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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.util.Properties;
23  
24  import org.neo4j.server.logging.Logger;
25  
26  
27  public class StartupHealthCheck {
28      public static final Logger log = Logger.getLogger(StartupHealthCheck.class);
29      
30      private final StartupHealthCheckRule[] rules;
31  
32      private StartupHealthCheckRule failedRule = null;
33  
34      public StartupHealthCheck(StartupHealthCheckRule ... rules) {
35          this.rules = rules;
36      }
37      
38      public boolean run() {
39          if(rules == null || rules.length < 1) {
40              return true;
41          }
42          
43          Properties properties = System.getProperties();
44          for(StartupHealthCheckRule r : rules) {
45              if(!r.execute(properties)) {
46                  log.error(r.getFailureMessage());
47                  failedRule = r;
48                  return false;
49              }
50          }
51          
52          return true;
53      }
54  
55      public StartupHealthCheckRule failedRule() {
56          return failedRule;
57      }
58  }