Run.java example

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/*
JTestServer is a client/server framework for testing any JVM implementation.
 
Copyright (C) 2009  Fabien DUMINY (fduminy@jnode.org)

JTestServer is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

JTestServer is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/
package org.jtestserver.client;

import java.io.File;
import java.io.FilenameFilter;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

/**
 * @author Fabien DUMINY (fduminy@jnode.org)
 *
 */
public class Run {
    private static final String ROOT_WORK_DIR_PREFIX = "run_";
    
    private static final DateFormat TIMESTAMP_FORMAT = new SimpleDateFormat("yyyyMMdd_HHmmss_SSS");
    
    public static Run getLatest(Config config) {
        config.getWorkDir().mkdirs();
        String[] runs = config.getWorkDir().list(new FilenameFilter() {
            @Override
            public boolean accept(File dir, String name) {
                return name.startsWith(ROOT_WORK_DIR_PREFIX);
            }
        });
        
        Date latest = null;
        String latestRun = null;
        for (String run : runs) {
            if (latest == null) {
                latest = getTimestamp(run);
                latestRun = run;
            } else {
                Date d = getTimestamp(run);
                if (d.after(latest)) {
                    latest = d;
                    latestRun = run;
                }
            }
        }
        
        Run result = null;
        if (latest != null) {
            result = new Run(new File(config.getWorkDir(), latestRun), latest);
        }
        return result;
    }    
    
    public static Run create(Config config) {
        Date timestamp = Calendar.getInstance().getTime();
        String run = ROOT_WORK_DIR_PREFIX + TIMESTAMP_FORMAT.format(timestamp);
        File rootWorkDir = new File(config.getWorkDir(), run);
        rootWorkDir.mkdirs();
        return new Run(rootWorkDir, timestamp);
    }
    
    private static Date getTimestamp(String run) {
        try {
            return TIMESTAMP_FORMAT.parse(run.substring(
                    ROOT_WORK_DIR_PREFIX.length()));
        } catch (ParseException e) {
            throw new RuntimeException(e);
        }
    }

    private final File rootWorkDir;
    private final Date timestamp;
    private final String timestampString;
    
    private Run(File rootWorkDir, Date timestamp) {
        this.rootWorkDir = rootWorkDir;
        this.timestamp = timestamp;
        this.timestampString = TIMESTAMP_FORMAT.format(timestamp); 
    }
    
    public Date getTimestamp() {
        return timestamp;
    }

    public String getTimestampString() {
        return timestampString;
    }
    
    public File getWorkingTests() {
        return new File(rootWorkDir, "working-tests.txt");
    }
    
    public File getCrashingTests() {
        return new File(rootWorkDir, "crashing-tests.txt");
    }

    /**
     * @return
     */
    public File getReportXml() {
        return new File(rootWorkDir, "report.xml");
    }
}