DefaultCredentialsServiceLocator.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.node.service.credentials;

import org.apache.commons.lang3.StringUtils;
import org.kaaproject.kaa.server.operations.service.cache.CacheService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import javax.annotation.Resource;

/**
 * The default implementation of the {@link CredentialsServiceLocator}
 * interface.
 *
 * @author Andrew Shvayka
 * @author Bohdan Khablenko
 * @since v0.9.0
 */
@Service("rootCredentialsServiceLocator")
public final class DefaultCredentialsServiceLocator
    implements CredentialsServiceLocator, CredentialsServiceRegistry {

  public static final String DEFAULT_CREDENTIALS_SERVICE_NAME = "Trustful";
  private static final Logger LOG = LoggerFactory.getLogger(DefaultCredentialsServiceLocator.class);
  @Autowired
  private CacheService cacheService;

  @Resource
  private Map<String, CredentialsServiceLocator> credentialsServiceLocatorMap;

  @Override
  public CredentialsService getCredentialsService(String applicationId) {
    String serviceName = this.cacheService.findAppById(applicationId).getCredentialsServiceName();
    if (StringUtils.isBlank(serviceName)) {
      serviceName = DEFAULT_CREDENTIALS_SERVICE_NAME;
      LOG.debug("No credentials service configured for application [{}], using [{}]",
          applicationId, serviceName);
    }
    CredentialsServiceLocator locator = credentialsServiceLocatorMap.get(serviceName);
    if (locator == null) {
      throw new IllegalStateException("Can't find credentials service factory for name: "
          + serviceName);
    } else {
      return locator.getCredentialsService(applicationId);
    }
  }

  @Override
  public List<String> getCredentialsServiceNames() {
    return this.credentialsServiceLocatorMap.keySet().stream()
        .sorted()
        .collect(Collectors.toList());
  }
}