LogEventMongoDao.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.appenders.mongo.appender;

import com.mongodb.MongoClient;
import com.mongodb.MongoClientOptions;
import com.mongodb.MongoCredential;
import com.mongodb.ServerAddress;

import org.kaaproject.kaa.common.dto.logs.LogEventDto;
import org.kaaproject.kaa.server.appenders.mongo.config.gen.MongoDBCredential;
import org.kaaproject.kaa.server.appenders.mongo.config.gen.MongoDbConfig;
import org.kaaproject.kaa.server.appenders.mongo.config.gen.MongoDbServer;
import org.kaaproject.kaa.server.common.log.shared.appender.data.ProfileInfo;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.data.mongodb.MongoDbFactory;
import org.springframework.data.mongodb.UncategorizedMongoDbException;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.SimpleMongoDbFactory;
import org.springframework.data.mongodb.core.WriteResultChecking;
import org.springframework.data.mongodb.core.convert.DefaultMongoTypeMapper;
import org.springframework.data.mongodb.core.convert.MappingMongoConverter;
import org.springframework.data.mongodb.core.mapping.MongoMappingContext;

import java.util.ArrayList;
import java.util.List;

public class LogEventMongoDao implements LogEventDao {

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

  private MongoClient mongoClient;
  private MongoTemplate mongoTemplate;

  /**
   * Create new instance of <code>LogEventMongoDao</code> using configuration instance of
   * <code>MongoDbConfig</code>.
   *
   * @param configuration the configuration of log event mongo dao, it contain server size,
   *                      credentials, max wait time, etc.
   */
  @SuppressWarnings("deprecation")
  public LogEventMongoDao(MongoDbConfig configuration) throws Exception {

    List<ServerAddress> seeds = new ArrayList<>(configuration.getMongoServers().size());
    for (MongoDbServer server : configuration.getMongoServers()) {
      seeds.add(new ServerAddress(server.getHost(), server.getPort()));
    }

    List<MongoCredential> credentials = new ArrayList<>();
    if (configuration.getMongoCredentials() != null) {
      for (MongoDBCredential credential : configuration.getMongoCredentials()) {
        credentials.add(MongoCredential.createMongoCRCredential(credential.getUser(),
            configuration.getDbName(),
            credential.getPassword().toCharArray()));
      }
    }

    MongoClientOptions.Builder optionsBuilder = new MongoClientOptions.Builder();
    if (configuration.getConnectionsPerHost() != null) {
      optionsBuilder.connectionsPerHost(configuration.getConnectionsPerHost());
    }
    if (configuration.getMaxWaitTime() != null) {
      optionsBuilder.maxWaitTime(configuration.getMaxWaitTime());
    }
    if (configuration.getConnectionTimeout() != null) {
      optionsBuilder.connectTimeout(configuration.getConnectionTimeout());
    }
    if (configuration.getSocketTimeout() != null) {
      optionsBuilder.socketTimeout(configuration.getSocketTimeout());
    }
    if (configuration.getSocketKeepalive() != null) {
      optionsBuilder.socketKeepAlive(configuration.getSocketKeepalive());
    }

    MongoClientOptions options = optionsBuilder.build();
    mongoClient = new MongoClient(seeds, credentials, options);

    MongoDbFactory dbFactory = new SimpleMongoDbFactory(mongoClient, configuration.getDbName());

    MappingMongoConverter converter = new MappingMongoConverter(dbFactory,
        new MongoMappingContext());
    converter.setTypeMapper(new DefaultMongoTypeMapper(null));

    mongoTemplate = new MongoTemplate(dbFactory, converter);
    mongoTemplate.setWriteResultChecking(WriteResultChecking.EXCEPTION);
  }

  @Override
  public void createCollection(String collectionName) {
    try {
      if (!mongoTemplate.collectionExists(collectionName)) {
        mongoTemplate.createCollection(collectionName);
      }
    } catch (UncategorizedMongoDbException ex) {
      LOG.warn("Failed to create collection {} due to", collectionName, ex);
    }
  }

  @Override
  public List<LogEvent> save(List<LogEventDto> logEventDtos, ProfileInfo clientProfile,
                             ProfileInfo serverProfile, String collectionName) {
    List<LogEvent> logEvents = new ArrayList<>(logEventDtos.size());
    for (LogEventDto logEventDto : logEventDtos) {
      logEvents.add(new LogEvent(logEventDto, clientProfile, serverProfile));
    }
    LOG.debug("Saving {} log events", logEvents.size());
    mongoTemplate.insert(logEvents, collectionName);
    return logEvents;
  }

  @Override
  public void removeAll(String collectionName) {
    LOG.debug("Remove all documents from [{}] collection.", collectionName);
    mongoTemplate.dropCollection(collectionName);
  }

  @Override
  public void close() {
    if (mongoClient != null) {
      mongoClient.close();
    }
  }

}