| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| package org.apache.atlas.plugin.classloader; |
| |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.File; |
| import java.net.URI; |
| import java.net.URL; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| |
| /** |
| * AtlasPluginClassLoaderUtil used by AtlasPluginClassLoader. |
| */ |
| final class AtlasPluginClassLoaderUtil { |
| private static final Logger LOG = LoggerFactory.getLogger(AtlasPluginClassLoaderUtil.class); |
| |
| private static final String ATLAS_PLUGIN_LIBDIR = "atlas-%-plugin-impl"; |
| |
| private AtlasPluginClassLoaderUtil(){ } |
| |
| public static URL[] getFilesInDirectories(String[] libDirs) throws Exception { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("==> AtlasPluginClassLoaderUtil.getFilesInDirectories()"); |
| } |
| |
| List<URL> ret = new ArrayList<>(); |
| |
| for (String libDir : libDirs) { |
| getFilesInDirectory(libDir, ret); |
| } |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("<== AtlasPluginClassLoaderUtil.getFilesInDirectories(): {} files", ret.size()); |
| } |
| |
| return ret.toArray(new URL[]{}); |
| } |
| |
| private static void getFilesInDirectory(String dirPath, List<URL> files) { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("==> AtlasPluginClassLoaderUtil.getPluginFiles()"); |
| } |
| |
| if (dirPath != null) { |
| try { |
| File[] dirFiles = new File(dirPath).listFiles(); |
| |
| if (dirFiles != null) { |
| for (File dirFile : dirFiles) { |
| try { |
| URL jarPath = dirFile.toURI().toURL(); |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("getFilesInDirectory('{}'): adding {}", dirPath, dirFile.getAbsolutePath()); |
| } |
| |
| files.add(jarPath); |
| } catch (Exception excp) { |
| LOG.warn("getFilesInDirectory('{}'): failed to get URI for file {}", dirPath, dirFile |
| .getAbsolutePath(), excp); |
| } |
| } |
| } |
| } catch (Exception excp) { |
| LOG.warn("getFilesInDirectory('{}'): error", dirPath, excp); |
| } |
| } else { |
| LOG.warn("getFilesInDirectory('{}'): could not find directory in path {}", dirPath, dirPath); |
| } |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("<== AtlasPluginClassLoaderUtil.getFilesInDirectory({})", dirPath); |
| } |
| } |
| |
| public static String getPluginImplLibPath(String pluginType, Class<?> pluginClass) throws Exception { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("==> AtlasPluginClassLoaderUtil.getPluginImplLibPath for Class ({})", pluginClass.getName()); |
| } |
| |
| URI uri = pluginClass.getProtectionDomain().getCodeSource().getLocation().toURI(); |
| Path path = Paths.get(URI.create(uri.toString())); |
| String ret = path.getParent().toString() + File.separatorChar + ATLAS_PLUGIN_LIBDIR.replaceAll("%", pluginType); |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("<== AtlasPluginClassLoaderUtil.getPluginImplLibPath for Class {}): {})", pluginClass.getName(), ret); |
| } |
| |
| return ret; |
| } |
| } |