tom@8858: /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
tom@8858:  * Software engineering by Intevation GmbH
tom@8858:  *
tom@8858:  * This file is Free Software under the GNU AGPL (>=v3)
tom@8858:  * and comes with ABSOLUTELY NO WARRANTY! Check out the
tom@8858:  * documentation coming with Dive4Elements River for details.
tom@8858:  */
tom@8858: 
christian@6475: package org.dive4elements.river.client.server;
christian@6475: 
christian@6475: import java.util.HashMap;
christian@6475: import java.util.Map;
christian@6475: 
christian@6475: import javax.xml.xpath.XPathConstants;
christian@6475: 
christian@6475: import org.apache.log4j.Logger;
christian@6475: import org.dive4elements.artifacts.common.ArtifactNamespaceContext;
christian@6475: import org.dive4elements.artifacts.common.utils.XMLUtils;
christian@6475: import org.dive4elements.artifacts.httpclient.http.HttpClient;
christian@6475: import org.dive4elements.artifacts.httpclient.http.HttpClientImpl;
christian@6475: import org.dive4elements.river.client.client.services.ServerInfoService;
christian@6475: import org.w3c.dom.Document;
christian@6475: import org.w3c.dom.Element;
christian@6475: import org.w3c.dom.NodeList;
christian@6475: 
christian@6475: public class ServerInfoServiceImpl extends RemoteServiceServlet implements
christian@6475:         ServerInfoService {
christian@6475: 
christian@6475:     // This works only because currently there is only one info transmitted
christian@6475:     private static final String XPATH_INFO = "/art:server/art:info";
christian@6475: 
teichmann@8203:     private final Logger log = Logger.getLogger(ServerInfoServiceImpl.class);
christian@6475: 
christian@6475:     @Override
christian@6475:     public Map<String, String> getConfig(String locale) {
christian@6475:         Map<String, String> infoMap = new HashMap<String, String>();
christian@6475:         String url = getServletContext().getInitParameter("server-url");
christian@6475: 
christian@6475:         Document doc = XMLUtils.newDocument();
christian@6475: 
christian@6475:         XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
christian@6475:             doc,
christian@6475:             ArtifactNamespaceContext.NAMESPACE_URI,
christian@6475:             ArtifactNamespaceContext.NAMESPACE_PREFIX);
christian@6475: 
christian@6475:         doc.appendChild(ec.create("action"));
christian@6475: 
christian@6475:         HttpClient client = new HttpClientImpl(url, locale);
christian@6475: 
christian@6475:         try {
christian@6475:             Document res = client.callService(url, "server-info", doc);
christian@6475: 
christian@6475:             NodeList info = (NodeList) XMLUtils.xpath(res,
christian@6475:                     XPATH_INFO,
christian@6475:                     XPathConstants.NODESET,
christian@6475:                     ArtifactNamespaceContext.INSTANCE);
christian@6475: 
christian@6475:             for (int n = 0; n < info.getLength(); n++) {
christian@6475:                 Element el = (Element)info.item(n);
christian@6475:                 String key = el.getAttributeNS(
christian@6475:                         ArtifactNamespaceContext.NAMESPACE_URI, "key");
christian@6475:                 String val = el.getAttributeNS(
christian@6475:                         ArtifactNamespaceContext.NAMESPACE_URI, "value");
christian@6475:                 infoMap.put(key, val);
christian@6475: 
teichmann@8203:                 log.debug("ServerInfoServiceImpl: " + key + "=" + val);
christian@6475:             }
christian@6475:         }
christian@6475:         catch (Exception ex) {
teichmann@8203:             log.error(ex, ex);
christian@6475:         }
christian@6475: 
christian@6475:         return infoMap;
christian@6475:     }
christian@6475: 
christian@6475: 
christian@6475: }