org.pentaho.webpackage.deployer.UrlTransformer.java Source code

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Here is the source code for org.pentaho.webpackage.deployer.UrlTransformer.java

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/*
 * 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 2002 - 2017 Pentaho Corporation. All rights reserved.
 */

package org.pentaho.webpackage.deployer;

import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;
import org.apache.felix.fileinstall.ArtifactUrlTransformer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.net.URL;
import java.util.zip.ZipFile;

public class UrlTransformer implements ArtifactUrlTransformer {
    private Logger logger = LoggerFactory.getLogger(UrlTransformer.class);

    @Override
    public boolean canHandle(File file) {
        if (!file.exists()) {
            return false;
        }

        if (file.getName().endsWith(".tgz")) {
            TarArchiveInputStream tarInput = null;
            try {
                tarInput = new TarArchiveInputStream(new GzipCompressorInputStream(new FileInputStream(file)));
                TarArchiveEntry currentEntry = tarInput.getNextTarEntry();
                while (currentEntry != null) {
                    if (currentEntry.getName().endsWith("package.json")) {
                        return true;
                    }

                    currentEntry = tarInput.getNextTarEntry();
                }
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                if (tarInput != null) {
                    try {
                        tarInput.close();
                    } catch (IOException ignored) {
                        // Ignore
                    }
                }
            }

            return false;
        } else if (file.getName().endsWith(".zip") || file.getName().endsWith(".jar")) {
            ZipFile zipFile = null;

            try {
                zipFile = new ZipFile(file);

                return zipFile.getEntry("package.json") != null && zipFile.getEntry("META-INF/MANIFEST.MF") == null;
            } catch (IOException e) {
                this.logger.error(e.getMessage(), e);
            } finally {
                if (zipFile != null) {
                    try {
                        zipFile.close();
                    } catch (IOException ignored) {
                        // Ignore
                    }
                }
            }
        }

        return false;
    }

    @Override
    public URL transform(URL url) throws Exception {
        return new URL("pentaho-web-package", null, url.toExternalForm());
    }
}