/*
*
* * 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
* *
* * 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.authentication;
import java.util.Collection;
import java.util.Map;
import java.util.function.Function;
import java.util.stream.Collectors;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.util.Assert;
import reactor.core.publisher.Mono;
/**
*
* @author Rob Winch
* @since 5.0
*/
public class MapUserDetailsRepository implements UserDetailsRepository {
private final Map<String,UserDetails> users;
public MapUserDetailsRepository(Collection<UserDetails> users) {
Assert.notEmpty(users, "users cannot be null or empty");
this.users = users.stream().collect(Collectors.toMap( u -> getKey(u.getName()), Function.identity()));
}
@Override
public Mono<UserDetails> findByUsername(String username) {
String key = getKey(username);
UserDetails result = users.get(key);
return result == null ? Mono.empty() : Mono.just(User.withUserDetails(result).build());
}
private String getKey(String username) {
return username.toLowerCase();
}
}