/*
* 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.hoop.HoopServer;
import com.cloudera.lib.service.Hadoop;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.json.simple.JSONObject;
import java.io.IOException;
/**
* Executor that performs a home-dir Hadoop files system operation.
*/
public class FSHomeDir implements Hadoop.FileSystemExecutor<JSONObject> {
/**
* Executes the filesystem operation.
*
* @param fs filesystem instance to use.
* @return a JSON object with the user home directory.
* @throws IOException thrown if an IO error occured.
*/
@Override
@SuppressWarnings("unchecked")
public JSONObject execute(FileSystem fs) throws IOException {
Path homeDir = fs.getHomeDirectory();
JSONObject json = new JSONObject();
homeDir = FSUtils.convertPathToHoop(homeDir, HoopServer.get().getBaseUrl());
json.put("homeDir", homeDir.toString());
return json;
}
}