/*
* Copyright 2012-2017 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.boot.autoconfigure.mongo;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import com.mongodb.ConnectionString;
import com.mongodb.MongoCredential;
import com.mongodb.ServerAddress;
import com.mongodb.async.client.MongoClientSettings;
import com.mongodb.async.client.MongoClientSettings.Builder;
import com.mongodb.connection.ClusterSettings;
import com.mongodb.connection.ConnectionPoolSettings;
import com.mongodb.connection.ServerSettings;
import com.mongodb.connection.SocketSettings;
import com.mongodb.connection.SslSettings;
import com.mongodb.reactivestreams.client.MongoClient;
import com.mongodb.reactivestreams.client.MongoClients;
import org.springframework.core.env.Environment;
/**
* 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;
public ReactiveMongoClientFactory(MongoProperties properties,
Environment environment) {
this.properties = properties;
this.environment = environment;
}
/**
* 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 ? "localhost"
: this.properties.getHost();
ClusterSettings clusterSettings = ClusterSettings.builder()
.hosts(Collections.singletonList(new ServerAddress(host, port))).build();
builder.clusterSettings(clusterSettings);
return MongoClients.create(builder.build());
}
private MongoClient createNetworkMongoClient(MongoClientSettings settings) {
if (hasCustomAddress() || hasCustomCredentials()) {
if (this.properties.getUri() != null) {
throw new IllegalStateException("Invalid mongo configuration, "
+ "either uri or host/port/credentials must be specified");
}
Builder builder = builder(settings);
if (hasCustomCredentials()) {
List<MongoCredential> credentials = new ArrayList<>();
String database = this.properties.getAuthenticationDatabase() == null
? this.properties.getMongoClientDatabase()
: this.properties.getAuthenticationDatabase();
credentials.add(
MongoCredential.createCredential(this.properties.getUsername(),
database, this.properties.getPassword()));
builder.credentialList(credentials);
}
String host = this.properties.getHost() == null ? "localhost"
: this.properties.getHost();
int port = this.properties.getPort() != null ? this.properties.getPort()
: MongoProperties.DEFAULT_PORT;
ClusterSettings clusterSettings = ClusterSettings.builder()
.hosts(Collections.singletonList(new ServerAddress(host, port)))
.build();
builder.clusterSettings(clusterSettings);
return MongoClients.create(builder.build());
}
ConnectionString connectionString = new ConnectionString(
this.properties.determineUri());
return MongoClients.create(createBuilder(settings, connectionString).build());
}
private Builder createBuilder(MongoClientSettings settings,
ConnectionString connectionString) {
Builder builder = builder(settings)
.clusterSettings(ClusterSettings.builder()
.applyConnectionString(connectionString).build())
.connectionPoolSettings(ConnectionPoolSettings.builder()
.applyConnectionString(connectionString).build())
.serverSettings(ServerSettings.builder()
.applyConnectionString(connectionString).build())
.credentialList(connectionString.getCredentialList())
.sslSettings(SslSettings.builder().applyConnectionString(connectionString)
.build())
.socketSettings(SocketSettings.builder()
.applyConnectionString(connectionString).build());
if (connectionString.getReadPreference() != null) {
builder.readPreference(connectionString.getReadPreference());
}
if (connectionString.getReadConcern() != null) {
builder.readConcern(connectionString.getReadConcern());
}
if (connectionString.getWriteConcern() != null) {
builder.writeConcern(connectionString.getWriteConcern());
}
if (connectionString.getApplicationName() != null) {
builder.applicationName(connectionString.getApplicationName());
}
return 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);
}
}