view flys-client/src/main/java/de/intevation/flys/client/server/AdvanceServiceImpl.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 f2039d030b5e
children
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package de.intevation.flys.client.server;

import org.w3c.dom.Document;

import org.apache.log4j.Logger;

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

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

import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
import de.intevation.artifacts.httpclient.http.HttpClient;
import de.intevation.artifacts.httpclient.http.HttpClientImpl;
import de.intevation.artifacts.httpclient.http.response.DocumentResponseHandler;

import de.intevation.flys.client.shared.exceptions.ServerException;
import de.intevation.flys.client.shared.model.Artifact;
import de.intevation.flys.client.client.services.AdvanceService;


/**
 * This interface provides artifact specific operation ADVANCE.
 *
 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
 */
public class AdvanceServiceImpl
extends      RemoteServiceServlet
implements   AdvanceService
{
    private static final Logger logger = Logger.getLogger(AdvanceService.class);

    public static final String XPATH_RESULT = "/art:result/text()";

    public static final String OPERATION_FAILURE = "FAILED";

    public static final String ERROR_ADVANCE_ARTIFACT = "error_advance_artifact";


    public Artifact advance(
        String   locale,
        Artifact artifact,
        String   target)
    throws ServerException
    {
        logger.info("AdvanceServiceImpl.advance");

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

        Document advance = ClientProtocolUtils.newAdvanceDocument(
            artifact.getUuid(),
            artifact.getHash(),
            target);

        HttpClient client = new HttpClientImpl(url, locale);

        try {
            Document description = (Document) client.advance(
                new de.intevation.artifacts.httpclient.objects.Artifact(
                    artifact.getUuid(),
                    artifact.getHash()),
                advance,
                new DocumentResponseHandler());

            if (description == null) {
                throw new ServerException(ERROR_ADVANCE_ARTIFACT);
            }

            String result = XMLUtils.xpathString(
                description,
                XPATH_RESULT,
                ArtifactNamespaceContext.INSTANCE);

            if (result == null || !result.equals(OPERATION_FAILURE)) {
                return (Artifact) new FLYSArtifactCreator().create(description);
            }
        }
        catch (ConnectionException ce) {
            logger.error(ce, ce);
        }

        throw new ServerException(ERROR_ADVANCE_ARTIFACT);
    }
}
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