001/* 002 * Copyright 2012-2017 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.boot.autoconfigure; 018 019import java.io.IOException; 020import java.util.List; 021 022import org.springframework.beans.factory.BeanClassLoaderAware; 023import org.springframework.context.annotation.Configuration; 024import org.springframework.core.io.support.SpringFactoriesLoader; 025import org.springframework.core.type.classreading.MetadataReader; 026import org.springframework.core.type.classreading.MetadataReaderFactory; 027import org.springframework.core.type.filter.TypeFilter; 028 029/** 030 * A {@link TypeFilter} implementation that matches registered auto-configuration classes. 031 * 032 * @author Stephane Nicoll 033 * @since 1.5.0 034 */ 035public class AutoConfigurationExcludeFilter implements TypeFilter, BeanClassLoaderAware { 036 037 private ClassLoader beanClassLoader; 038 039 private volatile List<String> autoConfigurations; 040 041 @Override 042 public void setBeanClassLoader(ClassLoader beanClassLoader) { 043 this.beanClassLoader = beanClassLoader; 044 } 045 046 @Override 047 public boolean match(MetadataReader metadataReader, 048 MetadataReaderFactory metadataReaderFactory) throws IOException { 049 return isConfiguration(metadataReader) && isAutoConfiguration(metadataReader); 050 } 051 052 private boolean isConfiguration(MetadataReader metadataReader) { 053 return metadataReader.getAnnotationMetadata() 054 .isAnnotated(Configuration.class.getName()); 055 } 056 057 private boolean isAutoConfiguration(MetadataReader metadataReader) { 058 return getAutoConfigurations() 059 .contains(metadataReader.getClassMetadata().getClassName()); 060 } 061 062 protected List<String> getAutoConfigurations() { 063 if (this.autoConfigurations == null) { 064 this.autoConfigurations = SpringFactoriesLoader.loadFactoryNames( 065 EnableAutoConfiguration.class, this.beanClassLoader); 066 } 067 return this.autoConfigurations; 068 } 069 070}