org.ala.util.CleanupRepository.java Source code

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Here is the source code for org.ala.util.CleanupRepository.java

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/***************************************************************************
 * Copyright (C) 2010 Atlas of Living Australia
 * All Rights Reserved.
 *
 * The contents of this file are subject to the Mozilla Public
 * License Version 1.1 (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 ***************************************************************************/
package org.ala.util;

import java.io.File;
import java.io.FileFilter;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Iterator;

import org.apache.commons.io.FileUtils;
import org.apache.commons.io.filefilter.DirectoryFileFilter;
import org.apache.commons.lang.time.DateUtils;

/**
 * A utility to cleanup the filesystem based on last modified date of 
 * files. We can then use the following unix command to remove empty directories.
 * 
 * find . -depth -empty -type d -exec rmdir {} \;
 *
 * @author Dave Martin (David.Martin@csiro.au)
 */
public class CleanupRepository {

    /**
     * @param args
     */
    public static void main(String[] args) throws Exception {

        String filePath = null;
        Date thresholdDate = null;
        try {
            filePath = args[0];
            thresholdDate = DateUtils.parseDate(args[1], new String[] { "yyyyMMdd" });
        } catch (Exception e) {
            System.out.println("Usage: <absolute-file-path> <delete-before date (yyyyMMdd)>");
            System.exit(0);
        }

        //iterate through directory

        File file = new File(filePath);
        File[] dirs = file.listFiles((FileFilter) DirectoryFileFilter.DIRECTORY);

        int deleting = 0;
        int keeping = 0;

        for (File currentDir : dirs) {
            System.out.println("Reading directory: " + currentDir.getAbsolutePath());
            Iterator<File> fileIterator = FileUtils.iterateFiles(currentDir, null, true);
            while (fileIterator.hasNext()) {
                File currentFile = fileIterator.next();
                Date lastModified = new Date(currentFile.lastModified());
                if (lastModified.before(thresholdDate)) {
                    SimpleDateFormat sf = new SimpleDateFormat("dd MMM yyyy");
                    System.out.println("Candidate for deletion: " + currentFile.getAbsolutePath()
                            + " last modified: " + sf.format(lastModified));
                    FileUtils.forceDelete(currentFile);
                    deleting++;
                } else {
                    keeping++;
                }
            }
        }

        System.out.println("Keeping :" + keeping + ", deleting :" + deleting);

        System.out.println("Use the following command to remove empty directories.");

        System.out.println("find . -depth -empty -type d -exec rmdir {} \\;");
    }
}