org.springframework.boot.autoconfigure.mongo.ReactiveMongoClientFactory Maven / Gradle / Ivy
/*
* Copyright 2012-2019 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.Collections;
import java.util.List;
import com.mongodb.ConnectionString;
import com.mongodb.MongoClientSettings;
import com.mongodb.MongoClientSettings.Builder;
import com.mongodb.MongoCredential;
import com.mongodb.ServerAddress;
import com.mongodb.reactivestreams.client.MongoClient;
import com.mongodb.reactivestreams.client.MongoClients;
import org.springframework.core.env.Environment;
import org.springframework.util.Assert;
/**
* A factory for a reactive {@link MongoClient} that applies {@link MongoProperties}.
*
* @author Mark Paluch
* @author Stephane Nicoll
* @since 2.0.0
*/
public class ReactiveMongoClientFactory {
private final MongoProperties properties;
private final Environment environment;
private final List builderCustomizers;
public ReactiveMongoClientFactory(MongoProperties properties, Environment environment,
List builderCustomizers) {
this.properties = properties;
this.environment = environment;
this.builderCustomizers = (builderCustomizers != null) ? builderCustomizers : Collections.emptyList();
}
/**
* Creates a {@link MongoClient} using the given {@code settings}. If the environment
* contains a {@code local.mongo.port} property, it is used to configure a client to
* an embedded MongoDB instance.
* @param settings the settings
* @return the Mongo client
*/
public MongoClient createMongoClient(MongoClientSettings settings) {
Integer embeddedPort = getEmbeddedPort();
if (embeddedPort != null) {
return createEmbeddedMongoClient(settings, embeddedPort);
}
return createNetworkMongoClient(settings);
}
private Integer getEmbeddedPort() {
if (this.environment != null) {
String localPort = this.environment.getProperty("local.mongo.port");
if (localPort != null) {
return Integer.valueOf(localPort);
}
}
return null;
}
private MongoClient createEmbeddedMongoClient(MongoClientSettings settings, int port) {
Builder builder = builder(settings);
String host = (this.properties.getHost() != null) ? this.properties.getHost() : "localhost";
builder.applyToClusterSettings(
(cluster) -> cluster.hosts(Collections.singletonList(new ServerAddress(host, port))));
return createMongoClient(builder);
}
private MongoClient createNetworkMongoClient(MongoClientSettings settings) {
if (hasCustomAddress() || hasCustomCredentials()) {
return createCredentialNetworkMongoClient(settings);
}
ConnectionString connectionString = new ConnectionString(this.properties.determineUri());
return createMongoClient(createBuilder(settings, connectionString));
}
private MongoClient createCredentialNetworkMongoClient(MongoClientSettings settings) {
Assert.state(this.properties.getUri() == null,
"Invalid mongo configuration, either uri or host/port/credentials must be specified");
Builder builder = builder(settings);
if (hasCustomCredentials()) {
applyCredentials(builder);
}
String host = getOrDefault(this.properties.getHost(), "localhost");
int port = getOrDefault(this.properties.getPort(), MongoProperties.DEFAULT_PORT);
ServerAddress serverAddress = new ServerAddress(host, port);
builder.applyToClusterSettings((cluster) -> cluster.hosts(Collections.singletonList(serverAddress)));
return createMongoClient(builder);
}
private void applyCredentials(Builder builder) {
String database = (this.properties.getAuthenticationDatabase() != null)
? this.properties.getAuthenticationDatabase() : this.properties.getMongoClientDatabase();
builder.credential((MongoCredential.createCredential(this.properties.getUsername(), database,
this.properties.getPassword())));
}
private T getOrDefault(T value, T defaultValue) {
return (value != null) ? value : defaultValue;
}
private MongoClient createMongoClient(Builder builder) {
customize(builder);
return MongoClients.create(builder.build());
}
private Builder createBuilder(MongoClientSettings settings, ConnectionString connection) {
return builder(settings).applyConnectionString(connection);
}
private void customize(MongoClientSettings.Builder builder) {
for (MongoClientSettingsBuilderCustomizer customizer : this.builderCustomizers) {
customizer.customize(builder);
}
}
private boolean hasCustomAddress() {
return this.properties.getHost() != null || this.properties.getPort() != null;
}
private boolean hasCustomCredentials() {
return this.properties.getUsername() != null && this.properties.getPassword() != null;
}
private Builder builder(MongoClientSettings settings) {
if (settings == null) {
return MongoClientSettings.builder();
}
return MongoClientSettings.builder(settings);
}
}