| /* |
| * 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.sdk.io.hdfs; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.fail; |
| |
| import java.net.URI; |
| import java.util.ServiceLoader; |
| import org.apache.beam.sdk.io.FileSystem; |
| import org.apache.beam.sdk.io.FileSystemRegistrar; |
| import org.apache.beam.sdk.options.PipelineOptionsFactory; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.ImmutableList; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.Iterables; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.Lists; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.TemporaryFolder; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests for {@link HadoopFileSystemRegistrar}. */ |
| @RunWith(JUnit4.class) |
| public class HadoopFileSystemRegistrarTest { |
| |
| @Rule public TemporaryFolder tmpFolder = new TemporaryFolder(); |
| private Configuration configuration; |
| private MiniDFSCluster hdfsCluster; |
| private URI hdfsClusterBaseUri; |
| |
| @Before |
| public void setUp() throws Exception { |
| configuration = new Configuration(); |
| configuration.set(MiniDFSCluster.HDFS_MINIDFS_BASEDIR, tmpFolder.getRoot().getAbsolutePath()); |
| MiniDFSCluster.Builder builder = new MiniDFSCluster.Builder(configuration); |
| hdfsCluster = builder.build(); |
| hdfsClusterBaseUri = new URI(configuration.get("fs.defaultFS") + "/"); |
| } |
| |
| @After |
| public void tearDown() { |
| hdfsCluster.shutdown(); |
| } |
| |
| @Test |
| public void testServiceLoader() { |
| HadoopFileSystemOptions options = PipelineOptionsFactory.as(HadoopFileSystemOptions.class); |
| options.setHdfsConfiguration(ImmutableList.of(configuration)); |
| for (FileSystemRegistrar registrar : |
| Lists.newArrayList(ServiceLoader.load(FileSystemRegistrar.class).iterator())) { |
| if (registrar instanceof HadoopFileSystemRegistrar) { |
| Iterable<FileSystem> fileSystems = registrar.fromOptions(options); |
| assertEquals( |
| hdfsClusterBaseUri.getScheme(), |
| ((HadoopFileSystem) Iterables.getOnlyElement(fileSystems)).getScheme()); |
| return; |
| } |
| } |
| fail("Expected to find " + HadoopFileSystemRegistrar.class); |
| } |
| } |