| /* |
| * 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 |
| * |
| * https://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.avro; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import org.apache.avro.file.DataFileReader; |
| import org.apache.avro.file.DataFileWriter; |
| import org.apache.avro.file.SeekableFileInput; |
| import org.apache.avro.io.BinaryDecoder; |
| import org.apache.avro.io.BinaryEncoder; |
| import org.apache.avro.io.DecoderFactory; |
| import org.apache.avro.io.EncoderFactory; |
| import org.apache.avro.reflect.ReflectData; |
| import org.apache.avro.reflect.ReflectDatumReader; |
| import org.apache.avro.reflect.ReflectDatumWriter; |
| import org.junit.Assert; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.TemporaryFolder; |
| |
| public class TestDataFileReflect { |
| |
| @Rule |
| public TemporaryFolder DIR = new TemporaryFolder(); |
| |
| /* |
| * Test that using multiple schemas in a file works doing a union before writing |
| * any records. |
| */ |
| @Test |
| public void testMultiReflectWithUnionBeforeWriting() throws IOException { |
| File file = new File(DIR.getRoot().getPath(), "testMultiReflectWithUnionBeforeWriting.avro"); |
| CheckList<Object> check = new CheckList<>(); |
| try (FileOutputStream fos = new FileOutputStream(file)) { |
| |
| ReflectData reflectData = ReflectData.get(); |
| List<Schema> schemas = Arrays.asList(reflectData.getSchema(FooRecord.class), |
| reflectData.getSchema(BarRecord.class)); |
| Schema union = Schema.createUnion(schemas); |
| |
| try (DataFileWriter<Object> writer = new DataFileWriter<>(new ReflectDatumWriter<>(union))) { |
| writer.create(union, fos); |
| |
| // test writing to a file |
| write(writer, new BarRecord("One beer please"), check); |
| write(writer, new FooRecord(10), check); |
| write(writer, new BarRecord("Two beers please"), check); |
| write(writer, new FooRecord(20), check); |
| } |
| } |
| // new File(DIR.getRoot().getPath(), "test.avro"); |
| ReflectDatumReader<Object> din = new ReflectDatumReader<>(); |
| SeekableFileInput sin = new SeekableFileInput(file); |
| try (DataFileReader<Object> reader = new DataFileReader<>(sin, din)) { |
| int count = 0; |
| for (Object datum : reader) { |
| check.assertEquals(datum, count++); |
| } |
| Assert.assertEquals(count, check.size()); |
| } |
| } |
| |
| /* |
| * Test that writing a record with a field that is null. |
| */ |
| @Test |
| public void testNull() throws IOException { |
| File file = new File(DIR.getRoot().getPath(), "testNull.avro"); |
| CheckList<BarRecord> check = new CheckList<>(); |
| |
| try (FileOutputStream fos = new FileOutputStream(file)) { |
| ReflectData reflectData = ReflectData.AllowNull.get(); |
| Schema schema = reflectData.getSchema(BarRecord.class); |
| try (DataFileWriter<BarRecord> writer = new DataFileWriter<>( |
| new ReflectDatumWriter<>(BarRecord.class, reflectData))) { |
| writer.create(schema, fos); |
| // test writing to a file |
| write(writer, new BarRecord("One beer please"), check); |
| // null record here, fails when using the default reflectData instance |
| write(writer, new BarRecord(), check); |
| write(writer, new BarRecord("Two beers please"), check); |
| } |
| } |
| |
| ReflectDatumReader<BarRecord> din = new ReflectDatumReader<>(); |
| try (SeekableFileInput sin = new SeekableFileInput(file)) { |
| try (DataFileReader<BarRecord> reader = new DataFileReader<>(sin, din)) { |
| int count = 0; |
| for (BarRecord datum : reader) { |
| check.assertEquals(datum, count++); |
| } |
| Assert.assertEquals(count, check.size()); |
| } |
| } |
| } |
| |
| @Test |
| public void testNew() throws IOException { |
| ByteBuffer payload = ByteBuffer.allocateDirect(8 * 1024); |
| for (int i = 0; i < 500; i++) { |
| payload.putInt(1); |
| } |
| payload.flip(); |
| ByteBufferRecord bbr = new ByteBufferRecord(); |
| bbr.setPayload(payload); |
| bbr.setTp(TypeEnum.b); |
| |
| ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); |
| ReflectDatumWriter<ByteBufferRecord> writer = new ReflectDatumWriter<>(ByteBufferRecord.class); |
| BinaryEncoder avroEncoder = EncoderFactory.get().blockingBinaryEncoder(outputStream, null); |
| writer.write(bbr, avroEncoder); |
| avroEncoder.flush(); |
| |
| byte[] bytes = outputStream.toByteArray(); |
| |
| ByteArrayInputStream inputStream = new ByteArrayInputStream(bytes); |
| ReflectDatumReader<ByteBufferRecord> datumReader = new ReflectDatumReader<>(ByteBufferRecord.class); |
| BinaryDecoder avroDecoder = DecoderFactory.get().binaryDecoder(inputStream, null); |
| ByteBufferRecord deserialized = datumReader.read(null, avroDecoder); |
| |
| Assert.assertEquals(bbr, deserialized); |
| } |
| |
| /* |
| * Test that writing out and reading in a nested class works |
| */ |
| @Test |
| public void testNestedClass() throws IOException { |
| File file = new File(DIR.getRoot().getPath(), "testNull.avro"); |
| |
| CheckList<BazRecord> check = new CheckList<>(); |
| try (FileOutputStream fos = new FileOutputStream(file)) { |
| Schema schema = ReflectData.get().getSchema(BazRecord.class); |
| try (DataFileWriter<BazRecord> writer = new DataFileWriter<>(new ReflectDatumWriter<>(schema))) { |
| writer.create(schema, fos); |
| |
| // test writing to a file |
| write(writer, new BazRecord(10), check); |
| write(writer, new BazRecord(20), check); |
| } |
| } |
| |
| ReflectDatumReader<BazRecord> din = new ReflectDatumReader<>(); |
| try (SeekableFileInput sin = new SeekableFileInput(file)) { |
| try (DataFileReader<BazRecord> reader = new DataFileReader<>(sin, din)) { |
| int count = 0; |
| for (BazRecord datum : reader) { |
| check.assertEquals(datum, count++); |
| } |
| Assert.assertEquals(count, check.size()); |
| } |
| } |
| } |
| |
| private <T> void write(DataFileWriter<T> writer, T o, CheckList<T> l) throws IOException { |
| writer.append(l.addAndReturn(o)); |
| } |
| |
| @SuppressWarnings("serial") |
| private static class CheckList<T> extends ArrayList<T> { |
| T addAndReturn(T check) { |
| add(check); |
| return check; |
| } |
| |
| void assertEquals(Object toCheck, int i) { |
| Assert.assertNotNull(toCheck); |
| Object o = get(i); |
| Assert.assertNotNull(o); |
| Assert.assertEquals(toCheck, o); |
| } |
| } |
| |
| private static class BazRecord { |
| private int nbr; |
| |
| @SuppressWarnings("unused") |
| public BazRecord() { |
| } |
| |
| public BazRecord(int nbr) { |
| this.nbr = nbr; |
| } |
| |
| @Override |
| public boolean equals(Object that) { |
| if (that instanceof BazRecord) { |
| return this.nbr == ((BazRecord) that).nbr; |
| } |
| return false; |
| } |
| |
| @Override |
| public int hashCode() { |
| return nbr; |
| } |
| |
| @Override |
| public String toString() { |
| return BazRecord.class.getSimpleName() + "{cnt=" + nbr + "}"; |
| } |
| } |
| } |