001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/portal/owswatch/ServicesConfigurationWriter.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;
038
039 import java.io.BufferedWriter;
040 import java.io.FileWriter;
041 import java.io.IOException;
042 import java.util.Enumeration;
043 import java.util.Map;
044 import java.util.Properties;
045
046 import org.deegree.framework.xml.XMLFragment;
047 import org.deegree.framework.xml.XMLTools;
048 import org.w3c.dom.Element;
049
050 /**
051 * This class is used to write services xml. This xml contains the needed informationfor the ServiceMonitor The main
052 * operations here are add/remove. The file will be rewriten after any of these operations
053 *
054 * @author <a href="mailto:elmasry@lat-lon.de">Moataz Elmasry</a>
055 * @author last edited by: $Author: jmays $
056 *
057 * @version $Revision: 20271 $, $Date: 2009-10-21 13:07:15 +0200 (Mi, 21. Okt 2009) $
058 */
059 public class ServicesConfigurationWriter {
060
061 private String servicesUrl = null;
062
063 private String prefix = null;
064
065 /**
066 * @param servicesUrl
067 * @param prefix
068 */
069 public ServicesConfigurationWriter( String servicesUrl, String prefix ) {
070 this.servicesUrl = servicesUrl;
071 this.prefix = prefix;
072 }
073
074 /**
075 * Build an xml document from the current stored services
076 *
077 * @param services
078 * @return root element with all services
079 */
080 private Element buildXmlDocument( Map<Integer, ServiceConfiguration> services ) {
081
082 String dotPrefix = prefix + ":";
083 Element root = XMLTools.create().createElementNS( CommonNamepspaces.DEEGREEWSNS.toASCIIString(),
084 dotPrefix + "Config" );
085 root.setAttribute( "service_id_sequence", String.valueOf( ServiceConfiguration.getServiceCounter() ) );
086
087 for ( ServiceConfiguration service : services.values() ) {
088 buildServiceElement( service, root );
089 }
090 return root;
091 }
092
093 /**
094 * Builds an Element from the given service
095 *
096 * @param service
097 * from where the Element will be built
098 * @param root
099 * where the service to be added
100 * @return the newly build service element
101 */
102 private Element buildServiceElement( ServiceConfiguration service, Element root ) {
103
104 String dotPrefix = prefix + ":";
105 Element serviceElem = XMLTools.appendElement( root, CommonNamepspaces.DEEGREEWSNS, dotPrefix
106 + Constants.SERVICE_MONITOR );
107 serviceElem.setAttribute( "id", String.valueOf( service.getServiceid() ) );
108 // Appending the basic elements
109 XMLTools.appendElement( serviceElem, CommonNamepspaces.DEEGREEWSNS, dotPrefix + Constants.ACTIVE,
110 String.valueOf( service.isActive() ) );
111 XMLTools.appendElement( serviceElem, CommonNamepspaces.DEEGREEWSNS, dotPrefix + Constants.TIMEOUT_KEY,
112 String.valueOf( service.getTimeout() ) );
113 XMLTools.appendElement( serviceElem, CommonNamepspaces.DEEGREEWSNS, dotPrefix + Constants.INTERVAL,
114 String.valueOf( service.getRefreshRate() ) );
115 XMLTools.appendElement( serviceElem, CommonNamepspaces.DEEGREEWSNS, dotPrefix + Constants.ONLINE_RESOURCE,
116 String.valueOf( service.getOnlineResource() ) );
117 XMLTools.appendElement( serviceElem, CommonNamepspaces.DEEGREEWSNS, dotPrefix + Constants.SERVICE_NAME,
118 String.valueOf( service.getServiceName() ) );
119 Element httpMethodElem = XMLTools.appendElement( serviceElem, CommonNamepspaces.DEEGREEWSNS,
120 dotPrefix + Constants.HTTP_METHOD );
121 httpMethodElem.setAttribute( "type", service.getHttpMethod() );
122
123 // Appending to the HttpMethod Element the request keys/values
124 Properties props = service.getProperties();
125 Enumeration keys = props.keys();
126 while ( keys.hasMoreElements() ) {
127 String key = (String) keys.nextElement();
128 String value = String.valueOf( props.get( key ) );
129 XMLTools.appendElement( httpMethodElem, CommonNamepspaces.DEEGREEWSNS, dotPrefix + key, value );
130 }
131 return serviceElem;
132 }
133
134 /**
135 * Writes the given root to the xml file
136 *
137 * @param root
138 * to be written
139 * @throws IOException
140 * In case the file path is invalid or the file is locked
141 */
142 private void writeToXmlDocument( Element root )
143 throws IOException {
144
145 BufferedWriter writer = new BufferedWriter( new FileWriter( servicesUrl ) );
146
147 try {
148 XMLFragment frag = new XMLFragment( root );
149 String text = frag.getAsPrettyString();
150 writer.write( text );
151 writer.close();
152 } catch ( Exception e ) {
153 throw new IOException( "An error occured while writing the xml file: " + e.getMessage() );
154 }
155
156 }
157
158 /**
159 * Writes the root element to the given document
160 *
161 * @param serviceconfigs
162 *
163 * @throws IOException
164 */
165 public void writeDocument( Map<Integer, ServiceConfiguration> serviceconfigs )
166 throws IOException {
167
168 Element root = buildXmlDocument( serviceconfigs );
169 writeToXmlDocument( root );
170 }
171 }