//Do Nothing
/// <exception cref="System.Exception"/>
public virtual void TestWebHdfsDoAs()
{
WebHdfsTestUtil.Log.Info("START: testWebHdfsDoAs()");
WebHdfsTestUtil.Log.Info("ugi.getShortUserName()=" + ugi.GetShortUserName());
WebHdfsFileSystem webhdfs = WebHdfsTestUtil.GetWebHdfsFileSystemAs(ugi, config, WebHdfsFileSystem
.Scheme);
Path root = new Path("/");
cluster.GetFileSystem().SetPermission(root, new FsPermission((short)0x1ff));
Whitebox.SetInternalState(webhdfs, "ugi", proxyUgi);
{
Path responsePath = webhdfs.GetHomeDirectory();
WebHdfsTestUtil.Log.Info("responsePath=" + responsePath);
NUnit.Framework.Assert.AreEqual(webhdfs.GetUri() + "/user/" + ProxyUser, responsePath
.ToString());
}
Path f = new Path("/testWebHdfsDoAs/a.txt");
{
FSDataOutputStream @out = webhdfs.Create(f);
@out.Write(Sharpen.Runtime.GetBytesForString("Hello, webhdfs user!"));
@out.Close();
FileStatus status = webhdfs.GetFileStatus(f);
WebHdfsTestUtil.Log.Info("status.getOwner()=" + status.GetOwner());
NUnit.Framework.Assert.AreEqual(ProxyUser, status.GetOwner());
}
{
FSDataOutputStream @out = webhdfs.Append(f);
@out.Write(Sharpen.Runtime.GetBytesForString("\nHello again!"));
@out.Close();
FileStatus status = webhdfs.GetFileStatus(f);
WebHdfsTestUtil.Log.Info("status.getOwner()=" + status.GetOwner());
WebHdfsTestUtil.Log.Info("status.getLen() =" + status.GetLen());
NUnit.Framework.Assert.AreEqual(ProxyUser, status.GetOwner());
}
}
public virtual void TestWebImageViewer()
{
WebImageViewer viewer = new WebImageViewer(NetUtils.CreateSocketAddr("localhost:0"
));
try
{
viewer.InitServer(originalFsimage.GetAbsolutePath());
int port = viewer.GetPort();
// create a WebHdfsFileSystem instance
URI uri = new URI("webhdfs://localhost:" + port.ToString());
Configuration conf = new Configuration();
WebHdfsFileSystem webhdfs = (WebHdfsFileSystem)FileSystem.Get(uri, conf);
// verify the number of directories
FileStatus[] statuses = webhdfs.ListStatus(new Path("/"));
NUnit.Framework.Assert.AreEqual(NumDirs + 3, statuses.Length);
// contains empty and xattr directory
// verify the number of files in the directory
statuses = webhdfs.ListStatus(new Path("/dir0"));
NUnit.Framework.Assert.AreEqual(FilesPerDir, statuses.Length);
// compare a file
FileStatus status = webhdfs.ListStatus(new Path("/dir0/file0"))[0];
FileStatus expected = writtenFiles["/dir0/file0"];
CompareFile(expected, status);
// LISTSTATUS operation to an empty directory
statuses = webhdfs.ListStatus(new Path("/emptydir"));
NUnit.Framework.Assert.AreEqual(0, statuses.Length);
// LISTSTATUS operation to a invalid path
Uri url = new Uri("http://localhost:" + port + "/webhdfs/v1/invalid/?op=LISTSTATUS"
);
VerifyHttpResponseCode(HttpURLConnection.HttpNotFound, url);
// LISTSTATUS operation to a invalid prefix
url = new Uri("http://localhost:" + port + "/foo");
VerifyHttpResponseCode(HttpURLConnection.HttpNotFound, url);
// GETFILESTATUS operation
status = webhdfs.GetFileStatus(new Path("/dir0/file0"));
CompareFile(expected, status);
// GETFILESTATUS operation to a invalid path
url = new Uri("http://localhost:" + port + "/webhdfs/v1/invalid/?op=GETFILESTATUS"
);
VerifyHttpResponseCode(HttpURLConnection.HttpNotFound, url);
// invalid operation
url = new Uri("http://localhost:" + port + "/webhdfs/v1/?op=INVALID");
VerifyHttpResponseCode(HttpURLConnection.HttpBadRequest, url);
// invalid method
url = new Uri("http://localhost:" + port + "/webhdfs/v1/?op=LISTSTATUS");
HttpURLConnection connection = (HttpURLConnection)url.OpenConnection();
connection.SetRequestMethod("POST");
connection.Connect();
NUnit.Framework.Assert.AreEqual(HttpURLConnection.HttpBadMethod, connection.GetResponseCode
());
}
finally
{
// shutdown the viewer
viewer.Close();
}
}
public virtual void TestAuditWebHdfsStat()
{
Path file = new Path(fnames[0]);
fs.SetPermission(file, new FsPermission((short)0x1a4));
fs.SetOwner(file, "root", null);
SetupAuditLogs();
WebHdfsFileSystem webfs = WebHdfsTestUtil.GetWebHdfsFileSystemAs(userGroupInfo, conf
, WebHdfsFileSystem.Scheme);
FileStatus st = webfs.GetFileStatus(file);
VerifyAuditLogs(true);
NUnit.Framework.Assert.IsTrue("failed to stat file", st != null && st.IsFile());
}
/// <exception cref="System.Exception"/>
private void ValidateLazyTokenFetch(Configuration clusterConf)
{
string testUser = "******";
UserGroupInformation ugi = UserGroupInformation.CreateUserForTesting(testUser, new
string[] { "supergroup" });
WebHdfsFileSystem fs = ugi.DoAs(new _PrivilegedExceptionAction_304(this, clusterConf
));
// verify token ops don't get a token
NUnit.Framework.Assert.IsNull(fs.GetRenewToken());
Org.Apache.Hadoop.Security.Token.Token <object> token = ((Org.Apache.Hadoop.Security.Token.Token
<DelegationTokenIdentifier>)fs.GetDelegationToken(null));
fs.RenewDelegationToken(token);
fs.CancelDelegationToken(token);
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).GetDelegationToken();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).ReplaceExpiredDelegationToken
();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).SetDelegationToken(Matchers.Any
<Org.Apache.Hadoop.Security.Token.Token>());
NUnit.Framework.Assert.IsNull(fs.GetRenewToken());
Org.Mockito.Mockito.Reset(fs);
// verify first non-token op gets a token
Path p = new Path("/f");
fs.Create(p, (short)1).Close();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Times(1)).GetDelegationToken();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).ReplaceExpiredDelegationToken
();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Times(1)).GetDelegationToken(Matchers.AnyString
());
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Times(1)).SetDelegationToken(Matchers.Any
<Org.Apache.Hadoop.Security.Token.Token>());
token = fs.GetRenewToken();
NUnit.Framework.Assert.IsNotNull(token);
NUnit.Framework.Assert.AreEqual(testUser, GetTokenOwner(token));
NUnit.Framework.Assert.AreEqual(fs.GetTokenKind(), token.GetKind());
Org.Mockito.Mockito.Reset(fs);
// verify prior token is reused
fs.GetFileStatus(p);
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Times(1)).GetDelegationToken();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).ReplaceExpiredDelegationToken
();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).GetDelegationToken(Matchers.AnyString
());
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).SetDelegationToken(Matchers.Any
<Org.Apache.Hadoop.Security.Token.Token>());
Org.Apache.Hadoop.Security.Token.Token <object> token2 = fs.GetRenewToken();
NUnit.Framework.Assert.IsNotNull(token2);
NUnit.Framework.Assert.AreEqual(fs.GetTokenKind(), token.GetKind());
NUnit.Framework.Assert.AreSame(token, token2);
Org.Mockito.Mockito.Reset(fs);
// verify renew of expired token fails w/o getting a new token
token = fs.GetRenewToken();
fs.CancelDelegationToken(token);
try
{
fs.RenewDelegationToken(token);
NUnit.Framework.Assert.Fail("should have failed");
}
catch (SecretManager.InvalidToken)
{
}
catch (Exception ex)
{
NUnit.Framework.Assert.Fail("wrong exception:" + ex);
}
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).GetDelegationToken();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).ReplaceExpiredDelegationToken
();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).GetDelegationToken(Matchers.AnyString
());
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).SetDelegationToken(Matchers.Any
<Org.Apache.Hadoop.Security.Token.Token>());
token2 = fs.GetRenewToken();
NUnit.Framework.Assert.IsNotNull(token2);
NUnit.Framework.Assert.AreEqual(fs.GetTokenKind(), token.GetKind());
NUnit.Framework.Assert.AreSame(token, token2);
Org.Mockito.Mockito.Reset(fs);
// verify cancel of expired token fails w/o getting a new token
try
{
fs.CancelDelegationToken(token);
NUnit.Framework.Assert.Fail("should have failed");
}
catch (SecretManager.InvalidToken)
{
}
catch (Exception ex)
{
NUnit.Framework.Assert.Fail("wrong exception:" + ex);
}
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).GetDelegationToken();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).ReplaceExpiredDelegationToken
();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).GetDelegationToken(Matchers.AnyString
());
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).SetDelegationToken(Matchers.Any
<Org.Apache.Hadoop.Security.Token.Token>());
token2 = fs.GetRenewToken();
NUnit.Framework.Assert.IsNotNull(token2);
NUnit.Framework.Assert.AreEqual(fs.GetTokenKind(), token.GetKind());
NUnit.Framework.Assert.AreSame(token, token2);
Org.Mockito.Mockito.Reset(fs);
// verify an expired token is replaced with a new token
fs.Open(p).Close();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Times(2)).GetDelegationToken();
// first bad, then good
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Times(1)).ReplaceExpiredDelegationToken
();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Times(1)).GetDelegationToken(null
);
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Times(1)).SetDelegationToken(Matchers.Any
<Org.Apache.Hadoop.Security.Token.Token>());
token2 = fs.GetRenewToken();
NUnit.Framework.Assert.IsNotNull(token2);
NUnit.Framework.Assert.AreEqual(fs.GetTokenKind(), token.GetKind());
NUnit.Framework.Assert.AreNotSame(token, token2);
NUnit.Framework.Assert.AreEqual(testUser, GetTokenOwner(token2));
Org.Mockito.Mockito.Reset(fs);
// verify with open because it's a little different in how it
// opens connections
fs.CancelDelegationToken(fs.GetRenewToken());
InputStream @is = fs.Open(p);
@is.Read();
@is.Close();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Times(2)).GetDelegationToken();
// first bad, then good
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Times(1)).ReplaceExpiredDelegationToken
();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Times(1)).GetDelegationToken(null
);
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Times(1)).SetDelegationToken(Matchers.Any
<Org.Apache.Hadoop.Security.Token.Token>());
token2 = fs.GetRenewToken();
NUnit.Framework.Assert.IsNotNull(token2);
NUnit.Framework.Assert.AreEqual(fs.GetTokenKind(), token.GetKind());
NUnit.Framework.Assert.AreNotSame(token, token2);
NUnit.Framework.Assert.AreEqual(testUser, GetTokenOwner(token2));
Org.Mockito.Mockito.Reset(fs);
// verify fs close cancels the token
fs.Close();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).GetDelegationToken();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).ReplaceExpiredDelegationToken
();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).GetDelegationToken(Matchers.AnyString
());
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).SetDelegationToken(Matchers.Any
<Org.Apache.Hadoop.Security.Token.Token>());
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Times(1)).CancelDelegationToken
(Matchers.Eq(token2));
// add a token to ugi for a new fs, verify it uses that token
token = ((Org.Apache.Hadoop.Security.Token.Token <DelegationTokenIdentifier>)fs.GetDelegationToken
(null));
ugi.AddToken(token);
fs = ugi.DoAs(new _PrivilegedExceptionAction_426(this, clusterConf));
NUnit.Framework.Assert.IsNull(fs.GetRenewToken());
fs.GetFileStatus(new Path("/"));
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Times(1)).GetDelegationToken();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).ReplaceExpiredDelegationToken
();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).GetDelegationToken(Matchers.AnyString
());
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Times(1)).SetDelegationToken(Matchers.Eq
(token));
token2 = fs.GetRenewToken();
NUnit.Framework.Assert.IsNotNull(token2);
NUnit.Framework.Assert.AreEqual(fs.GetTokenKind(), token.GetKind());
NUnit.Framework.Assert.AreSame(token, token2);
Org.Mockito.Mockito.Reset(fs);
// verify it reuses the prior ugi token
fs.GetFileStatus(new Path("/"));
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Times(1)).GetDelegationToken();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).ReplaceExpiredDelegationToken
();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).GetDelegationToken(Matchers.AnyString
());
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).SetDelegationToken(Matchers.Any
<Org.Apache.Hadoop.Security.Token.Token>());
token2 = fs.GetRenewToken();
NUnit.Framework.Assert.IsNotNull(token2);
NUnit.Framework.Assert.AreEqual(fs.GetTokenKind(), token.GetKind());
NUnit.Framework.Assert.AreSame(token, token2);
Org.Mockito.Mockito.Reset(fs);
// verify an expired ugi token is NOT replaced with a new token
fs.CancelDelegationToken(token);
for (int i = 0; i < 2; i++)
{
try
{
fs.GetFileStatus(new Path("/"));
NUnit.Framework.Assert.Fail("didn't fail");
}
catch (SecretManager.InvalidToken)
{
}
catch (Exception ex)
{
NUnit.Framework.Assert.Fail("wrong exception:" + ex);
}
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Times(1)).GetDelegationToken();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Times(1)).ReplaceExpiredDelegationToken
();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).GetDelegationToken(Matchers.AnyString
());
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).SetDelegationToken(Matchers.Any
<Org.Apache.Hadoop.Security.Token.Token>());
token2 = fs.GetRenewToken();
NUnit.Framework.Assert.IsNotNull(token2);
NUnit.Framework.Assert.AreEqual(fs.GetTokenKind(), token.GetKind());
NUnit.Framework.Assert.AreSame(token, token2);
Org.Mockito.Mockito.Reset(fs);
}
// verify fs close does NOT cancel the ugi token
fs.Close();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).GetDelegationToken();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).ReplaceExpiredDelegationToken
();
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).GetDelegationToken(Matchers.AnyString
());
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).SetDelegationToken(Matchers.Any
<Org.Apache.Hadoop.Security.Token.Token>());
Org.Mockito.Mockito.Verify(fs, Org.Mockito.Mockito.Never()).CancelDelegationToken
(Matchers.Any <Org.Apache.Hadoop.Security.Token.Token>());
}
/// <exception cref="System.IO.IOException"/>
public virtual void TestResponseCode()
{
WebHdfsFileSystem webhdfs = (WebHdfsFileSystem)fs;
Path root = new Path("/");
Path dir = new Path("/test/testUrl");
NUnit.Framework.Assert.IsTrue(webhdfs.Mkdirs(dir));
Path file = new Path("/test/file");
FSDataOutputStream @out = webhdfs.Create(file);
@out.Write(1);
@out.Close();
{
//test GETHOMEDIRECTORY
Uri url = webhdfs.ToUrl(GetOpParam.OP.Gethomedirectory, root);
HttpURLConnection conn = (HttpURLConnection)url.OpenConnection();
IDictionary <object, object> m = WebHdfsTestUtil.ConnectAndGetJson(conn, HttpServletResponse
.ScOk);
NUnit.Framework.Assert.AreEqual(WebHdfsFileSystem.GetHomeDirectoryString(ugi), m[
typeof(Path).Name]);
conn.Disconnect();
}
{
//test GETHOMEDIRECTORY with unauthorized doAs
Uri url = webhdfs.ToUrl(GetOpParam.OP.Gethomedirectory, root, new DoAsParam(ugi.GetShortUserName
() + "proxy"));
HttpURLConnection conn = (HttpURLConnection)url.OpenConnection();
conn.Connect();
NUnit.Framework.Assert.AreEqual(HttpServletResponse.ScForbidden, conn.GetResponseCode
());
conn.Disconnect();
}
{
//test set owner with empty parameters
Uri url = webhdfs.ToUrl(PutOpParam.OP.Setowner, dir);
HttpURLConnection conn = (HttpURLConnection)url.OpenConnection();
conn.Connect();
NUnit.Framework.Assert.AreEqual(HttpServletResponse.ScBadRequest, conn.GetResponseCode
());
conn.Disconnect();
}
{
//test set replication on a directory
HttpOpParam.OP op = PutOpParam.OP.Setreplication;
Uri url = webhdfs.ToUrl(op, dir);
HttpURLConnection conn = (HttpURLConnection)url.OpenConnection();
conn.SetRequestMethod(op.GetType().ToString());
conn.Connect();
NUnit.Framework.Assert.AreEqual(HttpServletResponse.ScOk, conn.GetResponseCode());
NUnit.Framework.Assert.IsFalse(webhdfs.SetReplication(dir, (short)1));
conn.Disconnect();
}
{
//test get file status for a non-exist file.
Path p = new Path(dir, "non-exist");
Uri url = webhdfs.ToUrl(GetOpParam.OP.Getfilestatus, p);
HttpURLConnection conn = (HttpURLConnection)url.OpenConnection();
conn.Connect();
NUnit.Framework.Assert.AreEqual(HttpServletResponse.ScNotFound, conn.GetResponseCode
());
conn.Disconnect();
}
{
//test set permission with empty parameters
HttpOpParam.OP op = PutOpParam.OP.Setpermission;
Uri url = webhdfs.ToUrl(op, dir);
HttpURLConnection conn = (HttpURLConnection)url.OpenConnection();
conn.SetRequestMethod(op.GetType().ToString());
conn.Connect();
NUnit.Framework.Assert.AreEqual(HttpServletResponse.ScOk, conn.GetResponseCode());
NUnit.Framework.Assert.AreEqual(0, conn.GetContentLength());
NUnit.Framework.Assert.AreEqual(MediaType.ApplicationOctetStream, conn.GetContentType
());
NUnit.Framework.Assert.AreEqual((short)0x1ed, webhdfs.GetFileStatus(dir).GetPermission
().ToShort());
conn.Disconnect();
}
{
//test append.
AppendTestUtil.TestAppend(fs, new Path(dir, "append"));
}
{
//test NamenodeAddressParam not set.
HttpOpParam.OP op = PutOpParam.OP.Create;
Uri url = webhdfs.ToUrl(op, dir);
HttpURLConnection conn = (HttpURLConnection)url.OpenConnection();
conn.SetRequestMethod(op.GetType().ToString());
conn.SetDoOutput(false);
conn.SetInstanceFollowRedirects(false);
conn.Connect();
string redirect = conn.GetHeaderField("Location");
conn.Disconnect();
//remove NamenodeAddressParam
WebHdfsFileSystem.Log.Info("redirect = " + redirect);
int i = redirect.IndexOf(NamenodeAddressParam.Name);
int j = redirect.IndexOf("&", i);
string modified = Sharpen.Runtime.Substring(redirect, 0, i - 1) + Sharpen.Runtime.Substring
(redirect, j);
WebHdfsFileSystem.Log.Info("modified = " + modified);
//connect to datanode
conn = (HttpURLConnection) new Uri(modified).OpenConnection();
conn.SetRequestMethod(op.GetType().ToString());
conn.SetDoOutput(op.GetDoOutput());
conn.Connect();
NUnit.Framework.Assert.AreEqual(HttpServletResponse.ScBadRequest, conn.GetResponseCode
());
}
{
//test jsonParse with non-json type.
HttpOpParam.OP op = GetOpParam.OP.Open;
Uri url = webhdfs.ToUrl(op, file);
HttpURLConnection conn = (HttpURLConnection)url.OpenConnection();
conn.SetRequestMethod(op.GetType().ToString());
conn.Connect();
try
{
WebHdfsFileSystem.JsonParse(conn, false);
Fail();
}
catch (IOException ioe)
{
WebHdfsFileSystem.Log.Info("GOOD", ioe);
}
conn.Disconnect();
}
{
//test create with path containing spaces
HttpOpParam.OP op = PutOpParam.OP.Create;
Path path = new Path("/test/path with spaces");
Uri url = webhdfs.ToUrl(op, path);
HttpURLConnection conn = (HttpURLConnection)url.OpenConnection();
conn.SetRequestMethod(op.GetType().ToString());
conn.SetDoOutput(false);
conn.SetInstanceFollowRedirects(false);
string redirect;
try
{
conn.Connect();
NUnit.Framework.Assert.AreEqual(HttpServletResponse.ScTemporaryRedirect, conn.GetResponseCode
());
redirect = conn.GetHeaderField("Location");
}
finally
{
conn.Disconnect();
}
conn = (HttpURLConnection) new Uri(redirect).OpenConnection();
conn.SetRequestMethod(op.GetType().ToString());
conn.SetDoOutput(op.GetDoOutput());
try
{
conn.Connect();
NUnit.Framework.Assert.AreEqual(HttpServletResponse.ScCreated, conn.GetResponseCode
());
}
finally
{
conn.Disconnect();
}
}
}
