view flys-client/src/main/java/de/intevation/flys/client/server/ReportServiceImpl.java @ 4488:5041105d2edd

Check if response code from GGInA is 200 OK Only parse the GGInA response if the status code is 200 OK. This improves the error message if GGInA is not available and shows the real reason instead of a JDOM error while parsing the response.
author Björn Ricks <bjoern.ricks@intevation.de>
date Wed, 14 Nov 2012 10:36:21 +0100
parents 8975e1dea436
children bafb2e81a14a
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package de.intevation.flys.client.server;

import java.io.InputStream;
import java.io.IOException;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

import org.apache.log4j.Logger;

import com.google.gwt.user.server.rpc.RemoteServiceServlet;

import org.apache.commons.lang.StringEscapeUtils;

import de.intevation.flys.client.client.services.ReportService;

import de.intevation.artifacts.common.utils.XMLUtils;
import de.intevation.artifacts.common.utils.ClientProtocolUtils;

import de.intevation.artifacts.httpclient.http.HttpClient;
import de.intevation.artifacts.httpclient.http.HttpClientImpl;

public class ReportServiceImpl
extends      RemoteServiceServlet
implements   ReportService
{
    private static final Logger logger =
        Logger.getLogger(ReportServiceImpl.class);


    @Override
    public String report(
        String collectionId,
        String locale,
        String out
    ) {
        logger.info("report: " + collectionId + " " + out);

        String url = getServletContext().getInitParameter("server-url");

        Document request = ClientProtocolUtils.newOutCollectionDocument(
            collectionId,
            out,
            "report");

        InputStream in = null;
        try {
            HttpClient client = new HttpClientImpl(url, locale);
            in = client.collectionOut(request, collectionId, out);

            if (in == null) {
                logger.debug("report: no report");
                return null;
            }

            Document report = XMLUtils.parseDocument(in);

            return buildReport(report);
        }
        catch (IOException ioe) {
            ioe.printStackTrace();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        finally {
            if (in != null) {
                try {
                    in.close();
                }
                catch (IOException ioe) {
                }
            }
        }

        return "error processing error report";
    }

    protected static String buildReport(Document document) {

        NodeList problems = document.getElementsByTagName("problem");

        StringBuilder global = new StringBuilder();
        StringBuilder kms    = new StringBuilder();

        for (int i = 0, N = problems.getLength(); i < N; ++i) {

            Element element = (Element)problems.item(i);

            String km  = element.getAttribute("km");
            String msg = element.getTextContent();

            if (km.length() > 0) {
                kms.append("<li><strong>KM ")
                   .append(StringEscapeUtils.escapeHtml(km))
                   .append("</strong>: ")
                   .append(StringEscapeUtils.escapeHtml(msg))
                   .append("</li>");
            }
            else {
                global.append("<li>")
                      .append(StringEscapeUtils.escapeHtml(msg))
                      .append("</li>");
            }
        }

        StringBuilder sb = new StringBuilder("<ul>")
            .append(global)
            .append(kms)
            .append("</ul>");

        return sb.toString();
    }
}
// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

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