| /* |
| * 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.ignite.spi.deployment.uri; |
| |
| import java.io.File; |
| import org.apache.ignite.compute.ComputeTask; |
| import org.apache.ignite.spi.IgniteSpiException; |
| |
| /** |
| * Class loader helper that could load class from the file using certain |
| * class loader. |
| */ |
| class GridUriDeploymentFileResourceLoader { |
| /** Class loader class should be loaded by. */ |
| private final ClassLoader clsLdr; |
| |
| /** Initial directory. */ |
| private final File scanPathDir; |
| |
| /** |
| * Creates new instance of loader helper. |
| * |
| * @param clsLdr Class loader class should be loaded by. |
| * @param scanPathDir Initial directory. |
| */ |
| GridUriDeploymentFileResourceLoader(ClassLoader clsLdr, File scanPathDir) { |
| this.clsLdr = clsLdr; |
| this.scanPathDir = scanPathDir; |
| } |
| |
| /** |
| * Creates new class from file with given file name. |
| * |
| * @param fileName Name of the class to be loaded. It might be either |
| * fully-qualified or just a class name. |
| * @param ignoreUnknownRsrc Whether unresolved classes should be |
| * ignored or not. |
| * @return Loaded class. |
| * @throws org.apache.ignite.spi.IgniteSpiException If class could not be loaded and |
| * {@code ignoreUnknownRsrc} parameter is {@code true}. |
| */ |
| @SuppressWarnings("unchecked") |
| Class<? extends ComputeTask<?, ?>> createResource(String fileName, boolean ignoreUnknownRsrc) throws IgniteSpiException { |
| if (scanPathDir.isDirectory()) |
| fileName = fileName.substring(scanPathDir.getAbsolutePath().length() + 1); |
| |
| if (fileName.endsWith(".class")) { |
| String str = fileName; |
| |
| // Replace separators. |
| str = str.replaceAll("\\/|\\\\", "."); |
| |
| // Strip off '.class' extension. |
| str = str.substring(0, str.indexOf(".class")); |
| |
| try { |
| return (Class<? extends ComputeTask<?, ?>>)clsLdr.loadClass(str); |
| } |
| catch (ClassNotFoundException e) { |
| if (ignoreUnknownRsrc) { |
| // No-op. |
| } |
| else |
| throw new IgniteSpiException("Failed to load class: " + str, e); |
| } |
| } |
| |
| // Not a class resource. |
| return null; |
| } |
| } |