content: /**
   * 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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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.URISyntaxException;
  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) {
          LOG.debug("==> AtlasPluginClassLoaderUtil.getFilesInDirectories()");
  
          List<URL> ret = new ArrayList<>();
  
          for (String libDir : libDirs) {
              getFilesInDirectory(libDir, ret);
          }
  
          LOG.debug("<== AtlasPluginClassLoaderUtil.getFilesInDirectories(): {} files", ret.size());
  
          return ret.toArray(new URL[] {});
      }
  
      public static String[] getPluginImplLibPath(String pluginType, Class<?> pluginClass) throws URISyntaxException {
          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);
  
          LOG.debug("<== AtlasPluginClassLoaderUtil.getPluginImplLibPath for Class {}): {})", pluginClass.getName(), ret);
  
          return new String[] {ret};
      }
  
      private static void getFilesInDirectory(String dirPath, List<URL> files) {
          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();
  
                              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);
          }
  
          LOG.debug("<== AtlasPluginClassLoaderUtil.getFilesInDirectory({})", dirPath);
      }
  }
  