JDBCTargetFactory


1   /*
2    * Copyright (C) The Apache Software Foundation. All rights reserved.
3    *
4    * This software is published under the terms of the Apache Software License
5    * version 1.1, a copy of which has been included  with this distribution in
6    * the LICENSE.txt file.
7    */
8   package org.apache.avalon.excalibur.logger.factory;
9   
10  
11  
12  
13  import javax.naming.Context  ;
14  import javax.naming.InitialContext  ;
15  import javax.naming.NamingException  ;
16  import javax.sql.DataSource  ;
17  import org.apache.avalon.excalibur.logger.LogTargetFactory;
18  import org.apache.avalon.framework.configuration.Configurable;
19  import org.apache.avalon.framework.configuration.Configuration;
20  import org.apache.avalon.framework.configuration.ConfigurationException;
21  import org.apache.log.LogTarget;
22  import org.apache.log.output.db.ColumnInfo;
23  import org.apache.log.output.db.ColumnType;
24  import org.apache.log.output.db.DefaultJDBCTarget;
25  import org.apache.log.output.db.NormalizedJDBCTarget;
26  
27  /**
28   * Factory for JDBCLogTarget-s. The configuration looks like this:
29   *
30   * <pre>
31   *  &lt;jdbc id="database"&gt;
32   *      &lt;datasource&gt;java:/LogTargetDataSource&lt;/datasource&gt;
33   *      &lt;normalized&gt;true&lt;/normalized&gt;
34   *      &lt;table name="LOG"&gt;
35   *         &lt;sequence&gt;ID&lt;/sequence&gt;
36   *          &lt;category&gt;CATEGORY&lt;/category&gt;
37   *          &lt;priority&gt;PRIORITY&lt;/priority&gt;
38   *          &lt;message&gt;MESSAGE&lt;/message&gt;
39   *          &lt;time&gt;TIME&lt;/time&gt;
40   *          &lt;rtime&gt;RTIME&lt;/rtime&gt;
41   *          &lt;throwable&gt;THROWABLE&lt;/throwable&gt;
42   *          &lt;hostname&gt;HOSTNAME&lt;/hostname&gt;
43   *          &lt;static aux="-"&gt;STATIC&lt;/static&gt;
44   *          &lt;context aux="principal"&gt;PRINCIPAL&lt;/context&gt;
45   *          &lt;context aux="ipaddress"&gt;IPADDRESS&lt;/context&gt;
46   *          &lt;context aux="username"&gt;USERNAME&lt;/context&gt;
47   *      &lt;/table&gt;
48   *  &lt;/jdbc&gt;
49   * </pre>
50   *
51   * @author <a HREF="mailto:mirceatoma@home.com">Mircea Toma</a>;
52   * @version CVS $Revision: 1.5 $ $Date: 2001/12/11 09:53:30 $
53   */
54  public class JDBCTargetFactory implements LogTargetFactory
55  {
56      public LogTarget createTarget(Configuration configuration)
57          throws ConfigurationException
58      {
59          final String   dataSourceName =
60              configuration.getChild( "datasource", true ).getValue();
61  
62          final boolean normalized =
63              configuration.getChild( "normalized", true ).getValueAsBoolean( false );
64  
65          final Configuration tableConfiguration =
66              configuration.getChild( "table" );
67  
68          final String   table = tableConfiguration.getAttribute( "name" );
69  
70          final Configuration[] conf = tableConfiguration.getChildren();
71          final ColumnInfo[] columns = new ColumnInfo[ conf.length ];
72  
73          for (int i = 0; i < conf.length; i++)
74          {
75              final String   name = conf[i].getValue();
76              final int type = ColumnType.getTypeIdFor( conf[i].getName() );
77              final String   aux = conf[i].getAttribute( "aux", null );
78  
79              columns[i] = new ColumnInfo( name, type, aux );
80          }
81  
82          final DataSource   dataSource;
83  
84          try
85          {
86              Context   ctx = new InitialContext  ();
87              dataSource = (DataSource  )ctx.lookup( dataSourceName );
88          }
89          catch( final NamingException   ne )
90          {
91              throw new ConfigurationException( "Cannot lookup data source", ne );
92          }
93  
94          final LogTarget logTarget;
95          if( normalized )
96          {
97              logTarget = new NormalizedJDBCTarget(dataSource, table, columns);
98          }
99          else
100         {
101             logTarget = new DefaultJDBCTarget( dataSource, table, columns );
102         }
103 
104         return logTarget;
105     }
106 }
107
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