/**
* 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.hdfs;
import java.io.DataOutputStream;
import java.io.IOException;
import java.security.PrivilegedExceptionAction;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.protocol.ClientProtocol;
import org.apache.hadoop.security.UserGroupInformation;
import org.junit.Assert;
import org.junit.Test;
import org.mockito.Mockito;
public class TestLease {
static boolean hasLease(MiniDFSCluster cluster, Path src) {
return cluster.getNameNode().getNamesystem().leaseManager
.getLeaseByPath(src.toString()) != null;
}
final Path dir = new Path("/test/lease/");
@Test
public void testLease() throws Exception {
Configuration conf = new Configuration();
MiniDFSCluster cluster = new MiniDFSCluster(conf, 2, true, null);
try {
FileSystem fs = cluster.getFileSystem();
Assert.assertTrue(fs.mkdirs(dir));
Path a = new Path(dir, "a");
Path b = new Path(dir, "b");
DataOutputStream a_out = fs.create(a);
a_out.writeBytes("something");
Assert.assertTrue(hasLease(cluster, a));
Assert.assertTrue(!hasLease(cluster, b));
DataOutputStream b_out = fs.create(b);
b_out.writeBytes("something");
Assert.assertTrue(hasLease(cluster, a));
Assert.assertTrue(hasLease(cluster, b));
a_out.close();
b_out.close();
Assert.assertTrue(!hasLease(cluster, a));
Assert.assertTrue(!hasLease(cluster, b));
fs.delete(dir, true);
} finally {
if (cluster != null) {cluster.shutdown();}
}
}
@Test
public void testFactory() throws Exception {
final String[] groups = new String[]{"supergroup"};
final UserGroupInformation[] ugi = new UserGroupInformation[3];
for(int i = 0; i < ugi.length; i++) {
ugi[i] = UserGroupInformation.createUserForTesting("user" + i, groups);
}
final Configuration conf = new Configuration();
final DFSClient c1 = createDFSClientAs(ugi[0], conf);
FSDataOutputStream out1 = createFsOut(c1, "/out1");
final DFSClient c2 = createDFSClientAs(ugi[0], conf);
FSDataOutputStream out2 = createFsOut(c2, "/out2");
Assert.assertEquals(c1.getLeaseRenewer(), c2.getLeaseRenewer());
final DFSClient c3 = createDFSClientAs(ugi[1], conf);
FSDataOutputStream out3 = createFsOut(c3, "/out3");
Assert.assertTrue(c1.getLeaseRenewer() != c3.getLeaseRenewer());
final DFSClient c4 = createDFSClientAs(ugi[1], conf);
FSDataOutputStream out4 = createFsOut(c4, "/out4");
Assert.assertEquals(c3.getLeaseRenewer(), c4.getLeaseRenewer());
final DFSClient c5 = createDFSClientAs(ugi[2], conf);
FSDataOutputStream out5 = createFsOut(c5, "/out5");
Assert.assertTrue(c1.getLeaseRenewer() != c5.getLeaseRenewer());
Assert.assertTrue(c3.getLeaseRenewer() != c5.getLeaseRenewer());
}
private FSDataOutputStream createFsOut(DFSClient dfs, String path)
throws IOException {
return new FSDataOutputStream(dfs.create(path, true), null);
}
static final ClientProtocol mcp = Mockito.mock(ClientProtocol.class);
static public DFSClient createDFSClientAs(UserGroupInformation ugi,
final Configuration conf) throws Exception {
return ugi.doAs(new PrivilegedExceptionAction<DFSClient>() {
@Override
public DFSClient run() throws Exception {
return new DFSClient(null, mcp, conf, null);
}
});
}
}