org.structr.web.common.ClosingFileOutputStream.java Source code

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Here is the source code for org.structr.web.common.ClosingFileOutputStream.java

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/**
 * Copyright (C) 2010-2018 Structr GmbH
 *
 * This file is part of Structr <http://structr.org>.
 *
 * Structr is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * Structr 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with Structr.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.structr.web.common;

import java.io.FileOutputStream;
import java.io.IOException;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.structr.core.app.StructrApp;
import org.structr.core.graph.NodeInterface;
import org.structr.core.graph.Tx;
import org.structr.core.property.PropertyMap;
import org.structr.web.entity.File;
import org.structr.web.entity.Image;

/**
 */
public class ClosingFileOutputStream extends FileOutputStream {

    private static final Logger logger = LoggerFactory.getLogger(ClosingFileOutputStream.class);

    private boolean notifyIndexerAfterClosing = false;
    private boolean closed = false;
    private File thisFile = null;
    private java.io.File file = null;

    public ClosingFileOutputStream(final File thisFile, final boolean append,
            final boolean notifyIndexerAfterClosing) throws IOException {

        super(thisFile.getFileOnDisk(), append);

        this.notifyIndexerAfterClosing = notifyIndexerAfterClosing;
        this.thisFile = thisFile;
        this.file = thisFile.getFileOnDisk();
    }

    @Override
    public void close() throws IOException {

        if (closed) {
            return;
        }

        try (Tx tx = StructrApp.getInstance().tx()) {

            super.close();

            final String _contentType = FileHelper.getContentMimeType(thisFile);
            final PropertyMap changedProperties = new PropertyMap();

            changedProperties.put(StructrApp.key(File.class, "checksum"), FileHelper.getChecksum(file));
            changedProperties.put(StructrApp.key(File.class, "size"), file.length());
            changedProperties.put(StructrApp.key(File.class, "contentType"), _contentType);

            if (StringUtils.startsWith(_contentType, "image") || ImageHelper.isImageType(thisFile.getName())) {
                changedProperties.put(NodeInterface.type, Image.class.getSimpleName());
            }

            thisFile.unlockSystemPropertiesOnce();
            thisFile.setProperties(thisFile.getSecurityContext(), changedProperties);

            thisFile.increaseVersion();

            if (notifyIndexerAfterClosing) {
                thisFile.notifyUploadCompletion();
            }

            tx.success();

        } catch (Throwable ex) {

            logger.error("Could not determine or save checksum and size after closing file output stream", ex);

        }

        closed = true;
    }
}