hdfs/src/main/java/org/apache/crail/hdfs/CrailHDFS.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.crail.hdfs;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.EnumSet;
import org.slf4j.Logger;
import org.apache.crail.utils.CrailUtils;
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.FsServerDefaults;
import org.apache.hadoop.fs.FsStatus;
import org.apache.hadoop.fs.Options.ChecksumOpt;
import org.apache.hadoop.fs.ParentNotDirectoryException;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.UnresolvedLinkException;
import org.apache.hadoop.fs.UnsupportedFileSystemException;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.security.AccessControlException;
import org.apache.hadoop.util.Progressable;

public class CrailHDFS extends AbstractFileSystem {
	private static final Logger LOG = CrailUtils.getLogger();
	private CrailHadoopFileSystem dfs;
	
	public CrailHDFS(final URI uri, final Configuration conf) throws IOException, URISyntaxException {
		super(uri, "crail", true, 9000);
		this.dfs = new CrailHadoopFileSystem();
		dfs.initialize(uri, conf);
	}

	@Override
	public int getUriDefaultPort() {
		return 9000;
	}

	@Override
	public FsServerDefaults getServerDefaults() throws IOException {
		return dfs.getServerDefaults(dfs.getWorkingDirectory());
	}

	@Override
	public FSDataOutputStream createInternal(Path path, EnumSet<CreateFlag> flag, FsPermission absolutePermission, int bufferSize, short replication, long blockSize, Progressable progress, ChecksumOpt checksumOpt, boolean createParent) throws AccessControlException, FileAlreadyExistsException, FileNotFoundException, ParentNotDirectoryException, UnsupportedFileSystemException, UnresolvedLinkException, IOException {
		return dfs.create(path, absolutePermission, false, bufferSize, replication, blockSize, progress);
	}

	@Override
	public void mkdir(Path path, FsPermission permission, boolean createParent) throws AccessControlException, FileAlreadyExistsException, FileNotFoundException, UnresolvedLinkException, IOException {
		dfs.mkdirs(path, permission);
	}

	@Override
	public boolean delete(Path path, boolean recursive) throws AccessControlException, FileNotFoundException, UnresolvedLinkException, IOException {
		return dfs.delete(path, recursive);
	}

	@Override
	public FSDataInputStream open(Path path, int bufferSize) throws AccessControlException, FileNotFoundException, UnresolvedLinkException, IOException {
		return dfs.open(path, bufferSize);
	}

	@Override
	public boolean setReplication(Path f, short replication) throws AccessControlException, FileNotFoundException, UnresolvedLinkException, IOException {
		return dfs.setReplication(f, replication);
	}

	@Override
	public void renameInternal(Path src, Path dst) throws AccessControlException, FileAlreadyExistsException, FileNotFoundException, ParentNotDirectoryException, UnresolvedLinkException, IOException {
		dfs.rename(src, dst);
	}

	@Override
	public void setPermission(Path f, FsPermission permission) throws AccessControlException, FileNotFoundException, UnresolvedLinkException, IOException {
		dfs.setPermission(f, permission);
	}

	@Override
	public void setOwner(Path f, String username, String groupname) throws AccessControlException, FileNotFoundException, UnresolvedLinkException, IOException {
	}

	@Override
	public void setTimes(Path f, long mtime, long atime) throws AccessControlException, FileNotFoundException, UnresolvedLinkException, IOException {
	}

	@Override
	public FileChecksum getFileChecksum(Path f) throws AccessControlException, FileNotFoundException, UnresolvedLinkException, IOException {
		return null;
	}

	@Override
	public FileStatus getFileStatus(Path path) throws AccessControlException, FileNotFoundException, UnresolvedLinkException, IOException {
		return dfs.getFileStatus(path);
	}

	@Override
	public BlockLocation[] getFileBlockLocations(Path path, long start, long len) throws AccessControlException, FileNotFoundException, UnresolvedLinkException, IOException {
		return dfs.getFileBlockLocations(path, start, len);
	}

	@Override
	public FsStatus getFsStatus() throws AccessControlException, FileNotFoundException, IOException {
		return dfs.getStatus();
	}

	@Override
	public FileStatus[] listStatus(Path path) throws AccessControlException, FileNotFoundException, UnresolvedLinkException, IOException {
		return dfs.listStatus(path);
	}

	@Override
	public void setVerifyChecksum(boolean verifyChecksum) throws AccessControlException, IOException {
		dfs.setVerifyChecksum(verifyChecksum);
	}
}