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HADOOP-10887. Add XAttrs to ViewFs and make XAttrs + ViewFileSystem internal dir behavior consistent. Contributed by Stephen Chu. 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1612951 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Andrew Wang 2014-07-23 21:42:01 +00:00
parent 28fca92521
commit 9bfae42538
8 changed files with 241 additions and 1 deletions
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3
hadoop-common-project/hadoop-common/CHANGES.txt
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@ -452,6 +452,9 @@ Release 2.6.0 - UNRELEASED
HADOOP-10855. Allow Text to be read with a known Length. (todd)
HADOOP-10887. Add XAttrs to ViewFs and make XAttrs + ViewFileSystem
internal dir behavior consistent. (Stephen Chu via wang)
OPTIMIZATIONS
BUG FIXES

29
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileContext.java
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@ -2484,4 +2484,33 @@ public final class FileContext {
}
}.resolve(this, absF);
}
/**
* Get all of the xattr names for a file or directory.
* Only those xattr names which the logged-in user has permissions to view
* are returned.
* <p/>
* A regular user can only get xattr names for the "user" namespace.
* The super user can only get xattr names for "user" and "trusted"
* namespaces.
* The xattrs of the "security" and "system" namespaces are only
* used/exposed internally by/to the FS impl.
* <p/>
* @see <a href="http://en.wikipedia.org/wiki/Extended_file_attributes">
* http://en.wikipedia.org/wiki/Extended_file_attributes</a>
*
* @param path Path to get extended attributes
* @return List<String> of the XAttr names of the file or directory
* @throws IOException
*/
public List<String> listXAttrs(Path path) throws IOException {
final Path absF = fixRelativePart(path);
return new FSLinkResolver<List<String>>() {
@Override
public List<String> next(final AbstractFileSystem fs, final Path p)
throws IOException {
return fs.listXAttrs(p);
}
}.resolve(this, absF);
}
}

2
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileSystem.java
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@ -2509,7 +2509,7 @@ public abstract class FileSystem extends Configured implements Closeable {
* http://en.wikipedia.org/wiki/Extended_file_attributes</a>
*
* @param path Path to get extended attributes
* @return Map<String, byte[]> describing the XAttrs of the file or directory
* @return List<String> of the XAttr names of the file or directory
* @throws IOException
*/
public List<String> listXAttrs(Path path) throws IOException {

34
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/viewfs/ChRootedFs.java
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@ -22,6 +22,7 @@ import java.net.URI;
import java.net.URISyntaxException;
import java.util.EnumSet;
import java.util.List;
import java.util.Map;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
@ -37,6 +38,7 @@ import org.apache.hadoop.fs.FsStatus;
import org.apache.hadoop.fs.Options.ChecksumOpt;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.UnresolvedLinkException;
import org.apache.hadoop.fs.XAttrSetFlag;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsPermission;
@ -313,6 +315,38 @@ class ChRootedFs extends AbstractFileSystem {
return myFs.getAclStatus(fullPath(path));
}
@Override
public void setXAttr(Path path, String name, byte[] value,
EnumSet<XAttrSetFlag> flag) throws IOException {
myFs.setXAttr(fullPath(path), name, value, flag);
}
@Override
public byte[] getXAttr(Path path, String name) throws IOException {
return myFs.getXAttr(fullPath(path), name);
}
@Override
public Map<String, byte[]> getXAttrs(Path path) throws IOException {
return myFs.getXAttrs(fullPath(path));
}
@Override
public Map<String, byte[]> getXAttrs(Path path, List<String> names)
throws IOException {
return myFs.getXAttrs(fullPath(path), names);
}
@Override
public List<String> listXAttrs(Path path) throws IOException {
return myFs.listXAttrs(fullPath(path));
}
@Override
public void removeXAttr(Path path, String name) throws IOException {
myFs.removeXAttr(fullPath(path), name);
}
@Override
public void setVerifyChecksum(final boolean verifyChecksum)
throws IOException, UnresolvedLinkException {

34
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/viewfs/ViewFileSystem.java
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@ -913,5 +913,39 @@ public class ViewFileSystem extends FileSystem {
.addEntries(AclUtil.getMinimalAcl(PERMISSION_555))
.stickyBit(false).build();
}
@Override
public void setXAttr(Path path, String name, byte[] value,
EnumSet<XAttrSetFlag> flag) throws IOException {
checkPathIsSlash(path);
throw readOnlyMountTable("setXAttr", path);
}
@Override
public byte[] getXAttr(Path path, String name) throws IOException {
throw new NotInMountpointException(path, "getXAttr");
}
@Override
public Map<String, byte[]> getXAttrs(Path path) throws IOException {
throw new NotInMountpointException(path, "getXAttrs");
}
@Override
public Map<String, byte[]> getXAttrs(Path path, List<String> names)
throws IOException {
throw new NotInMountpointException(path, "getXAttrs");
}
@Override
public List<String> listXAttrs(Path path) throws IOException {
throw new NotInMountpointException(path, "listXAttrs");
}
@Override
public void removeXAttr(Path path, String name) throws IOException {
checkPathIsSlash(path);
throw readOnlyMountTable("removeXAttr", path);
}
}
}

80
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/viewfs/ViewFs.java
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@ -26,6 +26,7 @@ import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.EnumSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import org.apache.hadoop.classification.InterfaceAudience;
@ -48,6 +49,7 @@ 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.XAttrSetFlag;
import org.apache.hadoop.fs.local.LocalConfigKeys;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclUtil;
@ -652,6 +654,50 @@ public class ViewFs extends AbstractFileSystem {
return res.targetFileSystem.getAclStatus(res.remainingPath);
}
@Override
public void setXAttr(Path path, String name, byte[] value,
EnumSet<XAttrSetFlag> flag) throws IOException {
InodeTree.ResolveResult<AbstractFileSystem> res =
fsState.resolve(getUriPath(path), true);
res.targetFileSystem.setXAttr(res.remainingPath, name, value, flag);
}
@Override
public byte[] getXAttr(Path path, String name) throws IOException {
InodeTree.ResolveResult<AbstractFileSystem> res =
fsState.resolve(getUriPath(path), true);
return res.targetFileSystem.getXAttr(res.remainingPath, name);
}
@Override
public Map<String, byte[]> getXAttrs(Path path) throws IOException {
InodeTree.ResolveResult<AbstractFileSystem> res =
fsState.resolve(getUriPath(path), true);
return res.targetFileSystem.getXAttrs(res.remainingPath);
}
@Override
public Map<String, byte[]> getXAttrs(Path path, List<String> names)
throws IOException {
InodeTree.ResolveResult<AbstractFileSystem> res =
fsState.resolve(getUriPath(path), true);
return res.targetFileSystem.getXAttrs(res.remainingPath, names);
}
@Override
public List<String> listXAttrs(Path path) throws IOException {
InodeTree.ResolveResult<AbstractFileSystem> res =
fsState.resolve(getUriPath(path), true);
return res.targetFileSystem.listXAttrs(res.remainingPath);
}
@Override
public void removeXAttr(Path path, String name) throws IOException {
InodeTree.ResolveResult<AbstractFileSystem> res =
fsState.resolve(getUriPath(path), true);
res.targetFileSystem.removeXAttr(res.remainingPath, name);
}
/*
* An instance of this class represents an internal dir of the viewFs
@ -921,5 +967,39 @@ public class ViewFs extends AbstractFileSystem {
.addEntries(AclUtil.getMinimalAcl(PERMISSION_555))
.stickyBit(false).build();
}
@Override
public void setXAttr(Path path, String name, byte[] value,
EnumSet<XAttrSetFlag> flag) throws IOException {
checkPathIsSlash(path);
throw readOnlyMountTable("setXAttr", path);
}
@Override
public byte[] getXAttr(Path path, String name) throws IOException {
throw new NotInMountpointException(path, "getXAttr");
}
@Override
public Map<String, byte[]> getXAttrs(Path path) throws IOException {
throw new NotInMountpointException(path, "getXAttrs");
}
@Override
public Map<String, byte[]> getXAttrs(Path path, List<String> names)
throws IOException {
throw new NotInMountpointException(path, "getXAttrs");
}
@Override
public List<String> listXAttrs(Path path) throws IOException {
throw new NotInMountpointException(path, "listXAttrs");
}
@Override
public void removeXAttr(Path path, String name) throws IOException {
checkPathIsSlash(path);
throw readOnlyMountTable("removeXAttr", path);
}
}
}

30
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/viewfs/ViewFileSystemBaseTest.java
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@ -773,4 +773,34 @@ public class ViewFileSystemBaseTest {
assertFalse(aclStatus.isStickyBit());
}
@Test(expected=AccessControlException.class)
public void testInternalSetXAttr() throws IOException {
fsView.setXAttr(new Path("/internalDir"), "xattrName", null);
}
@Test(expected=NotInMountpointException.class)
public void testInternalGetXAttr() throws IOException {
fsView.getXAttr(new Path("/internalDir"), "xattrName");
}
@Test(expected=NotInMountpointException.class)
public void testInternalGetXAttrs() throws IOException {
fsView.getXAttrs(new Path("/internalDir"));
}
@Test(expected=NotInMountpointException.class)
public void testInternalGetXAttrsWithNames() throws IOException {
fsView.getXAttrs(new Path("/internalDir"), new ArrayList<String>());
}
@Test(expected=NotInMountpointException.class)
public void testInternalListXAttr() throws IOException {
fsView.listXAttrs(new Path("/internalDir"));
}
@Test(expected=AccessControlException.class)
public void testInternalRemoveXAttr() throws IOException {
fsView.removeXAttr(new Path("/internalDir"), "xattrName");
}
}

30
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/viewfs/ViewFsBaseTest.java
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@ -747,4 +747,34 @@ public class ViewFsBaseTest {
AclUtil.getMinimalAcl(PERMISSION_555));
assertFalse(aclStatus.isStickyBit());
}
@Test(expected=AccessControlException.class)
public void testInternalSetXAttr() throws IOException {
fcView.setXAttr(new Path("/internalDir"), "xattrName", null);
}
@Test(expected=NotInMountpointException.class)
public void testInternalGetXAttr() throws IOException {
fcView.getXAttr(new Path("/internalDir"), "xattrName");
}
@Test(expected=NotInMountpointException.class)
public void testInternalGetXAttrs() throws IOException {
fcView.getXAttrs(new Path("/internalDir"));
}
@Test(expected=NotInMountpointException.class)
public void testInternalGetXAttrsWithNames() throws IOException {
fcView.getXAttrs(new Path("/internalDir"), new ArrayList<String>());
}
@Test(expected=NotInMountpointException.class)
public void testInternalListXAttr() throws IOException {
fcView.listXAttrs(new Path("/internalDir"));
}
@Test(expected=AccessControlException.class)
public void testInternalRemoveXAttr() throws IOException {
fcView.removeXAttr(new Path("/internalDir"), "xattrName");
}
}