001/*
002 * Copyright 2012-2018 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.boot.autoconfigure.mongo;
018
019import java.util.stream.Collectors;
020
021import javax.annotation.PreDestroy;
022
023import com.mongodb.MongoClientSettings;
024import com.mongodb.connection.netty.NettyStreamFactoryFactory;
025import com.mongodb.reactivestreams.client.MongoClient;
026import io.netty.channel.socket.SocketChannel;
027import reactor.core.publisher.Flux;
028
029import org.springframework.beans.factory.ObjectProvider;
030import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
031import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
032import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
033import org.springframework.boot.context.properties.EnableConfigurationProperties;
034import org.springframework.context.annotation.Bean;
035import org.springframework.context.annotation.Configuration;
036import org.springframework.core.Ordered;
037import org.springframework.core.annotation.Order;
038import org.springframework.core.env.Environment;
039
040/**
041 * {@link EnableAutoConfiguration Auto-configuration} for Reactive Mongo.
042 *
043 * @author Mark Paluch
044 * @author Stephane Nicoll
045 * @since 2.0.0
046 */
047@Configuration
048@ConditionalOnClass({ MongoClient.class, Flux.class })
049@EnableConfigurationProperties(MongoProperties.class)
050public class MongoReactiveAutoConfiguration {
051
052        private final MongoClientSettings settings;
053
054        private MongoClient mongo;
055
056        public MongoReactiveAutoConfiguration(ObjectProvider<MongoClientSettings> settings) {
057                this.settings = settings.getIfAvailable();
058        }
059
060        @PreDestroy
061        public void close() {
062                if (this.mongo != null) {
063                        this.mongo.close();
064                }
065        }
066
067        @Bean
068        @ConditionalOnMissingBean
069        public MongoClient reactiveStreamsMongoClient(MongoProperties properties,
070                        Environment environment,
071                        ObjectProvider<MongoClientSettingsBuilderCustomizer> builderCustomizers) {
072                ReactiveMongoClientFactory factory = new ReactiveMongoClientFactory(properties,
073                                environment,
074                                builderCustomizers.orderedStream().collect(Collectors.toList()));
075                this.mongo = factory.createMongoClient(this.settings);
076                return this.mongo;
077        }
078
079        @Configuration
080        @ConditionalOnClass(SocketChannel.class)
081        static class NettyDriverConfiguration {
082
083                @Bean
084                @Order(Ordered.HIGHEST_PRECEDENCE)
085                public MongoClientSettingsBuilderCustomizer nettyDriverCustomizer(
086                                ObjectProvider<MongoClientSettings> settings) {
087                        return (builder) -> {
088                                if (!isStreamFactoryFactoryDefined(settings.getIfAvailable())) {
089                                        builder.streamFactoryFactory(
090                                                        NettyStreamFactoryFactory.builder().build());
091                                }
092                        };
093                }
094
095                private boolean isStreamFactoryFactoryDefined(MongoClientSettings settings) {
096                        return settings != null && settings.getStreamFactoryFactory() != null;
097                }
098
099        }
100
101}