MongoDBTestRunner.java

/*
 * Copyright 2014-2016 CyberVision, Inc.
 *
 * 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.kaaproject.kaa.server.common.nosql.mongo.dao;


import com.mongodb.DB;
import com.mongodb.MongoClient;

import de.flapdoodle.embed.mongo.MongodExecutable;
import de.flapdoodle.embed.mongo.MongodProcess;
import de.flapdoodle.embed.mongo.MongodStarter;
import de.flapdoodle.embed.mongo.config.IMongodConfig;
import de.flapdoodle.embed.mongo.config.MongodConfigBuilder;
import de.flapdoodle.embed.mongo.config.Net;
import de.flapdoodle.embed.mongo.distribution.Version;
import de.flapdoodle.embed.process.runtime.Network;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public abstract class MongoDBTestRunner {

  private static final Logger LOG = LoggerFactory.getLogger(MongoDBTestRunner.class);

  private static final String MONGO_HOST = "localhost";
  private static final int DEFAULT_PORT = 27717;
  private static final String DB_NAME = "kaa";

  private static MongodExecutable mongoDBExec;
  private static MongodProcess mongod;
  private static MongoClient mongo;

  public static void setUp() throws Exception {
    setUp(DEFAULT_PORT);
  }

  public static void setUp(int port) throws Exception {
    LOG.info("Embedded MongoDB server started on " + port + " port and " + MONGO_HOST + " host.");
    MongodStarter runtime = MongodStarter.getDefaultInstance();
    mongoDBExec = runtime.prepare(createMongodConfig(port));
    mongod = mongoDBExec.start();
    mongo = new MongoClient(MONGO_HOST, port);
  }

  protected static IMongodConfig createMongodConfig(int port) throws Exception {
    return createMongodConfigBuilder(port).build();
  }

  protected static MongodConfigBuilder createMongodConfigBuilder(int port) throws Exception {
    return new MongodConfigBuilder()
        .version(Version.Main.V2_4)
        .net(new Net(port, Network.localhostIsIPv6()));
  }

  public static void tearDown() throws Exception {
    mongod.stop();
    mongoDBExec.stop();
  }

  public static MongoClient getMongo() {
    return mongo;
  }

  public static DB getDB() {
    DB db = null;
    if (mongo != null) {
      db = mongo.getDB(DB_NAME);
    }
    return db;
  }
}