org.pentaho.platform.web.http.api.resources.RepositoryFileStreamProvider.java Source code

Introduction

Here is the source code for org.pentaho.platform.web.http.api.resources.RepositoryFileStreamProvider.java

Source

/*!
 *
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.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 Lesser General Public License for more details.
 *
 *
 * Copyright (c) 2002-2018 Hitachi Vantara. All rights reserved.
 *
 */

package org.pentaho.platform.web.http.api.resources;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.pentaho.platform.api.action.IStreamingAction;
import org.pentaho.platform.api.repository2.unified.IStreamListener;
import org.pentaho.platform.api.repository2.unified.IUnifiedRepository;
import org.pentaho.platform.api.repository2.unified.RepositoryFile;
import org.pentaho.platform.api.scheduler2.IBackgroundExecutionStreamProvider;
import org.pentaho.platform.engine.core.system.PentahoSystem;
import org.pentaho.platform.repository.RepositoryFilenameUtils;
import org.pentaho.platform.repository2.unified.fileio.RepositoryFileInputStream;
import org.pentaho.platform.repository2.unified.fileio.RepositoryFileOutputStream;
import org.pentaho.platform.repository2.unified.jcr.PentahoJcrConstants;
import org.pentaho.platform.util.web.MimeHelper;

import java.io.FileNotFoundException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Serializable;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Map;

public class RepositoryFileStreamProvider implements IBackgroundExecutionStreamProvider, IStreamListener {

    // providing a serialVersionUID will help prevent quartz from throwing incompatible class exceptions
    private static final long serialVersionUID = 2812310908328498989L;

    private static final Log logger = LogFactory.getLog(RepositoryFileStreamProvider.class);

    public String outputFilePath;
    public String inputFilePath;
    public String appendDateFormat;
    private IStreamingAction streamingAction;
    private boolean autoCreateUniqueFilename;

    public RepositoryFileStreamProvider(final String inputFilePath, final String outputFilePath,
            final boolean autoCreateUniqueFilename) {
        this.outputFilePath = outputFilePath;
        this.inputFilePath = inputFilePath;
        this.autoCreateUniqueFilename = autoCreateUniqueFilename;
    }

    public RepositoryFileStreamProvider(final String inputFilePath, final String outputFilePath,
            final boolean autoCreateUniqueFilename, final String appendDateFormat) {
        this(inputFilePath, outputFilePath, autoCreateUniqueFilename);
        this.appendDateFormat = appendDateFormat;
    }

    public RepositoryFileStreamProvider() {
    }

    public IStreamingAction getStreamingAction() {
        return streamingAction;
    }

    public void setStreamingAction(IStreamingAction streamingAction) {
        this.streamingAction = streamingAction;
    }

    public String getOutputPath() {
        return outputFilePath;
    }

    public String getMimeType() {
        String mimeType = null;
        if (streamingAction != null) {
            mimeType = streamingAction.getMimeType(null);
        }
        if (mimeType == null) {
            mimeType = MimeHelper.getMimeTypeFromFileName(outputFilePath);
        }
        if (mimeType == null) {
            mimeType = "binary/octet-stream";
        }
        return mimeType;
    }

    public OutputStream getOutputStream() throws Exception {
        String tempOutputFilePath = outputFilePath;
        String extension = RepositoryFilenameUtils.getExtension(tempOutputFilePath);
        if ("*".equals(extension)) { //$NON-NLS-1$
            tempOutputFilePath = tempOutputFilePath.substring(0, tempOutputFilePath.lastIndexOf('.'));

            if (appendDateFormat != null) {
                try {
                    LocalDateTime now = LocalDateTime.now();
                    DateTimeFormatter formatter = DateTimeFormatter.ofPattern(appendDateFormat);
                    String formattedDate = now.format(formatter);
                    tempOutputFilePath += formattedDate;
                } catch (Exception e) {
                    logger.warn("Unable to calculate current date: " + e.getMessage());
                }
            }

            if (streamingAction != null) {
                String mimeType = streamingAction.getMimeType(null);
                if (mimeType != null && MimeHelper.getExtension(mimeType) != null) {
                    tempOutputFilePath += MimeHelper.getExtension(mimeType);
                }
            }
        }

        RepositoryFileOutputStream outputStream = new RepositoryFileOutputStream(tempOutputFilePath,
                autoCreateUniqueFilename, true);
        outputStream.addListener(this);
        return outputStream;
    }

    public void fileCreated(String filePath) {
        IUnifiedRepository repository = PentahoSystem.get(IUnifiedRepository.class);
        RepositoryFile outputFile = repository.getFile(filePath);
        if (outputFile != null) {
            Map<String, Serializable> fileMetadata = repository.getFileMetadata(outputFile.getId());
            RepositoryFile inputFile = repository.getFile(inputFilePath);
            if (inputFile != null) {
                fileMetadata.put(PentahoJcrConstants.PHO_CONTENTCREATOR, inputFile.getId());
                repository.setFileMetadata(outputFile.getId(), fileMetadata);
            }
        }
    }

    public String getOutputFilePath() {
        return outputFilePath;
    }

    public void setOutputFilePath(String filePath) {
        this.outputFilePath = filePath;
    }

    public String getInputFilePath() {
        return inputFilePath;
    }

    public void setInputFilePath(String filePath) {
        this.inputFilePath = filePath;
    }

    public String getAppendDateFormat() {
        return appendDateFormat;
    }

    public void setAppendDateFormat(String appendDateFormat) {
        this.appendDateFormat = appendDateFormat;
    }

    public InputStream getInputStream() throws Exception {
        IUnifiedRepository repository = PentahoSystem.get(IUnifiedRepository.class);
        RepositoryFile repositoryFile = repository.getFile(inputFilePath);
        if ((repositoryFile == null) || repositoryFile.isFolder()) {
            throw new FileNotFoundException();
        }
        return new RepositoryFileInputStream(repositoryFile);
    }

    public boolean autoCreateUniqueFilename() {
        return this.autoCreateUniqueFilename;
    }

    public String toString() {
        // TODO Auto-generated method stub
        return "input file = " + inputFilePath + ":" + "outputFile = " + outputFilePath;
    }
}