spring security SecurityContextHolderStrategy 源码
spring security SecurityContextHolderStrategy 代码
文件路径：/core/src/main/java/org/springframework/security/core/context/SecurityContextHolderStrategy.java
/*
* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
*
* 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.core.context;
import java.util.function.Supplier;
/**
* A strategy for storing security context information against a thread.
*
* <p>
* The preferred strategy is loaded by {@link SecurityContextHolder}.
*
* @author Ben Alex
* @author Rob Winch
*/
public interface SecurityContextHolderStrategy {
/**
* Clears the current context.
*/
void clearContext();
/**
* Obtains the current context.
* @return a context (never <code>null</code> - create a default implementation if
* necessary)
*/
SecurityContext getContext();
/**
* Obtains a {@link Supplier} that returns the current context.
* @return a {@link Supplier} that returns the current context (never
* <code>null</code> - create a default implementation if necessary)
* @since 5.8
*/
default Supplier<SecurityContext> getDeferredContext() {
return () -> getContext();
}
/**
* Sets the current context.
* @param context to the new argument (should never be <code>null</code>, although
* implementations must check if <code>null</code> has been passed and throw an
* <code>IllegalArgumentException</code> in such cases)
*/
void setContext(SecurityContext context);
/**
* Sets a {@link Supplier} that will return the current context. Implementations can
* override the default to avoid invoking {@link Supplier#get()}.
* @param deferredContext a {@link Supplier} that returns the {@link SecurityContext}
* @since 5.8
*/
default void setDeferredContext(Supplier<SecurityContext> deferredContext) {
setContext(deferredContext.get());
}
/**
* Creates a new, empty context implementation, for use by
* <tt>SecurityContextRepository</tt> implementations, when creating a new context for
* the first time.
* @return the empty context.
*/
SecurityContext createEmptyContext();
}
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