/// <summary>Two buffer dirs.</summary>
/// <remarks>
/// Two buffer dirs. The first dir does not exist & is on a read-only disk;
/// The second dir exists & is RW
/// getLocalPathForWrite with checkAccess set to false should create a parent
/// directory. With checkAccess true, the directory should not be created.
/// </remarks>
/// <exception cref="System.Exception"/>
/// <exception cref="System.IO.IOException"/>
public virtual void TestLocalPathForWriteDirCreation()
{
string dir0 = BuildBufferDir(Root, 0);
string dir1 = BuildBufferDir(Root, 1);
try
{
conf.Set(Context, dir0 + "," + dir1);
Assert.True(localFs.Mkdirs(new Path(dir1)));
BufferRoot.SetReadOnly();
Path p1 = dirAllocator.GetLocalPathForWrite("p1/x", SmallFileSize, conf);
Assert.True(localFs.GetFileStatus(p1.GetParent()).IsDirectory()
);
Path p2 = dirAllocator.GetLocalPathForWrite("p2/x", SmallFileSize, conf, false);
try
{
localFs.GetFileStatus(p2.GetParent());
}
catch (Exception e)
{
Assert.Equal(e.GetType(), typeof(FileNotFoundException));
}
}
finally
{
Shell.ExecCommand(Shell.GetSetPermissionCommand("u+w", false, BufferDirRoot));
RmBufferDirs();
}
}
/// <exception cref="System.IO.IOException"/>
private void CheckFileCorruption(LocalFileSystem fileSys, Path file, Path fileToCorrupt
)
{
// corrupt the file
RandomAccessFile @out = new RandomAccessFile(new FilePath(fileToCorrupt.ToString(
)), "rw");
byte[] buf = new byte[(int)fileSys.GetFileStatus(file).GetLen()];
int corruptFileLen = (int)fileSys.GetFileStatus(fileToCorrupt).GetLen();
NUnit.Framework.Assert.IsTrue(buf.Length >= corruptFileLen);
rand.NextBytes(buf);
@out.Seek(corruptFileLen / 2);
@out.Write(buf, 0, corruptFileLen / 4);
@out.Close();
bool gotException = false;
InputStream @in = fileSys.Open(file);
try
{
IOUtils.ReadFully(@in, buf, 0, buf.Length);
}
catch (ChecksumException)
{
gotException = true;
}
NUnit.Framework.Assert.IsTrue(gotException);
@in.Close();
}
/// <exception cref="System.Exception"/>
private void _mkdirs(bool exists, FsPermission before, FsPermission after)
{
FilePath localDir = MockitoMaker.Make(MockitoMaker.Stub <FilePath>().Returning(exists
).from.Exists());
Org.Mockito.Mockito.When(localDir.Mkdir()).ThenReturn(true);
Path dir = Org.Mockito.Mockito.Mock <Path>();
// use default stubs
LocalFileSystem fs = MockitoMaker.Make(MockitoMaker.Stub <LocalFileSystem>().Returning
(localDir).from.PathToFile(dir));
FileStatus stat = MockitoMaker.Make(MockitoMaker.Stub <FileStatus>().Returning(after
).from.GetPermission());
Org.Mockito.Mockito.When(fs.GetFileStatus(dir)).ThenReturn(stat);
try
{
DiskChecker.MkdirsWithExistsAndPermissionCheck(fs, dir, before);
if (!exists)
{
Org.Mockito.Mockito.Verify(fs).SetPermission(dir, before);
}
else
{
Org.Mockito.Mockito.Verify(fs).GetFileStatus(dir);
Org.Mockito.Mockito.Verify(stat).GetPermission();
}
}
catch (DiskChecker.DiskErrorException e)
{
if (before != after)
{
Assert.True(e.Message.StartsWith("Incorrect permission"));
}
}
}
/// <exception cref="System.IO.IOException"/>
private string ReadFile(string @out)
{
Path path = new Path(@out);
FileStatus stat = lfs.GetFileStatus(path);
FSDataInputStream @in = lfs.Open(path);
byte[] buffer = new byte[(int)stat.GetLen()];
@in.ReadFully(buffer);
@in.Close();
lfs.Delete(path, false);
return(Runtime.GetStringForBytes(buffer));
}
public virtual void TestCorruptedChecksum()
{
Path testPath = new Path(TestRootDir, "testCorruptChecksum");
Path checksumPath = localFs.GetChecksumFile(testPath);
// write a file to generate checksum
FSDataOutputStream @out = localFs.Create(testPath, true);
@out.Write(Runtime.GetBytesForString("testing 1 2 3"));
@out.Close();
Assert.True(localFs.Exists(checksumPath));
FileStatus stat = localFs.GetFileStatus(checksumPath);
// alter file directly so checksum is invalid
@out = localFs.GetRawFileSystem().Create(testPath, true);
@out.Write(Runtime.GetBytesForString("testing stale checksum"));
@out.Close();
Assert.True(localFs.Exists(checksumPath));
// checksum didn't change on disk
Assert.Equal(stat, localFs.GetFileStatus(checksumPath));
Exception e = null;
try
{
localFs.SetVerifyChecksum(true);
FileSystemTestHelper.ReadFile(localFs, testPath, 1024);
}
catch (ChecksumException ce)
{
e = ce;
}
finally
{
NUnit.Framework.Assert.IsNotNull("got checksum error", e);
}
localFs.SetVerifyChecksum(false);
string str = FileSystemTestHelper.ReadFile(localFs, testPath, 1024);
Assert.Equal("testing stale checksum", str);
}
/// <summary>Create the directory or check permissions if it already exists.</summary>
/// <remarks>
/// Create the directory or check permissions if it already exists.
/// The semantics of mkdirsWithExistsAndPermissionCheck method is different
/// from the mkdirs method provided in the Sun's java.io.File class in the
/// following way:
/// While creating the non-existent parent directories, this method checks for
/// the existence of those directories if the mkdir fails at any point (since
/// that directory might have just been created by some other process).
/// If both mkdir() and the exists() check fails for any seemingly
/// non-existent directory, then we signal an error; Sun's mkdir would signal
/// an error (return false) if a directory it is attempting to create already
/// exists or the mkdir fails.
/// </remarks>
/// <param name="localFS">local filesystem</param>
/// <param name="dir">directory to be created or checked</param>
/// <param name="expected">expected permission</param>
/// <exception cref="System.IO.IOException"/>
public static void MkdirsWithExistsAndPermissionCheck(LocalFileSystem localFS, Path
dir, FsPermission expected)
{
FilePath directory = localFS.PathToFile(dir);
bool created = false;
if (!directory.Exists())
{
created = MkdirsWithExistsCheck(directory);
}
if (created || !localFS.GetFileStatus(dir).GetPermission().Equals(expected))
{
localFS.SetPermission(dir, expected);
}
}
/// <exception cref="System.IO.IOException"/>
public virtual void TestPathEscapes()
{
Path path = new Path(TestRootDir, "foo%bar");
FileSystemTestHelper.WriteFile(fileSys, path, 1);
FileStatus status = fileSys.GetFileStatus(path);
Assert.Equal(path.MakeQualified(fileSys), status.GetPath());
CleanupFile(fileSys, path);
}
/// <exception cref="System.IO.IOException"/>
private void TestFileCorruption(LocalFileSystem fileSys)
{
// create a file and verify that checksum corruption results in
// a checksum exception on LocalFS
string dir = PathUtils.GetTestDirName(GetType());
Path file = new Path(dir + "/corruption-test.dat");
Path crcFile = new Path(dir + "/.corruption-test.dat.crc");
WriteFile(fileSys, file);
int fileLen = (int)fileSys.GetFileStatus(file).GetLen();
byte[] buf = new byte[fileLen];
InputStream @in = fileSys.Open(file);
IOUtils.ReadFully(@in, buf, 0, buf.Length);
@in.Close();
// check .crc corruption
CheckFileCorruption(fileSys, file, crcFile);
fileSys.Delete(file, true);
WriteFile(fileSys, file);
// check data corrutpion
CheckFileCorruption(fileSys, file, file);
fileSys.Delete(file, true);
}
/// <exception cref="System.IO.IOException"/>
internal virtual FsPermission GetPermission(LocalFileSystem fs, Path p)
{
return(fs.GetFileStatus(p).GetPermission());
}
/// <exception cref="System.IO.IOException"/>
internal virtual string GetGroup(LocalFileSystem fs, Path p)
{
return(fs.GetFileStatus(p).GetGroup());
}
