package org.apache.continuum.purge;
   
   /*
    * 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.
   */
  
  import org.apache.continuum.buildmanager.BuildsManager;
  import org.apache.continuum.dao.ProjectDao;
  import org.apache.continuum.model.repository.DirectoryPurgeConfiguration;
  import org.apache.continuum.model.repository.LocalRepository;
  import org.apache.continuum.model.repository.RepositoryPurgeConfiguration;
  import org.apache.continuum.purge.task.PurgeTask;
  import org.apache.continuum.taskqueue.manager.TaskQueueManager;
  import org.apache.continuum.taskqueue.manager.TaskQueueManagerException;
  import org.apache.maven.continuum.build.settings.DefaultSchedulesActivator;
  import org.apache.maven.continuum.build.settings.SchedulesActivationException;
  import org.apache.maven.continuum.build.settings.SchedulesActivator;
  import org.apache.maven.continuum.model.project.Schedule;
  import org.codehaus.plexus.taskqueue.TaskQueueException;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.util.List;
  
  /**
   * DefaultContinuumPurgeManager
   *
   * @author Maria Catherine Tan
   * @version $Id: DefaultContinuumPurgeManager.java 780708 2009-06-01 16:29:31Z jmorales $
   * @plexus.component role="org.apache.continuum.purge.ContinuumPurgeManager" role-hint="default"
   * @since 25 jul 07
   */
  public class DefaultContinuumPurgeManager
      implements ContinuumPurgeManager
  {
      private static final Logger log = LoggerFactory.getLogger( DefaultContinuumPurgeManager.class );
      
      /**
       * @plexus.requirement
       */
      private SchedulesActivator schedulesActivator;
  
      /**
       * @plexus.requirement
       */
      private PurgeConfigurationService purgeConfigurationService;
  
      /**
       * @plexus.requirement
       */
      private TaskQueueManager taskQueueManager;
      
      /**
       * @plexus.requirement role-hint="parallel"
       */
      private BuildsManager parallelBuildsManager;
      
      public void purge( Schedule schedule )
          throws ContinuumPurgeManagerException
      {
          List<RepositoryPurgeConfiguration> repoPurgeList = null;
          List<DirectoryPurgeConfiguration> dirPurgeList = null;
  
          repoPurgeList = purgeConfigurationService.getEnableRepositoryPurgeConfigurationsBySchedule( schedule.getId() );
          dirPurgeList = purgeConfigurationService.getEnableDirectoryPurgeConfigurationsBySchedule( schedule.getId() );
  
          if ( repoPurgeList != null && repoPurgeList.size() > 0 )
          {
              for ( RepositoryPurgeConfiguration repoPurge : repoPurgeList )
              {
                  purgeRepository( repoPurge );
              }
          }
  
          if ( dirPurgeList != null && dirPurgeList.size() > 0 )
          {
              for ( DirectoryPurgeConfiguration dirPurge : dirPurgeList )
              {
                  purgeDirectory( dirPurge );
              }
          }
          
          if ( ( repoPurgeList == null || repoPurgeList.isEmpty() ) && ( dirPurgeList == null || dirPurgeList.isEmpty() ) )
          {
             // This purge is not enable for a purge process.
             try
             {
                 schedulesActivator.unactivateOrphanPurgeSchedule( schedule );
             }
             catch ( SchedulesActivationException e )
             {
                 log.debug( String.format( "Can't unactivate orphan schedule '%s' for purgeConfiguration",
                                           schedule.getName() ) );
             }
         }
     }
 
     public void purgeRepository( RepositoryPurgeConfiguration repoPurge )
         throws ContinuumPurgeManagerException
     {
         try
         {
             LocalRepository repository = repoPurge.getRepository();
 
             // do not purge if repository is in use and if repository is already in purge queue
             if ( !taskQueueManager.isRepositoryInUse( repository.getId() ) && 
                  !taskQueueManager.isInPurgeQueue( repoPurge.getId() ) )
             {
                 taskQueueManager.getPurgeQueue().put( new PurgeTask( repoPurge.getId() ) );
             }
         }
         catch ( TaskQueueException e )
         {
             throw new ContinuumPurgeManagerException( "Error while enqueuing repository", e );
         }
         catch ( TaskQueueManagerException e )
         {
             throw new ContinuumPurgeManagerException( e.getMessage(), e );
         }
     }
 
     public void purgeDirectory( DirectoryPurgeConfiguration dirPurge )
         throws ContinuumPurgeManagerException
     {
         try
         {
             if ( "releases".equals( dirPurge.getDirectoryType() ) )
             {
                 // do not purge if release in progress
                 if ( !taskQueueManager.releaseInProgress() && 
                      !taskQueueManager.isInPurgeQueue( dirPurge.getId() ) )
                 {
                     taskQueueManager.getPurgeQueue().put( new PurgeTask( dirPurge.getId() ) );
                 }
             }
             else if ( "buildOutput".equals( dirPurge.getDirectoryType() ) )
             {
                 // do not purge if build in progress
                 if ( !parallelBuildsManager.isBuildInProgress() && 
                      !taskQueueManager.isInPurgeQueue( dirPurge.getId() ) )
                 {
                     taskQueueManager.getPurgeQueue().put( new PurgeTask( dirPurge.getId() ) );
                 }
             }
 
         }
         catch ( TaskQueueException e )
         {
             throw new ContinuumPurgeManagerException( "Error while enqueuing repository", e );
         }
         catch ( TaskQueueManagerException e )
         {
             throw new ContinuumPurgeManagerException( e.getMessage(), e );
         }
     }
 
 }