/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.jackrabbit.oak.plugins.mongomk.util;
import com.google.common.base.Objects;
import com.mongodb.DB;
import com.mongodb.MongoClient;
import com.mongodb.MongoClientOptions;
import com.mongodb.ServerAddress;
/**
* The {@code MongoConnection} abstracts connection to the {@code MongoDB}.
*/
public class MongoConnection {
private final DB db;
private final MongoClient mongo;
/**
* Constructs a new {@code MongoConnection}.
*
* @param host The host address.
* @param port The port.
* @param database The database name.
* @throws Exception If an error occurred while trying to connect.
*/
public MongoConnection(String host, int port, String database) throws Exception {
MongoClientOptions options = getDefaultBuilder().build();
ServerAddress serverAddress = new ServerAddress(host, port);
mongo = new MongoClient(serverAddress, options);
db = mongo.getDB(database);
}
/**
* Returns the {@link DB}.
*
* @return The {@link DB}.
*/
public DB getDB() {
return db;
}
/**
* Closes the underlying Mongo instance
*/
public void close() {
mongo.close();
}
//--------------------------------------< Utility Methods >
/**
* Constructs a builder with default options set. These can be overridden later
*
* @return builder with default options set
*/
public static MongoClientOptions.Builder getDefaultBuilder() {
return new MongoClientOptions.Builder()
.description("MongoConnection for Oak MongoMK")
.threadsAllowedToBlockForConnectionMultiplier(100);
}
public static String toString(MongoClientOptions opts) {
return Objects.toStringHelper(opts)
.add("connectionsPerHost", opts.getConnectionsPerHost())
.add("connectTimeout", opts.getConnectTimeout())
.add("socketTimeout", opts.getSocketTimeout())
.add("socketKeepAlive", opts.isSocketKeepAlive())
.add("autoConnectRetry", opts.isAutoConnectRetry())
.add("maxAutoConnectRetryTime", opts.getMaxAutoConnectRetryTime())
.add("maxWaitTime", opts.getMaxWaitTime())
.add("threadsAllowedToBlockForConnectionMultiplier",
opts.getThreadsAllowedToBlockForConnectionMultiplier())
.add("readPreference", opts.getReadPreference().getName())
.add("writeConcern", opts.getWriteConcern())
.toString();
}
}