001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/ogcwebservices/wpvs/WMSInvoker.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.ogcwebservices.wpvs;
038
039 import java.awt.Color;
040 import java.awt.Graphics2D;
041 import java.awt.Image;
042 import java.awt.image.BufferedImage;
043 import java.util.Map;
044
045 import org.deegree.datatypes.values.Values;
046 import org.deegree.framework.log.ILogger;
047 import org.deegree.framework.log.LoggerFactory;
048 import org.deegree.framework.util.IDGenerator;
049 import org.deegree.framework.util.StringTools;
050 import org.deegree.ogcwebservices.OGCWebService;
051 import org.deegree.ogcwebservices.OGCWebServiceException;
052 import org.deegree.ogcwebservices.wms.operation.GetMap;
053 import org.deegree.ogcwebservices.wms.operation.GetMapResult;
054 import org.deegree.ogcwebservices.wpvs.configuration.AbstractDataSource;
055 import org.deegree.ogcwebservices.wpvs.configuration.LocalWMSDataSource;
056 import org.deegree.ogcwebservices.wpvs.utils.ImageUtils;
057 import org.deegree.ogcwebservices.wpvs.utils.ResolutionStripe;
058
059 /**
060 * Invoker for a Web Map Service.
061 *
062 * @author <a href="mailto:taddei@lat-lon.de">Ugo Taddei</a>
063 * @author last edited by: $Author: mschneider $
064 *
065 * $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
066 */
067 public class WMSInvoker extends GetViewServiceInvoker {
068
069 private static final ILogger LOG = LoggerFactory.getLogger( WMSInvoker.class );
070
071 private int id;
072
073 /**
074 * Creates a new instance of this class.
075 *
076 * @param owner
077 * the handler that owns this invoker
078 * @param id
079 * which can be used to sort all the request/responses in the resolutionStripe.
080 */
081 public WMSInvoker( ResolutionStripe owner, int id ) {
082 super( owner );
083 this.id = id;
084 }
085
086 @Override
087 public void invokeService( AbstractDataSource dataSource ) {
088 // int count = 0;
089 if ( !( dataSource != null && ( AbstractDataSource.LOCAL_WMS == dataSource.getServiceType() || AbstractDataSource.REMOTE_WMS == dataSource.getServiceType() ) ) ) {
090 LOG.logError( "The given AbstractDataSource is no LocalWMSDataSource instance. It is needed for a WMSInvoker" );
091 throw new RuntimeException( "DataSource should be a WMS-instance for a WMSInvoker" );
092 }
093 OGCWebService service = null;
094 try {
095 service = dataSource.getOGCWebService();
096 } catch ( OGCWebServiceException ogcwe ) {
097 LOG.logError( ogcwe.getMessage() );
098 throw new RuntimeException( ogcwe );
099 }
100
101 Object response = null;
102 try {
103 GetMap getMapRequest = createGetMapRequest( (LocalWMSDataSource) dataSource );
104 if ( getMapRequest == null ) {
105 return;
106 }
107 LOG.logDebug( dataSource.getName() + ": WMS request: " + getMapRequest );
108 /**
109 * Invoke the wms service.
110 */
111 response = service.doService( getMapRequest );
112 } catch ( OGCWebServiceException ogcwse ) {
113 if ( !Thread.currentThread().isInterrupted() ) {
114 StringBuilder msg = new StringBuilder("Error when performing WMS (" );
115 msg.append( dataSource.getName() );
116 msg.append( "GetMap: ");
117 msg.append( ogcwse.getLocalizedMessage() );
118 LOG.logError( msg.toString(), ogcwse );
119 resolutionStripe.setTextureRetrievalException( dataSource.getName().getFormattedString() + id,
120 ogcwse );
121 }
122
123 return;
124 }
125 if ( response != null ) {
126 if ( response instanceof GetMapResult ) {
127 BufferedImage responseImage = null;
128 // the exception may be inside the response
129 if ( ( (GetMapResult) response ).getException() != null ) {
130 resolutionStripe.setTextureRetrievalException( dataSource.getName().getFormattedString() + id,
131 ( (GetMapResult) response ).getException() );
132 } else {
133 responseImage = (BufferedImage) ( (GetMapResult) response ).getMap();
134 // LOG.logDebug( StringTools.concat( 100, "WMS RESULT: ", response ) );
135 if ( responseImage != null ) {
136 Color[] colors = ( (LocalWMSDataSource) dataSource ).getTransparentColors();
137 if ( colors != null && colors.length > 0 ) {
138 ImageUtils imgUtil = new ImageUtils( colors );
139 Image img = imgUtil.filterImage( responseImage );
140 Graphics2D g2d = (Graphics2D) responseImage.getGraphics();
141 g2d.drawImage( img, 0, 0, null );
142 g2d.dispose();
143 }
144 resolutionStripe.addTexture( ( dataSource.getName().getFormattedString() + id ), responseImage );
145 }
146 }
147 }
148 }
149 }
150
151 /**
152 * Creates a new GetMap request for the given datasource.
153 *
154 * @param ds
155 * the WMs datasource
156 * @return a new GetMap request
157 */
158 private GetMap createGetMapRequest( LocalWMSDataSource ds ) {
159
160 GetMap getMapRequest = ds.getPartialGetMapRequest();
161
162 Values elevation = null;
163 Values time = null;
164 Map<String, Values> sampleDim = null;
165
166 // int tileSize = owner.getMaxTileSize();
167 int tileWidth = resolutionStripe.getRequestWidthForBBox();
168 int tileHeight = resolutionStripe.getRequestHeightForBBox();
169 if ( tileWidth == -1 || tileHeight == -1 ) {
170 LOG.logError( StringTools.concat( 500,
171 "Not creating WMS-GetMap because the height or the width of the image are -1: " ) );
172 return null;
173 }
174 // GeometryUtils.getImageSizeForSurface( (RankedSurface)box, owner.getMaxTileSize());
175
176 IDGenerator idg = IDGenerator.getInstance();
177 getMapRequest = GetMap.create( getMapRequest.getVersion(), String.valueOf( idg.generateUniqueID() ),
178 getMapRequest.getLayers(), elevation, sampleDim, getMapRequest.getFormat(),
179 tileWidth, tileHeight, resolutionStripe.getCRSName().getFormattedString(),
180 resolutionStripe.getSurface().getEnvelope(), getMapRequest.getTransparency(),
181 getMapRequest.getBGColor(), getMapRequest.getExceptions(), time, null, null,
182 null );
183
184 return getMapRequest;
185 }
186 }