ambition119 commented on a change in pull request #3205: [pulsar-flink] Implements a batch program on Pulsar topic by writing Flink DataSet as Avro URL: https://github.com/apache/pulsar/pull/3205#discussion_r242144342
########## File path: pulsar-flink/src/main/java/org/apache/flink/batch/connectors/pulsar/serialization/AvroSerializationSchema.java ########## @@ -0,0 +1,61 @@ +/** + * 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.batch.connectors.pulsar.serialization; + +import org.apache.avro.io.DatumWriter; +import org.apache.avro.io.Encoder; +import org.apache.avro.io.EncoderFactory; +import org.apache.avro.specific.SpecificDatumWriter; +import org.apache.avro.specific.SpecificRecord; +import org.apache.flink.api.common.serialization.SerializationSchema; + +import java.io.ByteArrayOutputStream; +import java.io.IOException; + +/** + * Avro Serialization Schema to serialize Dataset records to Avro. + */ +public class AvroSerializationSchema<T extends SpecificRecord> implements SerializationSchema<T> { + + private static final long serialVersionUID = -6691140169413760919L; + + @Override + public byte[] serialize(T t) { + if (null == t){ + return null; + } + + // Writer to serialize Avro record into a byte array. + DatumWriter<T> writer = new SpecificDatumWriter<>(t.getSchema()); + // Output stream to serialize records into byte array. + ByteArrayOutputStream arrayOutputStream = new ByteArrayOutputStream(); + // Low-level class for serialization of Avro values. + Encoder encoder = EncoderFactory.get().binaryEncoder(arrayOutputStream, null); + arrayOutputStream.reset(); + try { + writer.write(t,encoder); + encoder.flush(); + }catch (IOException e){ Review comment: ok ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services