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;
  
  import java.util.List;
  
  import org.apache.ambari.server.orm.dao.HostVersionDAO;
  import org.apache.ambari.server.orm.dao.ServiceComponentDesiredStateDAO;
  import org.apache.ambari.server.orm.entities.HostVersionEntity;
  import org.apache.ambari.server.orm.entities.ServiceComponentDesiredStateEntity;
  import org.apache.ambari.server.state.RepositoryVersionState;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import com.google.inject.Inject;
  
  /**
   * Is executed on server start.
   * Checks server state and recovers it to valid if required.
   */
  public class StateRecoveryManager {
  
    private static final Logger LOG = LoggerFactory.getLogger(StateRecoveryManager.class);
  
    @Inject
    private HostVersionDAO hostVersionDAO;
  
    @Inject
    private ServiceComponentDesiredStateDAO serviceComponentDAO;
  
    public void doWork() {
      checkHostAndClusterVersions();
    }
  
    void checkHostAndClusterVersions() {
      List<HostVersionEntity> hostVersions = hostVersionDAO.findAll();
      for (HostVersionEntity hostVersion : hostVersions) {
        if (hostVersion.getState().equals(RepositoryVersionState.INSTALLING)) {
          hostVersion.setState(RepositoryVersionState.INSTALL_FAILED);
          String msg = String.format(
                  "Recovered state of host version %s on host %s from %s to %s",
                  hostVersion.getRepositoryVersion().getDisplayName(),
                  hostVersion.getHostName(),
                  RepositoryVersionState.INSTALLING,
                  RepositoryVersionState.INSTALL_FAILED);
          LOG.warn(msg);
          hostVersionDAO.merge(hostVersion);
        }
      }
  
      List<ServiceComponentDesiredStateEntity> components = serviceComponentDAO.findAll();
      for (ServiceComponentDesiredStateEntity component : components) {
        if (RepositoryVersionState.INSTALLING == component.getRepositoryState()) {
          component.setRepositoryState(RepositoryVersionState.INSTALL_FAILED);
          serviceComponentDAO.merge(component);
          String msg = String.format(
              "Recovered state of cluster %s of component %s/%s for version %s from %s to %s",
              component.getClusterId(),
              component.getServiceName(),
              component.getComponentName(),
              component.getDesiredRepositoryVersion().getDisplayName(),
              RepositoryVersionState.INSTALLING,
              RepositoryVersionState.INSTALL_FAILED);
          LOG.warn(msg);
        }
      }
    }
  
  
  }
  