com.intel.hadoop.graphbuilder.util.FsUtil.java Source code

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Here is the source code for com.intel.hadoop.graphbuilder.util.FsUtil.java

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/* Copyright (C) 2012 Intel Corporation.
 *     All rights reserved.
 *           
 *  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.
 *
 * For more about this software visit:
 *      http://www.01.org/GraphBuilder 
 */
package com.intel.hadoop.graphbuilder.util;

import java.io.IOException;

import javassist.NotFoundException;

import org.apache.hadoop.filecache.DistributedCache;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.mapred.JobConf;

public class FsUtil {
    /**
     * Archives and distributes the temporary class files generated by {@code IngressJobKeyValueFactory},
     * {@code PreprocessJobKeyValueFactory}, and {@code EdgeTransformJobKeyValueFactory} using Javassist.
     * The temporary class files are located at $currentdir/generatedclass,
     * and the distributed archive is located at hdfs:///tmp/tempclass.jar.
     * @param conf
     */
    public static void distributedTempClassToClassPath(JobConf conf) {
        try {
            Process p = Runtime.getRuntime().exec("jar -cf tempclass.jar generatedclass");
            p.waitFor();
            FileSystem fs = FileSystem.get(conf);
            Path src = new Path(new java.io.File(".").getCanonicalPath() + "/tempclass.jar");
            Path dst = new Path("/tmp", "tempclass.jar");
            fs.copyFromLocalFile(src, dst);
            DistributedCache.addFileToClassPath(dst, conf, fs);
        } catch (IOException e) {
            e.printStackTrace();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    /*
    public static String getFilePathofClass (Class c) throws NotFoundException, IOException {
      String path = new java.io.File(".").getCanonicalPath();
      System.out.println(path);
      return path + "/" + "generatedclass/" + c.getName().replaceAll("\\.", "/") + ".class";
    }
    */
}