org.springframework.boot.autoconfigure.mongo.MongoClientFactory Maven / Gradle / Ivy
/*
* Copyright 2012-2018 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.Collections;
import java.util.List;
import com.mongodb.MongoClient;
import com.mongodb.MongoClientOptions;
import com.mongodb.MongoClientOptions.Builder;
import com.mongodb.MongoClientURI;
import com.mongodb.MongoCredential;
import com.mongodb.ServerAddress;
import org.springframework.core.env.Environment;
/**
* A factory for a blocking {@link MongoClient} that applies {@link MongoProperties}.
*
* @author Dave Syer
* @author Phillip Webb
* @author Josh Long
* @author Andy Wilkinson
* @author Eddú Meléndez
* @author Stephane Nicoll
* @author Nasko Vasilev
* @author Mark Paluch
* @since 2.0.0
*/
public class MongoClientFactory {
private final MongoProperties properties;
private final Environment environment;
public MongoClientFactory(MongoProperties properties, Environment environment) {
this.properties = properties;
this.environment = environment;
}
/**
* Creates a {@link MongoClient} using the given {@code options}. If the environment
* contains a {@code local.mongo.port} property, it is used to configure a client to
* an embedded MongoDB instance.
* @param options the options
* @return the Mongo client
*/
public MongoClient createMongoClient(MongoClientOptions options) {
Integer embeddedPort = getEmbeddedPort();
if (embeddedPort != null) {
return createEmbeddedMongoClient(options, embeddedPort);
}
return createNetworkMongoClient(options);
}
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(MongoClientOptions options, int port) {
if (options == null) {
options = MongoClientOptions.builder().build();
}
String host = (this.properties.getHost() != null ? this.properties.getHost()
: "localhost");
return new MongoClient(Collections.singletonList(new ServerAddress(host, port)),
options);
}
private MongoClient createNetworkMongoClient(MongoClientOptions options) {
MongoProperties properties = this.properties;
if (properties.getUri() != null) {
return createMongoClient(properties.getUri(), options);
}
if (hasCustomAddress() || hasCustomCredentials()) {
if (options == null) {
options = MongoClientOptions.builder().build();
}
MongoCredential credentials = getCredentials(properties);
String host = getValue(properties.getHost(), "localhost");
int port = getValue(properties.getPort(), MongoProperties.DEFAULT_PORT);
List seeds = Collections
.singletonList(new ServerAddress(host, port));
return (credentials != null ? new MongoClient(seeds, credentials, options)
: new MongoClient(seeds, options));
}
return createMongoClient(MongoProperties.DEFAULT_URI, options);
}
private MongoClient createMongoClient(String uri, MongoClientOptions options) {
return new MongoClient(new MongoClientURI(uri, builder(options)));
}
private T getValue(T value, T fallback) {
return (value != null ? value : fallback);
}
private boolean hasCustomAddress() {
return this.properties.getHost() != null || this.properties.getPort() != null;
}
private MongoCredential getCredentials(MongoProperties properties) {
if (!hasCustomCredentials()) {
return null;
}
String username = properties.getUsername();
String database = getValue(properties.getAuthenticationDatabase(),
properties.getMongoClientDatabase());
char[] password = properties.getPassword();
return MongoCredential.createCredential(username, database, password);
}
private boolean hasCustomCredentials() {
return this.properties.getUsername() != null
&& this.properties.getPassword() != null;
}
private Builder builder(MongoClientOptions options) {
if (options != null) {
return MongoClientOptions.builder(options);
}
return MongoClientOptions.builder();
}
}