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    1   /**
    2    * Copyright (c) 2002-2011 "Neo Technology,"
    3    * Network Engine for Objects in Lund AB [http://neotechnology.com]
    4    *
    5    * This file is part of Neo4j.
    6    *
    7    * Neo4j is free software: you can redistribute it and/or modify
    8    * it under the terms of the GNU General Public License as published by
    9    * the Free Software Foundation, either version 3 of the License, or
    10   * (at your option) any later version.
    11   *
    12   * This program is distributed in the hope that it will be useful,
    13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    15   * GNU General Public License for more details.
    16   *
    17   * You should have received a copy of the GNU General Public License
    18   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    19   */
    20  package org.neo4j.server.startup.healthcheck;
    21
    22  import java.io.FileInputStream;
    23  import java.io.IOException;
    24  import java.util.Properties;
    25
    26  import org.neo4j.server.configuration.Configurator;
    27
    28  public class Neo4jPropertiesMustExistRule implements StartupHealthCheckRule
    29  {
    30      private static final String EMPTY_STRING = "";
    31      private boolean passed = false;
    32      private boolean ran = false;
    33      protected String failureMessage = EMPTY_STRING;
    34
    35      public boolean execute(Properties properties) {
    36          ran = true;
    37
    38          String configFilename = properties.getProperty( Configurator.NEO_SERVER_CONFIG_FILE_KEY);
    39
    40          Properties configProperties = new Properties();
    41          FileInputStream inputStream = null;
    42          try
    43          {
    44              inputStream = new FileInputStream( configFilename );
    45              configProperties.load( inputStream );
    46          }
    47          catch ( IOException e )
    48          {
    49              failureMessage = String.format("Failed to load configuration properties from [%s]", configFilename);
    50              return false;
    51          }
    52          finally
    53          {
    54              if ( inputStream != null )
    55              {
    56                  try
    57                  {
    58                      inputStream.close();
    59                  }
    60                  catch ( IOException e )
    61                  {   // Couldn't close it
    62                  }
    63              }
    64          }
    65
    66          passed = validateProperties( configProperties );
    67          return passed;
    68      }
    69
    70      protected boolean validateProperties( Properties configProperties )
    71      {
    72          // default implementation: all OK
    73          return true;
    74      }
    75
    76      public String getFailureMessage() {
    77          if(passed) {
    78              return EMPTY_STRING;
    79          }
    80
    81          if(!ran) {
    82              return String.format("%s has not been run", getClass().getName());
    83          } else {
    84              return failureMessage;
    85          }
    86      }
    87  }