uk.ac.ebi.eva.utils.ConnectionHelper.java Source code

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Here is the source code for uk.ac.ebi.eva.utils.ConnectionHelper.java

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/*
 * Copyright 2016 EMBL - European Bioinformatics Institute
 *
 * 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 uk.ac.ebi.eva.utils;

import com.mongodb.MongoClient;
import com.mongodb.MongoCredential;
import com.mongodb.ServerAddress;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.SimpleMongoDbFactory;

import java.net.UnknownHostException;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;

/**
 *
 * @author Jose Miguel Mut Lopez <jmmut@ebi.ac.uk>
 *
 * Utility class dealing with MongoDB connections
 */
public class ConnectionHelper {

    private static MongoClient mongoClientWithAuthentication;
    private static MongoClient mongoClientWithOutAuthentication;

    public static List<ServerAddress> parseServerAddresses(String hosts) throws UnknownHostException {
        List<ServerAddress> serverAddresses = new LinkedList<>();
        for (String hostPort : hosts.split(",")) {
            if (hostPort.contains(":")) {
                String[] split = hostPort.split(":");
                Integer port = Integer.valueOf(split[1]);
                serverAddresses.add(new ServerAddress(split[0], port));
            } else {
                serverAddresses.add(new ServerAddress(hostPort, 27017));
            }
        }
        return serverAddresses;
    }

    public static MongoTemplate getMongoTemplate(String database, String hosts, String authenticationDB,
            String user, char[] password) throws UnknownHostException {
        return new MongoTemplate(
                new SimpleMongoDbFactory(getMongoClient(hosts, authenticationDB, user, password), database));
    }

    public static MongoTemplate getMongoTemplate(String database) throws UnknownHostException {
        return new MongoTemplate(new SimpleMongoDbFactory(getMongoClient(), database));
    }

    public static MongoClient getMongoClient(String hosts, String authenticationDB, String user, char[] password)
            throws UnknownHostException {
        if (mongoClientWithAuthentication == null) {
            mongoClientWithAuthentication = new MongoClient(parseServerAddresses(hosts),
                    Collections.singletonList(MongoCredential.createCredential(user, authenticationDB, password)));
        }

        return mongoClientWithAuthentication;
    }

    public static MongoClient getMongoClient() throws UnknownHostException {
        if (mongoClientWithOutAuthentication == null)
            mongoClientWithOutAuthentication = new MongoClient();

        return mongoClientWithOutAuthentication;
    }
}