PentahoHttpSessionHelper.java

/*
 * This program is free software; you can redistribute it and/or modify it under the 
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software 
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this 
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html 
 * or from the Free Software Foundation, Inc., 
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This program 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 Lesser General Public License for more details.
 *
 * Copyright 2007 - 2009 Pentaho Corporation.  All rights reserved.
 *
*/
package org.pentaho.platform.web.http;

import java.io.File;
import java.io.IOException;
import java.util.Locale;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import org.apache.commons.lang.StringUtils;
import org.pentaho.platform.api.engine.IPentahoSession;
import org.pentaho.platform.api.util.ITempFileDeleter;
import org.pentaho.platform.engine.core.system.PentahoSystem;
import org.pentaho.platform.util.messages.LocaleHelper;
import org.pentaho.platform.web.http.session.PentahoHttpSession;
import org.pentaho.platform.web.http.session.SessionTempFileDeleter;

public class PentahoHttpSessionHelper {

  // list of the default locations to search for the solution repository
  private static final String DEFAULT_LOCATIONS[] = { "/eclipse/workspace/pentaho-solutions", //$NON-NLS-1$  Solution samples from CVS in the default eclipse workspace
      "/eclipse/workspace/pentaho-samples/solutions/test-solution" //$NON-NLS-1$  All Samples from CVS in the default eclipse workspace
  };
  
  public static IPentahoSession getPentahoSession(final HttpServletRequest request) {
    HttpSession session = request.getSession();
    String localeOverride = (String)session.getAttribute("locale_override");
    if (!StringUtils.isEmpty(localeOverride)) {
      LocaleHelper.setLocaleOverride(new Locale(localeOverride));
    }
    
    IPentahoSession userSession = (IPentahoSession) session.getAttribute(IPentahoSession.PENTAHO_SESSION_KEY);
    LocaleHelper.setLocale(request.getLocale());
    if (userSession != null) {
      return userSession;
    }
    userSession = new PentahoHttpSession(request.getRemoteUser(), request.getSession(), request.getLocale(), userSession);
    ITempFileDeleter deleter = PentahoSystem.get(ITempFileDeleter.class, userSession);
    if (deleter != null) {
      userSession.setAttribute(ITempFileDeleter.DELETER_SESSION_VARIABLE, deleter);
    }

    // TODO sbarkdull delete following line?
    LocaleHelper.setLocale(request.getLocale());

    session.setAttribute(IPentahoSession.PENTAHO_SESSION_KEY, userSession);
    return userSession;
  }

  public static String getSolutionPath(final ServletContext context) {
    File pentahoSolutions;

    // first try the web.xml setting
    String rootPath = context.getInitParameter("solution-path"); //$NON-NLS-1$
    if (StringUtils.isNotBlank(rootPath)) {
      pentahoSolutions = new File(rootPath);
      if (pentahoSolutions.exists() && pentahoSolutions.isDirectory()) {
        return rootPath;
      }
    }

    for (String element : DEFAULT_LOCATIONS) {
      pentahoSolutions = new File(element);
      if (pentahoSolutions.exists() && pentahoSolutions.isDirectory()) {
        try {
          return pentahoSolutions.getCanonicalPath();
        } catch (IOException e) {
          return pentahoSolutions.getAbsolutePath();
        }
      }
    }

    // now try the path to the WEB-INF to see if we find
    File file = new File(context.getRealPath("")); //$NON-NLS-1$
    while (file != null) {
      if (file.exists() && file.isDirectory()) {
        pentahoSolutions = new File(file.getAbsolutePath() + File.separator + "pentaho-solutions"); //$NON-NLS-1$
        if (pentahoSolutions.exists() && pentahoSolutions.isDirectory()) {
          try {
            return pentahoSolutions.getCanonicalPath();
          } catch (IOException e) {
            return pentahoSolutions.getAbsolutePath();
          }
        }
      }
      file = file.getParentFile();
    }
    return null;
  }
}