com.crosstreelabs.cognitio.service.mongo.provider.MongoClientProvider.java Source code

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Here is the source code for com.crosstreelabs.cognitio.service.mongo.provider.MongoClientProvider.java

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/*
 * Copyright 2015 Crosstree Labs.
 *
 * 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 com.crosstreelabs.cognitio.service.mongo.provider;

import com.crosstreelabs.cognitio.service.mongo.config.MongoConfiguration;
import com.mongodb.MongoClient;
import com.mongodb.ServerAddress;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.List;
import javax.inject.Provider;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class MongoClientProvider implements Provider<MongoClient> {
    private static final Logger LOGGER = LoggerFactory.getLogger(MongoClientProvider.class);
    private final MongoConfiguration config;

    public MongoClientProvider(final MongoConfiguration config) {
        if (config.mongoLocalServer) {
            new MongodProcessProvider(config).get();
        }
        this.config = config;
    }

    @Override
    public MongoClient get() {
        List<ServerAddress> seeds = getSeeds();
        if (seeds.size() == 1) {
            return new MongoClient(seeds.get(0));
        }
        return new MongoClient(seeds);
    }

    protected List<ServerAddress> getSeeds() {
        List<ServerAddress> seeds = new ArrayList<>();
        for (String seed : config.mongoHosts) {
            try {
                seeds.add(new ServerAddress(seed));
            } catch (UnknownHostException ex) {
                LOGGER.warn("{}", ex);
            }
        }
        return seeds;
    }
}