spring-graphql PrincipalMethodArgumentResolver 源码
spring-graphql PrincipalMethodArgumentResolver 代码
文件路径：/spring-graphql/src/main/java/org/springframework/graphql/data/method/annotation/support/PrincipalMethodArgumentResolver.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.graphql.data.method.annotation.support;
import java.security.Principal;
import graphql.schema.DataFetchingEnvironment;
import org.springframework.core.MethodParameter;
import org.springframework.graphql.data.method.HandlerMethodArgumentResolver;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.ReactiveSecurityContextHolder;
import org.springframework.security.core.context.SecurityContext;
import org.springframework.security.core.context.SecurityContextHolder;
/**
* Resolver to obtain {@link Principal} from Spring Security context via
* {@link SecurityContext#getAuthentication()}.
*
* <p>The resolver checks both ThreadLocal context via {@link SecurityContextHolder}
* for Spring MVC applications, and {@link ReactiveSecurityContextHolder} for
* Spring WebFlux applications. It returns .
*
* @author Rossen Stoyanchev
* @since 1.0.0
*/
public class PrincipalMethodArgumentResolver implements HandlerMethodArgumentResolver {
/**
* Return "true" if the argument is {@link Principal} or a sub-type.
*/
@Override
public boolean supportsParameter(MethodParameter parameter) {
return Principal.class.isAssignableFrom(parameter.getParameterType());
}
@Override
public Object resolveArgument(MethodParameter parameter, DataFetchingEnvironment environment) {
return doResolve();
}
static Object doResolve() {
Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
return (authentication != null ? authentication :
ReactiveSecurityContextHolder.getContext().map(SecurityContext::getAuthentication));
}
}
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