dannycranmer commented on code in PR #16: URL: https://github.com/apache/flink-connector-aws/pull/16#discussion_r1017185669
########## flink-connector-dynamodb/src/main/java/org/apache/flink/connector/dynamodb/sink/DynamoDBEnhancedElementConverter.java: ########## @@ -0,0 +1,71 @@ +/* + * 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.connector.dynamodb.sink; + +import org.apache.flink.api.connector.sink2.SinkWriter; +import org.apache.flink.connector.base.sink.writer.ElementConverter; + +import software.amazon.awssdk.enhanced.dynamodb.mapper.BeanTableSchema; +import software.amazon.awssdk.enhanced.dynamodb.mapper.annotations.DynamoDbBean; + +/** + * A generic {@link ElementConverter} that uses the dynamodb-enhanced client to build a {@link + * DynamoDbWriteRequest} from a POJO annotated with {@link DynamoDbBean}. + * + * @param <InputT> The + */ +public class DynamoDBEnhancedElementConverter<InputT> + implements ElementConverter<InputT, DynamoDbWriteRequest> { + + private static final long serialVersionUID = 1L; + + private final Class<InputT> recordType; + private final boolean ignoreNulls; + private transient BeanTableSchema<InputT> tableSchema; + + public DynamoDBEnhancedElementConverter(final Class<InputT> recordType) { + this(recordType, false); + } + + public DynamoDBEnhancedElementConverter( + final Class<InputT> recordType, final boolean ignoreNulls) { + this.recordType = recordType; + this.ignoreNulls = ignoreNulls; + + // Attempt to create a table schema now to bubble up errors before starting job + createTableSchema(recordType); + } + + @Override + public DynamoDbWriteRequest apply(InputT element, SinkWriter.Context context) { + if (tableSchema == null) { + // We have to lazily initialise this because BeanTableSchema is not serializable and Review Comment: Raised https://issues.apache.org/jira/browse/FLINK-29938 -- 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]
