| /** |
| * 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.crunch.io; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import java.io.IOException; |
| |
| import com.google.common.collect.ImmutableList; |
| import org.apache.avro.Schema; |
| import org.apache.avro.SchemaBuilder; |
| import org.apache.avro.file.DataFileWriter; |
| import org.apache.avro.generic.GenericData; |
| import org.apache.avro.generic.GenericDatumWriter; |
| import org.apache.avro.generic.GenericRecord; |
| import org.apache.avro.io.DatumWriter; |
| import org.apache.crunch.Source; |
| import org.apache.crunch.types.avro.Avros; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.io.LongWritable; |
| import org.apache.hadoop.io.Text; |
| import org.apache.hadoop.mapreduce.lib.input.TextInputFormat; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.TemporaryFolder; |
| |
| public class FromTest { |
| |
| @Rule |
| public TemporaryFolder tmp = new TemporaryFolder(); |
| |
| @Test(expected=IllegalArgumentException.class) |
| public void testAvroFile_EmptyPathListNotAllowed() { |
| From.avroFile(ImmutableList.<Path>of()); |
| } |
| |
| @Test(expected=IllegalArgumentException.class) |
| public void testTextFile_EmptyPathListNotAllowed() { |
| From.textFile(ImmutableList.<Path>of()); |
| } |
| |
| @Test(expected=IllegalArgumentException.class) |
| public void testFormattedFile_EmptyPathListNotAllowed() { |
| From.formattedFile(ImmutableList.<Path>of(), TextInputFormat.class, LongWritable.class, Text.class); |
| } |
| |
| @Test(expected=IllegalArgumentException.class) |
| public void testSequenceFile_EmptyPathListNotAllowed() { |
| From.sequenceFile(ImmutableList.<Path>of(), LongWritable.class, Text.class); |
| } |
| |
| @Test |
| public void testAvroFile_GlobWithSchemaInferenceIsSupported() throws IOException { |
| Schema schema = SchemaBuilder.record("record") |
| .fields() |
| .endRecord(); |
| |
| DatumWriter<GenericRecord> datumWriter = new GenericDatumWriter<>(schema); |
| try (DataFileWriter<GenericRecord> writer = new DataFileWriter<>(datumWriter)) { |
| writer.create(schema, tmp.newFile("1")); |
| writer.append(new GenericData.Record(schema)); |
| } |
| |
| Source<GenericData.Record> source = From.avroFile(new Path(tmp.getRoot().toString() + "/*")); |
| |
| assertEquals(source.getType(), Avros.generics(schema)); |
| } |
| |
| @Test |
| public void testAvroFile_DirectoryWithSchemaInferenceIsSupported() throws IOException { |
| Schema schema = SchemaBuilder.record("record") |
| .fields() |
| .endRecord(); |
| |
| DatumWriter<GenericRecord> datumWriter = new GenericDatumWriter<>(schema); |
| try (DataFileWriter<GenericRecord> writer = new DataFileWriter<>(datumWriter)) { |
| writer.create(schema, tmp.newFile("1")); |
| writer.append(new GenericData.Record(schema)); |
| } |
| |
| Source<GenericData.Record> source = From.avroFile(new Path(tmp.getRoot().toString())); |
| |
| assertEquals(source.getType(), Avros.generics(schema)); |
| } |
| |
| @Test |
| public void testAvroFile_FileWithSchemaInferenceIsSupported() throws IOException { |
| Schema schema = SchemaBuilder.record("record") |
| .fields() |
| .endRecord(); |
| |
| DatumWriter<GenericRecord> datumWriter = new GenericDatumWriter<>(schema); |
| try (DataFileWriter<GenericRecord> writer = new DataFileWriter<>(datumWriter)) { |
| writer.create(schema, tmp.newFile("1")); |
| writer.append(new GenericData.Record(schema)); |
| } |
| |
| Source<GenericData.Record> source = From.avroFile(new Path(tmp.getRoot().toString(), "1")); |
| |
| assertEquals(source.getType(), Avros.generics(schema)); |
| } |
| } |