@Override
public boolean rename(final Path src, final Path dst) throws IOException {
// passing resolveLastComponet as false to catch renaming a mount point to
// itself. We need to catch this as an internal operation and fail.
InodeTree.ResolveResult<FileSystem> resSrc = fsState.resolve(getUriPath(src), false);
if (resSrc.isInternalDir()) {
throw readOnlyMountTable("rename", src);
}
InodeTree.ResolveResult<FileSystem> resDst = fsState.resolve(getUriPath(dst), false);
if (resDst.isInternalDir()) {
throw readOnlyMountTable("rename", dst);
}
/**
* // Alternate 1: renames within same file system - valid but we disallow // Alternate 2: (as
* described in next para - valid but we have disallowed it // // Note we compare the URIs. the
* URIs include the link targets. // hence we allow renames across mount links as long as the
* mount links // point to the same target. if (!resSrc.targetFileSystem.getUri().equals(
* resDst.targetFileSystem.getUri())) { throw new IOException("Renames across Mount points not
* supported"); }
*/
//
// Alternate 3 : renames ONLY within the the same mount links.
//
if (resSrc.targetFileSystem != resDst.targetFileSystem) {
throw new IOException("Renames across Mount points not supported");
}
return resSrc.targetFileSystem.rename(resSrc.remainingPath, resDst.remainingPath);
}
@Test
public void getInodeByNonexistingNestedPathTest() throws Exception {
mThrown.expect(InvalidPathException.class);
mThrown.expectMessage("Path /nested/test/file does not exist");
mTree.createPath(NESTED_URI, sNestedDirectoryOptions);
mTree.getInodeByPath(NESTED_FILE_URI);
}
@Test
public void initializeRootTwiceTest() throws Exception {
Inode root = mTree.getInodeByPath(new TachyonURI("/"));
// initializeRoot call does nothing
mTree.initializeRoot(TEST_PERMISSION_STATUS);
Inode newRoot = mTree.getInodeByPath(new TachyonURI("/"));
Assert.assertEquals(root, newRoot);
}
@Test
public void createFileUnderFileTest() throws Exception {
mThrown.expect(InvalidPathException.class);
mThrown.expectMessage(
"Could not traverse to parent directory of path /nested/test/test."
+ " Component test is not a directory.");
mTree.createPath(NESTED_URI, sNestedFileOptions);
mTree.createPath(new TachyonURI("/nested/test/test"), sNestedFileOptions);
}
@Test
public void createFileTest() throws Exception {
// created nested file
mTree.createPath(NESTED_FILE_URI, sNestedFileOptions);
Inode nestedFile = mTree.getInodeByPath(NESTED_FILE_URI);
Assert.assertEquals("file", nestedFile.getName());
Assert.assertEquals(2, nestedFile.getParentId());
Assert.assertTrue(nestedFile.isFile());
Assert.assertEquals("user1", nestedFile.getUserName());
Assert.assertTrue(nestedFile.getGroupName().isEmpty());
Assert.assertEquals((short) 0644, nestedFile.getPermission());
}
@Test
public void getInodeChildrenRecursiveTest() throws Exception {
mTree.createPath(TEST_URI, sDirectoryOptions);
mTree.createPath(NESTED_URI, sNestedDirectoryOptions);
// add nested file
mTree.createPath(NESTED_FILE_URI, sNestedFileOptions);
// all inodes under root
List<Inode> inodes = mTree.getInodeChildrenRecursive((InodeDirectory) mTree.getInodeById(0));
// /test, /nested, /nested/test, /nested/test/file
Assert.assertEquals(4, inodes.size());
}
@Test
public void createExistingDirectoryTest() throws Exception {
// create directory
mTree.createPath(TEST_URI, sDirectoryOptions);
// create again with allowExists true
mTree.createPath(TEST_URI, new CreatePathOptions.Builder().setAllowExists(true).build());
// create again with allowExists false
mThrown.expect(FileAlreadyExistsException.class);
mThrown.expectMessage(ExceptionMessage.FILE_ALREADY_EXISTS.getMessage(TEST_URI));
mTree.createPath(TEST_URI, new CreatePathOptions.Builder().setAllowExists(false).build());
}
@Test
public void createPathTest() throws Exception {
// save the last mod time of the root
long lastModTime = mTree.getRoot().getLastModificationTimeMs();
// sleep to ensure a different last modification time
CommonUtils.sleepMs(10);
// create nested directory
InodeTree.CreatePathResult createResult = mTree.createPath(NESTED_URI, sNestedDirectoryOptions);
List<Inode> modified = createResult.getModified();
List<Inode> created = createResult.getCreated();
// 1 modified directory
Assert.assertEquals(1, modified.size());
Assert.assertEquals("", modified.get(0).getName());
Assert.assertNotEquals(lastModTime, modified.get(0).getLastModificationTimeMs());
// 2 created directories
Assert.assertEquals(2, created.size());
Assert.assertEquals("nested", created.get(0).getName());
Assert.assertEquals("test", created.get(1).getName());
// save the last mod time of 'test'
lastModTime = created.get(1).getLastModificationTimeMs();
// sleep to ensure a different last modification time
CommonUtils.sleepMs(10);
// creating the directory path again results in no new inodes.
try {
createResult = mTree.createPath(NESTED_URI, sNestedDirectoryOptions);
Assert.assertTrue("createPath should throw FileAlreadyExistsException", false);
} catch (FileAlreadyExistsException faee) {
Assert.assertEquals(
faee.getMessage(), ExceptionMessage.FILE_ALREADY_EXISTS.getMessage(NESTED_URI));
}
// create a file
CreatePathOptions options =
new CreatePathOptions.Builder(MasterContext.getConf())
.setBlockSizeBytes(Constants.KB)
.setRecursive(true)
.build();
createResult = mTree.createPath(NESTED_FILE_URI, options);
modified = createResult.getModified();
created = createResult.getCreated();
// test directory was modified
Assert.assertEquals(1, modified.size());
Assert.assertEquals("test", modified.get(0).getName());
Assert.assertNotEquals(lastModTime, modified.get(0).getLastModificationTimeMs());
// file was created
Assert.assertEquals(1, created.size());
Assert.assertEquals("file", created.get(0).getName());
}
@Test
public void getInodeByNonexistingPathTest() throws Exception {
mThrown.expect(InvalidPathException.class);
mThrown.expectMessage("Path /test does not exist");
mTree.getInodeByPath(TEST_URI);
}
@Test
public void createFileUnderNonexistingDirTest() throws Exception {
mThrown.expect(InvalidPathException.class);
mThrown.expectMessage("File /nested/test creation failed. Component 1(nested) does not exist");
mTree.createPath(NESTED_URI, sFileOptions);
}
@Test
public void createRootPathTest() throws Exception {
mThrown.expect(FileAlreadyExistsException.class);
mThrown.expectMessage("/");
mTree.createPath(new TachyonURI("/"), sFileOptions);
}
@Test
public void createFileUnderPinnedDirectoryTest() throws Exception {
// create nested directory
InodeTree.CreatePathResult createResult = mTree.createPath(NESTED_URI, sNestedDirectoryOptions);
List<Inode> created = createResult.getCreated();
Inode nested = created.get(created.size() - 1);
// pin nested folder
mTree.setPinned(nested, true);
// create nested file under pinned folder
mTree.createPath(NESTED_FILE_URI, sNestedFileOptions);
// the nested file is pinned
Assert.assertEquals(1, mTree.getPinIdSet().size());
}
@Override
public BlockLocation[] getFileBlockLocations(FileStatus fs, long start, long len)
throws IOException {
final InodeTree.ResolveResult<FileSystem> res = fsState.resolve(getUriPath(fs.getPath()), true);
return res.targetFileSystem.getFileBlockLocations(
new ViewFsFileStatus(fs, res.remainingPath), start, len);
}
@Test
public void getInodeByInvalidIdTest() throws Exception {
mThrown.expect(FileDoesNotExistException.class);
mThrown.expectMessage("Inode id 1 does not exist");
mTree.getInodeById(1);
}
@Override
public void setWriteChecksum(final boolean writeChecksum) {
List<InodeTree.MountPoint<FileSystem>> mountPoints = fsState.getMountPoints();
for (InodeTree.MountPoint<FileSystem> mount : mountPoints) {
mount.target.targetFileSystem.setWriteChecksum(writeChecksum);
}
}
@Test
public void createFileTwiceTest() throws Exception {
mThrown.expect(FileAlreadyExistsException.class);
mThrown.expectMessage("/nested/test");
mTree.createPath(NESTED_URI, sNestedFileOptions);
mTree.createPath(NESTED_URI, sNestedFileOptions);
}
// verify that the tree has the given children
private static void verifyChildrenNames(
InodeTree tree, InodeDirectory root, Set<String> childNames) throws Exception {
List<Inode> children = tree.getInodeChildrenRecursive(root);
Assert.assertEquals(childNames.size(), children.size());
for (Inode child : children) {
Assert.assertTrue(childNames.contains(child.getName()));
}
}
// helper for verifying that correct objects were journaled to the output stream
private static void verifyJournal(InodeTree root, List<Inode> journaled) throws Exception {
JournalOutputStream mockOutputStream = Mockito.mock(JournalOutputStream.class);
root.streamToJournalCheckpoint(mockOutputStream);
for (Inode node : journaled) {
Mockito.verify(mockOutputStream).writeEntry(node.toJournalEntry());
}
Mockito.verifyNoMoreInteractions(mockOutputStream);
}
@Test
public void createFileWithNegativeBlockSizeTest() throws Exception {
mThrown.expect(BlockInfoException.class);
mThrown.expectMessage("Invalid block size -1");
CreatePathOptions options =
new CreatePathOptions.Builder(MasterContext.getConf()).setBlockSizeBytes(-1).build();
mTree.createPath(TEST_URI, options);
}
@Override
public short getDefaultReplication(Path f) {
try {
InodeTree.ResolveResult<FileSystem> res = fsState.resolve(getUriPath(f), true);
return res.targetFileSystem.getDefaultReplication(res.remainingPath);
} catch (FileNotFoundException e) {
throw new NotInMountpointException(f, "getDefaultReplication");
}
}
@Override
public Path resolvePath(final Path f) throws IOException {
final InodeTree.ResolveResult<FileSystem> res;
res = fsState.resolve(getUriPath(f), true);
if (res.isInternalDir()) {
return f;
}
return res.targetFileSystem.resolvePath(res.remainingPath);
}
@Override
public boolean delete(final Path f, final boolean recursive)
throws AccessControlException, FileNotFoundException, IOException {
InodeTree.ResolveResult<FileSystem> res = fsState.resolve(getUriPath(f), true);
// If internal dir or target is a mount link (ie remainingPath is Slash)
if (res.isInternalDir() || res.remainingPath == InodeTree.SlashPath) {
throw readOnlyMountTable("delete", f);
}
return res.targetFileSystem.delete(res.remainingPath, recursive);
}
@Override
public FileSystem[] getChildFileSystems() {
List<InodeTree.MountPoint<FileSystem>> mountPoints = fsState.getMountPoints();
Set<FileSystem> children = new HashSet<FileSystem>();
for (InodeTree.MountPoint<FileSystem> mountPoint : mountPoints) {
FileSystem targetFs = mountPoint.target.targetFileSystem;
children.addAll(Arrays.asList(targetFs.getChildFileSystems()));
}
return children.toArray(new FileSystem[] {});
}
@Test
public void streamToJournalCheckpointTest() throws Exception {
InodeDirectory root = mTree.getRoot();
// test root
verifyJournal(mTree, Lists.<Inode>newArrayList(root));
// test nested URI
mTree.createPath(NESTED_FILE_URI, sNestedFileOptions);
InodeDirectory nested = (InodeDirectory) root.getChild("nested");
InodeDirectory test = (InodeDirectory) nested.getChild("test");
Inode file = test.getChild("file");
verifyJournal(mTree, Lists.newArrayList(root, nested, test, file));
// add a sibling of test and verify journaling is in correct order (breadth first)
mTree.createPath(new TachyonURI("/nested/test1/file1"), sNestedFileOptions);
InodeDirectory test1 = (InodeDirectory) nested.getChild("test1");
Inode file1 = test1.getChild("file1");
verifyJournal(mTree, Lists.newArrayList(root, nested, test, test1, file, file1));
}
public MountPoint[] getMountPoints() {
List<InodeTree.MountPoint<FileSystem>> mountPoints = fsState.getMountPoints();
MountPoint[] result = new MountPoint[mountPoints.size()];
for (int i = 0; i < mountPoints.size(); ++i) {
result[i] =
new MountPoint(
new Path(mountPoints.get(i).src), mountPoints.get(i).target.targetDirLinkList);
}
return result;
}
@Before
public void before() throws Exception {
Journal blockJournal = new ReadWriteJournal(mTestFolder.newFolder().getAbsolutePath());
BlockMaster blockMaster = new BlockMaster(blockJournal);
InodeDirectoryIdGenerator directoryIdGenerator = new InodeDirectoryIdGenerator(blockMaster);
MountTable mountTable = new MountTable();
mTree = new InodeTree(blockMaster, directoryIdGenerator, mountTable);
blockMaster.start(true);
mTree.initializeRoot(TEST_PERMISSION_STATUS);
}
@Test
public void createDirectoryTest() throws Exception {
// create directory
mTree.createPath(TEST_URI, sDirectoryOptions);
Inode test = mTree.getInodeByPath(TEST_URI);
Assert.assertEquals(TEST_PATH, test.getName());
Assert.assertTrue(test.isDirectory());
Assert.assertEquals("user1", test.getUserName());
Assert.assertTrue(test.getGroupName().isEmpty());
Assert.assertEquals((short) 0755, test.getPermission());
// create nested directory
mTree.createPath(NESTED_URI, sNestedDirectoryOptions);
Inode nested = mTree.getInodeByPath(NESTED_URI);
Assert.assertEquals(TEST_PATH, nested.getName());
Assert.assertEquals(2, nested.getParentId());
Assert.assertTrue(test.isDirectory());
Assert.assertEquals("user1", test.getUserName());
Assert.assertTrue(test.getGroupName().isEmpty());
Assert.assertEquals((short) 0755, test.getPermission());
}
@Test
public void deleteNonexistingInodeTest() throws Exception {
mThrown.expect(FileDoesNotExistException.class);
mThrown.expectMessage("Inode id 1 does not exist");
Inode testFile =
new InodeFile.Builder()
.setName("testFile1")
.setId(1)
.setParentId(1)
.setPermissionStatus(TEST_PERMISSION_STATUS)
.build();
mTree.deleteInode(testFile);
}
@Override
public Path getHomeDirectory() {
if (homeDir == null) {
String base = fsState.getHomeDirPrefixValue();
if (base == null) {
base = "/user";
}
homeDir =
(base.equals("/")
? this.makeQualified(new Path(base + ugi.getShortUserName()))
: this.makeQualified(new Path(base + "/" + ugi.getShortUserName())));
}
return homeDir;
}
@Override
public FileStatus getFileStatus(final Path f)
throws AccessControlException, FileNotFoundException, IOException {
InodeTree.ResolveResult<FileSystem> res = fsState.resolve(getUriPath(f), true);
// FileStatus#getPath is a fully qualified path relative to the root of
// target file system.
// We need to change it to viewfs URI - relative to root of mount table.
// The implementors of RawLocalFileSystem were trying to be very smart.
// They implement FileStatus#getOwener lazily -- the object
// returned is really a RawLocalFileSystem that expect the
// FileStatus#getPath to be unchanged so that it can get owner when needed.
// Hence we need to interpose a new ViewFileSystemFileStatus that
// works around.
FileStatus status = res.targetFileSystem.getFileStatus(res.remainingPath);
return new ViewFsFileStatus(status, this.makeQualified(f));
}