hadoop FilterFs 源码
haddop FilterFs 代码
文件路径:/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FilterFs.java
/**
* 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;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Collection;
import java.util.EnumSet;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.fs.FileSystem.Statistics;
import org.apache.hadoop.fs.impl.OpenFileParameters;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.fs.Options.ChecksumOpt;
import org.apache.hadoop.security.AccessControlException;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.util.Progressable;
/**
* A <code>FilterFs</code> contains some other file system, which it uses as its
* basic file system, possibly transforming the data along the way or providing
* additional functionality. The class <code>FilterFs</code> itself simply
* overrides all methods of <code>AbstractFileSystem</code> with versions that
* pass all requests to the contained file system. Subclasses of
* <code>FilterFs</code> may further override some of these methods and may also
* provide additional methods and fields.
*
*/
@InterfaceAudience.Private
@InterfaceStability.Evolving /*Evolving for a release,to be changed to Stable */
public abstract class FilterFs extends AbstractFileSystem {
private final AbstractFileSystem myFs;
protected AbstractFileSystem getMyFs() {
return myFs;
}
protected FilterFs(AbstractFileSystem fs) throws URISyntaxException {
super(fs.getUri(), fs.getUri().getScheme(), false, fs.getUriDefaultPort());
myFs = fs;
}
@Override
public Statistics getStatistics() {
return myFs.getStatistics();
}
@Override
public Path makeQualified(Path path) {
return myFs.makeQualified(path);
}
@Override
public Path getInitialWorkingDirectory() {
return myFs.getInitialWorkingDirectory();
}
@Override
public Path getHomeDirectory() {
return myFs.getHomeDirectory();
}
@Override
public FSDataOutputStream createInternal(Path f,
EnumSet<CreateFlag> flag, FsPermission absolutePermission, int bufferSize,
short replication, long blockSize, Progressable progress,
ChecksumOpt checksumOpt, boolean createParent)
throws IOException, UnresolvedLinkException {
checkPath(f);
return myFs.createInternal(f, flag, absolutePermission, bufferSize,
replication, blockSize, progress, checksumOpt, createParent);
}
@Override
public boolean delete(Path f, boolean recursive)
throws IOException, UnresolvedLinkException {
checkPath(f);
return myFs.delete(f, recursive);
}
@Override
public BlockLocation[] getFileBlockLocations(Path f, long start, long len)
throws IOException, UnresolvedLinkException {
checkPath(f);
return myFs.getFileBlockLocations(f, start, len);
}
@Override
public FileChecksum getFileChecksum(Path f)
throws IOException, UnresolvedLinkException {
checkPath(f);
return myFs.getFileChecksum(f);
}
@Override
public FileStatus getFileStatus(Path f)
throws IOException, UnresolvedLinkException {
checkPath(f);
return myFs.getFileStatus(f);
}
@Override
public void msync() throws IOException, UnsupportedOperationException {
myFs.msync();
}
@Override
public void access(Path path, FsAction mode) throws AccessControlException,
FileNotFoundException, UnresolvedLinkException, IOException {
checkPath(path);
myFs.access(path, mode);
}
@Override
public FileStatus getFileLinkStatus(final Path f)
throws IOException, UnresolvedLinkException {
checkPath(f);
return myFs.getFileLinkStatus(f);
}
@Override
public FsStatus getFsStatus(final Path f) throws AccessControlException,
FileNotFoundException, UnresolvedLinkException, IOException {
return myFs.getFsStatus(f);
}
@Override
public FsStatus getFsStatus() throws IOException {
return myFs.getFsStatus();
}
@Override
@Deprecated
public FsServerDefaults getServerDefaults() throws IOException {
return myFs.getServerDefaults();
}
@Override
public FsServerDefaults getServerDefaults(final Path f) throws IOException {
return myFs.getServerDefaults(f);
}
@Override
public Path resolvePath(final Path p) throws FileNotFoundException,
UnresolvedLinkException, AccessControlException, IOException {
return myFs.resolvePath(p);
}
@Override
public int getUriDefaultPort() {
return myFs.getUriDefaultPort();
}
@Override
public URI getUri() {
return myFs.getUri();
}
@Override
public void checkPath(Path path) {
myFs.checkPath(path);
}
@Override
public String getUriPath(final Path p) {
return myFs.getUriPath(p);
}
@Override
public FileStatus[] listStatus(Path f)
throws IOException, UnresolvedLinkException {
checkPath(f);
return myFs.listStatus(f);
}
@Override
public RemoteIterator<LocatedFileStatus> listLocatedStatus(final Path f)
throws AccessControlException, FileNotFoundException,
UnresolvedLinkException, IOException {
checkPath(f);
return myFs.listLocatedStatus(f);
}
@Override
public RemoteIterator<Path> listCorruptFileBlocks(Path path)
throws IOException {
return myFs.listCorruptFileBlocks(path);
}
@Override
public void mkdir(Path dir, FsPermission permission, boolean createParent)
throws IOException, UnresolvedLinkException {
checkPath(dir);
myFs.mkdir(dir, permission, createParent);
}
@Override
public FSDataInputStream open(final Path f) throws AccessControlException,
FileNotFoundException, UnresolvedLinkException, IOException {
checkPath(f);
return myFs.open(f);
}
@Override
public FSDataInputStream open(Path f, int bufferSize)
throws IOException, UnresolvedLinkException {
checkPath(f);
return myFs.open(f, bufferSize);
}
@Override
public boolean truncate(Path f, long newLength)
throws AccessControlException, FileNotFoundException,
UnresolvedLinkException, IOException {
checkPath(f);
return myFs.truncate(f, newLength);
}
@Override
public void renameInternal(Path src, Path dst)
throws IOException, UnresolvedLinkException {
checkPath(src);
checkPath(dst);
myFs.rename(src, dst, Options.Rename.NONE);
}
@Override
public void renameInternal(final Path src, final Path dst,
boolean overwrite) throws AccessControlException,
FileAlreadyExistsException, FileNotFoundException,
ParentNotDirectoryException, UnresolvedLinkException, IOException {
myFs.renameInternal(src, dst, overwrite);
}
@Override
public void setOwner(Path f, String username, String groupname)
throws IOException, UnresolvedLinkException {
checkPath(f);
myFs.setOwner(f, username, groupname);
}
@Override
public void setPermission(Path f, FsPermission permission)
throws IOException, UnresolvedLinkException {
checkPath(f);
myFs.setPermission(f, permission);
}
@Override
public boolean setReplication(Path f, short replication)
throws IOException, UnresolvedLinkException {
checkPath(f);
return myFs.setReplication(f, replication);
}
@Override
public void setTimes(Path f, long mtime, long atime)
throws IOException, UnresolvedLinkException {
checkPath(f);
myFs.setTimes(f, mtime, atime);
}
@Override
public void setVerifyChecksum(boolean verifyChecksum)
throws IOException, UnresolvedLinkException {
myFs.setVerifyChecksum(verifyChecksum);
}
@Override
public boolean supportsSymlinks() {
return myFs.supportsSymlinks();
}
@Override
public void createSymlink(Path target, Path link, boolean createParent)
throws IOException, UnresolvedLinkException {
myFs.createSymlink(target, link, createParent);
}
@Override
public Path getLinkTarget(final Path f) throws IOException {
return myFs.getLinkTarget(f);
}
@Override // AbstractFileSystem
public String getCanonicalServiceName() {
return myFs.getCanonicalServiceName();
}
@Override // AbstractFileSystem
public List<Token<?>> getDelegationTokens(String renewer) throws IOException {
return myFs.getDelegationTokens(renewer);
}
@Override
public boolean isValidName(String src) {
return myFs.isValidName(src);
}
@Override
public void modifyAclEntries(Path path, List<AclEntry> aclSpec)
throws IOException {
myFs.modifyAclEntries(path, aclSpec);
}
@Override
public void removeAclEntries(Path path, List<AclEntry> aclSpec)
throws IOException {
myFs.removeAclEntries(path, aclSpec);
}
@Override
public void removeDefaultAcl(Path path) throws IOException {
myFs.removeDefaultAcl(path);
}
@Override
public void removeAcl(Path path) throws IOException {
myFs.removeAcl(path);
}
@Override
public void setAcl(Path path, List<AclEntry> aclSpec) throws IOException {
myFs.setAcl(path, aclSpec);
}
@Override
public AclStatus getAclStatus(Path path) throws IOException {
return myFs.getAclStatus(path);
}
@Override
public void setXAttr(Path path, String name, byte[] value)
throws IOException {
myFs.setXAttr(path, name, value);
}
@Override
public void setXAttr(Path path, String name, byte[] value,
EnumSet<XAttrSetFlag> flag) throws IOException {
myFs.setXAttr(path, name, value, flag);
}
@Override
public byte[] getXAttr(Path path, String name) throws IOException {
return myFs.getXAttr(path, name);
}
@Override
public Map<String, byte[]> getXAttrs(Path path) throws IOException {
return myFs.getXAttrs(path);
}
@Override
public Map<String, byte[]> getXAttrs(Path path, List<String> names)
throws IOException {
return myFs.getXAttrs(path, names);
}
@Override
public List<String> listXAttrs(Path path) throws IOException {
return myFs.listXAttrs(path);
}
@Override
public void removeXAttr(Path path, String name) throws IOException {
myFs.removeXAttr(path, name);
}
@Override
public Path createSnapshot(final Path path, final String snapshotName)
throws IOException {
return myFs.createSnapshot(path, snapshotName);
}
@Override
public void renameSnapshot(final Path path, final String snapshotOldName,
final String snapshotNewName) throws IOException {
myFs.renameSnapshot(path, snapshotOldName, snapshotNewName);
}
@Override
public void deleteSnapshot(final Path path, final String snapshotName)
throws IOException {
myFs.deleteSnapshot(path, snapshotName);
}
@Override
public void satisfyStoragePolicy(final Path path) throws IOException {
myFs.satisfyStoragePolicy(path);
}
@Override
public void setStoragePolicy(Path path, String policyName)
throws IOException {
myFs.setStoragePolicy(path, policyName);
}
@Override
public void unsetStoragePolicy(final Path src)
throws IOException {
myFs.unsetStoragePolicy(src);
}
@Override
public BlockStoragePolicySpi getStoragePolicy(final Path src)
throws IOException {
return myFs.getStoragePolicy(src);
}
@Override
public Collection<? extends BlockStoragePolicySpi> getAllStoragePolicies()
throws IOException {
return myFs.getAllStoragePolicies();
}
@Override
public CompletableFuture<FSDataInputStream> openFileWithOptions(
final Path path,
final OpenFileParameters parameters) throws IOException {
return myFs.openFileWithOptions(path, parameters);
}
public boolean hasPathCapability(final Path path,
final String capability)
throws IOException {
return myFs.hasPathCapability(path, capability);
}
@Override
public MultipartUploaderBuilder createMultipartUploader(final Path basePath)
throws IOException {
return myFs.createMultipartUploader(basePath);
}
}
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