001/*
002 * (C) Copyright 2015 Nuxeo SA (http://nuxeo.com/) and contributors.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser General Public License
006 * (LGPL) version 2.1 which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/lgpl-2.1.html
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * Contributors:
015 *     Nuxeo
016 */
017
018package org.nuxeo.ecm.showcase.content;
019
020import static org.nuxeo.ecm.core.api.event.DocumentEventTypes.DOCUMENT_IMPORTED;
021import static org.nuxeo.ecm.platform.video.VideoConstants.HAS_VIDEO_PREVIEW_FACET;
022import static org.nuxeo.ecm.platform.video.VideoConstants.VIDEO_CHANGED_EVENT;
023
024import org.apache.commons.logging.Log;
025import org.apache.commons.logging.LogFactory;
026import org.nuxeo.ecm.core.api.Blob;
027import org.nuxeo.ecm.core.api.DocumentModel;
028import org.nuxeo.ecm.core.api.NuxeoException;
029import org.nuxeo.ecm.core.api.model.Property;
030import org.nuxeo.ecm.core.event.Event;
031import org.nuxeo.ecm.core.event.EventBundle;
032import org.nuxeo.ecm.core.event.EventService;
033import org.nuxeo.ecm.core.event.PostCommitEventListener;
034import org.nuxeo.ecm.core.event.impl.DocumentEventContext;
035import org.nuxeo.ecm.platform.video.VideoHelper;
036import org.nuxeo.runtime.api.Framework;
037
038/**
039 * Override default org.nuxeo.ecm.platform.video.listener.VideoChangedListener listener as an async/postcommit one to
040 * ensure the Blob is present in the DocumentModel, because is not on the synchronised documentImported event.
041 *
042 * @author <a href="mailto:ak@nuxeo.com">Arnaud Kervern</a>
043 * @since 7.10
044 */
045public class ShowcaseVideoImportedListener implements PostCommitEventListener {
046
047    private static final Log log = LogFactory.getLog(ShowcaseVideoImportedListener.class);
048
049    @Override
050    public void handleEvent(EventBundle eventBundle) {
051        if (eventBundle.containsEventName(DOCUMENT_IMPORTED)) {
052            eventBundle.forEach(this::handle);
053        }
054    }
055
056    protected void handle(Event event) {
057        if (!(event.getContext() instanceof DocumentEventContext)) {
058            return;
059        }
060        DocumentEventContext ctx = (DocumentEventContext) event.getContext();
061        DocumentModel doc = ctx.getSourceDocument();
062        if (doc.hasFacet(HAS_VIDEO_PREVIEW_FACET) && !doc.isProxy()) {
063            Property origVideoProperty = doc.getProperty("file:content");
064
065            Blob video = (Blob) origVideoProperty.getValue();
066            updateVideoInfo(doc, video);
067
068            // only trigger the event if we really have a video
069            if (video != null) {
070                Event trigger = ctx.newEvent(VIDEO_CHANGED_EVENT);
071                EventService eventService = Framework.getLocalService(EventService.class);
072                eventService.fireEvent(trigger);
073            }
074        }
075    }
076
077    protected void updateVideoInfo(DocumentModel doc, Blob video) {
078        try {
079            VideoHelper.updateVideoInfo(doc, video);
080        } catch (NuxeoException e) {
081            // may happen if ffmpeg is not installed
082            log.error(String.format("Unable to retrieve video info: %s", e.getMessage()));
083            log.debug(e, e);
084        }
085    }
086}