org.pentaho.hadoop.shim.common.fs.FileSystemProxy.java Source code

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/*******************************************************************************
 *
 * Pentaho Big Data
 *
 * Copyright (C) 2002-2017 by Hitachi Vantara : http://www.pentaho.com
 *
 *******************************************************************************
 *
 * Licensed 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.pentaho.hadoop.shim.common.fs;

import java.io.IOException;
import java.net.URI;

import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.util.Progressable;
import org.pentaho.hadoop.shim.api.fs.FileSystem;
import org.pentaho.hadoop.shim.common.ShimUtils;

public class FileSystemProxy extends org.apache.hadoop.fs.FileSystem implements FileSystem {

    private org.apache.hadoop.fs.FileSystem delegate;

    public FileSystemProxy(org.apache.hadoop.fs.FileSystem delegateParam) {
        if (delegateParam == null) {
            throw new NullPointerException();
        }
        this.delegate = delegateParam;
    }

    @Override
    public Object getDelegate() {
        return delegate;
    }

    protected org.apache.hadoop.fs.FileSystem getDelegate(org.apache.hadoop.fs.Path hadoopPath) {
        return (org.apache.hadoop.fs.FileSystem) getDelegate();
    }

    protected org.apache.hadoop.fs.FileSystem getDelegate(org.pentaho.hadoop.shim.api.fs.Path pentahoPath) {
        return getDelegate(ShimUtils.asPath(pentahoPath));
    }

    @Override
    public org.pentaho.hadoop.shim.api.fs.Path asPath(String path) {
        return new PathProxy(path);
    }

    @Override
    public org.pentaho.hadoop.shim.api.fs.Path asPath(org.pentaho.hadoop.shim.api.fs.Path parent, String child) {
        return new PathProxy(parent, child);
    }

    @Override
    public org.pentaho.hadoop.shim.api.fs.Path asPath(String parent, String child) {
        return new PathProxy(parent, child);
    }

    @Override
    public boolean exists(org.pentaho.hadoop.shim.api.fs.Path path) throws IOException {
        return getDelegate(path).exists(ShimUtils.asPath(path));
    }

    @Override
    public boolean delete(org.pentaho.hadoop.shim.api.fs.Path path, boolean recursive) throws IOException {
        return delete(ShimUtils.asPath(path), recursive);
    }

    // DELEGATING METHODS  
    @Override
    public FSDataOutputStream append(Path f, int bufferSize, Progressable progress) throws IOException {
        return getDelegate(f).append(f, bufferSize, progress);
    }

    @Override
    public FSDataOutputStream create(Path f, FsPermission permission, boolean overwrite, int bufferSize,
            short replication, long blockSize, Progressable progress) throws IOException {
        return getDelegate(f).create(f, overwrite, bufferSize, replication, blockSize, progress);
    }

    @Override
    @Deprecated
    public boolean delete(Path f) throws IOException {
        return getDelegate(f).delete(f);
    }

    @Override
    public boolean delete(Path f, boolean recursive) throws IOException {
        return getDelegate(f).delete(f, recursive);
    }

    @Override
    public FileStatus getFileStatus(Path f) throws IOException {
        return getDelegate(f).getFileStatus(f);
    }

    @Override
    public URI getUri() {
        return delegate.getUri();
    }

    @Override
    public Path getWorkingDirectory() {
        return delegate.getWorkingDirectory();
    }

    @Override
    public FileStatus[] listStatus(Path f) throws IOException {
        return getDelegate(f).listStatus(f);
    }

    @Override
    public boolean mkdirs(Path f, FsPermission permission) throws IOException {
        return getDelegate(f).mkdirs(f, permission);
    }

    @Override
    public FSDataInputStream open(Path f, int bufferSize) throws IOException {
        return getDelegate(f).open(f, bufferSize);
    }

    @Override
    public boolean rename(Path src, Path dst) throws IOException {
        return getDelegate(src).rename(src, dst);
    }

    @Override
    public void setWorkingDirectory(Path f) {
        getDelegate(f).setWorkingDirectory(f);
    }
}