001    //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/portal/owswatch/validator/WMSGetMapValidator.java $
002    /*----------------------------------------------------------------------------
003     This file is part of deegree, http://deegree.org/
004     Copyright (C) 2001-2009 by:
005       Department of Geography, University of Bonn
006     and
007       lat/lon GmbH
008    
009     This library is free software; you can redistribute it and/or modify it under
010     the terms of the GNU Lesser General Public License as published by the Free
011     Software Foundation; either version 2.1 of the License, or (at your option)
012     any later version.
013     This library is distributed in the hope that it will be useful, but WITHOUT
014     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
015     FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
016     details.
017     You should have received a copy of the GNU Lesser General Public License
018     along with this library; if not, write to the Free Software Foundation, Inc.,
019     59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020    
021     Contact information:
022    
023     lat/lon GmbH
024     Aennchenstr. 19, 53177 Bonn
025     Germany
026     http://lat-lon.de/
027    
028     Department of Geography, University of Bonn
029     Prof. Dr. Klaus Greve
030     Postfach 1147, 53001 Bonn
031     Germany
032     http://www.geographie.uni-bonn.de/deegree/
033    
034     e-mail: info@deegree.org
035    ----------------------------------------------------------------------------*/
036    
037    package org.deegree.portal.owswatch.validator;
038    
039    import java.io.InputStream;
040    import java.io.Serializable;
041    
042    import javax.imageio.ImageIO;
043    
044    import org.apache.commons.httpclient.HttpMethodBase;
045    import org.deegree.framework.util.StringTools;
046    
047    import org.deegree.portal.owswatch.Status;
048    import org.deegree.portal.owswatch.ValidatorResponse;
049    
050    /**
051     * A specific implementation of AbstractValidator
052     *
053     * @author <a href="mailto:elmasry@lat-lon.de">Moataz Elmasry</a>
054     * @author last edited by: $Author: jmays $
055     *
056     * @version $Revision: 20271 $, $Date: 2009-10-21 13:07:15 +0200 (Mi, 21 Okt 2009) $
057     */
058    public class WMSGetMapValidator extends AbstractValidator implements Serializable {
059    
060        /**
061         *
062         */
063        private static final long serialVersionUID = -5983538240882784183L;
064    
065        /*
066         * (non-Javadoc)
067         *
068         * @see org.deegree.portal.owswatch.validator.AbstractValidator#validateAnswer(org.apache.commons.httpclient.HttpMethodBase,
069         *      int)
070         */
071        @Override
072        public ValidatorResponse validateAnswer( HttpMethodBase method, int statusCode ) {
073    
074            String contentType = method.getResponseHeader( "Content-Type" ).getValue();
075            String lastMessage = null;
076            Status status = null;
077    
078            if ( !contentType.contains( "image" ) ) {
079                if ( !contentType.contains( "xml" ) ) {
080                    status = Status.RESULT_STATE_UNEXPECTED_CONTENT;
081                    lastMessage = StringTools.concat( 100, "Error: Response Content is ", contentType, " not image" );
082                    return new ValidatorResponse( lastMessage, status );
083                } else {
084                    return validateXmlServiceException( method );
085                }
086            }
087    
088            try {
089                InputStream stream = copyStream( method.getResponseBodyAsStream() );
090                stream.reset();
091                ImageIO.read( stream );
092                status = Status.RESULT_STATE_AVAILABLE;
093                lastMessage = status.getStatusMessage();
094                return new ValidatorResponse( lastMessage, status );
095            } catch ( Exception e ) {
096                status = Status.RESULT_STATE_SERVICE_UNAVAILABLE;
097                lastMessage = e.getLocalizedMessage();
098                return new ValidatorResponse( lastMessage, status );
099            }
100        }
101    }