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

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Here is the source code for eu.learnpad.core.impl.qm.XwikiBridgeInterfaceRestResource.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.IOException;
import java.io.InputStream;

import javax.inject.Named;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.methods.ByteArrayRequestEntity;
import org.apache.commons.httpclient.methods.InputStreamRequestEntity;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.PutMethod;
import org.apache.commons.httpclient.methods.RequestEntity;
import org.xwiki.component.annotation.Component;
import org.xwiki.component.phase.Initializable;
import org.xwiki.component.phase.InitializationException;

import eu.learnpad.core.rest.DefaultRestResource;
import eu.learnpad.exception.impl.LpRestExceptionXWikiImpl;
import eu.learnpad.me.rest.data.ModelSetType;
import eu.learnpad.qm.BridgeInterface;

/*
 * The methods inherited form the BridgeInterface in this
 * class should be implemented as a REST invocation
 * toward the BridgeInterface binded at the provided URL
 */
@Component
@Named("qm")
public class XwikiBridgeInterfaceRestResource extends DefaultRestResource
        implements BridgeInterface, Initializable {

    @Override
    public void initialize() throws InitializationException {
        // TODO this initialization has to be fixed similarly to the implementation for the other components. see there.
        this.restPrefix = "";
    }

    @Override
    public void importModelSet(String modelSetId, ModelSetType type, InputStream modelContent)
            throws LpRestExceptionXWikiImpl {
        // Notify QM about a new model set imported
        HttpClient httpClient = this.getClient();
        String uri = String.format("%s/learnpad/qm/bridge/importmodel/%s", DefaultRestResource.REST_URI,
                modelSetId);
        PutMethod putMethod = new PutMethod(uri);
        putMethod.addRequestHeader("Accept", "application/xml");

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

        RequestEntity requestEntity = new InputStreamRequestEntity(modelContent);
        putMethod.setRequestEntity(requestEntity);

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

    }

    private String localGenerateQuestionnaires(String modelSetId, String type, byte[] configurationFile)
            throws LpRestExceptionXWikiImpl {
        // Ask the QM to generate new questionnaire for a given model set
        // that has been already imported
        HttpClient httpClient = this.getClient();
        String uri = String.format("%s/learnpad/qm/bridge/generate/%s", DefaultRestResource.REST_URI, modelSetId);
        PostMethod postMethod = new PostMethod(uri);

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

        RequestEntity requestEntity = null;
        if (configurationFile != null) {
            postMethod.addRequestHeader("Content-Type", "application/octet-stream");
            requestEntity = new ByteArrayRequestEntity(configurationFile);
        }
        postMethod.setRequestEntity(requestEntity);

        String genProcessID = null;
        try {
            httpClient.executeMethod(postMethod);
            genProcessID = postMethod.getResponseBodyAsString();
        } catch (IOException e) {
            throw new LpRestExceptionXWikiImpl(e.getMessage(), e);
        }
        return genProcessID;
    }

    @Override
    public String generateQuestionnaires(String modelSetId, String type, byte[] configurationFile)
            throws LpRestExceptionXWikiImpl {
        String genProcessID = this.localGenerateQuestionnaires(modelSetId, type, configurationFile);
        return genProcessID;
    }

    @Override
    public String generateQuestionnaires(String modelSetId, String type) throws LpRestExceptionXWikiImpl {
        String genProcessID = this.localGenerateQuestionnaires(modelSetId, type, null);
        return genProcessID;
    }

    @Override
    public String getGenerationStatus(String generationProcessId) throws LpRestExceptionXWikiImpl {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public String createQuestionnaire() throws LpRestExceptionXWikiImpl {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public void addQuestionToQuestionnaire(String creationProcessId, String question, String expectedAnswer)
            throws LpRestExceptionXWikiImpl {
        // TODO Auto-generated method stub
    }

    @Override
    public void finalizeQuestionnaire(String creationProcessId, String type) throws LpRestExceptionXWikiImpl {
        // TODO Auto-generated method stub
    }
}