Java tutorial
/* * ### * Phresco Service Implemenation * * Copyright (C) 1999 - 2012 Photon Infotech Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ### */ /******************************************************************************* * Copyright (c) 2011 Photon. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Photon Public License v1.0 * which accompanies this distribution, and is available at * http://www.photon.in/legal/ppl-v10.html * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * Contributors: * Photon - initial API and implementation ******************************************************************************/ package com.photon.phresco.service.dependency.impl; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.UUID; import org.apache.commons.io.FileUtils; import org.apache.commons.io.IOUtils; import org.apache.commons.lang.StringUtils; import org.apache.log4j.Logger; import com.photon.phresco.exception.PhrescoException; import com.photon.phresco.service.api.PhrescoServerFactory; import com.photon.phresco.util.ArchiveUtil; import com.photon.phresco.util.ArchiveUtil.ArchiveType; import com.photon.phresco.util.Utility; /** * @author arunachalam_l * */ public final class DependencyUtils { private static final Logger S_LOGGER = Logger.getLogger(DependencyUtils.class); private static Boolean isDebugEnabled = S_LOGGER.isDebugEnabled(); private DependencyUtils() { //restrict instantiation } /** * Finds out the {@link ArchiveType} for the given extension. * @param extension * @return */ public static ArchiveType getArchiveType(String extension) { if (isDebugEnabled) { S_LOGGER.debug("Entering Method DependencyUtils.getArchiveType(String extension)"); } ArchiveType archiveType = ArchiveType.ZIP; if (extension.equals(".tar.gz")) { archiveType = ArchiveType.TARGZ; } else if (extension.endsWith(".tar")) { archiveType = ArchiveType.TAR; } return archiveType; } /** * Returns the file extension of the content. * @param contentURL * @return */ public static String getExtension(String contentURL) { if (isDebugEnabled) { S_LOGGER.debug("Entering Method DependencyUtils.getExtension(String contentURL)"); } String extension = ".zip"; if (contentURL.endsWith("tar.gz")) { extension = ".tar.gz"; } else if (contentURL.endsWith("tar")) { extension = ".tar"; } return extension; } /** * Extracts the given compressed file (of type tar, targz, and zip) into given location. * See also * {@link ArchiveType} and {@link ArchiveUtil} * @param contentURL * @param path * @throws PhrescoException */ public static void extractFiles(String contentURL, File path) throws PhrescoException { if (isDebugEnabled) { S_LOGGER.debug("Entering Method DependencyUtils.extractFiles(String contentURL, File path)"); S_LOGGER.debug("extractFiles() Filepath=" + path.getPath()); } extractFiles(contentURL, null, path); } /** * Extracts the given compressed file (of type tar, targz, and zip) into given location. * See also * {@link ArchiveType} and {@link ArchiveUtil} * @param contentURL * @param path * @throws PhrescoException */ public static void extractFiles(String contentURL, String folderName, File path) throws PhrescoException { if (isDebugEnabled) { S_LOGGER.debug( "Entering Method DependencyUtils.extractFiles(String contentURL, String folderName, File path)"); } assert !StringUtils.isEmpty(contentURL); String extension = getExtension(contentURL); File archive = new File(Utility.getPhrescoTemp(), UUID.randomUUID().toString() + extension); FileOutputStream fos = null; OutputStream out = null; try { InputStream inputStream = PhrescoServerFactory.getRepositoryManager().getArtifactAsStream(contentURL); fos = new FileOutputStream(archive); out = new BufferedOutputStream(fos); IOUtils.copy(inputStream, out); out.flush(); out.close(); fos.close(); ArchiveType archiveType = getArchiveType(extension); if (isDebugEnabled) { S_LOGGER.debug("extractFiles() path=" + path.getPath()); } ArchiveUtil.extractArchive(archive.toString(), path.getAbsolutePath(), folderName, archiveType); archive.delete(); } catch (FileNotFoundException e) { return; } catch (IOException e) { throw new PhrescoException(e); } catch (PhrescoException pe) { if (pe.getCause() instanceof FileNotFoundException) { return; } throw pe; } finally { Utility.closeStream(fos); Utility.closeStream(out); } } public static void copyFilesTo(File[] files, File destPath) throws IOException { if (isDebugEnabled) { S_LOGGER.debug("Entering Method DependencyUtils.copyFilesTo(File[] files, File destPath)"); S_LOGGER.error(" copyFilesTo() Destination Filepath =" + destPath.getPath()); } if (files == null || destPath == null) { return; //nothing to copy } for (File file : files) { if (file.isDirectory()) { FileUtils.copyDirectory(file, destPath); } else { FileUtils.copyFileToDirectory(file, destPath); } } } }