Cleaning the /tmp directory

[Daniel Caldeweyher]

On Mon, 23 May 2005 09:29:59 -0700, John Kim <jkim at SCIENCES.SDSU.EDU> wrote:

>> from : http://mapserver.gis.umn.edu/cgi-bin/wiki.pl?PHPMapScriptRH72
>> there is :
>> Setup MapServer IMAGEDIR and cleanup script
>> ...
>
>Any tips on how you'd do this in Windows?
>
>Thanks,
>
>John
>

I am using JavaMapscript with Tomcat and developed the following class to
do the automated cleaning for me:

to execute you simple write:

new Thread(new Cleaner()).start()

The temp file path and clean interval (in milliseconds; every 12 hours) is
loaded from my configuration file. Modifying the code to not delete files
that have been created in the last couple or minutes or so, should be
fairly easy to implement:

package au.edu.qpsf.ocis;

import java.io.*;
/**
 *
 * @author Daniel Caldeweyher
 */
public class Cleaner implements Runnable {
    private String tempPath;
    private volatile boolean active;

    public void run() {
        this.active = true;
        while(active) {
            OpenCIS ocis = OpenCIS.getInstance();
            tempPath = ocis.getConfigParameter("imagepath");
            long waitInterval = Long.parseLong(ocis.getConfigParameter
("cleanup-interval"));

            File tempDir = new File(tempPath);
            if(tempDir.exists() && tempDir.isDirectory() && tempDir.canWrite
()) {
                System.out.println("Start cleanup: " +
tempDir.getAbsolutePath());
                File[] files = tempDir.listFiles();
                int numFilesDeleted = 0;
                for(File f : files) {
                    if(f.canWrite()) {
                        f.delete();
                        numFilesDeleted++;
                    }
                }
                System.out.println("Deleted " + numFilesDeleted + " temp
files, could not delete " + (files.length - numFilesDeleted) + " files.");
            }

            try { Thread.sleep(waitInterval);
            } catch (InterruptedException ie) { active = false; }
        }

    }

    public void stopCleaner() {
        active = false;
    }

    public String getTempPath() {
        return tempPath;
    }

    public void setTempPath(String tempPath) {
        this.tempPath = tempPath;
    }
}

This solution will work on any operating system, including windows which is
missing cron jobs.

Daniel