/*
* Copyright 2012-2017 the original author or authors.
*
* Licensed 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.springframework.boot.test.autoconfigure.filter;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.Set;
import org.springframework.boot.context.TypeExcludeFilter;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.core.type.classreading.MetadataReader;
import org.springframework.core.type.classreading.MetadataReaderFactory;
import org.springframework.test.context.ContextCustomizer;
import org.springframework.test.context.MergedContextConfiguration;
import org.springframework.util.ReflectionUtils;
/**
* {@link ContextCustomizer} to support {@link TypeExcludeFilters @TypeExcludeFilters}.
*
* @author Phillip Webb
* @see TypeExcludeFilters
*/
class TypeExcludeFiltersContextCustomizer implements ContextCustomizer {
private static final String EXCLUDE_FILTER_BEAN_NAME = TypeExcludeFilters.class
.getName();
private final Set<TypeExcludeFilter> filters;
TypeExcludeFiltersContextCustomizer(Class<?> testClass,
Set<Class<? extends TypeExcludeFilter>> filterClasses) {
this.filters = instantiateTypeExcludeFilters(testClass, filterClasses);
}
private Set<TypeExcludeFilter> instantiateTypeExcludeFilters(Class<?> testClass,
Set<Class<? extends TypeExcludeFilter>> filterClasses) {
Set<TypeExcludeFilter> filters = new LinkedHashSet<>();
for (Class<? extends TypeExcludeFilter> filterClass : filterClasses) {
filters.add(instantiateTypeExcludeFilter(testClass, filterClass));
}
return Collections.unmodifiableSet(filters);
}
private TypeExcludeFilter instantiateTypeExcludeFilter(Class<?> testClass,
Class<?> filterClass) {
try {
Constructor<?> constructor = getTypeExcludeFilterConstructor(filterClass);
ReflectionUtils.makeAccessible(constructor);
if (constructor.getParameterTypes().length == 1) {
return (TypeExcludeFilter) constructor.newInstance(testClass);
}
return (TypeExcludeFilter) constructor.newInstance();
}
catch (Exception ex) {
throw new IllegalStateException("Unable to create filter for " + filterClass,
ex);
}
}
@Override
public int hashCode() {
return this.filters.hashCode();
}
@Override
public boolean equals(Object obj) {
return (obj != null && getClass().equals(obj.getClass()) && this.filters
.equals(((TypeExcludeFiltersContextCustomizer) obj).filters));
}
@Override
public void customizeContext(ConfigurableApplicationContext context,
MergedContextConfiguration mergedContextConfiguration) {
if (!this.filters.isEmpty()) {
context.getBeanFactory().registerSingleton(EXCLUDE_FILTER_BEAN_NAME,
createDelegatingTypeExcludeFilter());
}
}
private TypeExcludeFilter createDelegatingTypeExcludeFilter() {
return new TypeExcludeFilter() {
@Override
public boolean match(MetadataReader metadataReader,
MetadataReaderFactory metadataReaderFactory) throws IOException {
for (TypeExcludeFilter filter : TypeExcludeFiltersContextCustomizer.this.filters) {
if (filter.match(metadataReader, metadataReaderFactory)) {
return true;
}
}
return false;
}
};
}
private Constructor<?> getTypeExcludeFilterConstructor(Class<?> type)
throws NoSuchMethodException {
try {
return type.getDeclaredConstructor(Class.class);
}
catch (Exception ex) {
return type.getDeclaredConstructor();
}
}
}