com.b2international.snowowl.identity.MultiIdentityProvider.java Source code

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Here is the source code for com.b2international.snowowl.identity.MultiIdentityProvider.java

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/*
 * Copyright 2017 B2i Healthcare Pte Ltd, http://b2i.sg
 * 
 * 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 com.b2international.snowowl.identity;

import java.util.Collection;
import java.util.List;
import java.util.stream.Collectors;

import com.b2international.snowowl.core.events.util.Promise;
import com.b2international.snowowl.identity.domain.User;
import com.b2international.snowowl.identity.domain.Users;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Iterables;

/**
 * @since 5.11
 */
final class MultiIdentityProvider implements IdentityProvider, IdentityWriter {

    private final List<IdentityProvider> providers;

    public MultiIdentityProvider(List<IdentityProvider> providers) {
        this.providers = providers;
    }

    @Override
    public void addUser(String username, String password) {
        // add the user to the first internal identity provider
        providers.stream().filter(IdentityWriter.class::isInstance).map(IdentityWriter.class::cast).findFirst()
                .ifPresent(provider -> provider.addUser(username, password));
    }

    @Override
    public boolean auth(String username, String token) {
        for (IdentityProvider identityProvider : providers) {
            if (identityProvider.auth(username, token)) {
                return true;
            }
        }
        return false;
    }

    @Override
    public Promise<Users> searchUsers(Collection<String> usernames, int limit) {
        return Promise.all(providers.stream().map(provider -> provider.searchUsers(usernames, limit))
                .collect(Collectors.toList())).then(responses -> {
                    final ImmutableList.Builder<User> users = ImmutableList.builder();
                    int total = 0;
                    for (Users matches : Iterables.filter(responses, Users.class)) {
                        users.addAll(matches);
                        total += matches.getTotal();
                    }
                    return new Users(users.build(), limit, total);
                });
    }

    @Override
    public String getInfo() {
        return String.format("multi[%s]",
                providers.stream().map(IdentityProvider::getInfo).collect(Collectors.joining(",")));
    }

}