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.topology;
  
  import static org.apache.ambari.server.controller.AmbariManagementControllerImpl.CLUSTER_PHASE_INITIAL_INSTALL;
  import static org.apache.ambari.server.controller.AmbariManagementControllerImpl.CLUSTER_PHASE_INITIAL_START;
  import static org.apache.ambari.server.controller.AmbariManagementControllerImpl.CLUSTER_PHASE_PROPERTY;
  import static org.apache.ambari.server.controller.internal.HostComponentResourceProvider.DO_NOT_SKIP_INSTALL_FOR_COMPONENTS;
  import static org.apache.ambari.server.controller.internal.HostComponentResourceProvider.FOR_ALL_COMPONENTS;
  import static org.apache.ambari.server.controller.internal.HostComponentResourceProvider.FOR_NO_COMPONENTS;
  import static org.apache.ambari.server.controller.internal.HostComponentResourceProvider.SKIP_INSTALL_FOR_COMPONENTS;
  
  import java.util.Map;
  
  import org.apache.ambari.server.state.State;
  
  import com.google.common.collect.ImmutableMap;
  
  /**
   * Steps of service provisioning.
   */
  public enum ProvisionStep {
  
    INSTALL {
      @Override
      public State getDesiredStateToSet() {
        return State.INSTALLED;
      }
  
      @Override
      public Map<String, String> getProvisionProperties() {
        return ImmutableMap.of(CLUSTER_PHASE_PROPERTY, CLUSTER_PHASE_INITIAL_INSTALL);
      }
    },
  
    /**
     * This special step is used for START_ONLY services/components, because state
     * transition cannot skip INSTALLED in the INIT -> INSTALLED -> STARTED sequence.
     */
    SKIP_INSTALL {
      @Override
      public State getDesiredStateToSet() {
        return State.INSTALLED;
      }
  
      @Override
      public Map<String, String> getProvisionProperties() {
        return ImmutableMap.of(
          SKIP_INSTALL_FOR_COMPONENTS,        FOR_ALL_COMPONENTS,
          DO_NOT_SKIP_INSTALL_FOR_COMPONENTS, FOR_NO_COMPONENTS,
          CLUSTER_PHASE_PROPERTY,             CLUSTER_PHASE_INITIAL_INSTALL
        );
      }
    },
  
    START {
      @Override
      public State getDesiredStateToSet() {
        return State.STARTED;
      }
  
      @Override
      public Map<String, String> getProvisionProperties() {
        return ImmutableMap.of(CLUSTER_PHASE_PROPERTY, CLUSTER_PHASE_INITIAL_START);
      }
    },
    ;
  
    public abstract State getDesiredStateToSet();
    public abstract Map<String, String> getProvisionProperties();
  
  }
  