head	1.1;
access;
symbols;
locks; strict;
comment	@# @;


1.1
date	2001.08.14.22.49.13;	author leonardr;	state Exp;
branches;
next	;


desc
@@


1.1
log
@Added log view capability.
@
text
@/* ================================================================
 * Copyright (c) 2001 CollabNet.  All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * 
 * 3. The end-user documentation included with the redistribution, if
 * any, must include the following acknowlegement: "This product includes
 * software developed by CollabNet (http://www.collab.net/)."
 * Alternately, this acknowlegement may appear in the software itself, if
 * and wherever such third-party acknowlegements normally appear.
 * 
 * 4. The hosted project names must not be used to endorse or promote
 * products derived from this software without prior written
 * permission. For written permission, please contact info@@collab.net.
 * 
 * 5. Products derived from this software may not use the "Tigris" name
 * nor may "Tigris" appear in their names without prior written
 * permission of CollabNet.
 * 
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL COLLABNET OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * ====================================================================
 * 
 * This software consists of voluntary contributions made by many
 * individuals on behalf of CollabNet.
 */

package org.tigris.helm.host;

import java.util.List;

import org.apache.velocity.context.Context;

import org.apache.commons.util.StringUtils;
import org.apache.turbine.util.Log;
import org.apache.fulcrum.db.TurbineDB;
import org.apache.torque.pool.DBConnection;
import org.apache.commons.util.exception.NestableException;
import org.apache.fulcrum.TurbineServices;

import org.tigris.helm.security.RedirectException;

import org.tigris.helm.security.HelmServlet;
import org.tigris.helm.om.*;
import org.tigris.helm.tool.ContextAPI;
import org.tigris.helm.tool.cache.*;
import org.tigris.helm.tool.task.*;
import org.tigris.helm.tool.audit.AuditLog;

/**
 * Servlet for viewing logs.
 *
 * @@author <a href="mailto:leonardr@@collab.net">Leonard Richardson</a>
 * @@version $Id: AdHocQuery.java,v 1.2 2001/08/11 09:08:02 dlr Exp $
 */
public class LogView extends HelmServlet 
{
    private static final boolean DEBUG = true;

    /**
     * Button text for viewing log
     */
    private static String VIEW_LOG_ACTION = "View Log";

    /**
     * Field containing log to search.
     */
    private static String LOGFILE_ID_FIELD_KEY = "logfileID";

    /**
     * Field containing how much log to get.
     */
    private static String OFFSET_FIELD_KEY = "offset";

    /**
     * Context key for list of logfiles.
     */
    private static String LOGFILES_CONTEXT_KEY = "logfiles";

    /**
     * Context key for log text.
     */
    private static String LOG_TEXT_CONTEXT_KEY = "logText";

    /**
     * Gets a chunk of log file for your viewing pleasure.
     */
    protected String processRequest(Context context)
        throws NestableException, RedirectException
    {
        String templateName = super.processRequest(context);
        String action = getAction(context);
        try 
        {
            List logs = LogFilePeer.doSelect(HelmPeer.NO_CRITERIA);
            context.put(LOGFILES_CONTEXT_KEY, logs);

            String logfileID = ContextAPI.processRequiredField
                (context, LOGFILE_ID_FIELD_KEY, "Log file to view");
            
            String o = ContextAPI.processField
                (context, OFFSET_FIELD_KEY, "");
            
            int offset = -1;
            if (StringUtils.isValid(o))
            {
                offset = Integer.parseInt(o);
            }

            if (VIEW_LOG_ACTION.equals(action))
            {
                LogFile log = LogFilePeer.getInstance(logfileID);
                if (ContextAPI.isValidUserInput(context))
                {
                    String logText = log.contents(offset);
                    context.put(LOG_TEXT_CONTEXT_KEY, logText);
                }
            }
        }
        catch (RedirectException e)
        {
            throw e;
        }
        catch (Exception e)
        {
            throw new NestableException(e);
        }

        return templateName;  
    }
}
@
