lvyanquan commented on code in PR #3904: URL: https://github.com/apache/flink-cdc/pull/3904#discussion_r2034717354
########## flink-cdc-connect/flink-cdc-pipeline-connectors/flink-cdc-pipeline-connector-iceberg/src/main/java/org/apache/flink/cdc/connectors/iceberg/sink/v2/IcebergWriter.java: ########## @@ -0,0 +1,182 @@ +/* + * 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.cdc.connectors.iceberg.sink.v2; + +import org.apache.flink.api.common.eventtime.Watermark; +import org.apache.flink.api.connector.sink2.CommittingSinkWriter; +import org.apache.flink.api.connector.sink2.SinkWriter; +import org.apache.flink.cdc.common.event.DataChangeEvent; +import org.apache.flink.cdc.common.event.Event; +import org.apache.flink.cdc.common.event.SchemaChangeEvent; +import org.apache.flink.cdc.common.event.TableId; +import org.apache.flink.cdc.common.schema.Schema; +import org.apache.flink.cdc.common.utils.SchemaUtils; +import org.apache.flink.table.data.RowData; +import org.apache.flink.table.types.logical.RowType; + +import org.apache.hadoop.conf.Configuration; +import org.apache.iceberg.CatalogUtil; +import org.apache.iceberg.FileFormat; +import org.apache.iceberg.Table; +import org.apache.iceberg.catalog.Catalog; +import org.apache.iceberg.catalog.TableIdentifier; +import org.apache.iceberg.flink.FlinkSchemaUtil; +import org.apache.iceberg.flink.sink.RowDataTaskWriterFactory; +import org.apache.iceberg.io.TaskWriter; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.io.IOException; +import java.time.ZoneId; +import java.util.ArrayList; +import java.util.Collection; +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +/** A {@link SinkWriter} for Apache Iceberg. */ +public class IcebergWriter implements CommittingSinkWriter<Event, WriteResultWrapper> { + + private static final Logger LOGGER = LoggerFactory.getLogger(IcebergWriter.class); + + public static final String DEFAULT_FILE_FORMAT = "parquet"; + + public static final long DEFAULT_MAX_FILE_SIZE = 256 * 1024 * 1024; + + Map<TableId, RowDataTaskWriterFactory> writerFactoryMap; + + Map<TableId, TaskWriter<RowData>> writerMap; + + Map<TableId, TableSchemaWrapper> schemaMap; + + List<WriteResultWrapper> temporaryWriteResult; + + private final Catalog catalog; + + private final int taskId; + + private final int attemptId; + + private final ZoneId zoneId; + + public IcebergWriter( + Map<String, String> catalogOptions, int taskId, int attemptId, ZoneId zoneId) { + catalog = + CatalogUtil.buildIcebergCatalog( + "cdc-iceberg-writer-catalog", catalogOptions, new Configuration()); + writerFactoryMap = new HashMap<>(); + writerMap = new HashMap<>(); + schemaMap = new HashMap<>(); + temporaryWriteResult = new ArrayList<>(); + this.taskId = taskId; + this.attemptId = attemptId; + this.zoneId = zoneId; + } + + @Override + public Collection<WriteResultWrapper> prepareCommit() throws IOException, InterruptedException { + List<WriteResultWrapper> list = new ArrayList<>(); + list.addAll(temporaryWriteResult); + list.addAll(getWriteResult()); + temporaryWriteResult.clear(); + return list; + } + + private RowDataTaskWriterFactory getRowDataTaskWriterFactory(TableId tableId) { + Table table = catalog.loadTable(TableIdentifier.parse(tableId.identifier())); + RowType rowType = FlinkSchemaUtil.convert(table.schema()); + RowDataTaskWriterFactory rowDataTaskWriterFactory = + new RowDataTaskWriterFactory( + table, + rowType, + DEFAULT_MAX_FILE_SIZE, + FileFormat.fromString(DEFAULT_FILE_FORMAT), + new HashMap<>(), + new ArrayList<>(table.schema().identifierFieldIds()), + true); + rowDataTaskWriterFactory.initialize(taskId, attemptId); + return rowDataTaskWriterFactory; + } + + @Override + public void write(Event event, Context context) throws IOException, InterruptedException { + if (event instanceof DataChangeEvent) { + DataChangeEvent dataChangeEvent = (DataChangeEvent) event; + TableId tableId = dataChangeEvent.tableId(); + writerFactoryMap.computeIfAbsent(tableId, this::getRowDataTaskWriterFactory); + TaskWriter<RowData> writer = + writerMap.computeIfAbsent( + tableId, tableId1 -> writerFactoryMap.get(tableId1).create()); + writer.write(schemaMap.get(tableId).convertEventToRowData(dataChangeEvent)); + } else { + SchemaChangeEvent schemaChangeEvent = (SchemaChangeEvent) event; + TableId tableId = schemaChangeEvent.tableId(); + TableSchemaWrapper tableSchemaWrapper = schemaMap.get(tableId); + + Schema newSchema = + tableSchemaWrapper != null + ? SchemaUtils.applySchemaChangeEvent( + tableSchemaWrapper.getSchema(), schemaChangeEvent) + : SchemaUtils.applySchemaChangeEvent(null, schemaChangeEvent); + schemaMap.put(tableId, new TableSchemaWrapper(newSchema, zoneId)); + } + } + + @Override + public void flush(boolean flush) throws IOException { + // Notice: flush method may be called many times during one checkpoint. + temporaryWriteResult.addAll(getWriteResult()); + } + + private List<WriteResultWrapper> getWriteResult() throws IOException { + List<WriteResultWrapper> writeResults = new ArrayList<>(); + for (Map.Entry<TableId, TaskWriter<RowData>> entry : writerMap.entrySet()) { + WriteResultWrapper writeResultWrapper = + new WriteResultWrapper(entry.getValue().complete(), entry.getKey()); + writeResults.add(writeResultWrapper); + LOGGER.info(writeResultWrapper.buildDescription()); + } + writerMap.clear(); + writerFactoryMap.clear(); + return writeResults; + } + + @Override + public void writeWatermark(Watermark watermark) {} + + @Override + public void close() throws Exception { + if (schemaMap != null) { + schemaMap.clear(); + schemaMap = null; Review Comment: It won't be reused. -- This is an automated message from the Apache Git Service. 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