org.springframework.security.oauth2.client.userinfo.DelegatingOAuth2UserService Maven / Gradle / Ivy
/*
* Copyright 2002-2017 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.oauth2.client.userinfo;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Objects;
import org.springframework.security.oauth2.core.OAuth2AuthenticationException;
import org.springframework.security.oauth2.core.user.OAuth2User;
import org.springframework.util.Assert;
/**
* An implementation of an {@link OAuth2UserService} that simply delegates to it's
* internal {@code List} of {@link OAuth2UserService}(s).
*
* Each {@link OAuth2UserService} is given a chance to
* {@link OAuth2UserService#loadUser(OAuth2UserRequest) load} an {@link OAuth2User} with
* the first {@code non-null} {@link OAuth2User} being returned.
*
* @param The type of OAuth 2.0 User Request
* @param The type of OAuth 2.0 User
* @author Joe Grandja
* @since 5.0
* @see OAuth2UserService
* @see OAuth2UserRequest
* @see OAuth2User
*/
public class DelegatingOAuth2UserService
implements OAuth2UserService {
private final List> userServices;
/**
* Constructs a {@code DelegatingOAuth2UserService} using the provided parameters.
* @param userServices a {@code List} of {@link OAuth2UserService}(s)
*/
public DelegatingOAuth2UserService(List> userServices) {
Assert.notEmpty(userServices, "userServices cannot be empty");
this.userServices = Collections.unmodifiableList(new ArrayList<>(userServices));
}
@Override
public U loadUser(R userRequest) throws OAuth2AuthenticationException {
Assert.notNull(userRequest, "userRequest cannot be null");
// @formatter:off
return this.userServices.stream()
.map((userService) -> userService.loadUser(userRequest))
.filter(Objects::nonNull)
.findFirst()
.orElse(null);
// @formatter:on
}
}