecordInternal> createWriter(InitContext context) throws IOException { + return new DynamicWriter( + catalogLoader.loadCatalog(), + dataFileFormat, + targetDataFileSize, + writeProperties, + cacheMaximumSize, + new DynamicWriterMetrics(context.metricGroup()), + context.getTaskInfo().getIndexOfThisSubtask(), + context.getTaskInfo().getAttemptNumber()); + } + + @Override + public Committer<DynamicCommittable> createCommitter(CommitterInitContext context) { Review Comment: `CommitterInitContext` is used here as opposed to `InitContext` in Flink 2.0. -- This is an automated message from the Apache Git Service. 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