com.cloudera.hoop.fs.FSSetPermission.java Source code

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Here is the source code for com.cloudera.hoop.fs.FSSetPermission.java

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/*
 * Copyright (c) 2011, Cloudera, Inc. All Rights Reserved.
 *
 * Cloudera, Inc. 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
 *
 * This software 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 com.cloudera.hoop.fs;

import com.cloudera.lib.service.Hadoop;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsPermission;

import java.io.IOException;

/**
 * Executor that performs a set-permission Hadoop files system operation.
 */
public class FSSetPermission implements Hadoop.FileSystemExecutor<Void> {

    private Path path;
    private String permission;

    /**
     * Creates a set-permission executor.
     *
     * @param path path to set the permission.
     * @param permission permission to set.
     */
    public FSSetPermission(String path, String permission) {
        this.path = new Path(path);
        this.permission = permission;
    }

    /**
     * Executes the filesystem operation.
     *
     * @param fs filesystem instance to use.
     * @return void.
     * @throws IOException thrown if an IO error occured.
     */
    @Override
    public Void execute(FileSystem fs) throws IOException {
        FsPermission fsPermission = FSUtils.getPermission(permission);
        fs.setPermission(path, fsPermission);
        return null;
    }

}