| /* |
| * 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.beam.runners.spark.io; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.util.List; |
| import org.apache.avro.Schema; |
| import org.apache.avro.file.DataFileReader; |
| import org.apache.avro.file.DataFileWriter; |
| import org.apache.avro.generic.GenericData; |
| import org.apache.avro.generic.GenericDatumReader; |
| import org.apache.avro.generic.GenericDatumWriter; |
| import org.apache.avro.generic.GenericRecord; |
| import org.apache.beam.sdk.io.AvroIO; |
| import org.apache.beam.sdk.testing.TestPipeline; |
| import org.apache.beam.sdk.values.PCollection; |
| import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.Lists; |
| import org.apache.beam.vendor.guava.v20_0.com.google.common.io.Resources; |
| import org.junit.Before; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.TemporaryFolder; |
| |
| /** Avro pipeline test. */ |
| public class AvroPipelineTest { |
| |
| private File inputFile; |
| private File outputFile; |
| |
| @Rule public final TemporaryFolder tmpDir = new TemporaryFolder(); |
| |
| @Rule public final TestPipeline pipeline = TestPipeline.create(); |
| |
| @Before |
| public void setUp() throws IOException { |
| inputFile = tmpDir.newFile("test.avro"); |
| outputFile = new File(tmpDir.getRoot(), "out.avro"); |
| } |
| |
| @Test |
| public void testGeneric() throws Exception { |
| Schema schema = new Schema.Parser().parse(Resources.getResource("person.avsc").openStream()); |
| GenericRecord savedRecord = new GenericData.Record(schema); |
| savedRecord.put("name", "John Doe"); |
| savedRecord.put("age", 42); |
| savedRecord.put("siblingnames", Lists.newArrayList("Jimmy", "Jane")); |
| populateGenericFile(Lists.newArrayList(savedRecord), schema); |
| |
| PCollection<GenericRecord> input = |
| pipeline.apply(AvroIO.readGenericRecords(schema).from(inputFile.getAbsolutePath())); |
| input.apply(AvroIO.writeGenericRecords(schema).to(outputFile.getAbsolutePath())); |
| pipeline.run(); |
| |
| List<GenericRecord> records = readGenericFile(); |
| assertEquals(Lists.newArrayList(savedRecord), records); |
| } |
| |
| private void populateGenericFile(List<GenericRecord> genericRecords, Schema schema) |
| throws IOException { |
| FileOutputStream outputStream = new FileOutputStream(this.inputFile); |
| GenericDatumWriter<GenericRecord> genericDatumWriter = new GenericDatumWriter<>(schema); |
| |
| try (DataFileWriter<GenericRecord> dataFileWriter = new DataFileWriter<>(genericDatumWriter)) { |
| dataFileWriter.create(schema, outputStream); |
| for (GenericRecord record : genericRecords) { |
| dataFileWriter.append(record); |
| } |
| } |
| outputStream.close(); |
| } |
| |
| private List<GenericRecord> readGenericFile() throws IOException { |
| List<GenericRecord> records = Lists.newArrayList(); |
| GenericDatumReader<GenericRecord> genericDatumReader = new GenericDatumReader<>(); |
| try (DataFileReader<GenericRecord> dataFileReader = |
| new DataFileReader<>(new File(outputFile + "-00000-of-00001"), genericDatumReader)) { |
| for (GenericRecord record : dataFileReader) { |
| records.add(record); |
| } |
| } |
| return records; |
| } |
| } |