package org.apache.archiva.redback.rest.services.utils;
   /*
    * 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.archiva.redback.system.check.EnvironmentCheck;
  import org.apache.commons.lang.time.StopWatch;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.context.ApplicationContext;
  import org.springframework.stereotype.Service;
  
  import javax.inject.Inject;
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.List;
  
  /**
   * @author Olivier Lamy
   * @since 1.4
   */
  @Service("environmentChecker#rest")
  public class EnvironmentChecker
  {
  
      private Logger log = LoggerFactory.getLogger( getClass() );
  
  
      @Inject
      public EnvironmentChecker( ApplicationContext applicationContext )
      {
          Collection<EnvironmentCheck> checkers = applicationContext.getBeansOfType( EnvironmentCheck.class ).values();
  
          StopWatch stopWatch = new StopWatch();
          stopWatch.reset();
          stopWatch.start();
  
          if ( checkers != null )
          {
              List<String> violations = new ArrayList<String>();
  
              for ( EnvironmentCheck check : checkers )
              {
                  check.validateEnvironment( violations );
              }
  
              if ( !violations.isEmpty() )
              {
                  StringBuilder msg = new StringBuilder();
                  msg.append( "EnvironmentCheck Failure.\n" );
                  msg.append( "======================================================================\n" );
                  msg.append( " ENVIRONMENT FAILURE !! \n" );
                  msg.append( "\n" );
  
                  for ( String v : violations )
                  {
                      msg.append( v ).append( "\n" );
                  }
  
                  msg.append( "\n" );
                  msg.append( "======================================================================" );
                  log.error( msg.toString() );
              }
          }
  
          stopWatch.stop();
          log.info( "time to execute all EnvironmentCheck: {} ms", stopWatch.getTime() );
      }
  }