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ASF GitHub Bot commented on FLINK-3871: --------------------------------------- Github user mushketyk commented on a diff in the pull request: https://github.com/apache/flink/pull/2762#discussion_r90504858 --- Diff: flink-streaming-connectors/flink-connector-kafka-base/src/main/java/org/apache/flink/streaming/connectors/kafka/KafkaAvroTableSource.java --- @@ -0,0 +1,84 @@ +/* + * 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.kafka; + +import org.apache.flink.api.common.typeinfo.TypeInformation; +import org.apache.flink.api.table.sources.StreamTableSource; +import org.apache.flink.streaming.connectors.kafka.internals.TypeUtil; +import org.apache.flink.streaming.util.serialization.AvroRowDeserializationSchema; +import org.apache.flink.streaming.util.serialization.DeserializationSchema; + +import java.util.Properties; + +/** + * A version-agnostic Kafka Avro {@link StreamTableSource}. + * + * <p>The version-specific Kafka consumers need to extend this class and + * override {@link #getKafkaConsumer(String, Properties, DeserializationSchema)}}. + * + * <p>The field names are used to parse the Avro file and so are the types. + */ +public abstract class KafkaAvroTableSource extends KafkaTableSource { + + /** + * Creates a generic Kafka Avro {@link StreamTableSource}. + * + * @param topic Kafka topic to consume. + * @param properties Properties for the Kafka consumer. + * @param fieldNames Row field names. + * @param fieldTypes Row field types. + */ + KafkaAvroTableSource( + String topic, + Properties properties, + String[] fieldNames, + Class<?>[] fieldTypes) { + + super(topic, properties, createDeserializationSchema(fieldTypes), fieldNames, fieldTypes); + } + + /** + * Creates a generic Kafka Avro {@link StreamTableSource}. + * + * @param topic Kafka topic to consume. + * @param properties Properties for the Kafka consumer. + * @param fieldNames Row field names. + * @param fieldTypes Row field types. + */ + KafkaAvroTableSource( + String topic, + Properties properties, + String[] fieldNames, + TypeInformation<?>[] fieldTypes) { + + super(topic, properties, createDeserializationSchema(fieldTypes), fieldNames, fieldTypes); + } + + private static AvroRowDeserializationSchema createDeserializationSchema( + TypeInformation<?>[] fieldTypes) { + + return new AvroRowDeserializationSchema(new String[]{"f1", "f2", "f3"}, fieldTypes); --- End diff -- Sorry, accidentally typed it. Will fix. > Add Kafka TableSource with Avro serialization > --------------------------------------------- > > Key: FLINK-3871 > URL: https://issues.apache.org/jira/browse/FLINK-3871 > Project: Flink > Issue Type: New Feature > Components: Table API & SQL > Reporter: Fabian Hueske > > Add a Kafka TableSource which supports Avro serialized data. -- This message was sent by Atlassian JIRA (v6.3.4#6332)