org.springframework.security.web.reactive.result.method.annotation.AuthenticationPrincipalArgumentResolver Maven / Gradle / Ivy

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/*
 * Copyright 2002-2018 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.security.web.reactive.result.method.annotation;

import java.lang.annotation.Annotation;

import org.reactivestreams.Publisher;
import org.springframework.core.MethodParameter;
import org.springframework.core.ReactiveAdapter;
import org.springframework.core.ReactiveAdapterRegistry;
import org.springframework.core.ResolvableType;
import org.springframework.core.annotation.AnnotationUtils;
import org.springframework.expression.BeanResolver;
import org.springframework.expression.Expression;
import org.springframework.expression.ExpressionParser;
import org.springframework.expression.spel.standard.SpelExpressionParser;
import org.springframework.expression.spel.support.StandardEvaluationContext;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.annotation.AuthenticationPrincipal;
import org.springframework.util.StringUtils;
import org.springframework.web.reactive.BindingContext;
import org.springframework.web.reactive.result.method.HandlerMethodArgumentResolverSupport;
import org.springframework.web.server.ServerWebExchange;

import reactor.core.publisher.Mono;

/**
 * Resolves the Authentication
 * @author Rob Winch
 * @since 5.0
 */
public class AuthenticationPrincipalArgumentResolver extends HandlerMethodArgumentResolverSupport {

	private ExpressionParser parser = new SpelExpressionParser();

	private BeanResolver beanResolver;

	public AuthenticationPrincipalArgumentResolver(ReactiveAdapterRegistry adapterRegistry) {
		super(adapterRegistry);
	}

	/**
	 * Sets the {@link BeanResolver} to be used on the expressions
	 * @param beanResolver the {@link BeanResolver} to use
	 */
	public void setBeanResolver(BeanResolver beanResolver) {
		this.beanResolver = beanResolver;
	}

	@Override
	public boolean supportsParameter(MethodParameter parameter) {
		return findMethodAnnotation(AuthenticationPrincipal.class, parameter) != null;
	}

	@Override
	public Mono