org.springframework.boot.autoconfigure.mongo.MongoReactiveAutoConfiguration Maven / Gradle / Ivy
/*
* Copyright 2012-2020 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.boot.autoconfigure.mongo;
import java.util.stream.Collectors;
import com.mongodb.MongoClientSettings;
import com.mongodb.MongoClientSettings.Builder;
import com.mongodb.connection.netty.NettyStreamFactoryFactory;
import com.mongodb.reactivestreams.client.MongoClient;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import reactor.core.publisher.Flux;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.ObjectProvider;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;
import org.springframework.core.env.Environment;
/**
* {@link EnableAutoConfiguration Auto-configuration} for Reactive Mongo.
*
* @author Mark Paluch
* @author Stephane Nicoll
* @author Scott Frederick
* @since 2.0.0
*/
@Configuration(proxyBeanMethods = false)
@ConditionalOnClass({ MongoClient.class, Flux.class })
@EnableConfigurationProperties(MongoProperties.class)
public class MongoReactiveAutoConfiguration {
@Bean
@ConditionalOnMissingBean
public MongoClient reactiveStreamsMongoClient(
ObjectProvider builderCustomizers, MongoClientSettings settings) {
ReactiveMongoClientFactory factory = new ReactiveMongoClientFactory(
builderCustomizers.orderedStream().collect(Collectors.toList()));
return factory.createMongoClient(settings);
}
@Configuration(proxyBeanMethods = false)
@ConditionalOnMissingBean(MongoClientSettings.class)
static class MongoClientSettingsConfiguration {
@Bean
MongoClientSettings mongoClientSettings() {
return MongoClientSettings.builder().build();
}
@Bean
MongoPropertiesClientSettingsBuilderCustomizer mongoPropertiesCustomizer(MongoProperties properties,
Environment environment) {
return new MongoPropertiesClientSettingsBuilderCustomizer(properties, environment);
}
}
@Configuration(proxyBeanMethods = false)
@ConditionalOnClass({ SocketChannel.class, NioEventLoopGroup.class })
static class NettyDriverConfiguration {
@Bean
@Order(Ordered.HIGHEST_PRECEDENCE)
NettyDriverMongoClientSettingsBuilderCustomizer nettyDriverCustomizer(
ObjectProvider settings) {
return new NettyDriverMongoClientSettingsBuilderCustomizer(settings);
}
}
/**
* {@link MongoClientSettingsBuilderCustomizer} to apply Mongo client settings.
*/
private static final class NettyDriverMongoClientSettingsBuilderCustomizer
implements MongoClientSettingsBuilderCustomizer, DisposableBean {
private final ObjectProvider settings;
private volatile EventLoopGroup eventLoopGroup;
private NettyDriverMongoClientSettingsBuilderCustomizer(ObjectProvider settings) {
this.settings = settings;
}
@Override
public void customize(Builder builder) {
if (!isStreamFactoryFactoryDefined(this.settings.getIfAvailable())) {
NioEventLoopGroup eventLoopGroup = new NioEventLoopGroup();
this.eventLoopGroup = eventLoopGroup;
builder.streamFactoryFactory(
NettyStreamFactoryFactory.builder().eventLoopGroup(eventLoopGroup).build());
}
}
@Override
public void destroy() {
EventLoopGroup eventLoopGroup = this.eventLoopGroup;
if (eventLoopGroup != null) {
eventLoopGroup.shutdownGracefully().awaitUninterruptibly();
this.eventLoopGroup = null;
}
}
private boolean isStreamFactoryFactoryDefined(MongoClientSettings settings) {
return settings != null && settings.getStreamFactoryFactory() != null;
}
}
}