UploadRestlet.java

/*
 * (C) Copyright 2006-2007 Nuxeo SA (http://nuxeo.com/) and others.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Contributors:
 *     Nuxeo - initial API and implementation
 *
 * $Id: JOOoConvertPluginImpl.java 18651 2007-05-13 20:28:53Z sfermigier $
 */

package org.nuxeo.ecm.platform.ui.web.restAPI;

import static org.jboss.seam.ScopeType.EVENT;

import java.io.IOException;
import java.io.InputStream;
import java.io.Serializable;
import java.util.List;

import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.dom4j.Element;
import org.dom4j.dom.DOMDocument;
import org.dom4j.dom.DOMDocumentFactory;
import org.jboss.seam.annotations.In;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Scope;
import org.nuxeo.ecm.core.api.Blob;
import org.nuxeo.ecm.core.api.Blobs;
import org.nuxeo.ecm.core.api.CoreSession;
import org.nuxeo.ecm.core.api.DocumentModel;
import org.nuxeo.ecm.core.api.IdRef;
import org.nuxeo.ecm.core.api.NuxeoException;
import org.nuxeo.ecm.platform.ui.web.api.NavigationContext;
import org.nuxeo.ecm.platform.ui.web.api.SimpleFileManager;
import org.nuxeo.ecm.platform.ui.web.util.FileUploadHelper;
import org.nuxeo.ecm.platform.util.RepositoryLocation;
import org.restlet.data.CharacterSet;
import org.restlet.data.MediaType;
import org.restlet.data.Request;
import org.restlet.data.Response;
import org.restlet.resource.Representation;
import org.restlet.resource.StringRepresentation;

/**
 * Restlet to import files as nuxeo documents using the pluggable FileManager service. This restlet is mainly used for
 * desktop integration with drag and drop browser plugins.
 *
 * @author tdelprat
 */
@Name("uploadRestlet")
@Scope(EVENT)
public class UploadRestlet extends BaseNuxeoRestlet implements Serializable {

    private static final Log log = LogFactory.getLog(UploadRestlet.class);

    private static final long serialVersionUID = -7858792615823015193L;

    @In(create = true)
    protected transient NavigationContext navigationContext;

    protected CoreSession documentManager;

    @In(create = true)
    protected transient SimpleFileManager FileManageActions;

    @Override
    public void handle(Request req, Response res) {
        String repo = (String) req.getAttributes().get("repo");
        String docid = (String) req.getAttributes().get("docid");
        String fileName = (String) req.getAttributes().get("filename");

        DOMDocumentFactory domFactory = new DOMDocumentFactory();
        DOMDocument result = (DOMDocument) domFactory.createDocument();

        DocumentModel targetContainer;
        try {
            navigationContext.setCurrentServerLocation(new RepositoryLocation(repo));
            documentManager = navigationContext.getOrCreateDocumentManager();
            targetContainer = documentManager.getDocument(new IdRef(docid));
        } catch (NuxeoException e) {
            handleError(res, e);
            return;
        }

        if (targetContainer != null) {
            List<Blob> blobs = null;
            try {
                blobs = FileUploadHelper.parseRequest(req);
            } catch (FileUploadException | IOException e) {
                handleError(res, e);
                return;
            }

            if (blobs == null) {
                // mono import
                String outcome;
                try {
                    Blob inputBlob;
                    try (InputStream in = req.getEntity().getStream()) {
                        inputBlob = Blobs.createBlob(in);
                    }
                    inputBlob.setFilename(fileName);
                    outcome = FileManageActions.addBinaryFileFromPlugin(inputBlob, fileName, targetContainer);
                } catch (NuxeoException | IOException e) {
                    outcome = "ERROR : " + e.getMessage();
                }
                result.addElement("upload").setText(outcome);
            } else {
                // multiple file upload
                Element uploads = result.addElement("uploads");
                for (Blob blob : blobs) {
                    String outcome;
                    try {
                        outcome = FileManageActions.addBinaryFileFromPlugin(blob, blob.getFilename(), targetContainer);
                    } catch (NuxeoException e) {
                        log.error("error importing " + blob.getFilename() + ": " + e.getMessage(), e);
                        outcome = "ERROR : " + e.getMessage();
                    }
                    uploads.addElement("upload").setText(outcome);
                }
            }
        }
        Representation rep = new StringRepresentation(result.asXML(), MediaType.APPLICATION_XML);
        rep.setCharacterSet(CharacterSet.UTF_8);
        res.setEntity(rep);
    }

}