org.springframework.boot.devtools.autoconfigure.HateoasObjenesisCacheDisabler Maven / Gradle / Ivy
/*
* Copyright 2012-2015 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.devtools.autoconfigure;
import java.lang.reflect.Field;
import javax.annotation.PostConstruct;
import org.springframework.objenesis.ObjenesisStd;
import org.springframework.util.ClassUtils;
import org.springframework.util.ReflectionUtils;
/**
* Replaces the Objenesis instance in Spring HATEOAS's {@code DummyInvocationUtils} with
* one that does not perform any caching. The cache is problematic as it's keyed on class
* name which leads to {@code ClassCastExceptions} as the class loader changes across
* restarts.
*
* @author Andy Wilkinson
* @since 1.3.0
*/
class HateoasObjenesisCacheDisabler {
private static boolean cacheDisabled;
@PostConstruct
void disableCaching() {
if (!cacheDisabled) {
cacheDisabled = true;
doDisableCaching();
}
}
private void doDisableCaching() {
try {
Class type = ClassUtils.forName(
"org.springframework.hateoas.core.DummyInvocationUtils",
getClass().getClassLoader());
Field objenesis = ReflectionUtils.findField(type, "OBJENESIS");
if (objenesis != null) {
ReflectionUtils.makeAccessible(objenesis);
ReflectionUtils.setField(objenesis, null, new ObjenesisStd(false));
}
}
catch (Exception ex) {
// Assume that Spring HATEOAS is not on the classpath and continue
}
}
}