| /** |
| * 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.hadoop.fs.viewfs; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.FileSystemTestHelper; |
| import org.apache.hadoop.fs.FsConstants; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.fs.viewfs.ConfigUtil; |
| |
| |
| /** |
| * This class is for setup and teardown for viewFileSystem so that |
| * it can be tested via the standard FileSystem tests. |
| * |
| * If tests launched via ant (build.xml) the test root is absolute path |
| * If tests launched via eclipse, the test root is |
| * is a test dir below the working directory. (see FileSystemTestHelper). |
| * Since viewFs has no built-in wd, its wd is /user/<username> |
| * (or /User/<username> on mac) |
| * |
| * We set a viewFileSystems with mount point for |
| * /<firstComponent>" pointing to the target fs's testdir |
| */ |
| public class ViewFileSystemTestSetup { |
| |
| /** |
| * |
| * @param fsTarget - the target fs of the view fs. |
| * @return return the ViewFS File context to be used for tests |
| * @throws Exception |
| */ |
| static public FileSystem setupForViewFs(Configuration conf, FileSystem fsTarget) throws Exception { |
| /** |
| * create the test root on local_fs - the mount table will point here |
| */ |
| Path targetOfTests = FileSystemTestHelper.getTestRootPath(fsTarget); |
| // In case previous test was killed before cleanup |
| fsTarget.delete(targetOfTests, true); |
| |
| fsTarget.mkdirs(targetOfTests); |
| |
| |
| // Now set up a link from viewfs to targetfs for the first component of |
| // path of testdir. For example, if testdir is /user/<userid>/xx then |
| // a link from /user to targetfs://user. |
| |
| String testDir = FileSystemTestHelper.getTestRootPath(fsTarget).toUri().getPath(); |
| int indexOf2ndSlash = testDir.indexOf('/', 1); |
| String testDirFirstComponent = testDir.substring(0, indexOf2ndSlash); |
| |
| |
| ConfigUtil.addLink(conf, testDirFirstComponent, |
| fsTarget.makeQualified(new Path(testDirFirstComponent)).toUri()); |
| |
| FileSystem fsView = FileSystem.get(FsConstants.VIEWFS_URI, conf); |
| //System.out.println("SRCOfTests = "+ getTestRootPath(fs, "test")); |
| //System.out.println("TargetOfTests = "+ targetOfTests.toUri()); |
| return fsView; |
| } |
| |
| /** |
| * |
| * delete the test directory in the target fs |
| */ |
| static public void tearDownForViewFs(FileSystem fsTarget) throws Exception { |
| Path targetOfTests = FileSystemTestHelper.getTestRootPath(fsTarget); |
| fsTarget.delete(targetOfTests, true); |
| } |
| |
| public static Configuration configWithViewfsScheme() { |
| Configuration conf = new Configuration(); |
| conf.set("fs.viewfs.impl", ViewFileSystem.class.getName()); |
| return conf; |
| } |
| } |