content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.apache.ambari.server.state;
  
  import org.apache.ambari.server.orm.entities.ClusterServiceEntity;
  import org.apache.ambari.server.orm.entities.RepositoryVersionEntity;
  
  public interface ServiceFactory {
  
    /**
     * Creates a new service in memory and then persists it to the database.
     *
     * @param cluster
     *          the cluster the service is for (not {@code null).
     * @param serviceName
     *          the name of the service (not {@code null).
     * @param desiredRepositoryVersion
     *          the repository version of the service (not {@code null).
     * @return
     */
    Service createNew(Cluster cluster, String serviceName,
        RepositoryVersionEntity desiredRepositoryVersion);
  
    /**
     * Creates an in-memory representation of a service from an existing database
     * object.
     *
     * @param cluster
     *          the cluster the service is installed in (not {@code null).
     * @param serviceEntity
     *          the entity the existing database entry (not {@code null).
     * @return
     */
    Service createExisting(Cluster cluster, ClusterServiceEntity serviceEntity);
  }
  