spring security AbstractAuthorizationManagerRegistry 源码
spring security AbstractAuthorizationManagerRegistry 代码
文件路径：/core/src/main/java/org/springframework/security/authorization/method/AbstractAuthorizationManagerRegistry.java
/*
* Copyright 2002-2021 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
*
* https://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.security.authorization.method;
import java.lang.reflect.Method;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.aopalliance.intercept.MethodInvocation;
import org.springframework.core.MethodClassKey;
import org.springframework.lang.NonNull;
import org.springframework.security.authorization.AuthorizationManager;
/**
* For internal use only, as this contract is likely to change
*
* @author Evgeniy Cheban
*/
abstract class AbstractAuthorizationManagerRegistry {
static final AuthorizationManager<MethodInvocation> NULL_MANAGER = (a, o) -> null;
private final Map<MethodClassKey, AuthorizationManager<MethodInvocation>> cachedManagers = new ConcurrentHashMap<>();
/**
* Returns an {@link AuthorizationManager} for the {@link MethodInvocation}.
* @param methodInvocation the {@link MethodInvocation} to use
* @return an {@link AuthorizationManager} to use
*/
final AuthorizationManager<MethodInvocation> getManager(MethodInvocation methodInvocation) {
Method method = methodInvocation.getMethod();
Object target = methodInvocation.getThis();
Class<?> targetClass = (target != null) ? target.getClass() : null;
MethodClassKey cacheKey = new MethodClassKey(method, targetClass);
return this.cachedManagers.computeIfAbsent(cacheKey, (k) -> resolveManager(method, targetClass));
}
/**
* Subclasses should implement this method to provide the non-null
* {@link AuthorizationManager} for the method and the target class.
* @param method the method
* @param targetClass the target class
* @return the non-null {@link AuthorizationManager}
*/
@NonNull
abstract AuthorizationManager<MethodInvocation> resolveManager(Method method, Class<?> targetClass);
}
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