CassandraEpByAccessTokenDao.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.cassandra.dao.filter;

import org.kaaproject.kaa.server.common.nosql.cassandra.dao.AbstractCassandraDao;
import org.kaaproject.kaa.server.common.nosql.cassandra.dao.model.CassandraEpByAccessToken;
import org.kaaproject.kaa.server.common.nosql.cassandra.dao.model.CassandraModelConstants;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Repository;

import java.nio.ByteBuffer;

@Repository
public class CassandraEpByAccessTokenDao
    extends AbstractCassandraDao<CassandraEpByAccessToken, String> {

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

  @Override
  protected Class<CassandraEpByAccessToken> getColumnFamilyClass() {
    return CassandraEpByAccessToken.class;
  }

  @Override
  protected String getColumnFamilyName() {
    return CassandraModelConstants.EP_BY_ACCESS_TOKEN_COLUMN_FAMILY_NAME;
  }

  /**
   * Get endpoints ids by access token.
   *
   * @param accessToken is endpoint key hash
   * @return endpoint key hash
   */
  public ByteBuffer findEpIdByAccessToken(String accessToken) {
    LOG.debug("Try to find endpoint key hash by access token {}", accessToken);
    ByteBuffer endpointKeyHash = null;
    CassandraEpByAccessToken result = findById(accessToken);
    if (result != null) {
      endpointKeyHash = result.getEndpointKeyHash();
    }
    return endpointKeyHash;
  }
}