Apache
/
hadoop
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

HADOOP-7257 Client side mount tables (sanjay) 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1100026 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Sanjay Radia 2011-05-06 02:11:31 +00:00
parent b9599b26dc
commit f1c74df922
37 changed files with 5601 additions and 52 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
CHANGES.txt
View File

@ -22,6 +22,8 @@ Trunk (unreleased changes)
HADOOP-7171. Support UGI in FileContext API. (jitendra)
HADOOP-7257 Client side mount tables (sanjay)
IMPROVEMENTS
HADOOP-7042. Updates to test-patch.sh to include failed test names and

14
src/java/core-default.xml
View File

@ -261,6 +261,13 @@
<description>The FileSystem for hdfs: uris.</description>
</property>
<property>
<name>fs.viewfs.impl</name>
<value>org.apache.hadoop.fs.viewfs.ViewFileSystem</value>
<description>The FileSystem for view file system for viewfs: uris
(ie client side mount table:).</description>
</property>
<property>
<name>fs.AbstractFileSystem.file.impl</name>
<value>org.apache.hadoop.fs.local.LocalFs</value>
@ -274,6 +281,13 @@
<description>The FileSystem for hdfs: uris.</description>
</property>
<property>
<name>fs.AbstractFileSystem.viewfs.impl</name>
<value>org.apache.hadoop.fs.viewfs.ViewFs</value>
<description>The AbstractFileSystem for view file system for viewfs: uris
(ie client side mount table:).</description>
</property>
<property>
<name>fs.s3.impl</name>
<value>org.apache.hadoop.fs.s3.S3FileSystem</value>

38
src/java/org/apache/hadoop/fs/AbstractFileSystem.java
View File

@ -23,6 +23,7 @@ import java.io.IOException;
import java.lang.reflect.Constructor;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.List;
@ -290,18 +291,19 @@ public abstract class AbstractFileSystem {
+ " is not valid");
}
String authority = uri.getAuthority();
if (!authorityNeeded) {
if (authority != null) {
throw new HadoopIllegalArgumentException("Scheme with non-null authority: "
+ uri);
}
return new URI(supportedScheme + ":///");
}
if (authority == null) {
throw new HadoopIllegalArgumentException("Uri without authority: " + uri);
if (authorityNeeded) {
throw new HadoopIllegalArgumentException("Uri without authority: " + uri);
} else {
return new URI(supportedScheme + ":///");
}
}
// authority is non null - AuthorityNeeded may be true or false.
int port = uri.getPort();
port = port == -1 ? defaultPort : port;
port = (port == -1 ? defaultPort : port);
if (port == -1) { // no port supplied and default port is not specified
return new URI(supportedScheme, authority, "/", null);
}
return new URI(supportedScheme + "://" + uri.getHost() + ":" + port);
}
@ -431,6 +433,21 @@ public abstract class AbstractFileSystem {
*/
public abstract FsServerDefaults getServerDefaults() throws IOException;
/**
* Return the fully-qualified path of path f resolving the path
* through any internal symlinks or mount point
* @param p path to be resolved
* @return fully qualified path
* @throws FileNotFoundException, AccessControlException, IOException
* UnresolvedLinkException if symbolic link on path cannot be resolved
* internally
*/
public Path resolvePath(final Path p) throws FileNotFoundException,
UnresolvedLinkException, AccessControlException, IOException {
checkPath(p);
return getFileStatus(p).getPath(); // default impl is to return the path
}
/**
* The specification of this method matches that of
* {@link FileContext#create(Path, EnumSet, Options.CreateOpts...)} except
@ -905,11 +922,12 @@ public abstract class AbstractFileSystem {
*
* @param renewer the account name that is allowed to renew the token.
* @return List of delegation tokens.
* If delegation tokens not supported then return a list of size zero.
* @throws IOException
*/
@InterfaceAudience.LimitedPrivate( { "HDFS", "MapReduce" })
public List<Token<?>> getDelegationTokens(String renewer) throws IOException {
return null;
return new ArrayList<Token<?>>(0);
}
@Override //Object

3
src/java/org/apache/hadoop/fs/DelegateToFileSystem.java
View File

@ -29,10 +29,7 @@ import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.security.SecurityUtil;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.security.token.SecretManager.InvalidToken;
import org.apache.hadoop.security.token.delegation.AbstractDelegationTokenIdentifier;
import org.apache.hadoop.util.Progressable;
/**

10
src/java/org/apache/hadoop/fs/FileContext.java
View File

@ -43,7 +43,6 @@ import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem.Statistics;
import org.apache.hadoop.fs.Options.CreateOpts;
import org.apache.hadoop.fs.Options.Rename;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.ipc.RpcClientException;
@ -525,6 +524,15 @@ public final class FileContext {
return ugi;
}
/**
* Return the current user's home directory in this file system.
* The default implementation returns "/user/$USER/".
* @return the home directory
*/
public Path getHomeDirectory() {
return defaultFS.getHomeDirectory();
}
/**
*
* @return the umask of this FileContext

20
src/java/org/apache/hadoop/fs/FileStatus.java
View File

@ -255,18 +255,18 @@ public class FileStatus implements Writable, Comparable {
//////////////////////////////////////////////////
public void write(DataOutput out) throws IOException {
Text.writeString(out, getPath().toString());
out.writeLong(length);
out.writeBoolean(isdir);
out.writeShort(block_replication);
out.writeLong(blocksize);
out.writeLong(modification_time);
out.writeLong(access_time);
permission.write(out);
Text.writeString(out, owner);
Text.writeString(out, group);
out.writeLong(getLen());
out.writeBoolean(isDirectory());
out.writeShort(getReplication());
out.writeLong(getBlockSize());
out.writeLong(getModificationTime());
out.writeLong(getAccessTime());
getPermission().write(out);
Text.writeString(out, getOwner());
Text.writeString(out, getGroup());
out.writeBoolean(isSymlink());
if (isSymlink()) {
Text.writeString(out, symlink.toString());
Text.writeString(out, getSymlink().toString());
}
}

19
src/java/org/apache/hadoop/fs/FileSystem.java
View File

@ -50,8 +50,6 @@ import org.apache.hadoop.io.MultipleIOException;
import org.apache.hadoop.security.SecurityUtil;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.security.token.SecretManager.InvalidToken;
import org.apache.hadoop.security.token.delegation.AbstractDelegationTokenIdentifier;
import org.apache.hadoop.util.Progressable;
import org.apache.hadoop.util.ReflectionUtils;
@ -360,12 +358,14 @@ public abstract class FileSystem extends Configured implements Closeable {
}
/**
* Deprecated - use @link {@link #getDelegationTokens(String)}
* Get a new delegation token for this file system.
* @param renewer the account name that is allowed to renew the token.
* @return a new delegation token
* @throws IOException
*/
@InterfaceAudience.LimitedPrivate({"HDFS", "MapReduce"})
@Deprecated
public Token<?> getDelegationToken(String renewer) throws IOException {
return null;
}
@ -378,11 +378,12 @@ public abstract class FileSystem extends Configured implements Closeable {
*
* @param renewer the account name that is allowed to renew the token.
* @return list of new delegation tokens
* If delegation tokens not supported then return a list of size zero.
* @throws IOException
*/
@InterfaceAudience.LimitedPrivate( { "HDFS", "MapReduce" })
public List<Token<?>> getDelegationTokens(String renewer) throws IOException {
return null;
return new ArrayList<Token<?>>(0);
}
/** create a file with the provided permission
@ -535,6 +536,18 @@ public abstract class FileSystem extends Configured implements Closeable {
getDefaultReplication(),
conf.getInt("io.file.buffer.size", 4096));
}
/**
* Return the fully-qualified path of path f resolving the path
* through any symlinks or mount point
* @param p path to be resolved
* @return fully qualified path
* @throws FileNotFoundException
*/
public Path resolvePath(final Path p) throws IOException {
checkPath(p);
return getFileStatus(p).getPath();
}
/**
* Opens an FSDataInputStream at the indicated Path.

8
src/java/org/apache/hadoop/fs/FilterFileSystem.java
View File

@ -94,7 +94,11 @@ public class FilterFileSystem extends FileSystem {
long len) throws IOException {
return fs.getFileBlockLocations(file, start, len);
}
@Override
public Path resolvePath(final Path p) throws IOException {
return fs.resolvePath(p);
}
/**
* Opens an FSDataInputStream at the indicated Path.
* @param f the file name to open
@ -363,6 +367,7 @@ public class FilterFileSystem extends FileSystem {
}
@Override
@SuppressWarnings("deprecation")
protected boolean primitiveMkdir(Path f, FsPermission abdolutePermission)
throws IOException {
return fs.primitiveMkdir(f, abdolutePermission);
@ -374,6 +379,7 @@ public class FilterFileSystem extends FileSystem {
}
@Override // FileSystem
@SuppressWarnings("deprecation")
public Token<?> getDelegationToken(String renewer) throws IOException {
return fs.getDelegationToken(renewer);
}

7
src/java/org/apache/hadoop/fs/FilterFs.java
View File

@ -138,6 +138,13 @@ public abstract class FilterFs extends AbstractFileSystem {
public FsServerDefaults getServerDefaults() throws IOException {
return myFs.getServerDefaults();
}
@Override
public Path resolvePath(final Path p) throws FileNotFoundException,
UnresolvedLinkException, AccessControlException, IOException {
return myFs.resolvePath(p);
}
@Override
public int getUriDefaultPort() {

314
src/java/org/apache/hadoop/fs/viewfs/ChRootedFileSystem.java Normal file
View File

@ -0,0 +1,314 @@
/**
* 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 java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.List;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.BlockLocation;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileChecksum;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.FsServerDefaults;
import org.apache.hadoop.fs.FsStatus;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.util.Progressable;
/**
* <code>ChRootedFileSystem</code> is a file system with its root some path
* below the root of its base file system.
*
* Example: For a base file system hdfs://nn1/ with chRoot at /usr/foo, the
* members will be setup as shown below.
* <ul>
* <li>myFs is the base file system and points to hdfs at nn1</li>
* <li>myURI is hdfs://nn1/user/foo</li>
* <li>chRootPathPart is /user/foo</li>
* <li>workingDir is a directory related to chRoot</li>
* </ul>
*
* The paths are resolved as follows by ChRootedFileSystem:
* <ul>
* <li> Absolute path /a/b/c is resolved to /user/foo/a/b/c at myFs</li>
* <li> Relative path x/y is resolved to /user/foo/<workingDir>/x/y</li>
* </ul>
*/
@InterfaceAudience.Private
@InterfaceStability.Evolving /*Evolving for a release,to be changed to Stable */
class ChRootedFileSystem extends FileSystem {
private final FileSystem myFs; // the base file system whose root is changed
private final URI myUri; // the base URI + the chRoot
private final Path chRootPathPart; // the root below the root of the base
private final String chRootPathPartString;
private Path workingDir;
protected FileSystem getMyFs() {
return myFs;
}
/**
* @param path
* @return full path including the chroot
*/
protected Path fullPath(final Path path) {
super.checkPath(path);
return path.isAbsolute() ?
new Path(chRootPathPartString + path.toUri().getPath()) :
new Path(chRootPathPartString + workingDir.toUri().getPath(), path);
}
/**
* Constructor
* @param fs base file system
* @param theRoot chRoot for this file system
* @throws URISyntaxException
*/
public ChRootedFileSystem(final FileSystem fs, final Path theRoot)
throws URISyntaxException {
myFs = fs;
myFs.makeQualified(theRoot); //check that root is a valid path for fs
// Would like to call myFs.checkPath(theRoot);
// but not public
chRootPathPart = new Path(theRoot.toUri().getPath());
chRootPathPartString = chRootPathPart.toUri().getPath();
try {
initialize(fs.getUri(), fs.getConf());
} catch (IOException e) { // This exception should not be thrown
throw new RuntimeException("This should not occur");
}
/*
* We are making URI include the chrootedPath: e.g. file:///chrootedPath.
* This is questionable since Path#makeQualified(uri, path) ignores
* the pathPart of a uri. Since this class is internal we can ignore
* this issue but if we were to make it external then this needs
* to be resolved.
*/
// Handle the two cases:
// scheme:/// and scheme://authority/
myUri = new URI(myFs.getUri().toString() +
(myFs.getUri().getAuthority() == null ? "" : Path.SEPARATOR) +
chRootPathPart.toString().substring(1));
workingDir = getHomeDirectory();
// We don't use the wd of the myFs, (lets set it to root anyway)
myFs.setWorkingDirectory(chRootPathPart);
}
/**
* Called after a new FileSystem instance is constructed.
* @param name a uri whose authority section names the host, port, etc.
* for this FileSystem
* @param conf the configuration
*/
public void initialize(final URI name, final Configuration conf)
throws IOException {
myFs.initialize(name, conf);
super.initialize(name, conf);
setConf(conf);
}
@Override
public URI getUri() {
return myUri;
}
@Override
public Path makeQualified(final Path path) {
return myFs.makeQualified(path);
// NOT myFs.makeQualified(fullPath(path));
}
/**
* Strip out the root from the path.
* @param p - fully qualified path p
* @return - the remaining path without the begining /
* @throws IOException if the p is not prefixed with root
*/
String stripOutRoot(final Path p) throws IOException {
try {
checkPath(p);
} catch (IllegalArgumentException e) {
throw new IOException("Internal Error - path " + p +
" should have been with URI: " + myUri);
}
String pathPart = p.toUri().getPath();
return (pathPart.length() == chRootPathPartString.length()) ? "" : pathPart
.substring(chRootPathPartString.length() + 1);
}
@Override
protected Path getInitialWorkingDirectory() {
/*
* 3 choices here:
* null or / or /user/<uname> or strip out the root out of myFs's
* inital wd.
* Only reasonable choice for initialWd for chrooted fds is null
* so that the default rule for wd is applied
*/
return null;
}
public Path getResolvedQualifiedPath(final Path f)
throws FileNotFoundException {
return myFs.makeQualified(
new Path(chRootPathPartString + f.toUri().toString()));
}
@Override
public Path getHomeDirectory() {
return new Path("/user/"+System.getProperty("user.name")).makeQualified(
getUri(), null);
}
@Override
public Path getWorkingDirectory() {
return workingDir;
}
@Override
public void setWorkingDirectory(final Path new_dir) {
workingDir = new_dir.isAbsolute() ? new_dir : new Path(workingDir, new_dir);
}
@Override
public FSDataOutputStream create(final Path f, final FsPermission permission,
final boolean overwrite, final int bufferSize, final short replication,
final long blockSize, final Progressable progress) throws IOException {
return myFs.create(fullPath(f), permission, overwrite, bufferSize,
replication, blockSize, progress);
}
@Override
public boolean delete(final Path f, final boolean recursive)
throws IOException {
return myFs.delete(fullPath(f), recursive);
}
@Override
@SuppressWarnings("deprecation")
public boolean delete(Path f) throws IOException {
return delete(f, true);
}
@Override
public BlockLocation[] getFileBlockLocations(final FileStatus fs, final long start,
final long len) throws IOException {
return myFs.getFileBlockLocations(
new ViewFsFileStatus(fs, fullPath(fs.getPath())), start, len);
}
@Override
public FileChecksum getFileChecksum(final Path f)
throws IOException {
return myFs.getFileChecksum(fullPath(f));
}
@Override
public FileStatus getFileStatus(final Path f)
throws IOException {
return myFs.getFileStatus(fullPath(f));
}
@Override
public FsStatus getStatus(Path p) throws IOException {
return myFs.getStatus(fullPath(p));
}
@Override
public FsServerDefaults getServerDefaults() throws IOException {
return myFs.getServerDefaults();
}
@Override
public FileStatus[] listStatus(final Path f)
throws IOException {
return myFs.listStatus(fullPath(f));
}
@Override
public boolean mkdirs(final Path f, final FsPermission permission)
throws IOException {
return myFs.mkdirs(fullPath(f), permission);
}
@Override
public FSDataInputStream open(final Path f, final int bufferSize)
throws IOException {
return myFs.open(fullPath(f), bufferSize);
}
@Override
public FSDataOutputStream append(final Path f, final int bufferSize,
final Progressable progress) throws IOException {
return myFs.append(fullPath(f), bufferSize, progress);
}
@Override
public boolean rename(final Path src, final Path dst) throws IOException {
// note fullPath will check that paths are relative to this FileSystem.
// Hence both are in same file system and a rename is valid
return myFs.rename(fullPath(src), fullPath(dst));
}
@Override
public void setOwner(final Path f, final String username,
final String groupname)
throws IOException {
myFs.setOwner(fullPath(f), username, groupname);
}
@Override
public void setPermission(final Path f, final FsPermission permission)
throws IOException {
myFs.setPermission(fullPath(f), permission);
}
@Override
public boolean setReplication(final Path f, final short replication)
throws IOException {
return myFs.setReplication(fullPath(f), replication);
}
@Override
public void setTimes(final Path f, final long mtime, final long atime)
throws IOException {
myFs.setTimes(fullPath(f), mtime, atime);
}
@Override
public void setVerifyChecksum(final boolean verifyChecksum) {
myFs.setVerifyChecksum(verifyChecksum);
}
@Override
public List<Token<?>> getDelegationTokens(String renewer) throws IOException {
return myFs.getDelegationTokens(renewer);
}
}

307
src/java/org/apache/hadoop/fs/viewfs/ChRootedFs.java Normal file
View File

@ -0,0 +1,307 @@
/**
* 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 java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.EnumSet;
import java.util.List;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.fs.AbstractFileSystem;
import org.apache.hadoop.fs.BlockLocation;
import org.apache.hadoop.fs.CreateFlag;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileChecksum;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FsServerDefaults;
import org.apache.hadoop.fs.FsStatus;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.UnresolvedLinkException;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.util.Progressable;
/**
* <code>ChrootedFs</code> is a file system with its root some path
* below the root of its base file system.
* Example: For a base file system hdfs://nn1/ with chRoot at /usr/foo, the
* members will be setup as shown below.
* <ul>
* <li>myFs is the base file system and points to hdfs at nn1</li>
* <li>myURI is hdfs://nn1/user/foo</li>
* <li>chRootPathPart is /user/foo</li>
* <li>workingDir is a directory related to chRoot</li>
* </ul>
*
* The paths are resolved as follows by ChRootedFileSystem:
* <ul>
* <li> Absolute path /a/b/c is resolved to /user/foo/a/b/c at myFs</li>
* <li> Relative path x/y is resolved to /user/foo/<workingDir>/x/y</li>
* </ul>
*
*/
@InterfaceAudience.Private
@InterfaceStability.Evolving /*Evolving for a release,to be changed to Stable */
class ChRootedFs extends AbstractFileSystem {
private final AbstractFileSystem myFs; // the base file system whose root is changed
private final URI myUri; // the base URI + the chroot
private final Path chRootPathPart; // the root below the root of the base
private final String chRootPathPartString;
protected AbstractFileSystem getMyFs() {
return myFs;
}
/**
*
* @param path
* @return return full path including the chroot
*/
protected Path fullPath(final Path path) {
super.checkPath(path);
return new Path(chRootPathPartString + path.toUri().getPath());
}
public ChRootedFs(final AbstractFileSystem fs, final Path theRoot)
throws URISyntaxException {
super(fs.getUri(), fs.getUri().getScheme(),
fs.getUri().getAuthority() != null, fs.getUriDefaultPort());
myFs = fs;
myFs.checkPath(theRoot);
chRootPathPart = new Path(myFs.getUriPath(theRoot));
chRootPathPartString = chRootPathPart.toUri().getPath();
/*
* We are making URI include the chrootedPath: e.g. file:///chrootedPath.
* This is questionable since Path#makeQualified(uri, path) ignores
* the pathPart of a uri. Since this class is internal we can ignore
* this issue but if we were to make it external then this needs
* to be resolved.
*/
// Handle the two cases:
// scheme:/// and scheme://authority/
myUri = new URI(myFs.getUri().toString() +
(myFs.getUri().getAuthority() == null ? "" : Path.SEPARATOR) +
chRootPathPart.toString().substring(1));
super.checkPath(theRoot);
}
@Override
public URI getUri() {
return myUri;
}
/**
*
* Strip out the root from the path.
*
* @param p - fully qualified path p
* @return - the remaining path without the begining /
*/
public String stripOutRoot(final Path p) {
try {
checkPath(p);
} catch (IllegalArgumentException e) {
throw new RuntimeException("Internal Error - path " + p +
" should have been with URI" + myUri);
}
String pathPart = p.toUri().getPath();
return (pathPart.length() == chRootPathPartString.length()) ?
"" : pathPart.substring(chRootPathPartString.length() + 1);
}
@Override
public Path getHomeDirectory() {
return myFs.getHomeDirectory();
}
@Override
public Path getInitialWorkingDirectory() {
/*
* 3 choices here: return null or / or strip out the root out of myFs's
* inital wd.
* Only reasonable choice for initialWd for chrooted fds is null
*/
return null;
}
public Path getResolvedQualifiedPath(final Path f)
throws FileNotFoundException {
return myFs.makeQualified(
new Path(chRootPathPartString + f.toUri().toString()));
}
@Override
public FSDataOutputStream createInternal(final Path f,
final EnumSet<CreateFlag> flag, final FsPermission absolutePermission,
final int bufferSize, final short replication, final long blockSize,
final Progressable progress, final int bytesPerChecksum,
final boolean createParent) throws IOException, UnresolvedLinkException {
return myFs.createInternal(fullPath(f), flag,
absolutePermission, bufferSize,
replication, blockSize, progress, bytesPerChecksum, createParent);
}
@Override
public boolean delete(final Path f, final boolean recursive)
throws IOException, UnresolvedLinkException {
return myFs.delete(fullPath(f), recursive);
}
@Override
public BlockLocation[] getFileBlockLocations(final Path f, final long start,
final long len) throws IOException, UnresolvedLinkException {
return myFs.getFileBlockLocations(fullPath(f), start, len);
}
@Override
public FileChecksum getFileChecksum(final Path f)
throws IOException, UnresolvedLinkException {
return myFs.getFileChecksum(fullPath(f));
}
@Override
public FileStatus getFileStatus(final Path f)
throws IOException, UnresolvedLinkException {
return myFs.getFileStatus(fullPath(f));
}
@Override
public FileStatus getFileLinkStatus(final Path f)
throws IOException, UnresolvedLinkException {
return myFs.getFileLinkStatus(fullPath(f));
}
@Override
public FsStatus getFsStatus() throws IOException {
return myFs.getFsStatus();
}
@Override
public FsServerDefaults getServerDefaults() throws IOException {
return myFs.getServerDefaults();
}
@Override
public int getUriDefaultPort() {
return myFs.getUriDefaultPort();
}
@Override
public FileStatus[] listStatus(final Path f)
throws IOException, UnresolvedLinkException {
return myFs.listStatus(fullPath(f));
}
@Override
public void mkdir(final Path dir, final FsPermission permission,
final boolean createParent) throws IOException, UnresolvedLinkException {
myFs.mkdir(fullPath(dir), permission, createParent);
}
@Override
public FSDataInputStream open(final Path f, final int bufferSize)
throws IOException, UnresolvedLinkException {
return myFs.open(fullPath(f), bufferSize);
}
@Override
public void renameInternal(final Path src, final Path dst)
throws IOException, UnresolvedLinkException {
// note fullPath will check that paths are relative to this FileSystem.
// Hence both are in same file system and a rename is valid
myFs.renameInternal(fullPath(src), fullPath(dst));
}
@Override
public void renameInternal(final Path src, final Path dst,
final boolean overwrite)
throws IOException, UnresolvedLinkException {
// note fullPath will check that paths are relative to this FileSystem.
// Hence both are in same file system and a rename is valid
myFs.renameInternal(fullPath(src), fullPath(dst), overwrite);
}
@Override
public void setOwner(final Path f, final String username,
final String groupname)
throws IOException, UnresolvedLinkException {
myFs.setOwner(fullPath(f), username, groupname);
}
@Override
public void setPermission(final Path f, final FsPermission permission)
throws IOException, UnresolvedLinkException {
myFs.setPermission(fullPath(f), permission);
}
@Override
public boolean setReplication(final Path f, final short replication)
throws IOException, UnresolvedLinkException {
return myFs.setReplication(fullPath(f), replication);
}
@Override
public void setTimes(final Path f, final long mtime, final long atime)
throws IOException, UnresolvedLinkException {
myFs.setTimes(fullPath(f), mtime, atime);
}
@Override
public void setVerifyChecksum(final boolean verifyChecksum)
throws IOException, UnresolvedLinkException {
myFs.setVerifyChecksum(verifyChecksum);
}
@Override
public boolean supportsSymlinks() {
return myFs.supportsSymlinks();
}
@Override
public void createSymlink(final Path target, final Path link,
final boolean createParent) throws IOException, UnresolvedLinkException {
/*
* We leave the link alone:
* If qualified or link relative then of course it is okay.
* If absolute (ie / relative) then the link has to be resolved
* relative to the changed root.
*/
myFs.createSymlink(fullPath(target), link, createParent);
}
@Override
public Path getLinkTarget(final Path f) throws IOException {
return myFs.getLinkTarget(fullPath(f));
}
@Override
public List<Token<?>> getDelegationTokens(String renewer) throws IOException {
return myFs.getDelegationTokens(renewer);
}
}

70
src/java/org/apache/hadoop/fs/viewfs/ConfigUtil.java Normal file
View File

@ -0,0 +1,70 @@
/**
* 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 java.net.URI;
import org.apache.hadoop.conf.Configuration;
/**
* Utilities for config variables of the viewFs See {@link ViewFs}
*/
public class ConfigUtil {
/**
* Get the config variable prefix for the specified mount table
* @param mountTableName - the name of the mount table
* @return the config variable prefix for the specified mount table
*/
public static String getConfigViewFsPrefix(final String mountTableName) {
return Constants.CONFIG_VIEWFS_PREFIX + "." + mountTableName;
}
/**
* Get the config variable prefix for the default mount table
* @return the config variable prefix for the default mount table
*/
public static String getConfigViewFsPrefix() {
return
getConfigViewFsPrefix(Constants.CONFIG_VIEWFS_PREFIX_DEFAULT_MOUNT_TABLE);
}
/**
* Add a link to the config for the specified mount table
* @param conf - add the link to this conf
* @param mountTableName
* @param src - the src path name
* @param target - the target URI link
*/
public static void addLink(Configuration conf, final String mountTableName,
final String src, final URI target) {
conf.set(getConfigViewFsPrefix(mountTableName) + "." +
Constants.CONFIG_VIEWFS_LINK + "." + src, target.toString());
}
/**
* Add a link to the config for the default mount table
* @param conf - add the link to this conf
* @param src - the src path name
* @param target - the target URI link
*/
public static void addLink(final Configuration conf, final String src,
final URI target) {
addLink( conf, Constants.CONFIG_VIEWFS_DEFAULT_MOUNT_TABLE,
src, target);
}
}

63
src/java/org/apache/hadoop/fs/viewfs/Constants.java Normal file
View File

@ -0,0 +1,63 @@
/**
* 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 org.apache.hadoop.fs.permission.FsPermission;
/**
* Config variable prefixes for ViewFs -
* see {@link org.apache.hadoop.fs.viewfs.ViewFs} for examples.
* The mount table is specified in the config using these prefixes.
* See {@link org.apache.hadoop.fs.viewfs.ConfigUtil} for convenience lib.
*/
public interface Constants {
/**
* Prefix for the config variable prefix for the ViewFs mount-table
*/
public static final String CONFIG_VIEWFS_PREFIX = "fs.viewfs.mounttable";
/**
* Config variable name for the default mount table.
*/
public static final String CONFIG_VIEWFS_DEFAULT_MOUNT_TABLE = "default";
/**
* Config variable full prefix for the default mount table.
*/
public static final String CONFIG_VIEWFS_PREFIX_DEFAULT_MOUNT_TABLE =
CONFIG_VIEWFS_PREFIX + "." + CONFIG_VIEWFS_DEFAULT_MOUNT_TABLE;
/**
* Config variable for specifying a simple link
*/
public static final String CONFIG_VIEWFS_LINK = "link";
/**
* Config variable for specifying a merge link
*/
public static final String CONFIG_VIEWFS_LINK_MERGE = "linkMerge";
/**
* Config variable for specifying a merge of the root of the mount-table
* with the root of another file system.
*/
public static final String CONFIG_VIEWFS_LINK_MERGE_SLASH = "linkMergeSlash";
static public final FsPermission PERMISSION_RRR =
new FsPermission((short) 0444);
}

445
src/java/org/apache/hadoop/fs/viewfs/InodeTree.java Normal file
View File

@ -0,0 +1,445 @@
/**
* 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 java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileAlreadyExistsException;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.UnsupportedFileSystemException;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.util.StringUtils;
/**
* InodeTree implements a mount-table as a tree of inodes.
* It is used to implement ViewFs and ViewFileSystem.
* In order to use it the caller must subclass it and implement
* the abstract methods {@link #getTargetFileSystem(INodeDir)}, etc.
*
* The mountable is initialized from the config variables as
* specified in {@link ViewFs}
*
* @param <T> is AbstractFileSystem or FileSystem
*
* The three main methods are
* {@link #InodeTreel(Configuration)} // constructor
* {@link #InodeTree(Configuration, String)} // constructor
* {@link #resolve(String, boolean)}
*/
@InterfaceAudience.Private
@InterfaceStability.Unstable
abstract class InodeTree<T> {
static enum ResultKind {isInternalDir, isExternalDir;};
static final Path SlashPath = new Path("/");
final INodeDir<T> root; // the root of the mount table
List<MountPoint<T>> mountPoints = new ArrayList<MountPoint<T>>();
static class MountPoint<T> {
String src;
INodeLink<T> target;
MountPoint(String srcPath, INodeLink<T> mountLink) {
src = srcPath;
target = mountLink;
}
}
/**
* Breaks file path into component names.
* @param path
* @return array of names component names
*/
static String[] breakIntoPathComponents(final String path) {
return path == null ? null : path.split(Path.SEPARATOR);
}
/**
* Internal class for inode tree
* @param <T>
*/
abstract static class INode<T> {
final String fullPath; // the full path to the root
public INode(String pathToNode, UserGroupInformation aUgi) {
fullPath = pathToNode;
}
};
/**
* Internal class to represent an internal dir of the mount table
* @param <T>
*/
static class INodeDir<T> extends INode<T> {
final Map<String,INode<T>> children = new HashMap<String,INode<T>>();
T InodeDirFs = null; // file system of this internal directory of mountT
boolean isRoot = false;
INodeDir(final String pathToNode, final UserGroupInformation aUgi) {
super(pathToNode, aUgi);
}
INode<T> resolve(final String pathComponent) throws FileNotFoundException {
final INode<T> result = resolveInternal(pathComponent);
if (result == null) {
throw new FileNotFoundException();
}
return result;
}
INode<T> resolveInternal(final String pathComponent)
throws FileNotFoundException {
return children.get(pathComponent);
}
INodeDir<T> addDir(final String pathComponent,
final UserGroupInformation aUgi)
throws FileAlreadyExistsException {
if (children.containsKey(pathComponent)) {
throw new FileAlreadyExistsException();
}
final INodeDir<T> newDir = new INodeDir<T>(fullPath+ (isRoot ? "" : "/") +
pathComponent, aUgi);
children.put(pathComponent, newDir);
return newDir;
}
void addLink(final String pathComponent, final INodeLink<T> link)
throws FileAlreadyExistsException {
if (children.containsKey(pathComponent)) {
throw new FileAlreadyExistsException();
}
children.put(pathComponent, link);
}
}
/**
* In internal class to represent a mount link
* A mount link can be single dir link or a merge dir link.
* A merge dir link is a merge (junction) of links to dirs:
* example : <merge of 2 dirs
* /users -> hdfs:nn1//users
* /users -> hdfs:nn2//users
*
* For a merge, each target is checked to be dir when created but if target
* is changed later it is then ignored (a dir with null entries)
*/
static class INodeLink<T> extends INode<T> {
final boolean isMergeLink; // true if MergeLink
final URI[] targetDirLinkList;
final T targetFileSystem; // file system object created from the link.
/**
* Construct a mergeLink
*/
INodeLink(final String pathToNode, final UserGroupInformation aUgi,
final T targetMergeFs, final URI[] aTargetDirLinkList) {
super(pathToNode, aUgi);
targetFileSystem = targetMergeFs;
targetDirLinkList = aTargetDirLinkList;
isMergeLink = true;
}
/**
* Construct a simple link (i.e. not a mergeLink)
*/
INodeLink(final String pathToNode, final UserGroupInformation aUgi,
final T targetFs, final URI aTargetDirLink) {
super(pathToNode, aUgi);
targetFileSystem = targetFs;
targetDirLinkList = new URI[1];
targetDirLinkList[0] = aTargetDirLink;
isMergeLink = false;
}
/**
* Get the target of the link
* If a merge link then it returned as "," separated URI list.
*/
Path getTargetLink() {
// is merge link - use "," as separator between the merged URIs
//String result = targetDirLinkList[0].toString();
StringBuilder result = new StringBuilder(targetDirLinkList[0].toString());
for (int i=1; i < targetDirLinkList.length; ++i) {
result.append(',').append(targetDirLinkList[i].toString());
}
return new Path(result.toString());
}
}
private void createLink(final String src, final String target,
final boolean isLinkMerge, final UserGroupInformation aUgi)
throws URISyntaxException, IOException,
FileAlreadyExistsException, UnsupportedFileSystemException {
// Validate that src is valid absolute path
final Path srcPath = new Path(src);
if (!srcPath.isAbsoluteAndSchemeAuthorityNull()) {
throw new IOException("ViewFs:Non absolute mount name in config:" + src);
}
final String[] srcPaths = breakIntoPathComponents(src);
INodeDir<T> curInode = root;
int i;
// Ignore first initial slash, process all except last component
for (i = 1; i < srcPaths.length-1; i++) {
final String iPath = srcPaths[i];
INode<T> nextInode = curInode.resolveInternal(iPath);
if (nextInode == null) {
INodeDir<T> newDir = curInode.addDir(iPath, aUgi);
newDir.InodeDirFs = getTargetFileSystem(newDir);
nextInode = newDir;
}
if (nextInode instanceof INodeLink) {
// Error - expected a dir but got a link
throw new FileAlreadyExistsException("Path " + nextInode.fullPath +
" already exists as link");
} else {
assert(nextInode instanceof INodeDir);
curInode = (INodeDir<T>) nextInode;
}
}
// Now process the last component
// Add the link in 2 cases: does not exist or a link exists
String iPath = srcPaths[i];// last component
if (curInode.resolveInternal(iPath) != null) {
// directory/link already exists
StringBuilder strB = new StringBuilder(srcPaths[0]);
for (int j = 1; j <= i; ++j) {
strB.append('/').append(srcPaths[j]);
}
throw new FileAlreadyExistsException("Path " + strB +
" already exists as dir; cannot create link here");
}
final INodeLink<T> newLink;
final String fullPath = curInode.fullPath + (curInode == root ? "" : "/")
+ iPath;
if (isLinkMerge) { // Target is list of URIs
String[] targetsList = StringUtils.getStrings(target);
URI[] targetsListURI = new URI[targetsList.length];
int k = 0;
for (String itarget : targetsList) {
targetsListURI[k++] = new URI(itarget);
}
newLink = new INodeLink<T>(fullPath, aUgi,
getTargetFileSystem(targetsListURI), targetsListURI);
} else {
newLink = new INodeLink<T>(fullPath, aUgi,
getTargetFileSystem(new URI(target)), new URI(target));
}
curInode.addLink(iPath, newLink);
mountPoints.add(new MountPoint<T>(src, newLink));
}
/**
* Below the "public" methods of InodeTree
*/
/**
* The user of this class must subclass and implement the following
* 3 abstract methods.
* @throws IOException
*/
protected abstract T getTargetFileSystem(final URI uri)
throws UnsupportedFileSystemException, URISyntaxException, IOException;
protected abstract T getTargetFileSystem(final INodeDir<T> dir)
throws URISyntaxException;
protected abstract T getTargetFileSystem(final URI[] mergeFsURIList)
throws UnsupportedFileSystemException, URISyntaxException;
/**
* Create Inode Tree from the specified mount-table specified in Config
* @param config - the mount table keys are prefixed with
* FsConstants.CONFIG_VIEWFS_PREFIX
* @param viewName - the name of the mount table - if null use defaultMT name
* @throws UnsupportedFileSystemException
* @throws URISyntaxException
* @throws FileAlreadyExistsException
* @throws IOException
*/
protected InodeTree(final Configuration config, final String viewName)
throws UnsupportedFileSystemException, URISyntaxException,
FileAlreadyExistsException, IOException {
String vName = viewName;
if (vName == null) {
vName = Constants.CONFIG_VIEWFS_DEFAULT_MOUNT_TABLE;
}
root = new INodeDir<T>("/", UserGroupInformation.getCurrentUser());
root.InodeDirFs = getTargetFileSystem(root);
root.isRoot = true;
final String mtPrefix = Constants.CONFIG_VIEWFS_PREFIX + "." +
vName + ".";
final String linkPrefix = Constants.CONFIG_VIEWFS_LINK + ".";
final String linkMergePrefix = Constants.CONFIG_VIEWFS_LINK_MERGE + ".";
boolean gotMountTableEntry = false;
final UserGroupInformation ugi = UserGroupInformation.getCurrentUser();
for (Entry<String, String> si : config) {
final String key = si.getKey();
if (key.startsWith(mtPrefix)) {
gotMountTableEntry = true;
boolean isMergeLink = false;
String src = key.substring(mtPrefix.length());
if (src.startsWith(linkPrefix)) {
src = src.substring(linkPrefix.length());
} else if (src.startsWith(linkMergePrefix)) { // A merge link
isMergeLink = true;
src = src.substring(linkMergePrefix.length());
} else {
throw new IOException(
"ViewFs: Cannot initialize: Invalid entry in Mount table in config: "+
src);
}
final String target = si.getValue(); // link or merge link
createLink(src, target, isMergeLink, ugi);
}
}
if (!gotMountTableEntry) {
throw new IOException(
"ViewFs: Cannot initialize: Empty Mount table in config for " +
vName == null ? "viewfs:///" : ("viewfs://" + vName + "/"));
}
}
/**
* Resolve returns ResolveResult.
* The caller can continue the resolution of the remainingPath
* in the targetFileSystem.
*
* If the input pathname leads to link to another file system then
* the targetFileSystem is the one denoted by the link (except it is
* file system chrooted to link target.
* If the input pathname leads to an internal mount-table entry then
* the target file system is one that represents the internal inode.
*/
static class ResolveResult<T> {
final ResultKind kind;
final T targetFileSystem;
final String resolvedPath;
final Path remainingPath; // to resolve in the target FileSystem
ResolveResult(final ResultKind k, final T targetFs, final String resolveP,
final Path remainingP) {
kind = k;
targetFileSystem = targetFs;
resolvedPath = resolveP;
remainingPath = remainingP;
}
// isInternalDir of path resolution completed within the mount table
boolean isInternalDir() {
return (kind == ResultKind.isInternalDir);
}
}
/**
* Resolve the pathname p relative to root InodeDir
* @param p - inout path
* @param resolveLastComponent
* @return ResolveResult which allows further resolution of the remaining path
* @throws FileNotFoundException
*/
ResolveResult<T> resolve(final String p, final boolean resolveLastComponent)
throws FileNotFoundException {
// TO DO: - more efficient to not split the path, but simply compare
String[] path = breakIntoPathComponents(p);
if (path.length <= 1) { // special case for when path is "/"
ResolveResult<T> res =
new ResolveResult<T>(ResultKind.isInternalDir,
root.InodeDirFs, root.fullPath, SlashPath);
return res;
}
INodeDir<T> curInode = root;
int i;
// ignore first slash
for (i = 1; i < path.length - (resolveLastComponent ? 0 : 1); i++) {
INode<T> nextInode = curInode.resolveInternal(path[i]);
if (nextInode == null) {
StringBuilder failedAt = new StringBuilder(path[0]);
for ( int j = 1; j <=i; ++j) {
failedAt.append('/').append(path[j]);
}
throw (new FileNotFoundException(failedAt.toString()));
}
if (nextInode instanceof INodeLink) {
final INodeLink<T> link = (INodeLink<T>) nextInode;
final Path remainingPath;
if (i >= path.length-1) {
remainingPath = SlashPath;
} else {
StringBuilder remainingPathStr = new StringBuilder("/" + path[i+1]);
for (int j = i+2; j< path.length; ++j) {
remainingPathStr.append('/').append(path[j]);
}
remainingPath = new Path(remainingPathStr.toString());
}
final ResolveResult<T> res =
new ResolveResult<T>(ResultKind.isExternalDir,
link.targetFileSystem, nextInode.fullPath, remainingPath);
return res;
} else if (nextInode instanceof INodeDir) {
curInode = (INodeDir<T>) nextInode;
}
}
// We have resolved to an internal dir in mount table.
Path remainingPath;
if (resolveLastComponent) {
remainingPath = SlashPath;
} else {
// note we have taken care of when path is "/" above
// for internal dirs rem-path does not start with / since the lookup
// that follows will do a children.get(remaningPath) and will have to
// strip-out the initial /
StringBuilder remainingPathStr = new StringBuilder("/" + path[i]);
for (int j = i+1; j< path.length; ++j) {
remainingPathStr.append('/').append(path[j]);
}
remainingPath = new Path(remainingPathStr.toString());
}
final ResolveResult<T> res =
new ResolveResult<T>(ResultKind.isInternalDir,
curInode.InodeDirFs, curInode.fullPath, remainingPath);
return res;
}
List<MountPoint<T>> getMountPoints() {
return mountPoints;
}
}

685
src/java/org/apache/hadoop/fs/viewfs/ViewFileSystem.java Normal file
View File

@ -0,0 +1,685 @@
/**
* 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 static org.apache.hadoop.fs.viewfs.Constants.PERMISSION_RRR;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;
import java.util.Map.Entry;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.BlockLocation;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileAlreadyExistsException;
import org.apache.hadoop.fs.FileChecksum;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.FsConstants;
import org.apache.hadoop.fs.InvalidPathException;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.UnsupportedFileSystemException;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.fs.viewfs.InodeTree.INode;
import org.apache.hadoop.fs.viewfs.InodeTree.INodeLink;
import org.apache.hadoop.security.AccessControlException;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.util.Progressable;
/**
* ViewFileSystem (extends the FileSystem interface) implements a client-side
* mount table. Its spec and implementation is identical to {@link ViewFs}.
*/
@InterfaceAudience.Public
@InterfaceStability.Evolving /*Evolving for a release,to be changed to Stable */
public class ViewFileSystem extends FileSystem {
static AccessControlException readOnlyMountTable(final String operation,
final String p) {
return new AccessControlException(
"InternalDir of ViewFileSystem is readonly; operation=" + operation +
"Path=" + p);
}
static AccessControlException readOnlyMountTable(final String operation,
final Path p) {
return readOnlyMountTable(operation, p.toString());
}
static public class MountPoint {
private Path src; // the src of the mount
private URI[] targets; // target of the mount; Multiple targets imply mergeMount
MountPoint(Path srcPath, URI[] targetURIs) {
src = srcPath;
targets = targetURIs;
}
Path getSrc() {
return src;
}
URI[] getTargets() {
return targets;
}
}
final long creationTime; // of the the mount table
final UserGroupInformation ugi; // the user/group of user who created mtable
URI myUri;
private Path workingDir;
Configuration config;
InodeTree<FileSystem> fsState; // the fs state; ie the mount table
/**
* Prohibits names which contain a ".", "..", ":" or "/"
*/
private static boolean isValidName(final String src) {
// Check for ".." "." ":" "/"
final StringTokenizer tokens = new StringTokenizer(src, Path.SEPARATOR);
while(tokens.hasMoreTokens()) {
String element = tokens.nextToken();
if (element.equals("..") ||
element.equals(".") ||
(element.indexOf(":") >= 0)) {
return false;
}
}
return true;
}
/**
* Make the path Absolute and get the path-part of a pathname.
* Checks that URI matches this file system
* and that the path-part is a valid name.
*
* @param p path
* @return path-part of the Path p
*/
private String getUriPath(final Path p) {
checkPath(p);
String s = makeAbsolute(p).toUri().getPath();
if (!isValidName(s)) {
throw new InvalidPathException("Path part " + s + " from URI" + p
+ " is not a valid filename.");
}
return s;
}
private Path makeAbsolute(final Path f) {
return f.isAbsolute() ? f : new Path(workingDir, f);
}
/**
* This is the constructor with the signature needed by
* {@link FileSystem#createFileSystem(URI, Configuration)}
*
* After this constructor is called initialize() is called.
* @throws IOException
*/
public ViewFileSystem() throws IOException {
ugi = UserGroupInformation.getCurrentUser();
creationTime = System.currentTimeMillis();
}
/**
* Called after a new FileSystem instance is constructed.
* @param theUri a uri whose authority section names the host, port, etc. for
* this FileSystem
* @param conf the configuration
*/
public void initialize(final URI theUri, final Configuration conf)
throws IOException {
super.initialize(theUri, conf);
setConf(conf);
config = conf;
// Now build client side view (i.e. client side mount table) from config.
final String authority = theUri.getAuthority();
try {
myUri = new URI(FsConstants.VIEWFS_SCHEME, authority, "/", null, null);
workingDir =
this.makeQualified(new Path("/user/" + ugi.getShortUserName()));
fsState = new InodeTree<FileSystem>(conf, authority) {
@Override
protected
FileSystem getTargetFileSystem(final URI uri)
throws URISyntaxException, IOException {
return new ChRootedFileSystem(FileSystem.get(uri, config),
new Path(uri.getPath()));
}
@Override
protected
FileSystem getTargetFileSystem(final INodeDir<FileSystem> dir)
throws URISyntaxException {
return new InternalDirOfViewFs(dir, creationTime, ugi, myUri);
}
@Override
protected
FileSystem getTargetFileSystem(URI[] mergeFsURIList)
throws URISyntaxException, UnsupportedFileSystemException {
throw new UnsupportedFileSystemException("mergefs not implemented");
// return MergeFs.createMergeFs(mergeFsURIList, config);
}
};
} catch (URISyntaxException e) {
throw new IOException("URISyntax exception: " + theUri);
}
}
/**
* Convenience Constructor for apps to call directly
* @param theUri which must be that of ViewFileSystem
* @param conf
* @throws IOException
*/
ViewFileSystem(final URI theUri, final Configuration conf)
throws IOException {
this();
initialize(theUri, conf);
}
/**
* Convenience Constructor for apps to call directly
* @param conf
* @throws IOException
*/
public ViewFileSystem(final Configuration conf) throws IOException {
this(FsConstants.VIEWFS_URI, conf);
}
public Path getTrashCanLocation(final Path f) throws FileNotFoundException {
final InodeTree.ResolveResult<FileSystem> res =
fsState.resolve(getUriPath(f), true);
return res.isInternalDir() ? null : res.targetFileSystem.getHomeDirectory();
}
@Override
public URI getUri() {
return myUri;
}
@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 Path getWorkingDirectory() {
return workingDir;
}
@Override
public void setWorkingDirectory(final Path new_dir) {
getUriPath(new_dir); // this validates the path
workingDir = makeAbsolute(new_dir);
}
@Override
public FSDataOutputStream append(final Path f, final int bufferSize,
final Progressable progress) throws IOException {
InodeTree.ResolveResult<FileSystem> res =
fsState.resolve(getUriPath(f), true);
return res.targetFileSystem.append(res.remainingPath, bufferSize, progress);
}
@Override
public FSDataOutputStream create(final Path f, final FsPermission permission,
final boolean overwrite, final int bufferSize, final short replication,
final long blockSize, final Progressable progress) throws IOException {
InodeTree.ResolveResult<FileSystem> res;
try {
res = fsState.resolve(getUriPath(f), false);
} catch (FileNotFoundException e) {
throw readOnlyMountTable("create", f);
}
assert(res.remainingPath != null);
return res.targetFileSystem.create(res.remainingPath, permission,
overwrite, bufferSize, replication, blockSize, progress);
}
@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
@SuppressWarnings("deprecation")
public boolean delete(final Path f)
throws AccessControlException, FileNotFoundException,
IOException {
return delete(f, true);
}
@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);
}
@Override
public FileChecksum getFileChecksum(final Path f)
throws AccessControlException, FileNotFoundException,
IOException {
InodeTree.ResolveResult<FileSystem> res =
fsState.resolve(getUriPath(f), true);
return res.targetFileSystem.getFileChecksum(f);
}
@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));
}
@Override
public FileStatus[] listStatus(final Path f) throws AccessControlException,
FileNotFoundException, IOException {
InodeTree.ResolveResult<FileSystem> res =
fsState.resolve(getUriPath(f), true);
FileStatus[] statusLst = res.targetFileSystem.listStatus(res.remainingPath);
if (!res.isInternalDir()) {
// We need to change the name in the FileStatus as described in
// {@link #getFileStatus }
ChRootedFileSystem targetFs;
targetFs = (ChRootedFileSystem) res.targetFileSystem;
int i = 0;
for (FileStatus status : statusLst) {
String suffix = targetFs.stripOutRoot(status.getPath());
statusLst[i++] = new ViewFsFileStatus(status, this.makeQualified(
suffix.length() == 0 ? f : new Path(res.resolvedPath, suffix)));
}
}
return statusLst;
}
@Override
public boolean mkdirs(final Path dir, final FsPermission permission)
throws IOException {
InodeTree.ResolveResult<FileSystem> res =
fsState.resolve(getUriPath(dir), false);
return res.targetFileSystem.mkdirs(res.remainingPath, permission);
}
@Override
public FSDataInputStream open(final Path f, final int bufferSize)
throws AccessControlException, FileNotFoundException,
IOException {
InodeTree.ResolveResult<FileSystem> res =
fsState.resolve(getUriPath(f), true);
return res.targetFileSystem.open(res.remainingPath, bufferSize);
}
@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);
}
@Override
public void setOwner(final Path f, final String username,
final String groupname) throws AccessControlException,
FileNotFoundException,
IOException {
InodeTree.ResolveResult<FileSystem> res =
fsState.resolve(getUriPath(f), true);
res.targetFileSystem.setOwner(res.remainingPath, username, groupname);
}
@Override
public void setPermission(final Path f, final FsPermission permission)
throws AccessControlException, FileNotFoundException,
IOException {
InodeTree.ResolveResult<FileSystem> res =
fsState.resolve(getUriPath(f), true);
res.targetFileSystem.setPermission(res.remainingPath, permission);
}
@Override
public boolean setReplication(final Path f, final short replication)
throws AccessControlException, FileNotFoundException,
IOException {
InodeTree.ResolveResult<FileSystem> res =
fsState.resolve(getUriPath(f), true);
return res.targetFileSystem.setReplication(res.remainingPath, replication);
}
@Override
public void setTimes(final Path f, final long mtime, final long atime)
throws AccessControlException, FileNotFoundException,
IOException {
InodeTree.ResolveResult<FileSystem> res =
fsState.resolve(getUriPath(f), true);
res.targetFileSystem.setTimes(res.remainingPath, mtime, atime);
}
@Override
public void setVerifyChecksum(final boolean verifyChecksum) {
// This is a file system level operations, however ViewFileSystem
// points to many file systems. Noop for ViewFileSystem.
}
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;
}
@Override
public List<Token<?>> getDelegationTokens(String renewer) throws IOException {
List<InodeTree.MountPoint<FileSystem>> mountPoints =
fsState.getMountPoints();
int initialListSize = 0;
for (InodeTree.MountPoint<FileSystem> im : mountPoints) {
initialListSize += im.target.targetDirLinkList.length;
}
List<Token<?>> result = new ArrayList<Token<?>>(initialListSize);
for ( int i = 0; i < mountPoints.size(); ++i ) {
List<Token<?>> tokens =
mountPoints.get(i).target.targetFileSystem.getDelegationTokens(renewer);
if (tokens != null) {
result.addAll(tokens);
}
}
return result;
}
/*
* An instance of this class represents an internal dir of the viewFs
* that is internal dir of the mount table.
* It is a read only mount tables and create, mkdir or delete operations
* are not allowed.
* If called on create or mkdir then this target is the parent of the
* directory in which one is trying to create or mkdir; hence
* in this case the path name passed in is the last component.
* Otherwise this target is the end point of the path and hence
* the path name passed in is null.
*/
static class InternalDirOfViewFs extends FileSystem {
final InodeTree.INodeDir<FileSystem> theInternalDir;
final long creationTime; // of the the mount table
final UserGroupInformation ugi; // the user/group of user who created mtable
final URI myUri;
public InternalDirOfViewFs(final InodeTree.INodeDir<FileSystem> dir,
final long cTime, final UserGroupInformation ugi, URI uri)
throws URISyntaxException {
myUri = uri;
try {
initialize(myUri, new Configuration());
} catch (IOException e) {
throw new RuntimeException("Cannot occur");
}
theInternalDir = dir;
creationTime = cTime;
this.ugi = ugi;
}
static private void checkPathIsSlash(final Path f) throws IOException {
if (f != InodeTree.SlashPath) {
throw new IOException (
"Internal implementation error: expected file name to be /" );
}
}
@Override
public URI getUri() {
return myUri;
}
@Override
public Path getWorkingDirectory() {
throw new RuntimeException (
"Internal impl error: getWorkingDir should not have been called" );
}
@Override
public void setWorkingDirectory(final Path new_dir) {
throw new RuntimeException (
"Internal impl error: getWorkingDir should not have been called" );
}
@Override
public FSDataOutputStream append(final Path f, final int bufferSize,
final Progressable progress) throws IOException {
throw readOnlyMountTable("append", f);
}
@Override
public FSDataOutputStream create(final Path f,
final FsPermission permission, final boolean overwrite,
final int bufferSize, final short replication, final long blockSize,
final Progressable progress) throws AccessControlException {
throw readOnlyMountTable("create", f);
}
@Override
public boolean delete(final Path f, final boolean recursive)
throws AccessControlException, IOException {
checkPathIsSlash(f);
throw readOnlyMountTable("delete", f);
}
@Override
@SuppressWarnings("deprecation")
public boolean delete(final Path f)
throws AccessControlException, IOException {
return delete(f, true);
}
@Override
public BlockLocation[] getFileBlockLocations(final FileStatus fs,
final long start, final long len) throws
FileNotFoundException, IOException {
checkPathIsSlash(fs.getPath());
throw new FileNotFoundException("Path points to dir not a file");
}
@Override
public FileChecksum getFileChecksum(final Path f)
throws FileNotFoundException, IOException {
checkPathIsSlash(f);
throw new FileNotFoundException("Path points to dir not a file");
}
@Override
public FileStatus getFileStatus(Path f) throws IOException {
checkPathIsSlash(f);
return new FileStatus(0, true, 0, 0, creationTime, creationTime,
PERMISSION_RRR, ugi.getUserName(), ugi.getGroupNames()[0],
new Path(theInternalDir.fullPath).makeQualified(
myUri, null));
}
@Override
public FileStatus[] listStatus(Path f) throws AccessControlException,
FileNotFoundException, IOException {
checkPathIsSlash(f);
FileStatus[] result = new FileStatus[theInternalDir.children.size()];
int i = 0;
for (Entry<String, INode<FileSystem>> iEntry :
theInternalDir.children.entrySet()) {
INode<FileSystem> inode = iEntry.getValue();
if (inode instanceof INodeLink ) {
INodeLink<FileSystem> link = (INodeLink<FileSystem>) inode;
result[i++] = new FileStatus(0, false, 0, 0,
creationTime, creationTime, PERMISSION_RRR,
ugi.getUserName(), ugi.getGroupNames()[0],
link.getTargetLink(),
new Path(inode.fullPath).makeQualified(
myUri, null));
} else {
result[i++] = new FileStatus(0, true, 0, 0,
creationTime, creationTime, PERMISSION_RRR,
ugi.getUserName(), ugi.getGroupNames()[0],
new Path(inode.fullPath).makeQualified(
myUri, null));
}
}
return result;
}
@Override
public boolean mkdirs(Path dir, FsPermission permission)
throws AccessControlException, FileAlreadyExistsException {
if (theInternalDir.isRoot & dir == null) {
throw new FileAlreadyExistsException("/ already exits");
}
// Note dir starts with /
if (theInternalDir.children.containsKey(dir.toString().substring(1))) {
return true; // this is the stupid semantics of FileSystem
}
throw readOnlyMountTable("mkdirs", dir);
}
@Override
public FSDataInputStream open(Path f, int bufferSize)
throws AccessControlException, FileNotFoundException, IOException {
checkPathIsSlash(f);
throw new FileNotFoundException("Path points to dir not a file");
}
@Override
public boolean rename(Path src, Path dst) throws AccessControlException,
IOException {
checkPathIsSlash(src);
checkPathIsSlash(dst);
throw readOnlyMountTable("rename", src);
}
@Override
public void setOwner(Path f, String username, String groupname)
throws AccessControlException, IOException {
checkPathIsSlash(f);
throw readOnlyMountTable("setOwner", f);
}
@Override
public void setPermission(Path f, FsPermission permission)
throws AccessControlException, IOException {
checkPathIsSlash(f);
throw readOnlyMountTable("setPermission", f);
}
@Override
public boolean setReplication(Path f, short replication)
throws AccessControlException, IOException {
checkPathIsSlash(f);
throw readOnlyMountTable("setReplication", f);
}
@Override
public void setTimes(Path f, long mtime, long atime)
throws AccessControlException, IOException {
checkPathIsSlash(f);
throw readOnlyMountTable("setTimes", f);
}
@Override
public void setVerifyChecksum(boolean verifyChecksum) {
// Noop for viewfs
}
}
}

809
src/java/org/apache/hadoop/fs/viewfs/ViewFs.java Normal file
View File

@ -0,0 +1,809 @@
/**
* 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 static org.apache.hadoop.fs.viewfs.Constants.PERMISSION_RRR;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.EnumSet;
import java.util.List;
import java.util.Map.Entry;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.AbstractFileSystem;
import org.apache.hadoop.fs.BlockLocation;
import org.apache.hadoop.fs.CreateFlag;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileAlreadyExistsException;
import org.apache.hadoop.fs.FileChecksum;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FsConstants;
import org.apache.hadoop.fs.FsServerDefaults;
import org.apache.hadoop.fs.FsStatus;
import org.apache.hadoop.fs.ParentNotDirectoryException;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.RemoteIterator;
import org.apache.hadoop.fs.UnresolvedLinkException;
import org.apache.hadoop.fs.UnsupportedFileSystemException;
import org.apache.hadoop.fs.local.LocalConfigKeys;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.fs.viewfs.InodeTree.INode;
import org.apache.hadoop.fs.viewfs.InodeTree.INodeLink;
import org.apache.hadoop.security.AccessControlException;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.util.Progressable;
/**
* ViewFs (extends the AbstractFileSystem interface) implements a client-side
* mount table. The viewFs file system is implemented completely in memory on
* the client side. The client-side mount table allows a client to provide a
* customized view of a file system namespace that is composed from
* one or more individual file systems (a localFs or Hdfs, S3fs, etc).
* For example one could have a mount table that provides links such as
* <ul>
* <li> /user -> hdfs://nnContainingUserDir/user
* <li> /project/foo -> hdfs://nnProject1/projects/foo
* <li> /project/bar -> hdfs://nnProject2/projects/bar
* <li> /tmp -> hdfs://nnTmp/privateTmpForUserXXX
* </ul>
*
* ViewFs is specified with the following URI: <b>viewfs:///</b>
* <p>
* To use viewfs one would typically set the default file system in the
* config (i.e. fs.default.name< = viewfs:///) along with the
* mount table config variables as described below.
*
* <p>
* <b> ** Config variables to specify the mount table entries ** </b>
* <p>
*
* The file system is initialized from the standard Hadoop config through
* config variables.
* See {@link FsConstants} for URI and Scheme constants;
* See {@link Constants} for config var constants;
* see {@link ConfigUtil} for convenient lib.
*
* <p>
* All the mount table config entries for view fs are prefixed by
* <b>fs.viewfs.mounttable.</b>
* For example the above example can be specified with the following
* config variables:
* <ul>
* <li> fs.viewfs.mounttable.default.link./user=
* hdfs://nnContainingUserDir/user
* <li> fs.viewfs.mounttable.default.link./project/foo=
* hdfs://nnProject1/projects/foo
* <li> fs.viewfs.mounttable.default.link./project/bar=
* hdfs://nnProject2/projects/bar
* <li> fs.viewfs.mounttable.default.link./tmp=
* hdfs://nnTmp/privateTmpForUserXXX
* </ul>
*
* The default mount table (when no authority is specified) is
* from config variables prefixed by <b>fs.viewFs.mounttable.default </b>
* The authority component of a URI can be used to specify a different mount
* table. For example,
* <ul>
* <li> viewfs://sanjayMountable/
* </ul>
* is initialized from fs.viewFs.mounttable.sanjayMountable.* config variables.
*
* <p>
* <b> **** Merge Mounts **** </b>(NOTE: merge mounts are not implemented yet.)
* <p>
*
* One can also use "MergeMounts" to merge several directories (this is
* sometimes called union-mounts or junction-mounts in the literature.
* For example of the home directories are stored on say two file systems
* (because they do not fit on one) then one could specify a mount
* entry such as following merges two dirs:
* <ul>
* <li> /user -> hdfs://nnUser1/user,hdfs://nnUser2/user
* </ul>
* Such a mergeLink can be specified with the following config var where ","
* is used as the separator for each of links to be merged:
* <ul>
* <li> fs.viewfs.mounttable.default.linkMerge./user=
* hdfs://nnUser1/user,hdfs://nnUser1/user
* </ul>
* A special case of the merge mount is where mount table's root is merged
* with the root (slash) of another file system:
* <ul>
* <li> fs.viewfs.mounttable.default.linkMergeSlash=hdfs://nn99/
* </ul>
* In this cases the root of the mount table is merged with the root of
* <b>hdfs://nn99/ </b>
*/
@InterfaceAudience.Public
@InterfaceStability.Evolving /*Evolving for a release,to be changed to Stable */
public class ViewFs extends AbstractFileSystem {
final long creationTime; // of the the mount table
final UserGroupInformation ugi; // the user/group of user who created mtable
final Configuration config;
InodeTree<AbstractFileSystem> fsState; // the fs state; ie the mount table
static AccessControlException readOnlyMountTable(final String operation,
final String p) {
return new AccessControlException(
"InternalDir of ViewFileSystem is readonly; operation=" + operation +
"Path=" + p);
}
static AccessControlException readOnlyMountTable(final String operation,
final Path p) {
return readOnlyMountTable(operation, p.toString());
}
static public class MountPoint {
private Path src; // the src of the mount
private URI[] targets; // target of the mount; Multiple targets imply mergeMount
MountPoint(Path srcPath, URI[] targetURIs) {
src = srcPath;
targets = targetURIs;
}
Path getSrc() {
return src;
}
URI[] getTargets() {
return targets;
}
}
public ViewFs(final Configuration conf) throws IOException,
URISyntaxException {
this(FsConstants.VIEWFS_URI, conf);
}
/**
* This constructor has the signature needed by
* {@link AbstractFileSystem#createFileSystem(URI, Configuration)}.
*
* @param theUri which must be that of ViewFs
* @param conf
* @throws IOException
* @throws URISyntaxException
*/
ViewFs(final URI theUri, final Configuration conf) throws IOException,
URISyntaxException {
super(theUri, FsConstants.VIEWFS_SCHEME, false, -1);
creationTime = System.currentTimeMillis();
ugi = UserGroupInformation.getCurrentUser();
config = conf;
// Now build client side view (i.e. client side mount table) from config.
String authority = theUri.getAuthority();
fsState = new InodeTree<AbstractFileSystem>(conf, authority) {
@Override
protected
AbstractFileSystem getTargetFileSystem(final URI uri)
throws URISyntaxException, UnsupportedFileSystemException {
return new ChRootedFs(
AbstractFileSystem.createFileSystem(uri, config),
new Path(uri.getPath()));
}
@Override
protected
AbstractFileSystem getTargetFileSystem(
final INodeDir<AbstractFileSystem> dir) throws URISyntaxException {
return new InternalDirOfViewFs(dir, creationTime, ugi, getUri());
}
@Override
protected
AbstractFileSystem getTargetFileSystem(URI[] mergeFsURIList)
throws URISyntaxException, UnsupportedFileSystemException {
throw new UnsupportedFileSystemException("mergefs not implemented yet");
// return MergeFs.createMergeFs(mergeFsURIList, config);
}
};
}
@Override
public FsServerDefaults getServerDefaults() throws IOException {
return LocalConfigKeys.getServerDefaults();
}
@Override
public int getUriDefaultPort() {
return -1;
}
@Override
public Path resolvePath(final Path f) throws FileNotFoundException,
AccessControlException, UnresolvedLinkException, IOException {
final InodeTree.ResolveResult<AbstractFileSystem> res;
res = fsState.resolve(getUriPath(f), true);
if (res.isInternalDir()) {
return f;
}
return res.targetFileSystem.resolvePath(res.remainingPath);
}
@Override
public FSDataOutputStream createInternal(final Path f,
final EnumSet<CreateFlag> flag, final FsPermission absolutePermission,
final int bufferSize, final short replication, final long blockSize,
final Progressable progress, final int bytesPerChecksum,
final boolean createParent) throws AccessControlException,
FileAlreadyExistsException, FileNotFoundException,
ParentNotDirectoryException, UnsupportedFileSystemException,
UnresolvedLinkException, IOException {
InodeTree.ResolveResult<AbstractFileSystem> res;
try {
res = fsState.resolve(getUriPath(f), false);
} catch (FileNotFoundException e) {
if (createParent) {
throw readOnlyMountTable("create", f);
} else {
throw e;
}
}
assert(res.remainingPath != null);
return res.targetFileSystem.createInternal(res.remainingPath, flag,
absolutePermission, bufferSize, replication,
blockSize, progress, bytesPerChecksum,
createParent);
}
@Override
public boolean delete(final Path f, final boolean recursive)
throws AccessControlException, FileNotFoundException,
UnresolvedLinkException, IOException {
InodeTree.ResolveResult<AbstractFileSystem> 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 new AccessControlException(
"Cannot delete internal mount table directory: " + f);
}
return res.targetFileSystem.delete(res.remainingPath, recursive);
}
@Override
public BlockLocation[] getFileBlockLocations(final Path f, final long start,
final long len) throws AccessControlException, FileNotFoundException,
UnresolvedLinkException, IOException {
InodeTree.ResolveResult<AbstractFileSystem> res =
fsState.resolve(getUriPath(f), true);
return
res.targetFileSystem.getFileBlockLocations(res.remainingPath, start, len);
}
@Override
public FileChecksum getFileChecksum(final Path f)
throws AccessControlException, FileNotFoundException,
UnresolvedLinkException, IOException {
InodeTree.ResolveResult<AbstractFileSystem> res =
fsState.resolve(getUriPath(f), true);
return res.targetFileSystem.getFileChecksum(f);
}
@Override
public FileStatus getFileStatus(final Path f) throws AccessControlException,
FileNotFoundException, UnresolvedLinkException, IOException {
InodeTree.ResolveResult<AbstractFileSystem> 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 ViewFsFileStatus that works around.
FileStatus status = res.targetFileSystem.getFileStatus(res.remainingPath);
return new ViewFsFileStatus(status, this.makeQualified(f));
}
@Override
public FileStatus getFileLinkStatus(final Path f)
throws AccessControlException, FileNotFoundException,
UnsupportedFileSystemException, IOException {
InodeTree.ResolveResult<AbstractFileSystem> res =
fsState.resolve(getUriPath(f), false); // do not follow mount link
return res.targetFileSystem.getFileLinkStatus(res.remainingPath);
}
@Override
public FsStatus getFsStatus() throws AccessControlException,
FileNotFoundException, IOException {
return new FsStatus(0, 0, 0);
}
@Override
public RemoteIterator<FileStatus> listStatusIterator(final Path f)
throws AccessControlException, FileNotFoundException,
UnresolvedLinkException, IOException {
final InodeTree.ResolveResult<AbstractFileSystem> res =
fsState.resolve(getUriPath(f), true);
final RemoteIterator<FileStatus> fsIter =
res.targetFileSystem.listStatusIterator(res.remainingPath);
if (res.isInternalDir()) {
return fsIter;
}
return new RemoteIterator<FileStatus>() {
final RemoteIterator<FileStatus> myIter;
final ChRootedFs targetFs;
{ // Init
myIter = fsIter;
targetFs = (ChRootedFs) res.targetFileSystem;
}
@Override
public boolean hasNext() throws IOException {
return myIter.hasNext();
}
@Override
public FileStatus next() throws IOException {
FileStatus status = myIter.next();
String suffix = targetFs.stripOutRoot(status.getPath());
return new ViewFsFileStatus(status, makeQualified(
suffix.length() == 0 ? f : new Path(res.resolvedPath, suffix)));
}
};
}
@Override
public FileStatus[] listStatus(final Path f) throws AccessControlException,
FileNotFoundException, UnresolvedLinkException, IOException {
InodeTree.ResolveResult<AbstractFileSystem> res =
fsState.resolve(getUriPath(f), true);
FileStatus[] statusLst = res.targetFileSystem.listStatus(res.remainingPath);
if (!res.isInternalDir()) {
// We need to change the name in the FileStatus as described in
// {@link #getFileStatus }
ChRootedFs targetFs;
targetFs = (ChRootedFs) res.targetFileSystem;
int i = 0;
for (FileStatus status : statusLst) {
String suffix = targetFs.stripOutRoot(status.getPath());
statusLst[i++] = new ViewFsFileStatus(status, this.makeQualified(
suffix.length() == 0 ? f : new Path(res.resolvedPath, suffix)));
}
}
return statusLst;
}
@Override
public void mkdir(final Path dir, final FsPermission permission,
final boolean createParent) throws AccessControlException,
FileAlreadyExistsException,
FileNotFoundException, UnresolvedLinkException, IOException {
InodeTree.ResolveResult<AbstractFileSystem> res =
fsState.resolve(getUriPath(dir), false);
res.targetFileSystem.mkdir(res.remainingPath, permission, createParent);
}
@Override
public FSDataInputStream open(final Path f, final int bufferSize)
throws AccessControlException, FileNotFoundException,
UnresolvedLinkException, IOException {
InodeTree.ResolveResult<AbstractFileSystem> res =
fsState.resolve(getUriPath(f), true);
return res.targetFileSystem.open(res.remainingPath, bufferSize);
}
@Override
public void renameInternal(final Path src, final Path dst,
final boolean overwrite) throws IOException, UnresolvedLinkException {
// passing resolveLastComponet as false to catch renaming a mount point
// itself we need to catch this as an internal operation and fail.
InodeTree.ResolveResult<AbstractFileSystem> resSrc =
fsState.resolve(getUriPath(src), false);
if (resSrc.isInternalDir()) {
throw new AccessControlException(
"Cannot Rename within internal dirs of mount table: it is readOnly");
}
InodeTree.ResolveResult<AbstractFileSystem> resDst =
fsState.resolve(getUriPath(dst), false);
if (resDst.isInternalDir()) {
throw new AccessControlException(
"Cannot Rename within internal dirs of mount table: it is readOnly");
}
/**
// 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");
}
resSrc.targetFileSystem.renameInternal(resSrc.remainingPath,
resDst.remainingPath, overwrite);
}
@Override
public void renameInternal(final Path src, final Path dst)
throws AccessControlException, FileAlreadyExistsException,
FileNotFoundException, ParentNotDirectoryException,
UnresolvedLinkException, IOException {
renameInternal(src, dst, false);
}
@Override
public boolean supportsSymlinks() {
return true;
}
@Override
public void createSymlink(final Path target, final Path link,
final boolean createParent) throws IOException, UnresolvedLinkException {
InodeTree.ResolveResult<AbstractFileSystem> res;
try {
res = fsState.resolve(getUriPath(link), false);
} catch (FileNotFoundException e) {
if (createParent) {
throw readOnlyMountTable("createSymlink", link);
} else {
throw e;
}
}
assert(res.remainingPath != null);
res.targetFileSystem.createSymlink(target, res.remainingPath,
createParent);
}
@Override
public Path getLinkTarget(final Path f) throws IOException {
InodeTree.ResolveResult<AbstractFileSystem> res =
fsState.resolve(getUriPath(f), false); // do not follow mount link
return res.targetFileSystem.getLinkTarget(res.remainingPath);
}
@Override
public void setOwner(final Path f, final String username,
final String groupname) throws AccessControlException,
FileNotFoundException, UnresolvedLinkException, IOException {
InodeTree.ResolveResult<AbstractFileSystem> res =
fsState.resolve(getUriPath(f), true);
res.targetFileSystem.setOwner(res.remainingPath, username, groupname);
}
@Override
public void setPermission(final Path f, final FsPermission permission)
throws AccessControlException, FileNotFoundException,
UnresolvedLinkException, IOException {
InodeTree.ResolveResult<AbstractFileSystem> res =
fsState.resolve(getUriPath(f), true);
res.targetFileSystem.setPermission(res.remainingPath, permission);
}
@Override
public boolean setReplication(final Path f, final short replication)
throws AccessControlException, FileNotFoundException,
UnresolvedLinkException, IOException {
InodeTree.ResolveResult<AbstractFileSystem> res =
fsState.resolve(getUriPath(f), true);
return res.targetFileSystem.setReplication(res.remainingPath, replication);
}
@Override
public void setTimes(final Path f, final long mtime, final long atime)
throws AccessControlException, FileNotFoundException,
UnresolvedLinkException, IOException {
InodeTree.ResolveResult<AbstractFileSystem> res =
fsState.resolve(getUriPath(f), true);
res.targetFileSystem.setTimes(res.remainingPath, mtime, atime);
}
@Override
public void setVerifyChecksum(final boolean verifyChecksum)
throws AccessControlException, IOException {
// This is a file system level operations, however ViewFs
// points to many file systems. Noop for ViewFs.
}
public MountPoint[] getMountPoints() {
List<InodeTree.MountPoint<AbstractFileSystem>> 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;
}
@Override
public List<Token<?>> getDelegationTokens(String renewer) throws IOException {
List<InodeTree.MountPoint<AbstractFileSystem>> mountPoints =
fsState.getMountPoints();
int initialListSize = 0;
for (InodeTree.MountPoint<AbstractFileSystem> im : mountPoints) {
initialListSize += im.target.targetDirLinkList.length;
}
List<Token<?>> result = new ArrayList<Token<?>>(initialListSize);
for ( int i = 0; i < mountPoints.size(); ++i ) {
List<Token<?>> tokens =
mountPoints.get(i).target.targetFileSystem.getDelegationTokens(renewer);
if (tokens != null) {
result.addAll(tokens);
}
}
return result;
}
/*
* An instance of this class represents an internal dir of the viewFs
* ie internal dir of the mount table.
* It is a ready only mount tbale and create, mkdir or delete operations
* are not allowed.
* If called on create or mkdir then this target is the parent of the
* directory in which one is trying to create or mkdir; hence
* in this case the path name passed in is the last component.
* Otherwise this target is the end point of the path and hence
* the path name passed in is null.
*/
static class InternalDirOfViewFs extends AbstractFileSystem {
final InodeTree.INodeDir<AbstractFileSystem> theInternalDir;
final long creationTime; // of the the mount table
final UserGroupInformation ugi; // the user/group of user who created mtable
final URI myUri; // the URI of the outer ViewFs
public InternalDirOfViewFs(final InodeTree.INodeDir<AbstractFileSystem> dir,
final long cTime, final UserGroupInformation ugi, final URI uri)
throws URISyntaxException {
super(FsConstants.VIEWFS_URI, FsConstants.VIEWFS_SCHEME, false, -1);
theInternalDir = dir;
creationTime = cTime;
this.ugi = ugi;
myUri = uri;
}
static private void checkPathIsSlash(final Path f) throws IOException {
if (f != InodeTree.SlashPath) {
throw new IOException (
"Internal implementation error: expected file name to be /" );
}
}
@Override
public FSDataOutputStream createInternal(final Path f,
final EnumSet<CreateFlag> flag, final FsPermission absolutePermission,
final int bufferSize, final short replication, final long blockSize,
final Progressable progress, final int bytesPerChecksum,
final boolean createParent) throws AccessControlException,
FileAlreadyExistsException, FileNotFoundException,
ParentNotDirectoryException, UnsupportedFileSystemException,
UnresolvedLinkException, IOException {
throw readOnlyMountTable("create", f);
}
@Override
public boolean delete(final Path f, final boolean recursive)
throws AccessControlException, IOException {
checkPathIsSlash(f);
throw readOnlyMountTable("delete", f);
}
@Override
public BlockLocation[] getFileBlockLocations(final Path f, final long start,
final long len) throws FileNotFoundException, IOException {
checkPathIsSlash(f);
throw new FileNotFoundException("Path points to dir not a file");
}
@Override
public FileChecksum getFileChecksum(final Path f)
throws FileNotFoundException, IOException {
checkPathIsSlash(f);
throw new FileNotFoundException("Path points to dir not a file");
}
@Override
public FileStatus getFileStatus(final Path f) throws IOException {
checkPathIsSlash(f);
return new FileStatus(0, true, 0, 0, creationTime, creationTime,
PERMISSION_RRR, ugi.getUserName(), ugi.getGroupNames()[0],
new Path(theInternalDir.fullPath).makeQualified(
myUri, null));
}
@Override
public FileStatus getFileLinkStatus(final Path f)
throws FileNotFoundException {
// look up i internalDirs children - ignore first Slash
INode<AbstractFileSystem> inode =
theInternalDir.children.get(f.toUri().toString().substring(1));
if (inode == null) {
throw new FileNotFoundException(
"viewFs internal mount table - missing entry:" + f);
}
FileStatus result;
if (inode instanceof INodeLink) {
INodeLink<AbstractFileSystem> inodelink =
(INodeLink<AbstractFileSystem>) inode;
result = new FileStatus(0, false, 0, 0, creationTime, creationTime,
PERMISSION_RRR, ugi.getUserName(), ugi.getGroupNames()[0],
inodelink.getTargetLink(),
new Path(inode.fullPath).makeQualified(
myUri, null));
} else {
result = new FileStatus(0, true, 0, 0, creationTime, creationTime,
PERMISSION_RRR, ugi.getUserName(), ugi.getGroupNames()[0],
new Path(inode.fullPath).makeQualified(
myUri, null));
}
return result;
}
@Override
public FsStatus getFsStatus() {
return new FsStatus(0, 0, 0);
}
@Override
public FsServerDefaults getServerDefaults() throws IOException {
throw new IOException("FsServerDefaults not implemented yet");
}
@Override
public int getUriDefaultPort() {
return -1;
}
@Override
public FileStatus[] listStatus(final Path f) throws AccessControlException,
IOException {
checkPathIsSlash(f);
FileStatus[] result = new FileStatus[theInternalDir.children.size()];
int i = 0;
for (Entry<String, INode<AbstractFileSystem>> iEntry :
theInternalDir.children.entrySet()) {
INode<AbstractFileSystem> inode = iEntry.getValue();
if (inode instanceof INodeLink ) {
INodeLink<AbstractFileSystem> link =
(INodeLink<AbstractFileSystem>) inode;
result[i++] = new FileStatus(0, false, 0, 0,
creationTime, creationTime,
PERMISSION_RRR, ugi.getUserName(), ugi.getGroupNames()[0],
link.getTargetLink(),
new Path(inode.fullPath).makeQualified(
myUri, null));
} else {
result[i++] = new FileStatus(0, true, 0, 0,
creationTime, creationTime,
PERMISSION_RRR, ugi.getUserName(), ugi.getGroupNames()[0],
new Path(inode.fullPath).makeQualified(
myUri, null));
}
}
return result;
}
@Override
public void mkdir(final Path dir, final FsPermission permission,
final boolean createParent) throws AccessControlException,
FileAlreadyExistsException {
if (theInternalDir.isRoot & dir == null) {
throw new FileAlreadyExistsException("/ already exits");
}
throw readOnlyMountTable("mkdir", dir);
}
@Override
public FSDataInputStream open(final Path f, final int bufferSize)
throws FileNotFoundException, IOException {
checkPathIsSlash(f);
throw new FileNotFoundException("Path points to dir not a file");
}
@Override
public void renameInternal(final Path src, final Path dst)
throws AccessControlException, IOException {
checkPathIsSlash(src);
checkPathIsSlash(dst);
throw readOnlyMountTable("rename", src);
}
@Override
public boolean supportsSymlinks() {
return true;
}
@Override
public void createSymlink(final Path target, final Path link,
final boolean createParent) throws AccessControlException {
throw readOnlyMountTable("createSymlink", link);
}
@Override
public Path getLinkTarget(final Path f) throws FileNotFoundException,
IOException {
return getFileLinkStatus(f).getSymlink();
}
@Override
public void setOwner(final Path f, final String username,
final String groupname) throws AccessControlException, IOException {
checkPathIsSlash(f);
throw readOnlyMountTable("setOwner", f);
}
@Override
public void setPermission(final Path f, final FsPermission permission)
throws AccessControlException, IOException {
checkPathIsSlash(f);
throw readOnlyMountTable("setPermission", f);
}
@Override
public boolean setReplication(final Path f, final short replication)
throws AccessControlException, IOException {
checkPathIsSlash(f);
throw readOnlyMountTable("setReplication", f);
}
@Override
public void setTimes(final Path f, final long mtime, final long atime)
throws AccessControlException, IOException {
checkPathIsSlash(f);
throw readOnlyMountTable("setTimes", f);
}
@Override
public void setVerifyChecksum(final boolean verifyChecksum)
throws AccessControlException {
throw readOnlyMountTable("setVerifyChecksum", "");
}
}
}

125
src/java/org/apache/hadoop/fs/viewfs/ViewFsFileStatus.java Normal file
View File

@ -0,0 +1,125 @@
/**
* 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 java.io.IOException;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsPermission;
/**
* This class is needed to address the problem described in
* {@link ViewFileSystem#getFileStatus(org.apache.hadoop.fs.Path)} and
* {@link ViewFs#getFileStatus(org.apache.hadoop.fs.Path)}
*/
class ViewFsFileStatus extends FileStatus {
final FileStatus myFs;
Path modifiedPath;
ViewFsFileStatus(FileStatus fs, Path newPath) {
myFs = fs;
modifiedPath = newPath;
}
@Override
public boolean equals(Object o) {
return super.equals(o);
}
public int hashCode() {
return super.hashCode();
}
@Override
public long getLen() {
return myFs.getLen();
}
@Override
public boolean isFile() {
return myFs.isFile();
}
@Override
public boolean isDirectory() {
return myFs.isDirectory();
}
@Override
@SuppressWarnings("deprecation")
public boolean isDir() {
return myFs.isDirectory();
}
@Override
public boolean isSymlink() {
return myFs.isSymlink();
}
@Override
public long getBlockSize() {
return myFs.getBlockSize();
}
@Override
public short getReplication() {
return myFs.getReplication();
}
@Override
public long getModificationTime() {
return myFs.getModificationTime();
}
@Override
public long getAccessTime() {
return myFs.getAccessTime();
}
@Override
public FsPermission getPermission() {
return myFs.getPermission();
}
@Override
public String getOwner() {
return myFs.getOwner();
}
@Override
public String getGroup() {
return myFs.getGroup();
}
@Override
public Path getPath() {
return modifiedPath;
}
@Override
public void setPath(final Path p) {
modifiedPath = p;
}
@Override
public Path getSymlink() throws IOException {
return myFs.getSymlink();
}
}

1
src/test/core/org/apache/hadoop/fs/FSMainOperationsBaseTest.java
View File

@ -90,7 +90,6 @@ public abstract class FSMainOperationsBaseTest {
@After
public void tearDown() throws Exception {
fSys.delete(new Path(getAbsoluteTestRootPath(fSys), new Path("test")), true);
fSys.delete(new Path(LOCAL_FS_ROOT_URI), true);
}

9
src/test/core/org/apache/hadoop/fs/FileContextPermissionBase.java
View File

@ -93,7 +93,8 @@ public abstract class FileContextPermissionBase {
return;
}
String filename = "foo";
Path f = createFile(fc, filename);
Path f = getTestRootPath(fc, filename);
createFile(fc, filename);
doFilePermissionCheck(FileContext.DEFAULT_PERM.applyUMask(fc.getUMask()),
fc.getFileStatus(f).getPermission());
}
@ -107,7 +108,8 @@ public abstract class FileContextPermissionBase {
}
String filename = "foo";
Path f = createFile(fc, filename);
Path f = getTestRootPath(fc, filename);
createFile(fc, f);
try {
// create files and manipulate them.
@ -131,7 +133,8 @@ public abstract class FileContextPermissionBase {
}
String filename = "bar";
Path f = createFile(fc, filename);
Path f = getTestRootPath(fc, filename);
createFile(fc, f);
List<String> groups = null;
try {
groups = getGroups();

24
src/test/core/org/apache/hadoop/fs/FileContextTestHelper.java
View File

@ -92,7 +92,7 @@ public final class FileContextTestHelper {
/*
* Create files with numBlocks blocks each with block size blockSize.
*/
public static void createFile(FileContext fc, Path path, int numBlocks,
public static long createFile(FileContext fc, Path path, int numBlocks,
CreateOpts... options) throws IOException {
BlockSize blockSizeOpt =
(BlockSize) CreateOpts.getOpt(CreateOpts.BlockSize.class, options);
@ -103,33 +103,33 @@ public final class FileContextTestHelper {
byte[] data = getFileData(numBlocks, blockSize);
out.write(data, 0, data.length);
out.close();
return data.length;
}
public static void createFile(FileContext fc, Path path, int numBlocks,
public static long createFile(FileContext fc, Path path, int numBlocks,
int blockSize) throws IOException {
createFile(fc, path, numBlocks, CreateOpts.blockSize(blockSize),
return createFile(fc, path, numBlocks, CreateOpts.blockSize(blockSize),
CreateOpts.createParent());
}
public static void createFile(FileContext fc, Path path) throws IOException {
createFile(fc, path, DEFAULT_NUM_BLOCKS, CreateOpts.createParent());
public static long createFile(FileContext fc, Path path) throws IOException {
return createFile(fc, path, DEFAULT_NUM_BLOCKS, CreateOpts.createParent());
}
public static Path createFile(FileContext fc, String name) throws IOException {
public static long createFile(FileContext fc, String name) throws IOException {
Path path = getTestRootPath(fc, name);
createFile(fc, path);
return path;
return createFile(fc, path);
}
public static void createFileNonRecursive(FileContext fc, String name)
public static long createFileNonRecursive(FileContext fc, String name)
throws IOException {
Path path = getTestRootPath(fc, name);
createFileNonRecursive(fc, path);
return createFileNonRecursive(fc, path);
}
public static void createFileNonRecursive(FileContext fc, Path path)
public static long createFileNonRecursive(FileContext fc, Path path)
throws IOException {
createFile(fc, path, DEFAULT_NUM_BLOCKS, CreateOpts.donotCreateParent());
return createFile(fc, path, DEFAULT_NUM_BLOCKS, CreateOpts.donotCreateParent());
}
public static void appendToFile(FileContext fc, Path path, int numBlocks,

16
src/test/core/org/apache/hadoop/fs/FileSystemTestHelper.java
View File

@ -98,7 +98,7 @@ public final class FileSystemTestHelper {
/*
* Create files with numBlocks blocks each with block size blockSize.
*/
public static void createFile(FileSystem fSys, Path path, int numBlocks,
public static long createFile(FileSystem fSys, Path path, int numBlocks,
int blockSize, boolean createParent) throws IOException {
FSDataOutputStream out =
fSys.create(path, false, 4096, fSys.getDefaultReplication(), blockSize );
@ -106,21 +106,21 @@ public final class FileSystemTestHelper {
byte[] data = getFileData(numBlocks, blockSize);
out.write(data, 0, data.length);
out.close();
return data.length;
}
public static void createFile(FileSystem fSys, Path path, int numBlocks,
public static long createFile(FileSystem fSys, Path path, int numBlocks,
int blockSize) throws IOException {
createFile(fSys, path, numBlocks, blockSize, true);
return createFile(fSys, path, numBlocks, blockSize, true);
}
public static void createFile(FileSystem fSys, Path path) throws IOException {
createFile(fSys, path, DEFAULT_NUM_BLOCKS, DEFAULT_BLOCK_SIZE, true);
public static long createFile(FileSystem fSys, Path path) throws IOException {
return createFile(fSys, path, DEFAULT_NUM_BLOCKS, DEFAULT_BLOCK_SIZE, true);
}
public static Path createFile(FileSystem fSys, String name) throws IOException {
public static long createFile(FileSystem fSys, String name) throws IOException {
Path path = getTestRootPath(fSys, name);
createFile(fSys, path);
return path;
return createFile(fSys, path);
}
public static boolean exists(FileSystem fSys, Path p) throws IOException {

291
src/test/core/org/apache/hadoop/fs/viewfs/TestChRootedFileSystem.java Normal file
View File

@ -0,0 +1,291 @@
/**
* 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 java.io.IOException;
import java.net.URI;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileStatus;
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.viewfs.ChRootedFileSystem;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
public class TestChRootedFileSystem {
FileSystem fSys; // The ChRoootedFs
FileSystem fSysTarget; //
Path chrootedTo;
@Before
public void setUp() throws Exception {
// create the test root on local_fs
Configuration conf = new Configuration();
fSysTarget = FileSystem.getLocal(conf);
chrootedTo = FileSystemTestHelper.getAbsoluteTestRootPath(fSysTarget);
// In case previous test was killed before cleanup
fSysTarget.delete(chrootedTo, true);
fSysTarget.mkdirs(chrootedTo);
// ChRoot to the root of the testDirectory
fSys = new ChRootedFileSystem(fSysTarget, chrootedTo);
}
@After
public void tearDown() throws Exception {
fSysTarget.delete(chrootedTo, true);
}
@Test
public void testURI() {
URI uri = fSys.getUri();
Assert.assertEquals(chrootedTo.toUri(), uri);
}
@Test
public void testBasicPaths() {
URI uri = fSys.getUri();
Assert.assertEquals(chrootedTo.toUri(), uri);
Assert.assertEquals(fSys.makeQualified(
new Path("/user/" + System.getProperty("user.name"))),
fSys.getWorkingDirectory());
Assert.assertEquals(fSys.makeQualified(
new Path("/user/" + System.getProperty("user.name"))),
fSys.getHomeDirectory());
/*
* ChRootedFs as its uri like file:///chrootRoot.
* This is questionable since path.makequalified(uri, path) ignores
* the pathPart of a uri. So our notion of chrooted URI is questionable.
* But if we were to fix Path#makeQualified() then the next test should
* have been:
Assert.assertEquals(
new Path(chrootedTo + "/foo/bar").makeQualified(
FsConstants.LOCAL_FS_URI, null),
fSys.makeQualified(new Path( "/foo/bar")));
*/
Assert.assertEquals(
new Path("/foo/bar").makeQualified(FsConstants.LOCAL_FS_URI, null),
fSys.makeQualified(new Path("/foo/bar")));
}
/**
* Test modify operations (create, mkdir, delete, etc)
*
* Verify the operation via chrootedfs (ie fSys) and *also* via the
* target file system (ie fSysTarget) that has been chrooted.
*/
@Test
public void testCreateDelete() throws IOException {
// Create file
FileSystemTestHelper.createFile(fSys, "/foo");
Assert.assertTrue(fSys.isFile(new Path("/foo")));
Assert.assertTrue(fSysTarget.isFile(new Path(chrootedTo, "foo")));
// Create file with recursive dir
FileSystemTestHelper.createFile(fSys, "/newDir/foo");
Assert.assertTrue(fSys.isFile(new Path("/newDir/foo")));
Assert.assertTrue(fSysTarget.isFile(new Path(chrootedTo,"newDir/foo")));
// Delete the created file
Assert.assertTrue(fSys.delete(new Path("/newDir/foo"), false));
Assert.assertFalse(fSys.exists(new Path("/newDir/foo")));
Assert.assertFalse(fSysTarget.exists(new Path(chrootedTo, "newDir/foo")));
// Create file with a 2 component dirs recursively
FileSystemTestHelper.createFile(fSys, "/newDir/newDir2/foo");
Assert.assertTrue(fSys.isFile(new Path("/newDir/newDir2/foo")));
Assert.assertTrue(fSysTarget.isFile(new Path(chrootedTo,"newDir/newDir2/foo")));
// Delete the created file
Assert.assertTrue(fSys.delete(new Path("/newDir/newDir2/foo"), false));
Assert.assertFalse(fSys.exists(new Path("/newDir/newDir2/foo")));
Assert.assertFalse(fSysTarget.exists(new Path(chrootedTo,"newDir/newDir2/foo")));
}
@Test
public void testMkdirDelete() throws IOException {
fSys.mkdirs(FileSystemTestHelper.getTestRootPath(fSys, "/dirX"));
Assert.assertTrue(fSys.isDirectory(new Path("/dirX")));
Assert.assertTrue(fSysTarget.isDirectory(new Path(chrootedTo,"dirX")));
fSys.mkdirs(FileSystemTestHelper.getTestRootPath(fSys, "/dirX/dirY"));
Assert.assertTrue(fSys.isDirectory(new Path("/dirX/dirY")));
Assert.assertTrue(fSysTarget.isDirectory(new Path(chrootedTo,"dirX/dirY")));
// Delete the created dir
Assert.assertTrue(fSys.delete(new Path("/dirX/dirY"), false));
Assert.assertFalse(fSys.exists(new Path("/dirX/dirY")));
Assert.assertFalse(fSysTarget.exists(new Path(chrootedTo,"dirX/dirY")));
Assert.assertTrue(fSys.delete(new Path("/dirX"), false));
Assert.assertFalse(fSys.exists(new Path("/dirX")));
Assert.assertFalse(fSysTarget.exists(new Path(chrootedTo,"dirX")));
}
@Test
public void testRename() throws IOException {
// Rename a file
FileSystemTestHelper.createFile(fSys, "/newDir/foo");
fSys.rename(new Path("/newDir/foo"), new Path("/newDir/fooBar"));
Assert.assertFalse(fSys.exists(new Path("/newDir/foo")));
Assert.assertFalse(fSysTarget.exists(new Path(chrootedTo,"newDir/foo")));
Assert.assertTrue(fSys.isFile(FileSystemTestHelper.getTestRootPath(fSys,"/newDir/fooBar")));
Assert.assertTrue(fSysTarget.isFile(new Path(chrootedTo,"newDir/fooBar")));
// Rename a dir
fSys.mkdirs(new Path("/newDir/dirFoo"));
fSys.rename(new Path("/newDir/dirFoo"), new Path("/newDir/dirFooBar"));
Assert.assertFalse(fSys.exists(new Path("/newDir/dirFoo")));
Assert.assertFalse(fSysTarget.exists(new Path(chrootedTo,"newDir/dirFoo")));
Assert.assertTrue(fSys.isDirectory(FileSystemTestHelper.getTestRootPath(fSys,"/newDir/dirFooBar")));
Assert.assertTrue(fSysTarget.isDirectory(new Path(chrootedTo,"newDir/dirFooBar")));
}
/**
* We would have liked renames across file system to fail but
* Unfortunately there is not way to distinguish the two file systems
* @throws IOException
*/
@Test
public void testRenameAcrossFs() throws IOException {
fSys.mkdirs(new Path("/newDir/dirFoo"));
fSys.rename(new Path("/newDir/dirFoo"), new Path("file:///tmp/dirFooBar"));
FileSystemTestHelper.isDir(fSys, new Path("/tmp/dirFooBar"));
}
@Test
public void testList() throws IOException {
FileStatus fs = fSys.getFileStatus(new Path("/"));
Assert.assertTrue(fs.isDirectory());
// should return the full path not the chrooted path
Assert.assertEquals(fs.getPath(), chrootedTo);
// list on Slash
FileStatus[] dirPaths = fSys.listStatus(new Path("/"));
Assert.assertEquals(0, dirPaths.length);
FileSystemTestHelper.createFile(fSys, "/foo");
FileSystemTestHelper.createFile(fSys, "/bar");
fSys.mkdirs(new Path("/dirX"));
fSys.mkdirs(FileSystemTestHelper.getTestRootPath(fSys, "/dirY"));
fSys.mkdirs(new Path("/dirX/dirXX"));
dirPaths = fSys.listStatus(new Path("/"));
Assert.assertEquals(4, dirPaths.length); // note 2 crc files
// Note the the file status paths are the full paths on target
fs = FileSystemTestHelper.containsPath(new Path(chrootedTo, "foo"), dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue(fs.isFile());
fs = FileSystemTestHelper.containsPath(new Path(chrootedTo, "bar"), dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue(fs.isFile());
fs = FileSystemTestHelper.containsPath(new Path(chrootedTo, "dirX"), dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue(fs.isDirectory());
fs = FileSystemTestHelper.containsPath(new Path(chrootedTo, "dirY"), dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue(fs.isDirectory());
}
@Test
public void testWorkingDirectory() throws Exception {
// First we cd to our test root
fSys.mkdirs(new Path("/testWd"));
Path workDir = new Path("/testWd");
fSys.setWorkingDirectory(workDir);
Assert.assertEquals(workDir, fSys.getWorkingDirectory());
fSys.setWorkingDirectory(new Path("."));
Assert.assertEquals(workDir, fSys.getWorkingDirectory());
fSys.setWorkingDirectory(new Path(".."));
Assert.assertEquals(workDir.getParent(), fSys.getWorkingDirectory());
// cd using a relative path
// Go back to our test root
workDir = new Path("/testWd");
fSys.setWorkingDirectory(workDir);
Assert.assertEquals(workDir, fSys.getWorkingDirectory());
Path relativeDir = new Path("existingDir1");
Path absoluteDir = new Path(workDir,"existingDir1");
fSys.mkdirs(absoluteDir);
fSys.setWorkingDirectory(relativeDir);
Assert.assertEquals(absoluteDir, fSys.getWorkingDirectory());
// cd using a absolute path
absoluteDir = new Path("/test/existingDir2");
fSys.mkdirs(absoluteDir);
fSys.setWorkingDirectory(absoluteDir);
Assert.assertEquals(absoluteDir, fSys.getWorkingDirectory());
// Now open a file relative to the wd we just set above.
Path absoluteFooPath = new Path(absoluteDir, "foo");
fSys.create(absoluteFooPath).close();
fSys.open(new Path("foo")).close();
// Now mkdir relative to the dir we cd'ed to
fSys.mkdirs(new Path("newDir"));
Assert.assertTrue(fSys.isDirectory(new Path(absoluteDir, "newDir")));
/* Filesystem impls (RawLocal and DistributedFileSystem do not check
* for existing of working dir
absoluteDir = getTestRootPath(fSys, "nonexistingPath");
try {
fSys.setWorkingDirectory(absoluteDir);
Assert.fail("cd to non existing dir should have failed");
} catch (Exception e) {
// Exception as expected
}
*/
// Try a URI
final String LOCAL_FS_ROOT_URI = "file:///tmp/test";
absoluteDir = new Path(LOCAL_FS_ROOT_URI + "/existingDir");
fSys.mkdirs(absoluteDir);
fSys.setWorkingDirectory(absoluteDir);
Assert.assertEquals(absoluteDir, fSys.getWorkingDirectory());
}
}

292
src/test/core/org/apache/hadoop/fs/viewfs/TestChRootedFs.java Normal file
View File

@ -0,0 +1,292 @@
/**
* 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 java.io.IOException;
import java.net.URI;
import java.util.EnumSet;
import static org.apache.hadoop.fs.FileContextTestHelper.*;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.CreateFlag;
import org.apache.hadoop.fs.FileContext;
import org.apache.hadoop.fs.FileContextTestHelper;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FsConstants;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.viewfs.ChRootedFs;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
public class TestChRootedFs {
FileContext fc; // The ChRoootedFs
FileContext fcTarget; //
Path chrootedTo;
@Before
public void setUp() throws Exception {
// create the test root on local_fs
fcTarget = FileContext.getLocalFSFileContext();
chrootedTo = FileContextTestHelper.getAbsoluteTestRootPath(fcTarget);
// In case previous test was killed before cleanup
fcTarget.delete(chrootedTo, true);
fcTarget.mkdir(chrootedTo, FileContext.DEFAULT_PERM, true);
Configuration conf = new Configuration();
// ChRoot to the root of the testDirectory
fc = FileContext.getFileContext(
new ChRootedFs(fcTarget.getDefaultFileSystem(), chrootedTo), conf);
}
@After
public void tearDown() throws Exception {
fcTarget.delete(chrootedTo, true);
}
@Test
public void testBasicPaths() {
URI uri = fc.getDefaultFileSystem().getUri();
Assert.assertEquals(chrootedTo.toUri(), uri);
Assert.assertEquals(fc.makeQualified(
new Path("/user/" + System.getProperty("user.name"))),
fc.getWorkingDirectory());
Assert.assertEquals(fc.makeQualified(
new Path("/user/" + System.getProperty("user.name"))),
fc.getHomeDirectory());
/*
* ChRootedFs as its uri like file:///chrootRoot.
* This is questionable since path.makequalified(uri, path) ignores
* the pathPart of a uri. So our notion of chrooted URI is questionable.
* But if we were to fix Path#makeQualified() then the next test should
* have been:
Assert.assertEquals(
new Path(chrootedTo + "/foo/bar").makeQualified(
FsConstants.LOCAL_FS_URI, null),
fc.makeQualified(new Path( "/foo/bar")));
*/
Assert.assertEquals(
new Path("/foo/bar").makeQualified(FsConstants.LOCAL_FS_URI, null),
fc.makeQualified(new Path("/foo/bar")));
}
/**
* Test modify operations (create, mkdir, delete, etc)
*
* Verify the operation via chrootedfs (ie fc) and *also* via the
* target file system (ie fclocal) that has been chrooted.
*/
@Test
public void testCreateDelete() throws IOException {
// Create file
FileContextTestHelper.createFileNonRecursive(fc, "/foo");
Assert.assertTrue(isFile(fc, new Path("/foo")));
Assert.assertTrue(isFile(fcTarget, new Path(chrootedTo, "foo")));
// Create file with recursive dir
FileContextTestHelper.createFile(fc, "/newDir/foo");
Assert.assertTrue(isFile(fc, new Path("/newDir/foo")));
Assert.assertTrue(isFile(fcTarget, new Path(chrootedTo,"newDir/foo")));
// Delete the created file
Assert.assertTrue(fc.delete(new Path("/newDir/foo"), false));
Assert.assertFalse(exists(fc, new Path("/newDir/foo")));
Assert.assertFalse(exists(fcTarget, new Path(chrootedTo,"newDir/foo")));
// Create file with a 2 component dirs recursively
FileContextTestHelper.createFile(fc, "/newDir/newDir2/foo");
Assert.assertTrue(isFile(fc, new Path("/newDir/newDir2/foo")));
Assert.assertTrue(isFile(fcTarget, new Path(chrootedTo,"newDir/newDir2/foo")));
// Delete the created file
Assert.assertTrue(fc.delete(new Path("/newDir/newDir2/foo"), false));
Assert.assertFalse(exists(fc, new Path("/newDir/newDir2/foo")));
Assert.assertFalse(exists(fcTarget, new Path(chrootedTo,"newDir/newDir2/foo")));
}
@Test
public void testMkdirDelete() throws IOException {
fc.mkdir(FileContextTestHelper.getTestRootPath(fc, "/dirX"), FileContext.DEFAULT_PERM, false);
Assert.assertTrue(isDir(fc, new Path("/dirX")));
Assert.assertTrue(isDir(fcTarget, new Path(chrootedTo,"dirX")));
fc.mkdir(FileContextTestHelper.getTestRootPath(fc, "/dirX/dirY"), FileContext.DEFAULT_PERM, false);
Assert.assertTrue(isDir(fc, new Path("/dirX/dirY")));
Assert.assertTrue(isDir(fcTarget, new Path(chrootedTo,"dirX/dirY")));
// Delete the created dir
Assert.assertTrue(fc.delete(new Path("/dirX/dirY"), false));
Assert.assertFalse(exists(fc, new Path("/dirX/dirY")));
Assert.assertFalse(exists(fcTarget, new Path(chrootedTo,"dirX/dirY")));
Assert.assertTrue(fc.delete(new Path("/dirX"), false));
Assert.assertFalse(exists(fc, new Path("/dirX")));
Assert.assertFalse(exists(fcTarget, new Path(chrootedTo,"dirX")));
}
@Test
public void testRename() throws IOException {
// Rename a file
FileContextTestHelper.createFile(fc, "/newDir/foo");
fc.rename(new Path("/newDir/foo"), new Path("/newDir/fooBar"));
Assert.assertFalse(exists(fc, new Path("/newDir/foo")));
Assert.assertFalse(exists(fcTarget, new Path(chrootedTo,"newDir/foo")));
Assert.assertTrue(isFile(fc, FileContextTestHelper.getTestRootPath(fc,"/newDir/fooBar")));
Assert.assertTrue(isFile(fcTarget, new Path(chrootedTo,"newDir/fooBar")));
// Rename a dir
fc.mkdir(new Path("/newDir/dirFoo"), FileContext.DEFAULT_PERM, false);
fc.rename(new Path("/newDir/dirFoo"), new Path("/newDir/dirFooBar"));
Assert.assertFalse(exists(fc, new Path("/newDir/dirFoo")));
Assert.assertFalse(exists(fcTarget, new Path(chrootedTo,"newDir/dirFoo")));
Assert.assertTrue(isDir(fc, FileContextTestHelper.getTestRootPath(fc,"/newDir/dirFooBar")));
Assert.assertTrue(isDir(fcTarget, new Path(chrootedTo,"newDir/dirFooBar")));
}
/**
* We would have liked renames across file system to fail but
* Unfortunately there is not way to distinguish the two file systems
* @throws IOException
*/
@Test
public void testRenameAcrossFs() throws IOException {
fc.mkdir(new Path("/newDir/dirFoo"), FileContext.DEFAULT_PERM, true);
// the root will get interpreted to the root of the chrooted fs.
fc.rename(new Path("/newDir/dirFoo"), new Path("file:///dirFooBar"));
FileContextTestHelper.isDir(fc, new Path("/dirFooBar"));
}
@Test
public void testList() throws IOException {
FileStatus fs = fc.getFileStatus(new Path("/"));
Assert.assertTrue(fs.isDirectory());
// should return the full path not the chrooted path
Assert.assertEquals(fs.getPath(), chrootedTo);
// list on Slash
FileStatus[] dirPaths = fc.util().listStatus(new Path("/"));
Assert.assertEquals(0, dirPaths.length);
FileContextTestHelper.createFileNonRecursive(fc, "/foo");
FileContextTestHelper.createFileNonRecursive(fc, "/bar");
fc.mkdir(new Path("/dirX"), FileContext.DEFAULT_PERM, false);
fc.mkdir(FileContextTestHelper.getTestRootPath(fc, "/dirY"),
FileContext.DEFAULT_PERM, false);
fc.mkdir(new Path("/dirX/dirXX"), FileContext.DEFAULT_PERM, false);
dirPaths = fc.util().listStatus(new Path("/"));
Assert.assertEquals(4, dirPaths.length);
// Note the the file status paths are the full paths on target
fs = FileContextTestHelper.containsPath(fcTarget, "foo", dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue(fs.isFile());
fs = FileContextTestHelper.containsPath(fcTarget, "bar", dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue(fs.isFile());
fs = FileContextTestHelper.containsPath(fcTarget, "dirX", dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue(fs.isDirectory());
fs = FileContextTestHelper.containsPath(fcTarget, "dirY", dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue(fs.isDirectory());
}
@Test
public void testWorkingDirectory() throws Exception {
// First we cd to our test root
fc.mkdir(new Path("/testWd"), FileContext.DEFAULT_PERM, false);
Path workDir = new Path("/testWd");
Path fqWd = fc.makeQualified(workDir);
fc.setWorkingDirectory(workDir);
Assert.assertEquals(fqWd, fc.getWorkingDirectory());
fc.setWorkingDirectory(new Path("."));
Assert.assertEquals(fqWd, fc.getWorkingDirectory());
fc.setWorkingDirectory(new Path(".."));
Assert.assertEquals(fqWd.getParent(), fc.getWorkingDirectory());
// cd using a relative path
// Go back to our test root
workDir = new Path("/testWd");
fqWd = fc.makeQualified(workDir);
fc.setWorkingDirectory(workDir);
Assert.assertEquals(fqWd, fc.getWorkingDirectory());
Path relativeDir = new Path("existingDir1");
Path absoluteDir = new Path(workDir,"existingDir1");
fc.mkdir(absoluteDir, FileContext.DEFAULT_PERM, true);
Path fqAbsoluteDir = fc.makeQualified(absoluteDir);
fc.setWorkingDirectory(relativeDir);
Assert.assertEquals(fqAbsoluteDir, fc.getWorkingDirectory());
// cd using a absolute path
absoluteDir = new Path("/test/existingDir2");
fqAbsoluteDir = fc.makeQualified(absoluteDir);
fc.mkdir(absoluteDir, FileContext.DEFAULT_PERM, true);
fc.setWorkingDirectory(absoluteDir);
Assert.assertEquals(fqAbsoluteDir, fc.getWorkingDirectory());
// Now open a file relative to the wd we just set above.
Path absolutePath = new Path(absoluteDir, "foo");
fc.create(absolutePath, EnumSet.of(CreateFlag.CREATE)).close();
fc.open(new Path("foo")).close();
// Now mkdir relative to the dir we cd'ed to
fc.mkdir(new Path("newDir"), FileContext.DEFAULT_PERM, true);
Assert.assertTrue(isDir(fc, new Path(absoluteDir, "newDir")));
absoluteDir = getTestRootPath(fc, "nonexistingPath");
try {
fc.setWorkingDirectory(absoluteDir);
Assert.fail("cd to non existing dir should have failed");
} catch (Exception e) {
// Exception as expected
}
// Try a URI
final String LOCAL_FS_ROOT_URI = "file:///tmp/test";
absoluteDir = new Path(LOCAL_FS_ROOT_URI + "/existingDir");
fc.mkdir(absoluteDir, FileContext.DEFAULT_PERM, true);
fc.setWorkingDirectory(absoluteDir);
Assert.assertEquals(absoluteDir, fc.getWorkingDirectory());
}
}

60
src/test/core/org/apache/hadoop/fs/viewfs/TestFSMainOperationsLocalFileSystem.java Normal file
View File

@ -0,0 +1,60 @@
/**
* 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 java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FSMainOperationsBaseTest;
import org.apache.hadoop.fs.FileSystemTestHelper;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
public class TestFSMainOperationsLocalFileSystem extends FSMainOperationsBaseTest {
static FileSystem fcTarget;
@Before
public void setUp() throws Exception {
Configuration conf = new Configuration();
fcTarget = FileSystem.getLocal(conf);
fSys = ViewFileSystemTestSetup.setupForViewFs(fcTarget);
super.setUp();
}
@After
public void tearDown() throws Exception {
super.tearDown();
ViewFileSystemTestSetup.tearDownForViewFs(fcTarget);
}
@Test
@Override
public void testWDAbsolute() throws IOException {
Path absoluteDir = FileSystemTestHelper.getTestRootPath(fSys,
"test/existingDir");
fSys.mkdirs(absoluteDir);
fSys.setWorkingDirectory(absoluteDir);
Assert.assertEquals(absoluteDir, fSys.getWorkingDirectory());
}
}

42
src/test/core/org/apache/hadoop/fs/viewfs/TestFcCreateMkdirLocalFs.java Normal file
View File

@ -0,0 +1,42 @@
/**
* 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 org.apache.hadoop.fs.FileContextCreateMkdirBaseTest;
import org.junit.After;
import org.junit.Before;
public class TestFcCreateMkdirLocalFs extends
FileContextCreateMkdirBaseTest {
@Before
public void setUp() throws Exception {
fc = ViewFsTestSetup.setupForViewFsLocalFs();
super.setUp();
}
@After
public void tearDown() throws Exception {
super.tearDown();
ViewFsTestSetup.tearDownForViewFsLocalFs();
}
}

87
src/test/core/org/apache/hadoop/fs/viewfs/TestFcMainOperationsLocalFs.java Normal file
View File

@ -0,0 +1,87 @@
/**
* 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 org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileContext;
import org.apache.hadoop.fs.FileContextMainOperationsBaseTest;
import org.apache.hadoop.fs.FileContextTestHelper;
import org.apache.hadoop.fs.FsConstants;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.viewfs.ConfigUtil;
import org.junit.After;
import org.junit.Before;
public class TestFcMainOperationsLocalFs extends
FileContextMainOperationsBaseTest {
FileContext fclocal;
Path targetOfTests;
@Before
public void setUp() throws Exception {
/**
* create the test root on local_fs - the mount table will point here
*/
fclocal = FileContext.getLocalFSFileContext();
targetOfTests = FileContextTestHelper.getTestRootPath(fclocal);
// In case previous test was killed before cleanup
fclocal.delete(targetOfTests, true);
fclocal.mkdir(targetOfTests, FileContext.DEFAULT_PERM, true);
// We create mount table so that the test root on the viewFs points to
// to the test root on the target.
// DOing this helps verify the FileStatus.path.
//
// The test root by default when running eclipse
// is a test dir below the working directory.
// (see FileContextTestHelper).
// Since viewFs has no built-in wd, its wd is /user/<username>.
// If this test launched via ant (build.xml) the test root is absolute path
String srcTestRoot;
if (FileContextTestHelper.TEST_ROOT_DIR.startsWith("/")) {
srcTestRoot = FileContextTestHelper.TEST_ROOT_DIR;
} else {
srcTestRoot = "/user/" + System.getProperty("user.name") + "/" +
FileContextTestHelper.TEST_ROOT_DIR;
}
Configuration conf = new Configuration();
ConfigUtil.addLink(conf, srcTestRoot,
targetOfTests.toUri());
fc = FileContext.getFileContext(FsConstants.VIEWFS_URI, conf);
//System.out.println("SRCOfTests = "+ FileContextTestHelper.getTestRootPath(fc, "test"));
//System.out.println("TargetOfTests = "+ targetOfTests.toUri());
super.setUp();
}
@After
public void tearDown() throws Exception {
super.tearDown();
fclocal.delete(targetOfTests, true);
}
}

41
src/test/core/org/apache/hadoop/fs/viewfs/TestFcPermissionsLocalFs.java Normal file
View File

@ -0,0 +1,41 @@
/**
* 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 org.apache.hadoop.fs.FileContextPermissionBase;
import org.junit.After;
import org.junit.Before;
public class TestFcPermissionsLocalFs extends FileContextPermissionBase {
@Before
public void setUp() throws Exception {
fc = ViewFsTestSetup.setupForViewFsLocalFs();
super.setUp();
}
@After
public void tearDown() throws Exception {
super.tearDown();
ViewFsTestSetup.tearDownForViewFsLocalFs();
}
}

55
src/test/core/org/apache/hadoop/fs/viewfs/TestViewFileSystemLocalFileSystem.java Normal file
View File

@ -0,0 +1,55 @@
/**
* 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 org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.FileSystemTestHelper;
import org.junit.After;
import org.junit.Before;
/**
*
* Test the ViewFileSystemBaseTest using a viewfs with authority:
* viewfs://mountTableName/
* ie the authority is used to load a mount table.
* The authority name used is "default"
*
*/
public class TestViewFileSystemLocalFileSystem extends ViewFileSystemBaseTest {
@Before
public void setUp() throws Exception {
// create the test root on local_fs
fsTarget = FileSystem.getLocal(new Configuration());
super.setUp();
}
@After
public void tearDown() throws Exception {
fsTarget.delete(FileSystemTestHelper.getTestRootPath(fsTarget), true);
super.tearDown();
}
}

78
src/test/core/org/apache/hadoop/fs/viewfs/TestViewFileSystemWithAuthorityLocalFileSystem.java Normal file
View File

@ -0,0 +1,78 @@
/**
* 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 java.net.URI;
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.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
/**
*
* Test the ViewFsBaseTest using a viewfs with authority:
* viewfs://mountTableName/
* ie the authority is used to load a mount table.
* The authority name used is "default"
*
*/
public class TestViewFileSystemWithAuthorityLocalFileSystem extends ViewFileSystemBaseTest {
URI schemeWithAuthority;
@Before
public void setUp() throws Exception {
// create the test root on local_fs
fsTarget = FileSystem.getLocal(new Configuration());
super.setUp(); // this sets up conf (and fcView which we replace)
// Now create a viewfs using a mount table called "default"
// hence viewfs://default/
schemeWithAuthority =
new URI(FsConstants.VIEWFS_SCHEME, "default", "/", null, null);
fsView = FileSystem.get(schemeWithAuthority, conf);
}
@After
public void tearDown() throws Exception {
fsTarget.delete(FileSystemTestHelper.getTestRootPath(fsTarget), true);
super.tearDown();
}
@Test
public void testBasicPaths() {
Assert.assertEquals(schemeWithAuthority,
fsView.getUri());
Assert.assertEquals(fsView.makeQualified(
new Path("/user/" + System.getProperty("user.name"))),
fsView.getWorkingDirectory());
Assert.assertEquals(fsView.makeQualified(
new Path("/user/" + System.getProperty("user.name"))),
fsView.getHomeDirectory());
Assert.assertEquals(
new Path("/foo/bar").makeQualified(schemeWithAuthority, null),
fsView.makeQualified(new Path("/foo/bar")));
}
}

74
src/test/core/org/apache/hadoop/fs/viewfs/TestViewFsConfig.java Normal file
View File

@ -0,0 +1,74 @@
/**
* 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 java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.FileAlreadyExistsException;
import org.apache.hadoop.fs.UnsupportedFileSystemException;
import org.apache.hadoop.fs.viewfs.ConfigUtil;
import org.apache.hadoop.fs.viewfs.InodeTree;
import org.junit.Test;
public class TestViewFsConfig {
@Test(expected=FileAlreadyExistsException.class)
public void testInvalidConfig() throws IOException, URISyntaxException {
Configuration conf = new Configuration();
ConfigUtil.addLink(conf, "/internalDir/linkToDir2",
new Path("file:///dir2").toUri());
ConfigUtil.addLink(conf, "/internalDir/linkToDir2/linkToDir3",
new Path("file:///dir3").toUri());
class Foo { };
new InodeTree<Foo>(conf, null) {
@Override
protected
Foo getTargetFileSystem(final URI uri)
throws URISyntaxException, UnsupportedFileSystemException {
return null;
}
@Override
protected
Foo getTargetFileSystem(
org.apache.hadoop.fs.viewfs.InodeTree.INodeDir<Foo>
dir)
throws URISyntaxException {
return null;
}
@Override
protected
Foo getTargetFileSystem(URI[] mergeFsURIList)
throws URISyntaxException, UnsupportedFileSystemException {
return null;
}
};
}
}

41
src/test/core/org/apache/hadoop/fs/viewfs/TestViewFsLocalFs.java Normal file
View File

@ -0,0 +1,41 @@
/**
* 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 org.apache.hadoop.fs.FileContext;
import org.junit.After;
import org.junit.Before;
public class TestViewFsLocalFs extends ViewFsBaseTest {
@Before
public void setUp() throws Exception {
// create the test root on local_fs
fcTarget = FileContext.getLocalFSFileContext();
super.setUp();
}
@After
public void tearDown() throws Exception {
super.tearDown();
}
}

76
src/test/core/org/apache/hadoop/fs/viewfs/TestViewFsWithAuthorityLocalFs.java Normal file
View File

@ -0,0 +1,76 @@
/**
* 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 java.net.URI;
import org.apache.hadoop.fs.FileContext;
import org.apache.hadoop.fs.FsConstants;
import org.apache.hadoop.fs.Path;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
/**
*
* Test the ViewFsBaseTest using a viewfs with authority:
* viewfs://mountTableName/
* ie the authority is used to load a mount table.
* The authority name used is "default"
*
*/
public class TestViewFsWithAuthorityLocalFs extends ViewFsBaseTest {
URI schemeWithAuthority;
@Before
public void setUp() throws Exception {
// create the test root on local_fs
fcTarget = FileContext.getLocalFSFileContext();
super.setUp(); // this sets up conf (and fcView which we replace)
// Now create a viewfs using a mount table called "default"
// hence viewfs://default/
schemeWithAuthority =
new URI(FsConstants.VIEWFS_SCHEME, "default", "/", null, null);
fcView = FileContext.getFileContext(schemeWithAuthority, conf);
}
@After
public void tearDown() throws Exception {
super.tearDown();
}
@Test
public void testBasicPaths() {
Assert.assertEquals(schemeWithAuthority,
fcView.getDefaultFileSystem().getUri());
Assert.assertEquals(fcView.makeQualified(
new Path("/user/" + System.getProperty("user.name"))),
fcView.getWorkingDirectory());
Assert.assertEquals(fcView.makeQualified(
new Path("/user/" + System.getProperty("user.name"))),
fcView.getHomeDirectory());
Assert.assertEquals(
new Path("/foo/bar").makeQualified(schemeWithAuthority, null),
fcView.makeQualified(new Path("/foo/bar")));
}
}

89
src/test/core/org/apache/hadoop/fs/viewfs/TestViewfsFileStatus.java Normal file
View File

@ -0,0 +1,89 @@
/**
* 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 java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.URISyntaxException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.FileUtil;
import org.apache.hadoop.fs.FsConstants;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.DataInputBuffer;
import org.apache.hadoop.io.DataOutputBuffer;
import org.junit.AfterClass;
import org.junit.Test;
import static org.junit.Assert.*;
/**
* The FileStatus is being serialized in MR as jobs are submitted.
* Since viewfs has overlayed ViewFsFileStatus, we ran into
* serialization problems. THis test is test the fix.
*/
public class TestViewfsFileStatus {
private static final File TEST_DIR =
new File(System.getProperty("test.build.data", "/tmp"),
TestViewfsFileStatus.class.getSimpleName());
@Test
public void testFileStatusSerialziation()
throws IOException, URISyntaxException {
String testfilename = "testFileStatusSerialziation";
TEST_DIR.mkdirs();
File infile = new File(TEST_DIR, testfilename);
final byte[] content = "dingos".getBytes();
FileOutputStream fos = null;
try {
fos = new FileOutputStream(infile);
fos.write(content);
} finally {
if (fos != null) {
fos.close();
}
}
assertEquals((long)content.length, infile.length());
Configuration conf = new Configuration();
ConfigUtil.addLink(conf, "/foo/bar/baz", TEST_DIR.toURI());
FileSystem vfs = FileSystem.get(FsConstants.VIEWFS_URI, conf);
assertEquals(ViewFileSystem.class, vfs.getClass());
FileStatus stat = vfs.getFileStatus(new Path("/foo/bar/baz", testfilename));
assertEquals(content.length, stat.getLen());
// check serialization/deserialization
DataOutputBuffer dob = new DataOutputBuffer();
stat.write(dob);
DataInputBuffer dib = new DataInputBuffer();
dib.reset(dob.getData(), 0, dob.getLength());
FileStatus deSer = new FileStatus();
deSer.readFields(dib);
assertEquals(content.length, deSer.getLen());
}
@AfterClass
public static void cleanup() throws IOException {
FileUtil.fullyDelete(TEST_DIR);
}
}

608
src/test/core/org/apache/hadoop/fs/viewfs/ViewFileSystemBaseTest.java Normal file
View File

@ -0,0 +1,608 @@
/**
* 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 java.io.FileNotFoundException;
import java.io.IOException;
import java.util.List;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.BlockLocation;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.FileSystemTestHelper;
import static org.apache.hadoop.fs.FileSystemTestHelper.*;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FsConstants;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.viewfs.ConfigUtil;
import org.apache.hadoop.fs.viewfs.ViewFileSystem;
import org.apache.hadoop.fs.viewfs.ViewFileSystem.MountPoint;
import org.apache.hadoop.security.AccessControlException;
import org.apache.hadoop.security.token.Token;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
/**
* <p>
* A collection of tests for the {@link ViewFileSystem}.
* This test should be used for testing ViewFileSystem that has mount links to
* a target file system such localFs or Hdfs etc.
* </p>
* <p>
* To test a given target file system create a subclass of this
* test and override {@link #setUp()} to initialize the <code>fsTarget</code>
* to point to the file system to which you want the mount targets
*
* Since this a junit 4 you can also do a single setup before
* the start of any tests.
* E.g.
* @BeforeClass public static void clusterSetupAtBegining()
* @AfterClass public static void ClusterShutdownAtEnd()
* </p>
*/
public class ViewFileSystemBaseTest {
FileSystem fsView; // the view file system - the mounts are here
FileSystem fsTarget; // the target file system - the mount will point here
Path targetTestRoot;
Configuration conf;
@Before
public void setUp() throws Exception {
targetTestRoot = FileSystemTestHelper.getAbsoluteTestRootPath(fsTarget);
// In case previous test was killed before cleanup
fsTarget.delete(targetTestRoot, true);
fsTarget.mkdirs(targetTestRoot);
// Make user and data dirs - we creates links to them in the mount table
fsTarget.mkdirs(new Path(targetTestRoot,"user"));
fsTarget.mkdirs(new Path(targetTestRoot,"data"));
fsTarget.mkdirs(new Path(targetTestRoot,"dir2"));
fsTarget.mkdirs(new Path(targetTestRoot,"dir3"));
FileSystemTestHelper.createFile(fsTarget, new Path(targetTestRoot,"aFile"));
// Now we use the mount fs to set links to user and dir
// in the test root
// Set up the defaultMT in the config with our mount point links
//Configuration conf = new Configuration();
conf = ViewFileSystemTestSetup.configWithViewfsScheme();
ConfigUtil.addLink(conf, "/user", new Path(targetTestRoot,"user").toUri());
ConfigUtil.addLink(conf, "/user2", new Path(targetTestRoot,"user").toUri());
ConfigUtil.addLink(conf, "/data", new Path(targetTestRoot,"data").toUri());
ConfigUtil.addLink(conf, "/internalDir/linkToDir2",
new Path(targetTestRoot,"dir2").toUri());
ConfigUtil.addLink(conf, "/internalDir/internalDir2/linkToDir3",
new Path(targetTestRoot,"dir3").toUri());
ConfigUtil.addLink(conf, "/danglingLink",
new Path(targetTestRoot,"missingTarget").toUri());
ConfigUtil.addLink(conf, "/linkToAFile",
new Path(targetTestRoot,"aFile").toUri());
fsView = FileSystem.get(FsConstants.VIEWFS_URI, conf);
}
@After
public void tearDown() throws Exception {
fsTarget.delete(FileSystemTestHelper.getTestRootPath(fsTarget), true);
}
@Test
public void testGetMountPoints() {
ViewFileSystem viewfs = (ViewFileSystem) fsView;
MountPoint[] mountPoints = viewfs.getMountPoints();
Assert.assertEquals(7, mountPoints.length);
}
/**
* This default implementation is when viewfs has mount points
* into file systems, such as LocalFs that do no have delegation tokens.
* It should be overridden for when mount points into hdfs.
*/
@Test
public void testGetDelegationTokens() throws IOException {
List<Token<?>> delTokens =
fsView.getDelegationTokens("sanjay");
Assert.assertEquals(0, delTokens.size());
}
@Test
public void testBasicPaths() {
Assert.assertEquals(FsConstants.VIEWFS_URI,
fsView.getUri());
Assert.assertEquals(fsView.makeQualified(
new Path("/user/" + System.getProperty("user.name"))),
fsView.getWorkingDirectory());
Assert.assertEquals(fsView.makeQualified(
new Path("/user/" + System.getProperty("user.name"))),
fsView.getHomeDirectory());
Assert.assertEquals(
new Path("/foo/bar").makeQualified(FsConstants.VIEWFS_URI, null),
fsView.makeQualified(new Path("/foo/bar")));
}
/**
* Test modify operations (create, mkdir, delete, etc)
* on the mount file system where the pathname references through
* the mount points. Hence these operation will modify the target
* file system.
*
* Verify the operation via mountfs (ie fSys) and *also* via the
* target file system (ie fSysLocal) that the mount link points-to.
*/
@Test
public void testOperationsThroughMountLinks() throws IOException {
// Create file
FileSystemTestHelper.createFile(fsView, "/user/foo");
Assert.assertTrue("Created file should be type file",
fsView.isFile(new Path("/user/foo")));
Assert.assertTrue("Target of created file should be type file",
fsTarget.isFile(new Path(targetTestRoot,"user/foo")));
// Delete the created file
Assert.assertTrue("Delete should suceed",
fsView.delete(new Path("/user/foo"), false));
Assert.assertFalse("File should not exist after delete",
fsView.exists(new Path("/user/foo")));
Assert.assertFalse("Target File should not exist after delete",
fsTarget.exists(new Path(targetTestRoot,"user/foo")));
// Create file with a 2 component dirs
FileSystemTestHelper.createFile(fsView, "/internalDir/linkToDir2/foo");
Assert.assertTrue("Created file should be type file",
fsView.isFile(new Path("/internalDir/linkToDir2/foo")));
Assert.assertTrue("Target of created file should be type file",
fsTarget.isFile(new Path(targetTestRoot,"dir2/foo")));
// Delete the created file
Assert.assertTrue("Delete should suceed",
fsView.delete(new Path("/internalDir/linkToDir2/foo"), false));
Assert.assertFalse("File should not exist after delete",
fsView.exists(new Path("/internalDir/linkToDir2/foo")));
Assert.assertFalse("Target File should not exist after delete",
fsTarget.exists(new Path(targetTestRoot,"dir2/foo")));
// Create file with a 3 component dirs
FileSystemTestHelper.createFile(fsView, "/internalDir/internalDir2/linkToDir3/foo");
Assert.assertTrue("Created file should be type file",
fsView.isFile(new Path("/internalDir/internalDir2/linkToDir3/foo")));
Assert.assertTrue("Target of created file should be type file",
fsTarget.isFile(new Path(targetTestRoot,"dir3/foo")));
// Recursive Create file with missing dirs
FileSystemTestHelper.createFile(fsView,
"/internalDir/linkToDir2/missingDir/miss2/foo");
Assert.assertTrue("Created file should be type file",
fsView.isFile(new Path("/internalDir/linkToDir2/missingDir/miss2/foo")));
Assert.assertTrue("Target of created file should be type file",
fsTarget.isFile(new Path(targetTestRoot,"dir2/missingDir/miss2/foo")));
// Delete the created file
Assert.assertTrue("Delete should succeed",
fsView.delete(
new Path("/internalDir/internalDir2/linkToDir3/foo"), false));
Assert.assertFalse("File should not exist after delete",
fsView.exists(new Path("/internalDir/internalDir2/linkToDir3/foo")));
Assert.assertFalse("Target File should not exist after delete",
fsTarget.exists(new Path(targetTestRoot,"dir3/foo")));
// mkdir
fsView.mkdirs(FileSystemTestHelper.getTestRootPath(fsView, "/user/dirX"));
Assert.assertTrue("New dir should be type dir",
fsView.isDirectory(new Path("/user/dirX")));
Assert.assertTrue("Target of new dir should be of type dir",
fsTarget.isDirectory(new Path(targetTestRoot,"user/dirX")));
fsView.mkdirs(
FileSystemTestHelper.getTestRootPath(fsView, "/user/dirX/dirY"));
Assert.assertTrue("New dir should be type dir",
fsView.isDirectory(new Path("/user/dirX/dirY")));
Assert.assertTrue("Target of new dir should be of type dir",
fsTarget.isDirectory(new Path(targetTestRoot,"user/dirX/dirY")));
// Delete the created dir
Assert.assertTrue("Delete should succeed",
fsView.delete(new Path("/user/dirX/dirY"), false));
Assert.assertFalse("File should not exist after delete",
fsView.exists(new Path("/user/dirX/dirY")));
Assert.assertFalse("Target File should not exist after delete",
fsTarget.exists(new Path(targetTestRoot,"user/dirX/dirY")));
Assert.assertTrue("Delete should succeed",
fsView.delete(new Path("/user/dirX"), false));
Assert.assertFalse("File should not exist after delete",
fsView.exists(new Path("/user/dirX")));
Assert.assertFalse(fsTarget.exists(new Path(targetTestRoot,"user/dirX")));
// Rename a file
FileSystemTestHelper.createFile(fsView, "/user/foo");
fsView.rename(new Path("/user/foo"), new Path("/user/fooBar"));
Assert.assertFalse("Renamed src should not exist",
fsView.exists(new Path("/user/foo")));
Assert.assertFalse("Renamed src should not exist in target",
fsTarget.exists(new Path(targetTestRoot,"user/foo")));
Assert.assertTrue("Renamed dest should exist as file",
fsView.isFile(FileSystemTestHelper.getTestRootPath(fsView,"/user/fooBar")));
Assert.assertTrue("Renamed dest should exist as file in target",
fsTarget.isFile(new Path(targetTestRoot,"user/fooBar")));
fsView.mkdirs(new Path("/user/dirFoo"));
fsView.rename(new Path("/user/dirFoo"), new Path("/user/dirFooBar"));
Assert.assertFalse("Renamed src should not exist",
fsView.exists(new Path("/user/dirFoo")));
Assert.assertFalse("Renamed src should not exist in target",
fsTarget.exists(new Path(targetTestRoot,"user/dirFoo")));
Assert.assertTrue("Renamed dest should exist as dir",
fsView.isDirectory(FileSystemTestHelper.getTestRootPath(fsView,"/user/dirFooBar")));
Assert.assertTrue("Renamed dest should exist as dir in target",
fsTarget.isDirectory(new Path(targetTestRoot,"user/dirFooBar")));
}
// rename across mount points that point to same target also fail
@Test(expected=IOException.class)
public void testRenameAcrossMounts1() throws IOException {
FileSystemTestHelper.createFile(fsView, "/user/foo");
fsView.rename(new Path("/user/foo"), new Path("/user2/fooBarBar"));
/* - code if we had wanted this to suceed
Assert.assertFalse(fSys.exists(new Path("/user/foo")));
Assert.assertFalse(fSysLocal.exists(new Path(targetTestRoot,"user/foo")));
Assert.assertTrue(fSys.isFile(FileSystemTestHelper.getTestRootPath(fSys,"/user2/fooBarBar")));
Assert.assertTrue(fSysLocal.isFile(new Path(targetTestRoot,"user/fooBarBar")));
*/
}
// rename across mount points fail if the mount link targets are different
// even if the targets are part of the same target FS
@Test(expected=IOException.class)
public void testRenameAcrossMounts2() throws IOException {
FileSystemTestHelper.createFile(fsView, "/user/foo");
fsView.rename(new Path("/user/foo"), new Path("/data/fooBar"));
}
static protected boolean SupportsBlocks = false; // local fs use 1 block
// override for HDFS
@Test
public void testGetBlockLocations() throws IOException {
Path targetFilePath = new Path(targetTestRoot,"data/largeFile");
FileSystemTestHelper.createFile(fsTarget,
targetFilePath, 10, 1024);
Path viewFilePath = new Path("/data/largeFile");
Assert.assertTrue("Created File should be type File",
fsView.isFile(viewFilePath));
BlockLocation[] viewBL = fsView.getFileBlockLocations(fsView.getFileStatus(viewFilePath), 0, 10240+100);
Assert.assertEquals(SupportsBlocks ? 10 : 1, viewBL.length);
BlockLocation[] targetBL = fsTarget.getFileBlockLocations(fsTarget.getFileStatus(targetFilePath), 0, 10240+100);
compareBLs(viewBL, targetBL);
// Same test but now get it via the FileStatus Parameter
fsView.getFileBlockLocations(
fsView.getFileStatus(viewFilePath), 0, 10240+100);
targetBL = fsTarget.getFileBlockLocations(
fsTarget.getFileStatus(targetFilePath), 0, 10240+100);
compareBLs(viewBL, targetBL);
}
void compareBLs(BlockLocation[] viewBL, BlockLocation[] targetBL) {
Assert.assertEquals(targetBL.length, viewBL.length);
int i = 0;
for (BlockLocation vbl : viewBL) {
Assert.assertEquals(vbl.toString(), targetBL[i].toString());
Assert.assertEquals(targetBL[i].getOffset(), vbl.getOffset());
Assert.assertEquals(targetBL[i].getLength(), vbl.getLength());
i++;
}
}
/**
* Test "readOps" (e.g. list, listStatus)
* on internal dirs of mount table
* These operations should succeed.
*/
// test list on internal dirs of mount table
@Test
public void testListOnInternalDirsOfMountTable() throws IOException {
// list on Slash
FileStatus[] dirPaths = fsView.listStatus(new Path("/"));
FileStatus fs;
Assert.assertEquals(6, dirPaths.length);
fs = FileSystemTestHelper.containsPath(fsView, "/user", dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue("A mount should appear as symlink", fs.isSymlink());
fs = FileSystemTestHelper.containsPath(fsView, "/data", dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue("A mount should appear as symlink", fs.isSymlink());
fs = FileSystemTestHelper.containsPath(fsView, "/internalDir", dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue("A mount should appear as symlink", fs.isDirectory());
fs = FileSystemTestHelper.containsPath(fsView, "/danglingLink", dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue("A mount should appear as symlink", fs.isSymlink());
fs = FileSystemTestHelper.containsPath(fsView, "/linkToAFile", dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue("A mount should appear as symlink", fs.isSymlink());
// list on internal dir
dirPaths = fsView.listStatus(new Path("/internalDir"));
Assert.assertEquals(2, dirPaths.length);
fs = FileSystemTestHelper.containsPath(fsView, "/internalDir/internalDir2", dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue("A mount should appear as symlink", fs.isDirectory());
fs = FileSystemTestHelper.containsPath(fsView, "/internalDir/linkToDir2",
dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue("A mount should appear as symlink", fs.isSymlink());
}
@Test
public void testListOnMountTargetDirs() throws IOException {
FileStatus[] dirPaths = fsView.listStatus(new Path("/data"));
FileStatus fs;
Assert.assertEquals(0, dirPaths.length);
// add a file
long len = FileSystemTestHelper.createFile(fsView, "/data/foo");
dirPaths = fsView.listStatus(new Path("/data"));
Assert.assertEquals(1, dirPaths.length);
fs = FileSystemTestHelper.containsPath(fsView, "/data/foo", dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue("Created file shoudl appear as a file", fs.isFile());
Assert.assertEquals(len, fs.getLen());
// add a dir
fsView.mkdirs(FileSystemTestHelper.getTestRootPath(fsView, "/data/dirX"));
dirPaths = fsView.listStatus(new Path("/data"));
Assert.assertEquals(2, dirPaths.length);
fs = FileSystemTestHelper.containsPath(fsView, "/data/foo", dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue("Created file shoudl appear as a file", fs.isFile());
fs = FileSystemTestHelper.containsPath(fsView, "/data/dirX", dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue("Created dir should appear as a dir", fs.isDirectory());
}
@Test
public void testFileStatusOnMountLink() throws IOException {
Assert.assertTrue(fsView.getFileStatus(new Path("/")).isDirectory());
checkFileStatus(fsView, "/", fileType.isDir);
checkFileStatus(fsView, "/user", fileType.isDir); // link followed => dir
checkFileStatus(fsView, "/data", fileType.isDir);
checkFileStatus(fsView, "/internalDir", fileType.isDir);
checkFileStatus(fsView, "/internalDir/linkToDir2", fileType.isDir);
checkFileStatus(fsView, "/internalDir/internalDir2/linkToDir3",
fileType.isDir);
checkFileStatus(fsView, "/linkToAFile", fileType.isFile);
}
@Test(expected=FileNotFoundException.class)
public void testgetFSonDanglingLink() throws IOException {
fsView.getFileStatus(new Path("/danglingLink"));
}
@Test(expected=FileNotFoundException.class)
public void testgetFSonNonExistingInternalDir() throws IOException {
fsView.getFileStatus(new Path("/internalDir/nonExisting"));
}
/*
* Test resolvePath(p)
*/
@Test
public void testResolvePathInternalPaths() throws IOException {
Assert.assertEquals(new Path("/"), fsView.resolvePath(new Path("/")));
Assert.assertEquals(new Path("/internalDir"),
fsView.resolvePath(new Path("/internalDir")));
}
@Test
public void testResolvePathMountPoints() throws IOException {
Assert.assertEquals(new Path(targetTestRoot,"user"),
fsView.resolvePath(new Path("/user")));
Assert.assertEquals(new Path(targetTestRoot,"data"),
fsView.resolvePath(new Path("/data")));
Assert.assertEquals(new Path(targetTestRoot,"dir2"),
fsView.resolvePath(new Path("/internalDir/linkToDir2")));
Assert.assertEquals(new Path(targetTestRoot,"dir3"),
fsView.resolvePath(new Path("/internalDir/internalDir2/linkToDir3")));
}
@Test
public void testResolvePathThroughMountPoints() throws IOException {
FileSystemTestHelper.createFile(fsView, "/user/foo");
Assert.assertEquals(new Path(targetTestRoot,"user/foo"),
fsView.resolvePath(new Path("/user/foo")));
fsView.mkdirs(
FileSystemTestHelper.getTestRootPath(fsView, "/user/dirX"));
Assert.assertEquals(new Path(targetTestRoot,"user/dirX"),
fsView.resolvePath(new Path("/user/dirX")));
fsView.mkdirs(
FileSystemTestHelper.getTestRootPath(fsView, "/user/dirX/dirY"));
Assert.assertEquals(new Path(targetTestRoot,"user/dirX/dirY"),
fsView.resolvePath(new Path("/user/dirX/dirY")));
}
@Test(expected=FileNotFoundException.class)
public void testResolvePathDanglingLink() throws IOException {
fsView.resolvePath(new Path("/danglingLink"));
}
@Test(expected=FileNotFoundException.class)
public void testResolvePathMissingThroughMountPoints() throws IOException {
fsView.resolvePath(new Path("/user/nonExisting"));
}
@Test(expected=FileNotFoundException.class)
public void testResolvePathMissingThroughMountPoints2() throws IOException {
fsView.mkdirs(
FileSystemTestHelper.getTestRootPath(fsView, "/user/dirX"));
fsView.resolvePath(new Path("/user/dirX/nonExisting"));
}
/**
* Test modify operations (create, mkdir, rename, etc)
* on internal dirs of mount table
* These operations should fail since the mount table is read-only or
* because the internal dir that it is trying to create already
* exits.
*/
// Mkdir on existing internal mount table succeed except for /
@Test(expected=AccessControlException.class)
public void testInternalMkdirSlash() throws IOException {
fsView.mkdirs(FileSystemTestHelper.getTestRootPath(fsView, "/"));
}
public void testInternalMkdirExisting1() throws IOException {
Assert.assertTrue("mkdir of existing dir should succeed",
fsView.mkdirs(FileSystemTestHelper.getTestRootPath(fsView,
"/internalDir")));
}
public void testInternalMkdirExisting2() throws IOException {
Assert.assertTrue("mkdir of existing dir should succeed",
fsView.mkdirs(FileSystemTestHelper.getTestRootPath(fsView,
"/internalDir/linkToDir2")));
}
// Mkdir for new internal mount table should fail
@Test(expected=AccessControlException.class)
public void testInternalMkdirNew() throws IOException {
fsView.mkdirs(FileSystemTestHelper.getTestRootPath(fsView, "/dirNew"));
}
@Test(expected=AccessControlException.class)
public void testInternalMkdirNew2() throws IOException {
fsView.mkdirs(FileSystemTestHelper.getTestRootPath(fsView, "/internalDir/dirNew"));
}
// Create File on internal mount table should fail
@Test(expected=AccessControlException.class)
public void testInternalCreate1() throws IOException {
FileSystemTestHelper.createFile(fsView, "/foo"); // 1 component
}
@Test(expected=AccessControlException.class)
public void testInternalCreate2() throws IOException { // 2 component
FileSystemTestHelper.createFile(fsView, "/internalDir/foo");
}
@Test(expected=AccessControlException.class)
public void testInternalCreateMissingDir() throws IOException {
FileSystemTestHelper.createFile(fsView, "/missingDir/foo");
}
@Test(expected=AccessControlException.class)
public void testInternalCreateMissingDir2() throws IOException {
FileSystemTestHelper.createFile(fsView, "/missingDir/miss2/foo");
}
@Test(expected=AccessControlException.class)
public void testInternalCreateMissingDir3() throws IOException {
FileSystemTestHelper.createFile(fsView, "/internalDir/miss2/foo");
}
// Delete on internal mount table should fail
@Test(expected=FileNotFoundException.class)
public void testInternalDeleteNonExisting() throws IOException {
fsView.delete(new Path("/NonExisting"), false);
}
@Test(expected=FileNotFoundException.class)
public void testInternalDeleteNonExisting2() throws IOException {
fsView.delete(new Path("/internalDir/NonExisting"), false);
}
@Test(expected=AccessControlException.class)
public void testInternalDeleteExisting() throws IOException {
fsView.delete(new Path("/internalDir"), false);
}
@Test(expected=AccessControlException.class)
public void testInternalDeleteExisting2() throws IOException {
fsView.getFileStatus(
new Path("/internalDir/linkToDir2")).isDirectory();
fsView.delete(new Path("/internalDir/linkToDir2"), false);
}
@Test
public void testMkdirOfMountLink() throws IOException {
// data exists - mkdirs returns true even though no permission in internal
// mount table
Assert.assertTrue("mkdir of existing mount link should succeed",
fsView.mkdirs(new Path("/data")));
}
// Rename on internal mount table should fail
@Test(expected=AccessControlException.class)
public void testInternalRename1() throws IOException {
fsView.rename(new Path("/internalDir"), new Path("/newDir"));
}
@Test(expected=AccessControlException.class)
public void testInternalRename2() throws IOException {
fsView.getFileStatus(new Path("/internalDir/linkToDir2")).isDirectory();
fsView.rename(new Path("/internalDir/linkToDir2"),
new Path("/internalDir/dir1"));
}
@Test(expected=AccessControlException.class)
public void testInternalRename3() throws IOException {
fsView.rename(new Path("/user"), new Path("/internalDir/linkToDir2"));
}
@Test(expected=AccessControlException.class)
public void testInternalRenameToSlash() throws IOException {
fsView.rename(new Path("/internalDir/linkToDir2/foo"), new Path("/"));
}
@Test(expected=AccessControlException.class)
public void testInternalRenameFromSlash() throws IOException {
fsView.rename(new Path("/"), new Path("/bar"));
}
@Test(expected=AccessControlException.class)
public void testInternalSetOwner() throws IOException {
fsView.setOwner(new Path("/internalDir"), "foo", "bar");
}
}

95
src/test/core/org/apache/hadoop/fs/viewfs/ViewFileSystemTestSetup.java Normal file
View File

@ -0,0 +1,95 @@
/**
* 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 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.viewfs.ConfigUtil;
/**
* This class is for setup and teardown for viewFileSystem so that
* it can be tested via the standard FileSystem tests.
*
* If tests launched via ant (build.xml) the test root is absolute path
* If tests launched via eclipse, the test root is
* is a test dir below the working directory. (see FileSystemTestHelper).
* Since viewFs has no built-in wd, its wd is /user/<username>.
*
* We set a viewFileSystems with mount point for
* /<firstComponent>" pointing to the target fs's testdir
*/
public class ViewFileSystemTestSetup {
/**
*
* @param fsTarget - the target fs of the view fs.
* @return return the ViewFS File context to be used for tests
* @throws Exception
*/
static public FileSystem setupForViewFs(FileSystem fsTarget) throws Exception {
/**
* create the test root on local_fs - the mount table will point here
*/
Configuration conf = configWithViewfsScheme();
Path targetOfTests = FileSystemTestHelper.getTestRootPath(fsTarget);
// In case previous test was killed before cleanup
fsTarget.delete(targetOfTests, true);
fsTarget.mkdirs(targetOfTests);
String srcTestFirstDir;
if (FileSystemTestHelper.TEST_ROOT_DIR.startsWith("/")) {
int indexOf2ndSlash = FileSystemTestHelper.TEST_ROOT_DIR.indexOf('/', 1);
srcTestFirstDir = FileSystemTestHelper.TEST_ROOT_DIR.substring(0, indexOf2ndSlash);
} else {
srcTestFirstDir = "/user";
}
//System.out.println("srcTestFirstDir=" + srcTestFirstDir);
// Set up the defaultMT in the config with mount point links
// The test dir is root is below /user/<userid>
ConfigUtil.addLink(conf, srcTestFirstDir,
targetOfTests.toUri());
FileSystem fsView = FileSystem.get(FsConstants.VIEWFS_URI, conf);
//System.out.println("SRCOfTests = "+ getTestRootPath(fs, "test"));
//System.out.println("TargetOfTests = "+ targetOfTests.toUri());
return fsView;
}
/**
*
* delete the test directory in the target fs
*/
static public void tearDownForViewFs(FileSystem fsTarget) throws Exception {
Path targetOfTests = FileSystemTestHelper.getTestRootPath(fsTarget);
fsTarget.delete(targetOfTests, true);
}
public static Configuration configWithViewfsScheme() {
Configuration conf = new Configuration();
conf.set("fs.viewfs.impl", ViewFileSystem.class.getName());
return conf;
}
}

646
src/test/core/org/apache/hadoop/fs/viewfs/ViewFsBaseTest.java Normal file
View File

@ -0,0 +1,646 @@
/**
* 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 static org.apache.hadoop.fs.FileContextTestHelper.checkFileLinkStatus;
import static org.apache.hadoop.fs.FileContextTestHelper.checkFileStatus;
import static org.apache.hadoop.fs.FileContextTestHelper.exists;
import static org.apache.hadoop.fs.FileContextTestHelper.isDir;
import static org.apache.hadoop.fs.FileContextTestHelper.isFile;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URI;
import java.util.List;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.BlockLocation;
import org.apache.hadoop.fs.FileContext;
import org.apache.hadoop.fs.FileContextTestHelper;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FsConstants;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.FileContextTestHelper.fileType;
import org.apache.hadoop.fs.viewfs.ViewFs.MountPoint;
import org.apache.hadoop.security.AccessControlException;
import org.apache.hadoop.security.token.Token;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
/**
* <p>
* A collection of tests for the {@link ViewFs}.
* This test should be used for testing ViewFs that has mount links to
* a target file system such localFs or Hdfs etc.
* </p>
* <p>
* To test a given target file system create a subclass of this
* test and override {@link #setUp()} to initialize the <code>fcTarget</code>
* to point to the file system to which you want the mount targets
*
* Since this a junit 4 you can also do a single setup before
* the start of any tests.
* E.g.
* @BeforeClass public static void clusterSetupAtBegining()
* @AfterClass public static void ClusterShutdownAtEnd()
* </p>
*/
public class ViewFsBaseTest {
FileContext fcView; // the view file system - the mounts are here
FileContext fcTarget; // the target file system - the mount will point here
Path targetTestRoot;
Configuration conf;
FileContext xfcViewWithAuthority; // same as fsView but with authority
URI schemeWithAuthority;
@Before
public void setUp() throws Exception {
targetTestRoot = FileContextTestHelper.getAbsoluteTestRootPath(fcTarget);
// In case previous test was killed before cleanup
fcTarget.delete(targetTestRoot, true);
fcTarget.mkdir(targetTestRoot, FileContext.DEFAULT_PERM, true);
// Make user and data dirs - we creates links to them in the mount table
fcTarget.mkdir(new Path(targetTestRoot,"user"),
FileContext.DEFAULT_PERM, true);
fcTarget.mkdir(new Path(targetTestRoot,"data"),
FileContext.DEFAULT_PERM, true);
fcTarget.mkdir(new Path(targetTestRoot,"dir2"),
FileContext.DEFAULT_PERM, true);
fcTarget.mkdir(new Path(targetTestRoot,"dir3"),
FileContext.DEFAULT_PERM, true);
FileContextTestHelper.createFile(fcTarget, new Path(targetTestRoot,"aFile"));
// Now we use the mount fs to set links to user and dir
// in the test root
// Set up the defaultMT in the config with our mount point links
conf = new Configuration();
ConfigUtil.addLink(conf, "/user",
new Path(targetTestRoot,"user").toUri());
ConfigUtil.addLink(conf, "/user2",
new Path(targetTestRoot,"user").toUri());
ConfigUtil.addLink(conf, "/data",
new Path(targetTestRoot,"data").toUri());
ConfigUtil.addLink(conf, "/internalDir/linkToDir2",
new Path(targetTestRoot,"dir2").toUri());
ConfigUtil.addLink(conf, "/internalDir/internalDir2/linkToDir3",
new Path(targetTestRoot,"dir3").toUri());
ConfigUtil.addLink(conf, "/danglingLink",
new Path(targetTestRoot,"missingTarget").toUri());
ConfigUtil.addLink(conf, "/linkToAFile",
new Path(targetTestRoot,"aFile").toUri());
fcView = FileContext.getFileContext(FsConstants.VIEWFS_URI, conf);
// Also try viewfs://default/ - note authority is name of mount table
}
@After
public void tearDown() throws Exception {
fcTarget.delete(FileContextTestHelper.getTestRootPath(fcTarget), true);
}
@Test
public void testGetMountPoints() {
ViewFs viewfs = (ViewFs) fcView.getDefaultFileSystem();
MountPoint[] mountPoints = viewfs.getMountPoints();
Assert.assertEquals(7, mountPoints.length);
}
/**
* This default implementation is when viewfs has mount points
* into file systems, such as LocalFs that do no have delegation tokens.
* It should be overridden for when mount points into hdfs.
*/
@Test
public void testGetDelegationTokens() throws IOException {
List<Token<?>> delTokens =
fcView.getDelegationTokens(new Path("/"), "sanjay");
Assert.assertEquals(0, delTokens.size());
}
@Test
public void testBasicPaths() {
Assert.assertEquals(FsConstants.VIEWFS_URI,
fcView.getDefaultFileSystem().getUri());
Assert.assertEquals(fcView.makeQualified(
new Path("/user/" + System.getProperty("user.name"))),
fcView.getWorkingDirectory());
Assert.assertEquals(fcView.makeQualified(
new Path("/user/" + System.getProperty("user.name"))),
fcView.getHomeDirectory());
Assert.assertEquals(
new Path("/foo/bar").makeQualified(FsConstants.VIEWFS_URI, null),
fcView.makeQualified(new Path("/foo/bar")));
}
/**
* Test modify operations (create, mkdir, delete, etc)
* on the mount file system where the pathname references through
* the mount points. Hence these operation will modify the target
* file system.
*
* Verify the operation via mountfs (ie fc) and *also* via the
* target file system (ie fclocal) that the mount link points-to.
*/
@Test
public void testOperationsThroughMountLinks() throws IOException {
// Create file
FileContextTestHelper.createFileNonRecursive(fcView, "/user/foo");
Assert.assertTrue("Create file should be file",
isFile(fcView, new Path("/user/foo")));
Assert.assertTrue("Target of created file should be type file",
isFile(fcTarget, new Path(targetTestRoot,"user/foo")));
// Delete the created file
Assert.assertTrue("Delete should succeed",
fcView.delete(new Path("/user/foo"), false));
Assert.assertFalse("File should not exist after delete",
exists(fcView, new Path("/user/foo")));
Assert.assertFalse("Target File should not exist after delete",
exists(fcTarget, new Path(targetTestRoot,"user/foo")));
// Create file with a 2 component dirs
FileContextTestHelper.createFileNonRecursive(fcView,
"/internalDir/linkToDir2/foo");
Assert.assertTrue("Created file should be type file",
isFile(fcView, new Path("/internalDir/linkToDir2/foo")));
Assert.assertTrue("Target of created file should be type file",
isFile(fcTarget, new Path(targetTestRoot,"dir2/foo")));
// Delete the created file
Assert.assertTrue("Delete should suceed",
fcView.delete(new Path("/internalDir/linkToDir2/foo"),false));
Assert.assertFalse("File should not exist after deletion",
exists(fcView, new Path("/internalDir/linkToDir2/foo")));
Assert.assertFalse("Target should not exist after deletion",
exists(fcTarget, new Path(targetTestRoot,"dir2/foo")));
// Create file with a 3 component dirs
FileContextTestHelper.createFileNonRecursive(fcView,
"/internalDir/internalDir2/linkToDir3/foo");
Assert.assertTrue("Created file should be of type file",
isFile(fcView, new Path("/internalDir/internalDir2/linkToDir3/foo")));
Assert.assertTrue("Target of created file should also be type file",
isFile(fcTarget, new Path(targetTestRoot,"dir3/foo")));
// Recursive Create file with missing dirs
FileContextTestHelper.createFile(fcView,
"/internalDir/linkToDir2/missingDir/miss2/foo");
Assert.assertTrue("Created file should be of type file",
isFile(fcView, new Path("/internalDir/linkToDir2/missingDir/miss2/foo")));
Assert.assertTrue("Target of created file should also be type file",
isFile(fcTarget, new Path(targetTestRoot,"dir2/missingDir/miss2/foo")));
// Delete the created file
Assert.assertTrue("Delete should succeed", fcView.delete(
new Path("/internalDir/internalDir2/linkToDir3/foo"), false));
Assert.assertFalse("Deleted File should not exist",
exists(fcView, new Path("/internalDir/internalDir2/linkToDir3/foo")));
Assert.assertFalse("Target of deleted file should not exist",
exists(fcTarget, new Path(targetTestRoot,"dir3/foo")));
// mkdir
fcView.mkdir(FileContextTestHelper.getTestRootPath(fcView, "/user/dirX"),
FileContext.DEFAULT_PERM, false);
Assert.assertTrue("New dir should be type dir",
isDir(fcView, new Path("/user/dirX")));
Assert.assertTrue("Target of new dir should be of type dir",
isDir(fcTarget, new Path(targetTestRoot,"user/dirX")));
fcView.mkdir(FileContextTestHelper.getTestRootPath(fcView, "/user/dirX/dirY"),
FileContext.DEFAULT_PERM, false);
Assert.assertTrue("New dir should be type dir",
isDir(fcView, new Path("/user/dirX/dirY")));
Assert.assertTrue("Target of new dir should be of type dir",
isDir(fcTarget,new Path(targetTestRoot,"user/dirX/dirY")));
// Delete the created dir
Assert.assertTrue("Delete should succeed",
fcView.delete(new Path("/user/dirX/dirY"), false));
Assert.assertFalse("Deleted File should not exist",
exists(fcView, new Path("/user/dirX/dirY")));
Assert.assertFalse("Deleted Target should not exist",
exists(fcTarget, new Path(targetTestRoot,"user/dirX/dirY")));
Assert.assertTrue("Delete should succeed",
fcView.delete(new Path("/user/dirX"), false));
Assert.assertFalse("Deleted File should not exist",
exists(fcView, new Path("/user/dirX")));
Assert.assertFalse("Deleted Target should not exist",
exists(fcTarget, new Path(targetTestRoot,"user/dirX")));
// Rename a file
FileContextTestHelper.createFile(fcView, "/user/foo");
fcView.rename(new Path("/user/foo"), new Path("/user/fooBar"));
Assert.assertFalse("Renamed src should not exist",
exists(fcView, new Path("/user/foo")));
Assert.assertFalse(exists(fcTarget, new Path(targetTestRoot,"user/foo")));
Assert.assertTrue(isFile(fcView,
FileContextTestHelper.getTestRootPath(fcView,"/user/fooBar")));
Assert.assertTrue(isFile(fcTarget, new Path(targetTestRoot,"user/fooBar")));
fcView.mkdir(new Path("/user/dirFoo"), FileContext.DEFAULT_PERM, false);
fcView.rename(new Path("/user/dirFoo"), new Path("/user/dirFooBar"));
Assert.assertFalse("Renamed src should not exist",
exists(fcView, new Path("/user/dirFoo")));
Assert.assertFalse("Renamed src should not exist in target",
exists(fcTarget, new Path(targetTestRoot,"user/dirFoo")));
Assert.assertTrue("Renamed dest should exist as dir",
isDir(fcView,
FileContextTestHelper.getTestRootPath(fcView,"/user/dirFooBar")));
Assert.assertTrue("Renamed dest should exist as dir in target",
isDir(fcTarget,new Path(targetTestRoot,"user/dirFooBar")));
}
// rename across mount points that point to same target also fail
@Test(expected=IOException.class)
public void testRenameAcrossMounts1() throws IOException {
FileContextTestHelper.createFile(fcView, "/user/foo");
fcView.rename(new Path("/user/foo"), new Path("/user2/fooBarBar"));
/* - code if we had wanted this to succeed
Assert.assertFalse(exists(fc, new Path("/user/foo")));
Assert.assertFalse(exists(fclocal, new Path(targetTestRoot,"user/foo")));
Assert.assertTrue(isFile(fc,
FileContextTestHelper.getTestRootPath(fc,"/user2/fooBarBar")));
Assert.assertTrue(isFile(fclocal,
new Path(targetTestRoot,"user/fooBarBar")));
*/
}
// rename across mount points fail if the mount link targets are different
// even if the targets are part of the same target FS
@Test(expected=IOException.class)
public void testRenameAcrossMounts2() throws IOException {
FileContextTestHelper.createFile(fcView, "/user/foo");
fcView.rename(new Path("/user/foo"), new Path("/data/fooBar"));
}
static protected boolean SupportsBlocks = false; // local fs use 1 block
// override for HDFS
@Test
public void testGetBlockLocations() throws IOException {
Path targetFilePath = new Path(targetTestRoot,"data/largeFile");
FileContextTestHelper.createFile(fcTarget, targetFilePath, 10, 1024);
Path viewFilePath = new Path("/data/largeFile");
checkFileStatus(fcView, viewFilePath.toString(), fileType.isFile);
BlockLocation[] viewBL = fcView.getFileBlockLocations(viewFilePath,
0, 10240+100);
Assert.assertEquals(SupportsBlocks ? 10 : 1, viewBL.length);
BlockLocation[] targetBL = fcTarget.getFileBlockLocations(targetFilePath, 0, 10240+100);
compareBLs(viewBL, targetBL);
// Same test but now get it via the FileStatus Parameter
fcView.getFileBlockLocations(viewFilePath, 0, 10240+100);
targetBL = fcTarget.getFileBlockLocations(targetFilePath, 0, 10240+100);
compareBLs(viewBL, targetBL);
}
void compareBLs(BlockLocation[] viewBL, BlockLocation[] targetBL) {
Assert.assertEquals(targetBL.length, viewBL.length);
int i = 0;
for (BlockLocation vbl : viewBL) {
Assert.assertEquals(vbl.toString(), targetBL[i].toString());
Assert.assertEquals(targetBL[i].getOffset(), vbl.getOffset());
Assert.assertEquals(targetBL[i].getLength(), vbl.getLength());
i++;
}
}
/**
* Test "readOps" (e.g. list, listStatus)
* on internal dirs of mount table
* These operations should succeed.
*/
// test list on internal dirs of mount table
@Test
public void testListOnInternalDirsOfMountTable() throws IOException {
// list on Slash
FileStatus[] dirPaths = fcView.util().listStatus(new Path("/"));
FileStatus fs;
Assert.assertEquals(6, dirPaths.length);
fs = FileContextTestHelper.containsPath(fcView, "/user", dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue("A mount should appear as symlink", fs.isSymlink());
fs = FileContextTestHelper.containsPath(fcView, "/data", dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue("A mount should appear as symlink", fs.isSymlink());
fs = FileContextTestHelper.containsPath(fcView, "/internalDir", dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue("InternalDirs should appear as dir", fs.isDirectory());
fs = FileContextTestHelper.containsPath(fcView, "/danglingLink", dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue("A mount should appear as symlink", fs.isSymlink());
fs = FileContextTestHelper.containsPath(fcView, "/linkToAFile", dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue("A mount should appear as symlink", fs.isSymlink());
// list on internal dir
dirPaths = fcView.util().listStatus(new Path("/internalDir"));
Assert.assertEquals(2, dirPaths.length);
fs = FileContextTestHelper.containsPath(fcView,
"/internalDir/internalDir2", dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue("InternalDirs should appear as dir",fs.isDirectory());
fs = FileContextTestHelper.containsPath(fcView,
"/internalDir/linkToDir2", dirPaths);
Assert.assertNotNull(fs);
Assert.assertTrue("A mount should appear as symlink", fs.isSymlink());
}
@Test
public void testFileStatusOnMountLink() throws IOException {
Assert.assertTrue("Slash should appear as dir",
fcView.getFileStatus(new Path("/")).isDirectory());
checkFileStatus(fcView, "/", fileType.isDir);
checkFileStatus(fcView, "/user", fileType.isDir);
checkFileStatus(fcView, "/data", fileType.isDir);
checkFileStatus(fcView, "/internalDir", fileType.isDir);
checkFileStatus(fcView, "/internalDir/linkToDir2", fileType.isDir);
checkFileStatus(fcView, "/internalDir/internalDir2/linkToDir3", fileType.isDir);
checkFileStatus(fcView, "/linkToAFile", fileType.isFile);
try {
fcView.getFileStatus(new Path("/danglingLink"));
Assert.fail("Excepted a not found exception here");
} catch ( FileNotFoundException e) {
// as excepted
}
}
@Test(expected=FileNotFoundException.class)
public void testgetFSonDanglingLink() throws IOException {
fcView.getFileStatus(new Path("/danglingLink"));
}
@Test(expected=FileNotFoundException.class)
public void testgetFSonNonExistingInternalDir() throws IOException {
fcView.getFileStatus(new Path("/internalDir/nonExisting"));
}
@Test
public void testgetFileLinkStatus() throws IOException {
checkFileLinkStatus(fcView, "/user", fileType.isSymlink);
checkFileLinkStatus(fcView, "/data", fileType.isSymlink);
checkFileLinkStatus(fcView, "/internalDir/linkToDir2", fileType.isSymlink);
checkFileLinkStatus(fcView, "/internalDir/internalDir2/linkToDir3",
fileType.isSymlink);
checkFileLinkStatus(fcView, "/linkToAFile", fileType.isSymlink);
checkFileLinkStatus(fcView, "/internalDir", fileType.isDir);
checkFileLinkStatus(fcView, "/internalDir/internalDir2", fileType.isDir);
}
@Test(expected=FileNotFoundException.class)
public void testgetFileLinkStatusonNonExistingInternalDir()
throws IOException {
fcView.getFileLinkStatus(new Path("/internalDir/nonExisting"));
}
@Test
public void testSymlinkTarget() throws IOException {
// get link target`
Assert.assertEquals(fcView.getLinkTarget(new Path("/user")),
(new Path(targetTestRoot,"user")));
Assert.assertEquals(fcView.getLinkTarget(new Path("/data")),
(new Path(targetTestRoot,"data")));
Assert.assertEquals(
fcView.getLinkTarget(new Path("/internalDir/linkToDir2")),
(new Path(targetTestRoot,"dir2")));
Assert.assertEquals(
fcView.getLinkTarget(new Path("/internalDir/internalDir2/linkToDir3")),
(new Path(targetTestRoot,"dir3")));
Assert.assertEquals(fcView.getLinkTarget(new Path("/linkToAFile")),
(new Path(targetTestRoot,"aFile")));
}
@Test(expected=IOException.class)
public void testgetLinkTargetOnNonLink() throws IOException {
fcView.getLinkTarget(new Path("/internalDir/internalDir2"));
}
/*
* Test resolvePath(p)
* TODO In the tests below replace
* fcView.getDefaultFileSystem().resolvePath() fcView.resolvePath()
*/
@Test
public void testResolvePathInternalPaths() throws IOException {
Assert.assertEquals(new Path("/"), fcView.getDefaultFileSystem().resolvePath(new Path("/")));
Assert.assertEquals(new Path("/internalDir"),
fcView.getDefaultFileSystem().resolvePath(new Path("/internalDir")));
}
@Test
public void testResolvePathMountPoints() throws IOException {
Assert.assertEquals(new Path(targetTestRoot,"user"),
fcView.getDefaultFileSystem().resolvePath(new Path("/user")));
Assert.assertEquals(new Path(targetTestRoot,"data"),
fcView.getDefaultFileSystem().resolvePath(new Path("/data")));
Assert.assertEquals(new Path(targetTestRoot,"dir2"),
fcView.getDefaultFileSystem().resolvePath(new Path("/internalDir/linkToDir2")));
Assert.assertEquals(new Path(targetTestRoot,"dir3"),
fcView.getDefaultFileSystem().resolvePath(new Path("/internalDir/internalDir2/linkToDir3")));
}
@Test
public void testResolvePathThroughMountPoints() throws IOException {
FileContextTestHelper.createFile(fcView, "/user/foo");
Assert.assertEquals(new Path(targetTestRoot,"user/foo"),
fcView.getDefaultFileSystem().resolvePath(new Path("/user/foo")));
fcView.mkdir(
FileContextTestHelper.getTestRootPath(fcView, "/user/dirX"),
FileContext.DEFAULT_PERM, false);
Assert.assertEquals(new Path(targetTestRoot,"user/dirX"),
fcView.getDefaultFileSystem().resolvePath(new Path("/user/dirX")));
fcView.mkdir(
FileContextTestHelper.getTestRootPath(fcView, "/user/dirX/dirY"),
FileContext.DEFAULT_PERM, false);
Assert.assertEquals(new Path(targetTestRoot,"user/dirX/dirY"),
fcView.getDefaultFileSystem().resolvePath(new Path("/user/dirX/dirY")));
}
@Test(expected=FileNotFoundException.class)
public void testResolvePathDanglingLink() throws IOException {
fcView.getDefaultFileSystem().resolvePath(new Path("/danglingLink"));
}
@Test(expected=FileNotFoundException.class)
public void testResolvePathMissingThroughMountPoints() throws IOException {
fcView.getDefaultFileSystem().resolvePath(new Path("/user/nonExisting"));
}
@Test(expected=FileNotFoundException.class)
public void testResolvePathMissingThroughMountPoints2() throws IOException {
fcView.mkdir(
FileContextTestHelper.getTestRootPath(fcView, "/user/dirX"),
FileContext.DEFAULT_PERM, false);
fcView.getDefaultFileSystem().resolvePath(new Path("/user/dirX/nonExisting"));
}
/**
* Test modify operations (create, mkdir, rename, etc)
* on internal dirs of mount table
* These operations should fail since the mount table is read-only or
* because the internal dir that it is trying to create already
* exits.
*/
// Mkdir on internal mount table should fail
@Test(expected=AccessControlException.class)
public void testInternalMkdirSlash() throws IOException {
fcView.mkdir(FileContextTestHelper.getTestRootPath(fcView, "/"),
FileContext.DEFAULT_PERM, false);
}
@Test(expected=AccessControlException.class)
public void testInternalMkdirExisting1() throws IOException {
fcView.mkdir(FileContextTestHelper.getTestRootPath(fcView, "/internalDir"),
FileContext.DEFAULT_PERM, false);
}
@Test(expected=AccessControlException.class)
public void testInternalMkdirExisting2() throws IOException {
fcView.mkdir(FileContextTestHelper.getTestRootPath(fcView,
"/internalDir/linkToDir2"),
FileContext.DEFAULT_PERM, false);
}
@Test(expected=AccessControlException.class)
public void testInternalMkdirNew() throws IOException {
fcView.mkdir(FileContextTestHelper.getTestRootPath(fcView, "/dirNew"),
FileContext.DEFAULT_PERM, false);
}
@Test(expected=AccessControlException.class)
public void testInternalMkdirNew2() throws IOException {
fcView.mkdir(FileContextTestHelper.getTestRootPath(fcView, "/internalDir/dirNew"),
FileContext.DEFAULT_PERM, false);
}
// Create on internal mount table should fail
@Test(expected=AccessControlException.class)
public void testInternalCreate1() throws IOException {
FileContextTestHelper.createFileNonRecursive(fcView, "/foo"); // 1 component
}
@Test(expected=AccessControlException.class)
public void testInternalCreate2() throws IOException { // 2 component
FileContextTestHelper.createFileNonRecursive(fcView, "/internalDir/foo");
}
@Test(expected=AccessControlException.class)
public void testInternalCreateMissingDir() throws IOException {
FileContextTestHelper.createFile(fcView, "/missingDir/foo");
}
@Test(expected=AccessControlException.class)
public void testInternalCreateMissingDir2() throws IOException {
FileContextTestHelper.createFile(fcView, "/missingDir/miss2/foo");
}
@Test(expected=AccessControlException.class)
public void testInternalCreateMissingDir3() throws IOException {
FileContextTestHelper.createFile(fcView, "/internalDir/miss2/foo");
}
// Delete on internal mount table should fail
@Test(expected=FileNotFoundException.class)
public void testInternalDeleteNonExisting() throws IOException {
fcView.delete(new Path("/NonExisting"), false);
}
@Test(expected=FileNotFoundException.class)
public void testInternalDeleteNonExisting2() throws IOException {
fcView.delete(new Path("/internalDir/NonExisting"), false);
}
@Test(expected=AccessControlException.class)
public void testInternalDeleteExisting() throws IOException {
fcView.delete(new Path("/internalDir"), false);
}
@Test(expected=AccessControlException.class)
public void testInternalDeleteExisting2() throws IOException {
Assert.assertTrue("Delete of link to dir should succeed",
fcView.getFileStatus(new Path("/internalDir/linkToDir2")).isDirectory());
fcView.delete(new Path("/internalDir/linkToDir2"), false);
}
// Rename on internal mount table should fail
@Test(expected=AccessControlException.class)
public void testInternalRename1() throws IOException {
fcView.rename(new Path("/internalDir"), new Path("/newDir"));
}
@Test(expected=AccessControlException.class)
public void testInternalRename2() throws IOException {
Assert.assertTrue("linkTODir2 should be a dir",
fcView.getFileStatus(new Path("/internalDir/linkToDir2")).isDirectory());
fcView.rename(new Path("/internalDir/linkToDir2"),
new Path("/internalDir/dir1"));
}
@Test(expected=AccessControlException.class)
public void testInternalRename3() throws IOException {
fcView.rename(new Path("/user"), new Path("/internalDir/linkToDir2"));
}
@Test(expected=AccessControlException.class)
public void testInternalRenameToSlash() throws IOException {
fcView.rename(new Path("/internalDir/linkToDir2/foo"), new Path("/"));
}
@Test(expected=AccessControlException.class)
public void testInternalRenameFromSlash() throws IOException {
fcView.rename(new Path("/"), new Path("/bar"));
}
@Test(expected=AccessControlException.class)
public void testInternalSetOwner() throws IOException {
fcView.setOwner(new Path("/internalDir"), "foo", "bar");
}
}

89
src/test/core/org/apache/hadoop/fs/viewfs/ViewFsTestSetup.java Normal file
View File

@ -0,0 +1,89 @@
/**
* 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 org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileContext;
import org.apache.hadoop.fs.FileContextTestHelper;
import org.apache.hadoop.fs.FsConstants;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.viewfs.ConfigUtil;
/**
* This class is for setup and teardown for viewFs so that
* it can be tested via the standard FileContext tests.
*
* If tests launched via ant (build.xml) the test root is absolute path
* If tests launched via eclipse, the test root is
* is a test dir below the working directory. (see FileContextTestHelper).
* Since viewFs has no built-in wd, its wd is /user/<username>.
*
* We set up fc to be the viewFs with mount point for
* /<firstComponent>" pointing to the local file system's testdir
*/
public class ViewFsTestSetup {
/*
* return the ViewFS File context to be used for tests
*/
static public FileContext setupForViewFsLocalFs() throws Exception {
/**
* create the test root on local_fs - the mount table will point here
*/
FileContext fclocal = FileContext.getLocalFSFileContext();
Path targetOfTests = FileContextTestHelper.getTestRootPath(fclocal);
// In case previous test was killed before cleanup
fclocal.delete(targetOfTests, true);
fclocal.mkdir(targetOfTests, FileContext.DEFAULT_PERM, true);
String srcTestFirstDir;
if (FileContextTestHelper.TEST_ROOT_DIR.startsWith("/")) {
int indexOf2ndSlash = FileContextTestHelper.TEST_ROOT_DIR.indexOf('/', 1);
srcTestFirstDir = FileContextTestHelper.TEST_ROOT_DIR.substring(0, indexOf2ndSlash);
} else {
srcTestFirstDir = "/user";
}
//System.out.println("srcTestFirstDir=" + srcTestFirstDir);
// Set up the defaultMT in the config with mount point links
// The test dir is root is below /user/<userid>
Configuration conf = new Configuration();
ConfigUtil.addLink(conf, srcTestFirstDir,
targetOfTests.toUri());
FileContext fc = FileContext.getFileContext(FsConstants.VIEWFS_URI, conf);
//System.out.println("SRCOfTests = "+ getTestRootPath(fc, "test"));
//System.out.println("TargetOfTests = "+ targetOfTests.toUri());
return fc;
}
/**
*
* delete the test directory in the target local fs
*/
static public void tearDownForViewFsLocalFs() throws Exception {
FileContext fclocal = FileContext.getLocalFSFileContext();
Path targetOfTests = FileContextTestHelper.getTestRootPath(fclocal);
fclocal.delete(targetOfTests, true);
}
}