org.pentaho.reporting.platform.plugin.async.WriteToJcrTask.java Source code

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Here is the source code for org.pentaho.reporting.platform.plugin.async.WriteToJcrTask.java

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/*
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU General Public License, version 2 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/gpl-2.0.html
 * or from the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This program 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 General Public License for more details.
 *
 *
 * Copyright 2006 - 2017 Hitachi Vantara.  All rights reserved.
 */
package org.pentaho.reporting.platform.plugin.async;

import org.apache.commons.io.IOUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.pentaho.platform.api.repository2.unified.IUnifiedRepository;
import org.pentaho.platform.api.repository2.unified.RepositoryFile;
import org.pentaho.platform.engine.core.system.PentahoSystem;
import org.pentaho.platform.util.StringUtil;
import org.pentaho.platform.util.web.MimeHelper;
import org.pentaho.reporting.libraries.repository.ContentLocation;
import org.pentaho.reporting.platform.plugin.repository.ReportContentRepository;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Serializable;
import java.util.concurrent.Callable;

public class WriteToJcrTask implements Callable<Serializable> {
    private static final String CANT_CREATE_FILE_IN_JCR = "Can't create file in JCR";
    private static Log log = LogFactory.getLog(WriteToJcrTask.class);

    private static final String FORMAT = "%s(%d)%s";
    private static final String TXT = ".txt";
    private static final String DEFAULT_NAME = "content";
    private static final String CANT_PERSIST_MSG = "Cant't persist report: ";
    private final IAsyncReportExecution<? extends IAsyncReportState> parentTask;
    private final InputStream inputStream;

    public WriteToJcrTask(final IAsyncReportExecution<? extends IAsyncReportState> parentTask,
            final InputStream inputStream) {

        this.parentTask = parentTask;
        this.inputStream = inputStream;
    }

    @Override
    public Serializable call() throws Exception {

        try {

            final IUnifiedRepository repo = PentahoSystem.get(IUnifiedRepository.class);

            final org.pentaho.reporting.libraries.base.util.IOUtils utils = org.pentaho.reporting.libraries.base.util.IOUtils
                    .getInstance();

            final ISchedulingDirectoryStrategy directoryStrategy = PentahoSystem
                    .get(ISchedulingDirectoryStrategy.class);

            final RepositoryFile outputFolder = directoryStrategy.getSchedulingDir(repo);

            final ReportContentRepository repository = getReportContentRepository(outputFolder);
            final ContentLocation dataLocation = repository.getRoot();

            final IAsyncReportState state = parentTask.getState();

            final String extension = MimeHelper.getExtension(state.getMimeType());
            final String targetExt = extension != null ? extension : TXT;
            final String fullPath = state.getPath();
            String cleanFileName = utils.stripFileExtension(utils.getFileName(fullPath));
            if (StringUtil.isEmpty(cleanFileName)) {
                cleanFileName = DEFAULT_NAME;
            }

            String targetName = cleanFileName + targetExt;

            int copy = 1;

            final OutputStream outputStream;

            synchronized (FORMAT) {
                while (dataLocation.exists(targetName)) {
                    targetName = String.format(FORMAT, cleanFileName, copy, targetExt);
                    copy++;
                }
                outputStream = dataLocation.createItem(targetName).getOutputStream();
            }

            if (outputStream != null) {
                try {
                    IOUtils.copy(inputStream, outputStream);
                    outputStream.flush();
                    final RepositoryFile targetFile = repo.getFile(outputFolder.getPath() + "/" + targetName);
                    return targetFile.getId();
                } finally {
                    IOUtils.closeQuietly(outputStream);
                }
            } else {
                throw new IOException(CANT_CREATE_FILE_IN_JCR);
            }

        } catch (final Exception e) {
            log.error(CANT_PERSIST_MSG, e);
        } finally {
            IOUtils.closeQuietly(inputStream);
        }

        return null;
    }

    protected ReportContentRepository getReportContentRepository(final RepositoryFile outputFolder) {
        return new ReportContentRepository(outputFolder);
    }
}