From 0d92f54e82f1759f012981e92cbe129b3d9f7179 Mon Sep 17 00:00:00 2001 From: Robert Joseph Evans Date: Mon, 26 Nov 2012 17:45:57 +0000 Subject: [PATCH] HADOOP-8992. Enhance unit-test coverage of class HarFileSystem (Ivan A. Veselovsky via bobby) git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1413743 13f79535-47bb-0310-9956-ffa450edef68 --- .../hadoop-common/CHANGES.txt | 3 + .../org/apache/hadoop/fs/HarFileSystem.java | 23 +- .../hadoop/fs/TestHarFileSystemBasics.java | 297 ++++++++++++++++++ 3 files changed, 307 insertions(+), 16 deletions(-) create mode 100644 hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/TestHarFileSystemBasics.java diff --git a/hadoop-common-project/hadoop-common/CHANGES.txt b/hadoop-common-project/hadoop-common/CHANGES.txt index 2a6db063bd..0e3561a52d 100644 --- a/hadoop-common-project/hadoop-common/CHANGES.txt +++ b/hadoop-common-project/hadoop-common/CHANGES.txt @@ -1152,6 +1152,9 @@ Release 0.23.6 - UNRELEASED HADOOP-9072. Hadoop-Common-0.23-Build Fails to build in Jenkins (Robert Parker via tgraves) + HADOOP-8992. Enhance unit-test coverage of class HarFileSystem (Ivan A. + Veselovsky via bobby) + Release 0.23.5 - UNRELEASED INCOMPATIBLE CHANGES diff --git a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/HarFileSystem.java b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/HarFileSystem.java index 9504e1fda6..1f5a2a1261 100644 --- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/HarFileSystem.java +++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/HarFileSystem.java @@ -584,13 +584,6 @@ public boolean isDir() { public String getName() { return name; } - - public List getChildren() { - return children; - } - public String getFileName() { - return name; - } public String getPartName() { return partName; } @@ -662,15 +655,6 @@ public FSDataInputStream open(Path f, int bufferSize) throws IOException { hstatus.getStartIndex(), hstatus.getLength(), bufferSize); } - /* - * create throws an exception in Har filesystem. - * The archive once created cannot be changed. - */ - public FSDataOutputStream create(Path f, int bufferSize) - throws IOException { - throw new IOException("Har: Create not allowed"); - } - @Override public FSDataOutputStream create(Path f, FsPermission permission, @@ -1106,4 +1090,11 @@ private void parseMetaData() throws IOException { } } } + + /* + * testing purposes only: + */ + HarMetaData getMetadata() { + return metadata; + } } diff --git a/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/TestHarFileSystemBasics.java b/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/TestHarFileSystemBasics.java new file mode 100644 index 0000000000..c11afbadd2 --- /dev/null +++ b/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/TestHarFileSystemBasics.java @@ -0,0 +1,297 @@ +/** + * 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; + +import static org.junit.Assert.assertEquals; +import static org.junit.Assert.assertTrue; +import static org.junit.Assert.assertFalse; + +import java.io.File; +import java.io.IOException; +import java.net.URI; + +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.fs.permission.FsPermission; +import org.junit.After; +import org.junit.Assert; +import org.junit.Before; +import org.junit.Test; + +/** + * This test class checks basic operations with {@link HarFileSystem} including + * various initialization cases, getters, and modification methods. + * + * NB: to run this test from an IDE make sure the folder + * "hadoop-common-project/hadoop-common/src/main/resources/" is added as a + * source path. This will allow the system to pick up the "core-default.xml" and + * "META-INF/services/..." resources from the class-path in the runtime. + */ +public class TestHarFileSystemBasics { + + private static final String ROOT_PATH = System.getProperty("test.build.data", + "build/test/data"); + private static final Path rootPath = new Path( + new File(ROOT_PATH).getAbsolutePath() + "/localfs"); + // NB: .har suffix is necessary + private static final Path harPath = new Path(rootPath, "path1/path2/my.har"); + + private FileSystem localFileSystem; + private HarFileSystem harFileSystem; + private Configuration conf; + + /* + * creates and returns fully initialized HarFileSystem + */ + private HarFileSystem createHarFileSysten(final Configuration conf) + throws Exception { + localFileSystem = FileSystem.getLocal(conf); + localFileSystem.initialize(new URI("file:///"), conf); + localFileSystem.mkdirs(rootPath); + localFileSystem.mkdirs(harPath); + final Path indexPath = new Path(harPath, "_index"); + final Path masterIndexPath = new Path(harPath, "_masterindex"); + localFileSystem.createNewFile(indexPath); + assertTrue(localFileSystem.exists(indexPath)); + localFileSystem.createNewFile(masterIndexPath); + assertTrue(localFileSystem.exists(masterIndexPath)); + + writeVersionToMasterIndexImpl(HarFileSystem.VERSION); + + final HarFileSystem harFileSystem = new HarFileSystem(localFileSystem); + final URI uri = new URI("har://" + harPath.toString()); + harFileSystem.initialize(uri, conf); + return harFileSystem; + } + + private void writeVersionToMasterIndexImpl(int version) throws IOException { + final Path masterIndexPath = new Path(harPath, "_masterindex"); + // write Har version into the master index: + final FSDataOutputStream fsdos = localFileSystem.create(masterIndexPath); + try { + String versionString = version + "\n"; + fsdos.write(versionString.getBytes("UTF-8")); + fsdos.flush(); + } finally { + fsdos.close(); + } + } + + @Before + public void before() throws Exception { + final File rootDirIoFile = new File(rootPath.toUri().getPath()); + rootDirIoFile.mkdirs(); + if (!rootDirIoFile.exists()) { + throw new IOException("Failed to create temp directory [" + + rootDirIoFile.getAbsolutePath() + "]"); + } + // create Har to test: + conf = new Configuration(); + harFileSystem = createHarFileSysten(conf); + } + + @After + public void after() throws Exception { + // close Har FS: + final FileSystem harFS = harFileSystem; + if (harFS != null) { + harFS.close(); + harFileSystem = null; + } + // cleanup: delete all the temporary files: + final File rootDirIoFile = new File(rootPath.toUri().getPath()); + if (rootDirIoFile.exists()) { + FileUtil.fullyDelete(rootDirIoFile); + } + if (rootDirIoFile.exists()) { + throw new IOException("Failed to delete temp directory [" + + rootDirIoFile.getAbsolutePath() + "]"); + } + } + + // ======== Positive tests: + + @Test + public void testPositiveHarFileSystemBasics() throws Exception { + // check Har version: + assertEquals(HarFileSystem.VERSION, harFileSystem.getHarVersion()); + + // check Har URI: + final URI harUri = harFileSystem.getUri(); + assertEquals(harPath.toUri().getPath(), harUri.getPath()); + assertEquals("har", harUri.getScheme()); + + // check Har home path: + final Path homePath = harFileSystem.getHomeDirectory(); + assertEquals(harPath.toUri().getPath(), homePath.toUri().getPath()); + + // check working directory: + final Path workDirPath0 = harFileSystem.getWorkingDirectory(); + assertEquals(homePath, workDirPath0); + + // check that its impossible to reset the working directory + // (#setWorkingDirectory should have no effect): + harFileSystem.setWorkingDirectory(new Path("/foo/bar")); + assertEquals(workDirPath0, harFileSystem.getWorkingDirectory()); + } + + @Test + public void testPositiveNewHarFsOnTheSameUnderlyingFs() throws Exception { + // Init 2nd har file system on the same underlying FS, so the + // metadata gets reused: + final HarFileSystem hfs = new HarFileSystem(localFileSystem); + final URI uri = new URI("har://" + harPath.toString()); + hfs.initialize(uri, new Configuration()); + // the metadata should be reused from cache: + assertTrue(hfs.getMetadata() == harFileSystem.getMetadata()); + } + + @Test + public void testPositiveInitWithoutUnderlyingFS() throws Exception { + // Init HarFS with no constructor arg, so that the underlying FS object + // is created on demand or got from cache in #initialize() method. + final HarFileSystem hfs = new HarFileSystem(); + final URI uri = new URI("har://" + harPath.toString()); + hfs.initialize(uri, new Configuration()); + } + + // ========== Negative: + + @Test + public void testNegativeInitWithoutIndex() throws Exception { + // delete the index file: + final Path indexPath = new Path(harPath, "_index"); + localFileSystem.delete(indexPath, false); + // now init the HarFs: + final HarFileSystem hfs = new HarFileSystem(localFileSystem); + final URI uri = new URI("har://" + harPath.toString()); + try { + hfs.initialize(uri, new Configuration()); + Assert.fail("Exception expected."); + } catch (IOException ioe) { + // ok, expected. + } + } + + @Test + public void testNegativeGetHarVersionOnNotInitializedFS() throws Exception { + final HarFileSystem hfs = new HarFileSystem(localFileSystem); + try { + int version = hfs.getHarVersion(); + Assert.fail("Exception expected, but got a Har version " + version + "."); + } catch (IOException ioe) { + // ok, expected. + } + } + + @Test + public void testNegativeInitWithAnUnsupportedVersion() throws Exception { + // NB: should wait at least 1 second to ensure the timestamp of the master + // index will change upon the writing, because Linux seems to update the + // file modification + // time with 1 second accuracy: + Thread.sleep(1000); + // write an unsupported version: + writeVersionToMasterIndexImpl(7777); + // init the Har: + final HarFileSystem hfs = new HarFileSystem(localFileSystem); + + // the metadata should *not* be reused from cache: + assertFalse(hfs.getMetadata() == harFileSystem.getMetadata()); + + final URI uri = new URI("har://" + harPath.toString()); + try { + hfs.initialize(uri, new Configuration()); + Assert.fail("IOException expected."); + } catch (IOException ioe) { + // ok, expected. + } + } + + @Test + public void testNegativeHarFsModifications() throws Exception { + // all the modification methods of HarFS must lead to IOE. + final Path fooPath = new Path(rootPath, "foo/bar"); + localFileSystem.createNewFile(fooPath); + try { + harFileSystem.create(fooPath, new FsPermission("+rwx"), true, 1024, + (short) 88, 1024, null); + Assert.fail("IOException expected."); + } catch (IOException ioe) { + // ok, expected. + } + + try { + harFileSystem.setReplication(fooPath, (short) 55); + Assert.fail("IOException expected."); + } catch (IOException ioe) { + // ok, expected. + } + + try { + harFileSystem.delete(fooPath, true); + Assert.fail("IOException expected."); + } catch (IOException ioe) { + // ok, expected. + } + + try { + harFileSystem.mkdirs(fooPath, new FsPermission("+rwx")); + Assert.fail("IOException expected."); + } catch (IOException ioe) { + // ok, expected. + } + + final Path indexPath = new Path(harPath, "_index"); + try { + harFileSystem.copyFromLocalFile(false, indexPath, fooPath); + Assert.fail("IOException expected."); + } catch (IOException ioe) { + // ok, expected. + } + + try { + harFileSystem.startLocalOutput(fooPath, indexPath); + Assert.fail("IOException expected."); + } catch (IOException ioe) { + // ok, expected. + } + + try { + harFileSystem.completeLocalOutput(fooPath, indexPath); + Assert.fail("IOException expected."); + } catch (IOException ioe) { + // ok, expected. + } + + try { + harFileSystem.setOwner(fooPath, "user", "group"); + Assert.fail("IOException expected."); + } catch (IOException ioe) { + // ok, expected. + } + + try { + harFileSystem.setPermission(fooPath, new FsPermission("+x")); + Assert.fail("IOException expected."); + } catch (IOException ioe) { + // ok, expected. + } + } + +}