/**
* 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.viewfs;
import com.google.common.collect.Lists;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.FileSystemTestHelper;
import org.apache.hadoop.fs.FsConstants;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.MiniDFSNNTopology;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import java.io.IOException;
import java.util.List;
import static org.apache.hadoop.fs.permission.AclEntryScope.ACCESS;
import static org.apache.hadoop.fs.permission.AclEntryScope.DEFAULT;
import static org.apache.hadoop.fs.permission.AclEntryType.*;
import static org.apache.hadoop.fs.permission.FsAction.*;
import static org.apache.hadoop.hdfs.server.namenode.AclTestHelpers.aclEntry;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
/**
* Verify ACL through ViewFileSystem functionality.
*/
public class TestViewFileSystemWithAcls {
private static MiniDFSCluster cluster;
private static Configuration clusterConf = new Configuration();
private static FileSystem fHdfs;
private static FileSystem fHdfs2;
private FileSystem fsView;
private Configuration fsViewConf;
private FileSystem fsTarget, fsTarget2;
private Path targetTestRoot, targetTestRoot2, mountOnNn1, mountOnNn2;
private FileSystemTestHelper fileSystemTestHelper =
new FileSystemTestHelper("/tmp/TestViewFileSystemWithAcls");
@BeforeClass
public static void clusterSetupAtBeginning() throws IOException {
clusterConf.setBoolean(DFSConfigKeys.DFS_NAMENODE_ACLS_ENABLED_KEY, true);
cluster = new MiniDFSCluster.Builder(clusterConf)
.nnTopology(MiniDFSNNTopology.simpleFederatedTopology(2))
.numDataNodes(2)
.build();
cluster.waitClusterUp();
fHdfs = cluster.getFileSystem(0);
fHdfs2 = cluster.getFileSystem(1);
}
@AfterClass
public static void ClusterShutdownAtEnd() throws Exception {
cluster.shutdown();
}
@Before
public void setUp() throws Exception {
fsTarget = fHdfs;
fsTarget2 = fHdfs2;
targetTestRoot = fileSystemTestHelper.getAbsoluteTestRootPath(fsTarget);
targetTestRoot2 = fileSystemTestHelper.getAbsoluteTestRootPath(fsTarget2);
fsTarget.delete(targetTestRoot, true);
fsTarget2.delete(targetTestRoot2, true);
fsTarget.mkdirs(targetTestRoot);
fsTarget2.mkdirs(targetTestRoot2);
fsViewConf = ViewFileSystemTestSetup.createConfig();
setupMountPoints();
fsView = FileSystem.get(FsConstants.VIEWFS_URI, fsViewConf);
}
private void setupMountPoints() {
mountOnNn1 = new Path("/mountOnNn1");
mountOnNn2 = new Path("/mountOnNn2");
ConfigUtil.addLink(fsViewConf, mountOnNn1.toString(), targetTestRoot.toUri());
ConfigUtil.addLink(fsViewConf, mountOnNn2.toString(), targetTestRoot2.toUri());
}
@After
public void tearDown() throws Exception {
fsTarget.delete(fileSystemTestHelper.getTestRootPath(fsTarget), true);
fsTarget2.delete(fileSystemTestHelper.getTestRootPath(fsTarget2), true);
}
/**
* Verify a ViewFs wrapped over multiple federated NameNodes will
* dispatch the ACL operations to the correct NameNode.
*/
@Test
public void testAclOnMountEntry() throws Exception {
// Set ACLs on the first namespace and verify they are correct
List<AclEntry> aclSpec = Lists.newArrayList(
aclEntry(ACCESS, USER, READ_WRITE),
aclEntry(ACCESS, USER, "foo", READ),
aclEntry(ACCESS, GROUP, READ),
aclEntry(ACCESS, OTHER, NONE));
fsView.setAcl(mountOnNn1, aclSpec);
AclEntry[] expected = new AclEntry[] {
aclEntry(ACCESS, USER, "foo", READ),
aclEntry(ACCESS, GROUP, READ) };
assertArrayEquals(expected, aclEntryArray(fsView.getAclStatus(mountOnNn1)));
// Double-check by getting ACL status using FileSystem
// instead of ViewFs
assertArrayEquals(expected, aclEntryArray(fHdfs.getAclStatus(targetTestRoot)));
// Modify the ACL entries on the first namespace
aclSpec = Lists.newArrayList(
aclEntry(DEFAULT, USER, "foo", READ));
fsView.modifyAclEntries(mountOnNn1, aclSpec);
expected = new AclEntry[] {
aclEntry(ACCESS, USER, "foo", READ),
aclEntry(ACCESS, GROUP, READ),
aclEntry(DEFAULT, USER, READ_WRITE),
aclEntry(DEFAULT, USER, "foo", READ),
aclEntry(DEFAULT, GROUP, READ),
aclEntry(DEFAULT, MASK, READ),
aclEntry(DEFAULT, OTHER, NONE) };
assertArrayEquals(expected, aclEntryArray(fsView.getAclStatus(mountOnNn1)));
fsView.removeDefaultAcl(mountOnNn1);
expected = new AclEntry[] {
aclEntry(ACCESS, USER, "foo", READ),
aclEntry(ACCESS, GROUP, READ) };
assertArrayEquals(expected, aclEntryArray(fsView.getAclStatus(mountOnNn1)));
assertArrayEquals(expected, aclEntryArray(fHdfs.getAclStatus(targetTestRoot)));
// Paranoid check: verify the other namespace does not
// have ACLs set on the same path.
assertEquals(0, fsView.getAclStatus(mountOnNn2).getEntries().size());
assertEquals(0, fHdfs2.getAclStatus(targetTestRoot2).getEntries().size());
// Remove the ACL entries on the first namespace
fsView.removeAcl(mountOnNn1);
assertEquals(0, fsView.getAclStatus(mountOnNn1).getEntries().size());
assertEquals(0, fHdfs.getAclStatus(targetTestRoot).getEntries().size());
// Now set ACLs on the second namespace
aclSpec = Lists.newArrayList(
aclEntry(ACCESS, USER, "bar", READ));
fsView.modifyAclEntries(mountOnNn2, aclSpec);
expected = new AclEntry[] {
aclEntry(ACCESS, USER, "bar", READ),
aclEntry(ACCESS, GROUP, READ_EXECUTE) };
assertArrayEquals(expected, aclEntryArray(fsView.getAclStatus(mountOnNn2)));
assertArrayEquals(expected, aclEntryArray(fHdfs2.getAclStatus(targetTestRoot2)));
// Remove the ACL entries on the second namespace
fsView.removeAclEntries(mountOnNn2, Lists.newArrayList(
aclEntry(ACCESS, USER, "bar", READ)
));
expected = new AclEntry[] { aclEntry(ACCESS, GROUP, READ_EXECUTE) };
assertArrayEquals(expected, aclEntryArray(fHdfs2.getAclStatus(targetTestRoot2)));
fsView.removeAcl(mountOnNn2);
assertEquals(0, fsView.getAclStatus(mountOnNn2).getEntries().size());
assertEquals(0, fHdfs2.getAclStatus(targetTestRoot2).getEntries().size());
}
private AclEntry[] aclEntryArray(AclStatus aclStatus) {
return aclStatus.getEntries().toArray(new AclEntry[0]);
}
}