eu.learnpad.core.impl.qm.XwikiCoreFacadeRestResource.java Source code

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Here is the source code for eu.learnpad.core.impl.qm.XwikiCoreFacadeRestResource.java

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/*
 * See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package eu.learnpad.core.impl.qm;

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

import javax.ws.rs.core.MediaType;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.methods.InputStreamRequestEntity;
import org.apache.commons.httpclient.methods.PutMethod;
import org.apache.commons.httpclient.methods.RequestEntity;

import eu.learnpad.core.rest.DefaultRestResource;
import eu.learnpad.exception.LpRestException;
import eu.learnpad.exception.impl.LpRestExceptionXWikiImpl;
import eu.learnpad.qm.CoreFacade;

/*
 * The methods inherited form the CoreFacade in this
 * class should be implemented as a REST invocation
 * toward the CoreFacade binded at the provided URL
 */
public class XwikiCoreFacadeRestResource extends DefaultRestResource implements CoreFacade {

    public XwikiCoreFacadeRestResource() {
        this("localhost", 8080);
    }

    public XwikiCoreFacadeRestResource(String coreFacadeHostname, int coreFacadeHostPort) {
        // This constructor could change in the future
        this.updateConfiguration(coreFacadeHostname, coreFacadeHostPort);
    }

    public void updateConfiguration(String coreFacadeHostname, int coreFacadeHostPort) {
        // This constructor has to be fixed, since it requires changes on the
        // class eu.learnpad.core.rest.RestResource
    }

    @Override
    public void publish(String questionnairesId, String type, byte[] questionnairesFile) throws LpRestException {
        // Now actually notifying the CP via REST
        HttpClient httpClient = this.getClient();
        String uri = String.format("%s/learnpad/qm/corefacade/publish/%s", DefaultRestResource.REST_URI,
                questionnairesId);

        PutMethod putMethod = new PutMethod(uri);
        putMethod.addRequestHeader("Content-Type", MediaType.APPLICATION_OCTET_STREAM);

        NameValuePair[] queryString = new NameValuePair[1];
        queryString[0] = new NameValuePair("type", type);
        putMethod.setQueryString(queryString);

        InputStream stream = new ByteArrayInputStream(questionnairesFile);
        RequestEntity requestEntity = new InputStreamRequestEntity(stream);
        putMethod.setRequestEntity(requestEntity);

        try {
            httpClient.executeMethod(putMethod);
        } catch (IOException e) {
            LpRestExceptionXWikiImpl e1 = new LpRestExceptionXWikiImpl(e.getMessage(), e.getCause());
            throw e1;
        }
    }

    @Override
    public void generationCompleted(String questionnairesId) throws LpRestException {
        // Now actually notifying the CP via REST
        HttpClient httpClient = this.getClient();
        String uri = String.format("%s/learnpad/qm/corefacade/generationcompleted/%s", DefaultRestResource.REST_URI,
                questionnairesId);
        PutMethod putMethod = new PutMethod(uri);
        putMethod.addRequestHeader("Accept", MediaType.TEXT_PLAIN);
        try {
            httpClient.executeMethod(putMethod);
        } catch (IOException e) {
            LpRestExceptionXWikiImpl e1 = new LpRestExceptionXWikiImpl(e.getMessage(), e.getCause());
            throw e1;
        }
    }
}