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[MSHARED-817] Change eclipse aether dependency scope to provided
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104 changes: 104 additions & 0 deletions
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src/main/java/org/apache/maven/shared/transfer/project/MavenAetherUtils.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| package org.apache.maven.shared.transfer.project; | ||
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| /* | ||
| * 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. | ||
| */ | ||
|
|
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| import org.apache.maven.plugin.MojoExecutionException; | ||
| import org.codehaus.plexus.classworlds.realm.ClassRealm; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
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| /** | ||
| * This util class will import the Aether library available from the installed Maven distribution. It will do nothing if | ||
| * it is called from outside of a ClassRealm. | ||
| * | ||
| * @since 0.11.1 | ||
| * @author Gabriel Belingueres <a href="mailto:belingueres@gmail.com">belingueres@gmail.com</a> | ||
| */ | ||
| public class MavenAetherUtils | ||
| { | ||
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| private static final Logger LOGGER = LoggerFactory.getLogger( MavenAetherUtils.class ); | ||
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| private static final String NO_SUCH_REALM_EXCEPTION = "org.codehaus.plexus.classworlds.realm.NoSuchRealmException"; | ||
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| /** | ||
| * Import the core Aether library from the maven distribution. | ||
| * | ||
| * @param pluginDescriptor the plugin descriptor where the operation will be executed. | ||
| * @throws MojoExecutionException if there is an error when importing the library. | ||
| */ | ||
| public static void importAetherLibrary() | ||
| { | ||
| ClassLoader classLoader = Thread.currentThread().getContextClassLoader(); | ||
| if ( isClassRealm( classLoader ) ) | ||
| { | ||
| importAether( classLoader ); | ||
| } | ||
| } | ||
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| /** | ||
| * Imports aether-util library from the user's Maven distribution. | ||
| * <p> | ||
| * PRECONDITION: the classLoader parameter is an instance of ClassRealm. | ||
| * </p> | ||
| * | ||
| * @param classLoader the Classloader which needs to access aether-util. | ||
| */ | ||
| private static void importAether( ClassLoader classLoader ) | ||
| { | ||
| ClassRealm classRealm = (ClassRealm) classLoader; | ||
| try | ||
| { | ||
| classRealm.importFrom( "plexus.core", "org.eclipse.aether.util" ); | ||
| } | ||
| catch ( Exception e ) | ||
| { | ||
| if ( NO_SUCH_REALM_EXCEPTION.equals( e.getClass().getCanonicalName() ) ) | ||
| { | ||
| LOGGER.info( "'plexus.core' ClassRealm could not be found. " | ||
| + "Ignore this message if you are using the library outside of a Maven execution.", e ); | ||
| } | ||
| else | ||
| { | ||
| // another exception | ||
| LOGGER.error( "Unexpected exception when importing Aether library to the '{}' ClassRealm", classLoader, | ||
| e ); | ||
| } | ||
| } | ||
| } | ||
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| /** | ||
| * Using reflection, check if the Classloader is actually an instance of a ClassRealm. | ||
| * | ||
| * @param classLoader the Classloader to test. | ||
| * @return true if it an instance of ClassRealm; false otherwise. | ||
| */ | ||
| private static boolean isClassRealm( ClassLoader classLoader ) | ||
| { | ||
| for ( Class<?> clazz = classLoader.getClass(); clazz != null; clazz = clazz.getSuperclass() ) | ||
| { | ||
| if ( "org.codehaus.plexus.classworlds.realm.ClassRealm".equals( clazz.getCanonicalName() ) ) | ||
| { | ||
| return true; | ||
| } | ||
| } | ||
| return false; | ||
| } | ||
| } |
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